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MALPEDIA_Win_Solarbot_Auto

autogenerated rule brought to you by yara-signator

MalwareSolarbotMalpedia 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: Solarbot.

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

Summary generated from the rule's metadata and condition.

Rule source

win-solarbot-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Solarbot_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "105fa4f4-8183-52bf-8123-e9354b485107"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.solarbot"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.solarbot_auto.yar#L1-L127"
		license_url = "N/A"
		logic_hash = "fd7305b845e3c66493e1bc450b2017063e86e29be679d0520ec1b532d9af5c7a"
		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 = { 8b95d4f7ffff 8b85d8f7ffff 01c2 52 e8???????? 8985dcf7ffff 85c0 }
		$sequence_1 = { ffd0 8b85f4faffff 83f801 0f859c000000 8b8500fbffff 3d03000080 0f858b000000 }
		$sequence_2 = { 85c0 0f8475000000 6a00 ff75f8 ff7508 ff75fc }
		$sequence_3 = { 50 e8???????? 6800020000 8d8500feffff 50 53 8b95d8fdffff }
		$sequence_4 = { 8b955cfeffff 8910 81fefa000000 72c9 8b8550feffff 0fb710 52 }
		$sequence_5 = { 8b45f8 c7401c00000000 8b55f8 8b45f0 }
		$sequence_6 = { c745e402000000 c745e811000000 eb15 c745e002000000 c745e401000000 c745e806000000 }
		$sequence_7 = { 7521 6a00 6a0c 8d85e8fdffff 50 }
		$sequence_8 = { 83ec28 895dd8 8975dc 897de0 8b5d08 8b750c 8b7d10 }
		$sequence_9 = { 66c745f00200 8b45f4 85c0 0f86a9020000 b800040000 89c6 56 }

	condition:
		7 of them and filesize < 204800
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 8b95d4f7ffff 8b85d8f7ffff 01c2 52 e8???????? 8985dcf7ffff 85c0 }
$sequence_1hex{ ffd0 8b85f4faffff 83f801 0f859c000000 8b8500fbffff 3d03000080 0f858b000000 }
$sequence_2hex{ 85c0 0f8475000000 6a00 ff75f8 ff7508 ff75fc }
$sequence_3hex{ 50 e8???????? 6800020000 8d8500feffff 50 53 8b95d8fdffff }
$sequence_4hex{ 8b955cfeffff 8910 81fefa000000 72c9 8b8550feffff 0fb710 52 }
$sequence_5hex{ 8b45f8 c7401c00000000 8b55f8 8b45f0 }
$sequence_6hex{ c745e402000000 c745e811000000 eb15 c745e002000000 c745e401000000 c745e806000000 }
$sequence_7hex{ 7521 6a00 6a0c 8d85e8fdffff 50 }
$sequence_8hex{ 83ec28 895dd8 8975dc 897de0 8b5d08 8b750c 8b7d10 }
$sequence_9hex{ 66c745f00200 8b45f4 85c0 0f86a9020000 b800040000 89c6 56 }

Condition

7 of them and filesize < 204800

In plain words (Heuristic)

  • The file must be smaller than 204800 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

Test this rule in your browser

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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: 105fa4f4-8183-52bf-8123-e9354b485107

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