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MALPEDIA_Win_Govrat_Auto

autogenerated rule brought to you by yara-signator

MalwareGovratMalpedia 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: Govrat.

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

Summary generated from the rule's metadata and condition.

Rule source

win-govrat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Govrat_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "b07b1562-1d63-5dd4-91cd-3f2d51f57604"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.govrat"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.govrat_auto.yar#L1-L131"
		license_url = "N/A"
		logic_hash = "21b5c6122229b659ecc3ebe130beeebd787ba55f551a29f3f1eb5cfbb2ba6e10"
		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 = { 8d86f42b0300 50 6a04 58 e8???????? 8907 43 }
		$sequence_1 = { 53 e8???????? 8b45cc 6aff 6a00 8d7e4c }
		$sequence_2 = { 2b30 8933 8910 42 ff4d14 75c1 5f }
		$sequence_3 = { 898624010000 5e 5b c3 55 8bec }
		$sequence_4 = { e8???????? 83c420 50 e8???????? 837e1808 7202 8b1b }
		$sequence_5 = { 3bf8 7216 8b4510 8908 8d57ff 8bc3 e8???????? }
		$sequence_6 = { e8???????? 8b38 85ff 7405 e8???????? ff742410 8d442418 }
		$sequence_7 = { 33c0 8a143b 47 40 8bc8 83e107 3a91ac9b4300 }
		$sequence_8 = { c1fa02 83fa01 7344 8b36 8d5104 51 e8???????? }
		$sequence_9 = { 8b39 0fb64701 8b4924 8955fc 0fb617 330491 }

	condition:
		7 of them and filesize < 761856
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8d86f42b0300 50 6a04 58 e8???????? 8907 43 }
$sequence_1hex{ 53 e8???????? 8b45cc 6aff 6a00 8d7e4c }
$sequence_2hex{ 2b30 8933 8910 42 ff4d14 75c1 5f }
$sequence_3hex{ 898624010000 5e 5b c3 55 8bec }
$sequence_4hex{ e8???????? 83c420 50 e8???????? 837e1808 7202 8b1b }
$sequence_5hex{ 3bf8 7216 8b4510 8908 8d57ff 8bc3 e8???????? }
$sequence_6hex{ e8???????? 8b38 85ff 7405 e8???????? ff742410 8d442418 }
$sequence_7hex{ 33c0 8a143b 47 40 8bc8 83e107 3a91ac9b4300 }
$sequence_8hex{ c1fa02 83fa01 7344 8b36 8d5104 51 e8???????? }
$sequence_9hex{ 8b39 0fb64701 8b4924 8955fc 0fb617 330491 }

Condition

7 of them and filesize < 761856

In plain words (Heuristic)

  • The file must be smaller than 761856 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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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: b07b1562-1d63-5dd4-91cd-3f2d51f57604

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