301 lines
16 KiB
Text
301 lines
16 KiB
Text
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/*
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Yara Rule Set
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Author: Florian Roth
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Date: 2015-07-10
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Identifier: WildNeutron
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*/
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/* Rule Set ----------------------------------------------------------------- */
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rule WildNeutron_Sample_1 {
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meta:
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description = "Wild Neutron APT Sample Rule"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
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date = "2015-07-10"
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score = 60
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hash = "2b5065a3d0e0b8252a987ef5f29d9e1935c5863f5718b83440e68dc53c21fa94"
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id = "7bcb407f-7f01-540a-852c-a37456270888"
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strings:
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$s0 = "LiveUpdater.exe" fullword wide /* PEStudio Blacklist: strings */ /* score: '25.00' */
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$s1 = "id-at-postalAddress" fullword ascii /* PEStudio Blacklist: strings */ /* score: '18.00' */
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$s2 = "%d -> %d (default)" fullword wide /* PEStudio Blacklist: strings */ /* score: '17.00' */
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$s3 = "%s%s%s=%d,%s=%d,%s=%d," fullword wide /* score: '15.00' */
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$s8 = "id-ce-keyUsage" fullword ascii /* score: '12.00' */
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$s9 = "Key Usage" fullword ascii /* score: '12.00' */
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$s32 = "UPDATE_ID" fullword wide /* PEStudio Blacklist: strings */ /* score: '9.00' */
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$s37 = "id-at-commonName" fullword ascii /* score: '8.00' */
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$s38 = "2008R2" fullword wide /* PEStudio Blacklist: os */ /* score: '8.00' */
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$s39 = "RSA-alt" fullword ascii /* PEStudio Blacklist: strings */ /* score: '8.00' */
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$s40 = "%02d.%04d.%s" fullword wide /* score: '7.02' */
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condition:
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uint16(0) == 0x5a4d and filesize < 800KB and all of them
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}
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rule WildNeutron_Sample_2 {
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meta:
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description = "Wild Neutron APT Sample Rule"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
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date = "2015-07-10"
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score = 60
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hash = "8d80f9ef55324212759f4b6070cb8fce18a008ae9dd8b9598553206654d13a6f"
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id = "1893c251-f81a-5361-91fa-f91a6d1379d2"
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strings:
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$s0 = "rundll32.exe \"%s\",#1" fullword wide /* PEStudio Blacklist: strings */ /* score: '33.00' */
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$s1 = "IgfxUpt.exe" fullword wide /* score: '20.00' */
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$s2 = "id-at-postalAddress" fullword ascii /* PEStudio Blacklist: strings */ /* score: '18.00' */
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$s3 = "Intel(R) Common User Interface" fullword wide /* PEStudio Blacklist: strings */ /* score: '17.00' */
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$s4 = "%s%s%s=%d,%s=%d,%s=%d," fullword wide /* score: '15.00' */
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$s11 = "Key Usage" fullword ascii /* score: '12.00' */
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$s12 = "Intel Integrated Graphics Updater" fullword wide /* PEStudio Blacklist: strings */ /* score: '12.00' */
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$s13 = "%sexpires on : %04d-%02d-%02d %02d:%02d:%02d" fullword ascii /* PEStudio Blacklist: strings */ /* score: '11.00' */
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condition:
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uint16(0) == 0x5a4d and filesize < 600KB and all of them
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}
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rule WildNeutron_Sample_3 {
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meta:
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description = "Wild Neutron APT Sample Rule"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
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date = "2015-07-10"
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score = 60
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hash = "c2c761cde3175f6e40ed934f2e82c76602c81e2128187bab61793ddb3bc686d0"
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id = "1c5d1442-b2be-5a34-b5c9-78aaf67072c4"
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strings:
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$x1 = "178.162.197.9" fullword ascii /* score: '9.00' */
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$x2 = "\"http://fw.ddosprotected.eu:80 /opts resolv=drfx.chickenkiller.com\"" fullword wide /* PEStudio Blacklist: strings */ /* score: '33.00' */
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$s1 = "LiveUpdater.exe" fullword wide /* PEStudio Blacklist: strings */ /* score: '25.00' */
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$s2 = "id-at-postalAddress" fullword ascii /* PEStudio Blacklist: strings */ /* score: '18.00' */
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$s3 = "%d -> %d (default)" fullword wide /* PEStudio Blacklist: strings */ /* score: '17.00' */
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$s4 = "%s%s%s=%d,%s=%d,%s=%d," fullword wide /* score: '15.00' */
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$s5 = "id-at-serialNumber" fullword ascii /* PEStudio Blacklist: strings */ /* score: '10.00' */
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$s6 = "ECDSA with SHA256" fullword ascii /* PEStudio Blacklist: strings */ /* score: '10.00' */
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$s7 = "Acer LiveUpdater" fullword wide /* PEStudio Blacklist: strings */ /* score: '10.00' */
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condition:
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uint16(0) == 0x5a4d and filesize < 2020KB and
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( 1 of ($x*) or all of ($s*) )
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}
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rule WildNeutron_Sample_4 {
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meta:
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description = "Wild Neutron APT Sample Rule"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
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date = "2015-07-10"
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score = 60
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hash = "b4005530193bc523d3e0193c3c53e2737ae3bf9f76d12c827c0b5cd0dcbaae45"
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id = "52ff5770-1ca4-54d9-b69d-8af0c392084e"
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strings:
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$x1 = "WinRAT-Win32-Release.exe" fullword ascii /* score: '22.00' */
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$s0 = "rundll32.exe \"%s\",#1" fullword wide /* PEStudio Blacklist: strings */ /* score: '33.00' */
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$s1 = "RtlUpd.EXE" fullword wide /* score: '20.00' */
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$s2 = "RtlUpd.exe" fullword wide /* score: '20.00' */
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$s3 = "Driver Update and remove for Windows x64 or x86_32" fullword wide /* PEStudio Blacklist: strings */ /* score: '17.00' */
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$s4 = "Realtek HD Audio Update and remove driver Tool" fullword wide /* PEStudio Blacklist: strings */ /* score: '16.00' */
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$s5 = "%s%s%s=%d,%s=%d,%s=%d," fullword wide /* score: '15.00' */
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$s6 = "Key Usage" fullword ascii /* score: '12.00' */
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$s7 = "id-at-serialNumber" fullword ascii /* PEStudio Blacklist: strings */ /* score: '10.00' */
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condition:
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uint16(0) == 0x5a4d and filesize < 1240KB and all of them
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}
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rule WildNeutron_Sample_5 {
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meta:
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description = "Wild Neutron APT Sample Rule"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
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date = "2015-07-10"
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score = 60
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hash = "1604e36ccef5fa221b101d7f043ad7f856b84bf1a80774aa33d91c2a9a226206"
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id = "0df63255-155d-56b9-b86b-491855983095"
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strings:
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$s0 = "LiveUpdater.exe" fullword wide /* PEStudio Blacklist: strings */ /* score: '25.00' */
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$s1 = "id-at-postalAddress" fullword ascii /* PEStudio Blacklist: strings */ /* score: '18.00' */
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$s2 = "%d -> %d (default)" fullword wide /* PEStudio Blacklist: strings */ /* score: '17.00' */
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$s3 = "%s%s%s=%d,%s=%d,%s=%d," fullword wide /* score: '15.00' */
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$s4 = "sha-1WithRSAEncryption" fullword ascii /* PEStudio Blacklist: strings */ /* score: '15.00' */
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$s5 = "Postal code" fullword ascii /* PEStudio Blacklist: strings */ /* score: '14.00' */
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$s6 = "id-ce-keyUsage" fullword ascii /* score: '12.00' */
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$s7 = "Key Usage" fullword ascii /* score: '12.00' */
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$s8 = "TLS-RSA-WITH-3DES-EDE-CBC-SHA" fullword ascii /* PEStudio Blacklist: strings */ /* score: '11.00' */
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$s9 = "%02d.%04d.%s" fullword wide /* score: '7.02' */
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condition:
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uint16(0) == 0x5a4d and filesize < 1000KB and all of them
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}
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rule WildNeutron_Sample_6 {
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meta:
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description = "Wild Neutron APT Sample Rule"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
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date = "2015-07-10"
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score = 60
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hash = "4bd548fe07b19178281edb1ee81c9711525dab03dc0b6676963019c44cc75865"
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id = "c5d87cad-d1ca-5766-90c1-fc8ecfa3f14f"
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strings:
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$s0 = "mshtaex.exe" fullword wide /* score: '20.00' */
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condition:
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uint16(0) == 0x5a4d and filesize < 310KB and all of them
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}
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rule WildNeutron_Sample_7 {
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meta:
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description = "Wild Neutron APT Sample Rule"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
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date = "2015-07-10"
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score = 60
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hash = "a14d31eb965ea8a37ebcc3b5635099f2ca08365646437c770212d534d504ff3c"
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id = "22561c55-4294-50c9-a9b9-7b4ed98eec09"
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strings:
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$s0 = "checking match for '%s' user %s host %s addr %s" fullword ascii /* PEStudio Blacklist: strings */ /* score: '24.00' */
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$s1 = "PEM_read_bio_PrivateKey failed" fullword ascii /* PEStudio Blacklist: strings */ /* score: '23.00' */
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$s2 = "usage: %s [-ehR] [-f log_facility] [-l log_level] [-u umask]" fullword ascii /* score: '23.00' */
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$s3 = "%s %s for %s%.100s from %.200s port %d%s" fullword ascii /* PEStudio Blacklist: strings */ /* score: '23.00' */
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$s4 = "clapi32.dll" fullword ascii /* score: '21.00' */
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$s5 = "Connection from %s port %d" fullword ascii /* PEStudio Blacklist: strings */ /* score: '17.00' */
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$s6 = "/usr/etc/ssh_known_hosts" fullword ascii /* PEStudio Blacklist: strings */ /* score: '16.00' */
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$s7 = "Version: %s - %s %s %s %s" fullword ascii /* score: '16.00' */
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$s8 = "[-] connect()" fullword ascii /* PEStudio Blacklist: strings */ /* score: '13.00' */
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$s9 = "/bin/sh /usr/etc/sshrc" fullword ascii /* score: '12.42' */
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$s10 = "kexecdhs.c" fullword ascii /* score: '12.00' */
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$s11 = "%s: setrlimit(RLIMIT_FSIZE, { 0, 0 }): %s" fullword ascii /* score: '11.00' */
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condition:
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uint16(0) == 0x5a4d and filesize < 5000KB and all of them
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}
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/* deatcivate because its less relevant
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rule HKTL_NativeCmd_subTee_Jul15 {
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meta:
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description = "NativeCmd - used by various threat groups"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
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date = "2015-07-10"
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modified = "2023-01-06"
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old_rule_name = "subTee_nativecmd"
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score = 40
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hash = "758e6b519f6c0931ff93542b767524fc1eab589feb5cfc3854c77842f9785c92"
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strings:
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$x2 = "RunFile: couldn't find ShellExecuteExA/W in SHELL32.DLL!" fullword ascii
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$x3 = "Error executing CreateProcess()!!" fullword wide
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$x4 = "cmdcmdline" fullword wide
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$x5 = "Invalid input handle!!!" fullword ascii
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$s5 = "Usage: destination [reference]" fullword wide
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$s6 = ".com;.exe;.bat;.cmd" wide
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$s15 = "%-8s %-3s %*s %s %s" fullword wide
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$s16 = " %%%c in (%s) do " fullword wide
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condition:
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uint16(0) == 0x5a4d and ( 2 of ($x*) or 6 of ($s*) )
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}
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*/
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rule WildNeutron_Sample_9 {
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meta:
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description = "Wild Neutron APT Sample Rule"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
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date = "2015-07-10"
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modified = "2023-01-06"
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score = 60
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hash = "781eb1e17349009fbae46aea5c59d8e5b68ae0b42335cb035742f6b0f4e4087e"
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id = "dbfdbe8c-4a4a-5512-a03d-e9f80c853d48"
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strings:
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$s0 = "http://get.adobe.com/flashplayer/" wide /* score: '30.00' */
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$s4 = " Player Installer/Uninstaller" fullword wide /* score: '11.42' */
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$s5 = "Adobe Flash Plugin Updater" fullword wide /* score: '11.00' */
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$s6 = "uSOFTWARE\\Adobe" fullword wide /* score: '10.42' */
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$s11 = "2008R2" fullword wide /* PEStudio Blacklist: os */ /* score: '8.00' */
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$s12 = "%02d.%04d.%s" fullword wide /* score: '7.02' */
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$s13 = "%d -> %d" fullword wide /* score: '7.00' */
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condition:
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uint16(0) == 0x5a4d and filesize < 1477KB and all of them
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}
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rule WildNeutron_Sample_10 {
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meta:
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description = "Wild Neutron APT Sample Rule"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
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date = "2015-07-10"
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score = 60
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hash = "1d3bdabb350ba5a821849893dabe5d6056bf7ba1ed6042d93174ceeaa5d6dad7"
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id = "5654a36f-8502-5e18-b8f3-94d4add466a7"
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strings:
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$n1 = "/c for /L %%i in (1,1,2) DO ping 127.0.0.1 -n 3 & type %%windir%%\\notepad.exe > %s & del /f %s" fullword ascii /* PEStudio Blacklist: strings */ /* score: '46.00' */
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$s1 = "%SYSTEMROOT%\\temp\\_dbg.tmp" fullword ascii /* PEStudio Blacklist: strings */ /* score: '37.00' */
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$s2 = "%SYSTEMROOT%\\SysWOW64\\mspool.dll" fullword ascii /* PEStudio Blacklist: strings */ /* score: '36.17' */
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$s3 = "%SYSTEMROOT%\\System32\\dpcore16t.dll" fullword ascii /* PEStudio Blacklist: strings */ /* score: '36.17' */
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$s4 = "%SYSTEMROOT%\\System32\\wdigestEx.dll" fullword ascii /* PEStudio Blacklist: strings */ /* score: '36.17' */
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$s5 = "%SYSTEMROOT%\\System32\\mspool.dll" fullword ascii /* PEStudio Blacklist: strings */ /* score: '36.17' */
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$s6 = "%SYSTEMROOT%\\System32\\kernel32.dll" fullword ascii /* PEStudio Blacklist: strings */ /* score: '36.00' */
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$s7 = "%SYSTEMROOT%\\SysWOW64\\iastor32.exe" fullword ascii /* PEStudio Blacklist: strings */ /* score: '31.17' */
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$s8 = "%SYSTEMROOT%\\System32\\msvcse.exe" fullword ascii /* PEStudio Blacklist: strings */ /* score: '31.17' */
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$s9 = "%SYSTEMROOT%\\System32\\mshtaex.exe" fullword ascii /* PEStudio Blacklist: strings */ /* score: '31.17' */
|
||
|
|
$s10 = "%SYSTEMROOT%\\System32\\iastor32.exe" fullword ascii /* PEStudio Blacklist: strings */ /* score: '31.17' */
|
||
|
|
$s11 = "%SYSTEMROOT%\\SysWOW64\\mshtaex.exe" fullword ascii /* PEStudio Blacklist: strings */ /* score: '31.17' */
|
||
|
|
|
||
|
|
$x1 = "wdigestEx.dll" fullword ascii /* PEStudio Blacklist: strings */ /* score: '26.00' */
|
||
|
|
$x2 = "dpcore16t.dll" fullword ascii /* score: '21.00' */
|
||
|
|
$x3 = "mspool.dll" fullword ascii /* score: '21.00' */
|
||
|
|
$x4 = "msvcse.exe" fullword ascii /* score: '20.00' */
|
||
|
|
$x5 = "mshtaex.exe" fullword wide /* score: '20.00' */
|
||
|
|
$x6 = "iastor32.exe" fullword ascii /* score: '20.00' */
|
||
|
|
|
||
|
|
$y1 = "Installer.exe" fullword ascii /* PEStudio Blacklist: strings */ /* score: '25.00' */
|
||
|
|
$y2 = "Info: Process %s" fullword ascii /* PEStudio Blacklist: strings */ /* score: '21.00' */
|
||
|
|
$y3 = "Error: GetFileTime %s 0x%x" fullword ascii /* score: '17.00' */
|
||
|
|
$y4 = "Install succeeded" fullword ascii /* PEStudio Blacklist: strings */ /* score: '10.00' */
|
||
|
|
$y5 = "Error: RegSetValueExA 0x%x" fullword ascii /* score: '9.00' */
|
||
|
|
condition:
|
||
|
|
uint16(0) == 0x5a4d and filesize < 400KB and
|
||
|
|
(
|
||
|
|
$n1 or ( 1 of ($s*) and 1 of ($x*) and 3 of ($y*) )
|
||
|
|
)
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Super Rules ------------------------------------------------------------- */
|
||
|
|
|
||
|
|
|
||
|
|
rule APT_MAL_WildNeutron_javacpl {
|
||
|
|
meta:
|
||
|
|
description = "Wild Neutron APT Sample Rule"
|
||
|
|
author = "Florian Roth (Nextron Systems)"
|
||
|
|
reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
|
||
|
|
date = "2015-07-10"
|
||
|
|
modified = "2023-01-06"
|
||
|
|
old_rule_name = "WildNeutron_javacpl"
|
||
|
|
score = 60
|
||
|
|
hash1 = "683f5b476f8ffe87ec22b8bab57f74da4a13ecc3a5c2cbf951999953c2064fc9"
|
||
|
|
hash2 = "758e6b519f6c0931ff93542b767524fc1eab589feb5cfc3854c77842f9785c92"
|
||
|
|
hash3 = "8ca7ed720babb32a6f381769ea00e16082a563704f8b672cb21cf11843f4da7a"
|
||
|
|
id = "de82827e-61d4-559e-886a-78d5293ab141"
|
||
|
|
strings:
|
||
|
|
$s1 = "RunFile: couldn't find ShellExecuteExA/W in SHELL32.DLL!" ascii fullword
|
||
|
|
$s2 = "cmdcmdline" wide fullword
|
||
|
|
$s3 = "\"%s\" /K %s" wide fullword
|
||
|
|
$s4 = "Process is not running any more" wide fullword
|
||
|
|
$s5 = "dpnxfsatz" wide fullword
|
||
|
|
|
||
|
|
$op1 = { ff d6 50 ff 15 ?? ?? 43 00 8b f8 85 ff 74 34 83 64 24 0c 00 e8 ?? ?? 02 00 }
|
||
|
|
$op2 = { b8 02 00 00 00 01 45 80 01 45 88 6a 00 47 52 89 7d 8c 03 d8 }
|
||
|
|
$op3 = { 8b c7 f7 f6 46 89 b5 c8 fd ff ff 0f b7 c0 8b c8 0f af ce 3b cf }
|
||
|
|
condition:
|
||
|
|
uint16(0) == 0x5a4d and filesize < 5MB and (
|
||
|
|
all of ($s*) or
|
||
|
|
all of ($op*)
|
||
|
|
)
|
||
|
|
}
|