Sneed-Reactivity/yara-Neo23x0/apt_netwire_rat.yar

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/*
Yara Rule Set
Author: Florian Roth
Date: 2018-01-05
Identifier: NetWire
Reference: https://pastebin.com/8qaiyPxs
*/
/* Rule Set ----------------------------------------------------------------- */
rule Susp_Indicators_EXE {
meta:
description = "Detects packed NullSoft Inst EXE with characteristics of NetWire RAT"
license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
author = "Florian Roth (Nextron Systems)"
reference = "https://pastebin.com/8qaiyPxs"
date = "2018-01-05"
score = 60
hash1 = "6de7f0276afa633044c375c5c630740af51e29b6a6f17a64fbdd227c641727a4"
id = "b4015c24-d18e-51eb-9854-8cc0e6dba4d0"
strings:
$s1 = "Software\\Microsoft\\Windows\\CurrentVersion"
$s2 = "Error! Bad token or internal error" fullword ascii
$s3 = "CRYPTBASE" fullword ascii
$s4 = "UXTHEME" fullword ascii
$s5 = "PROPSYS" fullword ascii
$s6 = "APPHELP" fullword ascii
condition:
uint16(0) == 0x5A4D and uint32(uint32(0x3c)) == 0x4550 and filesize < 700KB and all of them
}
rule Suspicious_BAT_Strings {
meta:
description = "Detects a string also used in Netwire RAT auxilliary"
license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
author = "Florian Roth (Nextron Systems)"
score = 60
reference = "https://pastebin.com/8qaiyPxs"
date = "2018-01-05"
id = "5fe28555-96c8-54da-b047-7d0a7532a6d2"
strings:
$s1 = "ping 192.0.2.2 -n 1" ascii
condition:
filesize < 600KB and 1 of them
}
rule Malicious_BAT_Strings {
meta:
description = "Detects a string also used in Netwire RAT auxilliary"
license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
author = "Florian Roth (Nextron Systems)"
score = 60
reference = "https://pastebin.com/8qaiyPxs"
date = "2018-01-05"
id = "6e197d05-62eb-535d-8cd6-db8550e51588"
strings:
$s1 = "call :deleteSelf&exit /b"
condition:
filesize < 600KB and 1 of them
}