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DITEKSHEN_MALWARE_Win_Oracrat

Detects OracRAT / Comfoo / Babar

MalwareOracratditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekSHen
Date
2020-11-06
Modified
2024-11-01
Score / Quality
75 / 75

What this rule detects

Detects OracRAT / Comfoo / Babar

Associated malware family: Oracrat.

Targets: Windows PE.

It defines 7 patterns (7 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-oracrat.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Oracrat : FILE
{
	meta:
		description = "Detects OracRAT / Comfoo / Babar"
		author = "ditekSHen"
		id = "53f3778e-56d5-5390-8ce7-82d4ede46be4"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L10543-L10557"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "078a5df9f3d0bb8213ea2fe28eefdb453ef186e6c1f62d3ba10cb04fca047700"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "\\\\.\\DevCtrlKrnl" fullword ascii
		$s2 = "SOFTWARE\\Microsoft\\IE4\\Setup" fullword ascii
		$s3 = "\\PLUGINS" fullword ascii
		$s4 = "\\config\\sam" fullword ascii
		$s5 = "\\iexplore.exe\" about:blank" fullword ascii
		$s6 = "usbak.sys" fullword ascii
		$s7 = "userctfm" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and 5 of them
}

Strings (7 patterns)

IdentifierTypeValueModifiers
$s1text"\\\\.\\DevCtrlKrnl"fullword ascii
$s2text"SOFTWARE\\Microsoft\\IE4\\Setup"fullword ascii
$s3text"\\PLUGINS"fullword ascii
$s4text"\\config\\sam"fullword ascii
$s5text"\\iexplore.exe\" about:blank"fullword ascii
$s6text"usbak.sys"fullword ascii
$s7text"userctfm"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and 5 of them

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 5 patterns in the rule must match.

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References

Licence & attribution

Author: ditekSHen

Source repository: ditekSHen detection @ e76c93dcde

Licence: BSD 2-Clause License (repository licence)

Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 53f3778e-56d5-5390-8ce7-82d4ede46be4

Tags:FILE

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