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DITEKSHEN_MALWARE_Win_Spyeye

Detects SpyEye

MalwareSpyeyeditekSHen 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 SpyEye

Associated malware family: Spyeye.

Targets: Windows PE.

It defines 8 patterns (8 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-spyeye.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Spyeye : FILE
{
	meta:
		description = "Detects SpyEye"
		author = "ditekSHen"
		id = "aa15220a-6fd4-5c5e-8287-957fc3c3fe52"
		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#L4096-L4111"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "352853d600d1f4fbc09e58b783eb4e13b335fefbfe89842873710f0a9085d107"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$x1 = "_CLEANSWEEP_" ascii wide
		$x2 = "config.datUT" fullword ascii
		$x3 = "webinjects.txtUT" fullword ascii
		$s1 = "confirm:processCommand" fullword ascii
		$s2 = "Smth wrong with navigate to REF-PAGE (err code: %d). 0_o" fullword ascii
		$s3 = "(UTC%s%2.2f) %s" fullword wide
		$s4 = "M\\F;u`r" fullword ascii
		$s5 = "]YH0%Yn" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( 2 of ( $x* ) or ( 1 of ( $x* ) and 1 of ( $s* ) ) )
}

Strings (8 patterns)

IdentifierTypeValueModifiers
$x1text"_CLEANSWEEP_"ascii wide
$x2text"config.datUT"fullword ascii
$x3text"webinjects.txtUT"fullword ascii
$s1text"confirm:processCommand"fullword ascii
$s2text"Smth wrong with navigate to REF-PAGE (err code: %d). 0_o"fullword ascii
$s3text"(UTC%s%2.2f) %s"fullword wide
$s4text"M\\F;u`r"fullword ascii
$s5text"]YH0%Yn"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and ( 2 of ( $x* ) or ( 1 of ( $x* ) and 1 of ( $s* ) ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 2 patterns in ( $x* ) must match.
  • At least 1 patterns in ( $x* ) must match.
  • At least 1 patterns in ( $s* ) 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: aa15220a-6fd4-5c5e-8287-957fc3c3fe52

Tags:FILE

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