Skip to content

YARA · Malpedia signator rules

MALPEDIA_Win_Strifewater_Rat_Auto

autogenerated rule brought to you by yara-signator

MalwareStrifewater RatMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
Author
Felix Bilstein - yara-signator at cocacoding dot com
Date
2026-05-04
Modified
2026-05-18
Score / Quality
75 / 75

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Strifewater Rat.

It defines 10 patterns (0 text, 10 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-strifewater-rat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Strifewater_Rat_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "821abdbc-f36b-57c1-b32d-ed62442c83e9"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.strifewater_rat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.strifewater_rat_auto.yar#L1-L132"
		license_url = "N/A"
		logic_hash = "bd524a7aa50f701f9d826d21df3ead7d5391e4b4f29847537d8735b10bbed52d"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20260422"
		malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
		malpedia_version = "20260504"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { 33c0 48894522 448d4005 488d542440 488d4d20 e8???????? 48897c2478 }
		$sequence_1 = { 4883c420 5f c3 488d0d029a0800 e8???????? cc }
		$sequence_2 = { 488907 488bcb ff15???????? 488bc8 e8???????? 488d15d0f50300 48894708 }
		$sequence_3 = { 488d0d953d0300 48890b 488d5308 33c9 48890a 48894a08 488d4808 }
		$sequence_4 = { 8d43ff 4863c8 b25d 381439 7418 488bc3 4885c0 }
		$sequence_5 = { 4d8be1 33c0 498be8 4c8d0dd796faff 4c8bea f04f0fb1bcf170f40a00 }
		$sequence_6 = { 33c9 48890a 48894a08 488d4808 e8???????? 488d05711c0400 488903 }
		$sequence_7 = { 488d1537e4ffff 488d4d00 e8???????? 488bd8 488d8d90010000 e8???????? 488d056c0d0900 }
		$sequence_8 = { 488bf1 48894c2458 4533ff 44897c2444 0fb705???????? 6689442440 8a05???????? }
		$sequence_9 = { 488d1526f00500 488d4c2440 e8???????? cc ff15???????? 0fb7d0 488d4c2460 }

	condition:
		7 of them and filesize < 1552384
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 33c0 48894522 448d4005 488d542440 488d4d20 e8???????? 48897c2478 }
$sequence_1hex{ 4883c420 5f c3 488d0d029a0800 e8???????? cc }
$sequence_2hex{ 488907 488bcb ff15???????? 488bc8 e8???????? 488d15d0f50300 48894708 }
$sequence_3hex{ 488d0d953d0300 48890b 488d5308 33c9 48890a 48894a08 488d4808 }
$sequence_4hex{ 8d43ff 4863c8 b25d 381439 7418 488bc3 4885c0 }
$sequence_5hex{ 4d8be1 33c0 498be8 4c8d0dd796faff 4c8bea f04f0fb1bcf170f40a00 }
$sequence_6hex{ 33c9 48890a 48894a08 488d4808 e8???????? 488d05711c0400 488903 }
$sequence_7hex{ 488d1537e4ffff 488d4d00 e8???????? 488bd8 488d8d90010000 e8???????? 488d056c0d0900 }
$sequence_8hex{ 488bf1 48894c2458 4533ff 44897c2444 0fb705???????? 6689442440 8a05???????? }
$sequence_9hex{ 488d1526f00500 488d4c2440 e8???????? cc ff15???????? 0fb7d0 488d4c2460 }

Condition

7 of them and filesize < 1552384

In plain words (Heuristic)

  • The file must be smaller than 1552384 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

References

Licence & attribution

Author: Felix Bilstein - yara-signator at cocacoding dot com

Source repository: Malpedia signator rules @ c901f97b7d

Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)

Original rule

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

Rule id: 821abdbc-f36b-57c1-b32d-ed62442c83e9

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE