54 lines
1.7 KiB
Text
54 lines
1.7 KiB
Text
/*
|
|
Yara Rule Set
|
|
Author: Florian Roth
|
|
Date: 2016-06-14
|
|
Identifier: Fancy Bear and Cozy Bear Report - CrowdStrike
|
|
*/
|
|
|
|
/* Rule Set ----------------------------------------------------------------- */
|
|
|
|
rule COZY_FANCY_BEAR_Hunt {
|
|
meta:
|
|
description = "Detects Cozy Bear / Fancy Bear C2 Server IPs"
|
|
author = "Florian Roth"
|
|
reference = "https://www.crowdstrike.com/blog/bears-midst-intrusion-democratic-national-committee/"
|
|
date = "2016-06-14"
|
|
strings:
|
|
$s1 = "185.100.84.134" ascii wide fullword
|
|
$s2 = "58.49.58.58" ascii wide fullword
|
|
$s3 = "218.1.98.203" ascii wide fullword
|
|
$s4 = "187.33.33.8" ascii wide fullword
|
|
$s5 = "185.86.148.227" ascii wide fullword
|
|
$s6 = "45.32.129.185" ascii wide fullword
|
|
$s7 = "23.227.196.217" ascii wide fullword
|
|
condition:
|
|
uint16(0) == 0x5a4d and 1 of them
|
|
}
|
|
|
|
rule COZY_FANCY_BEAR_pagemgr_Hunt {
|
|
meta:
|
|
description = "Detects a pagemgr.exe as mentioned in the CrowdStrike report"
|
|
author = "Florian Roth"
|
|
reference = "https://www.crowdstrike.com/blog/bears-midst-intrusion-democratic-national-committee/"
|
|
date = "2016-06-14"
|
|
strings:
|
|
$s1 = "pagemgr.exe" wide fullword
|
|
condition:
|
|
uint16(0) == 0x5a4d and 1 of them
|
|
}
|
|
|
|
rule COZY_FANCY_BEAR_modified_VmUpgradeHelper {
|
|
meta:
|
|
description = "Detects a malicious VmUpgradeHelper.exe as mentioned in the CrowdStrike report"
|
|
author = "Florian Roth"
|
|
reference = "https://www.crowdstrike.com/blog/bears-midst-intrusion-democratic-national-committee/"
|
|
date = "2016-06-14"
|
|
strings:
|
|
$s1 = "VMware, Inc." wide fullword
|
|
$s2 = "Virtual hardware upgrade helper service" fullword wide
|
|
$s3 = "vmUpgradeHelper\\vmUpgradeHelper.pdb" ascii
|
|
condition:
|
|
uint16(0) == 0x5a4d and
|
|
filename == "VmUpgradeHelper.exe" and
|
|
not all of ($s*)
|
|
}
|