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MALPEDIA_Win_Abcsync_Auto

autogenerated rule brought to you by yara-signator

MalwareAbcsyncMalpedia 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: Abcsync.

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

Summary generated from the rule's metadata and condition.

Rule source

win-abcsync-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Abcsync_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "002f7fd4-286b-5e2f-9aba-7216d766188a"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.abcsync"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.abcsync_auto.yar#L1-L133"
		license_url = "N/A"
		logic_hash = "cc02bfbde6fc0160d9621def0a33b6b57c4d53ef4dcc5f3473edade080b4d917"
		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 = { 488bd7 488b05???????? 33c9 488945ff 0f114daf c745af68000000 0f294ddf }
		$sequence_1 = { 488b6c2450 488b4c2438 4833cc e8???????? 488b5c2458 488b742468 }
		$sequence_2 = { 4c8be8 4885c0 0f84fa020000 8b8db0010000 488d85b4010000 44897c2448 4533c9 }
		$sequence_3 = { 488b4c2470 833cb100 756f 8b5c2464 33d2 44893cb1 c1e60a }
		$sequence_4 = { 03d0 6bc232 2bc8 8d411b 410fb64c1afe 4898 422a0c18 }
		$sequence_5 = { 4833cc e8???????? 4883c448 c3 4883ec48 488b05???????? 4833c4 }
		$sequence_6 = { 4c8d45a0 4c89742430 8bd7 4c89742428 4c89742420 c7442478ff000000 ff15???????? }
		$sequence_7 = { 662bc1 418d4808 66418942f8 b81f85eb51 f7e9 418bc8 c1fa04 }
		$sequence_8 = { 48c1e605 4803ee 0f1f8000000000 41b818000000 8bd3 c744242810000000 442bc3 }
		$sequence_9 = { 488d0d88e10000 4183e23f 4903e8 498bf0 488b04c1 4b8d14d2 4c8b74d028 }

	condition:
		7 of them and filesize < 348160
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 488bd7 488b05???????? 33c9 488945ff 0f114daf c745af68000000 0f294ddf }
$sequence_1hex{ 488b6c2450 488b4c2438 4833cc e8???????? 488b5c2458 488b742468 }
$sequence_2hex{ 4c8be8 4885c0 0f84fa020000 8b8db0010000 488d85b4010000 44897c2448 4533c9 }
$sequence_3hex{ 488b4c2470 833cb100 756f 8b5c2464 33d2 44893cb1 c1e60a }
$sequence_4hex{ 03d0 6bc232 2bc8 8d411b 410fb64c1afe 4898 422a0c18 }
$sequence_5hex{ 4833cc e8???????? 4883c448 c3 4883ec48 488b05???????? 4833c4 }
$sequence_6hex{ 4c8d45a0 4c89742430 8bd7 4c89742428 4c89742420 c7442478ff000000 ff15???????? }
$sequence_7hex{ 662bc1 418d4808 66418942f8 b81f85eb51 f7e9 418bc8 c1fa04 }
$sequence_8hex{ 48c1e605 4803ee 0f1f8000000000 41b818000000 8bd3 c744242810000000 442bc3 }
$sequence_9hex{ 488d0d88e10000 4183e23f 4903e8 498bf0 488b04c1 4b8d14d2 4c8b74d028 }

Condition

7 of them and filesize < 348160

In plain words (Heuristic)

  • The file must be smaller than 348160 (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: 002f7fd4-286b-5e2f-9aba-7216d766188a

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