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MALPEDIA_Win_Agfspy_Auto

autogenerated rule brought to you by yara-signator

MalwareAgfspyMalpedia 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: Agfspy.

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

Summary generated from the rule's metadata and condition.

Rule source

win-agfspy-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Agfspy_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "3354a5d3-02b5-57cc-8609-7576fd817a74"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.agfspy"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.agfspy_auto.yar#L1-L132"
		license_url = "N/A"
		logic_hash = "38550b3fd6fc17deb203085aed2d62ac879ee866ac3497eca0694cbea2fdea30"
		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 = { 7527 83fefd 7431 8a4101 3a4201 751a 83fefe }
		$sequence_1 = { 8b7d08 33c9 8b4510 8b5d0c 897de4 c745f000000000 c7471000000000 }
		$sequence_2 = { 83c404 8bce ff5204 8935???????? 8d4dd0 e8???????? 8bc6 }
		$sequence_3 = { 33f6 8b9564ffffff 83fa10 722b 8b8d50ffffff 42 8bc1 }
		$sequence_4 = { 833800 7469 8b512c 8b02 85c0 7e60 48 }
		$sequence_5 = { c7464c00000000 5e c3 f7465000000004 74c2 8b4e28 }
		$sequence_6 = { 8a461c 88421c 5e 8917 5f 5d c3 }
		$sequence_7 = { 0fabd0 8801 8bce e9???????? 52 8d4e24 e8???????? }
		$sequence_8 = { c745fc00000000 c745f001000000 8b07 6a00 8b4004 c70407???????? }
		$sequence_9 = { c20800 83ec08 c6432c01 51 8bcb e8???????? 8ac8 }

	condition:
		7 of them and filesize < 1482752
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 7527 83fefd 7431 8a4101 3a4201 751a 83fefe }
$sequence_1hex{ 8b7d08 33c9 8b4510 8b5d0c 897de4 c745f000000000 c7471000000000 }
$sequence_2hex{ 83c404 8bce ff5204 8935???????? 8d4dd0 e8???????? 8bc6 }
$sequence_3hex{ 33f6 8b9564ffffff 83fa10 722b 8b8d50ffffff 42 8bc1 }
$sequence_4hex{ 833800 7469 8b512c 8b02 85c0 7e60 48 }
$sequence_5hex{ c7464c00000000 5e c3 f7465000000004 74c2 8b4e28 }
$sequence_6hex{ 8a461c 88421c 5e 8917 5f 5d c3 }
$sequence_7hex{ 0fabd0 8801 8bce e9???????? 52 8d4e24 e8???????? }
$sequence_8hex{ c745fc00000000 c745f001000000 8b07 6a00 8b4004 c70407???????? }
$sequence_9hex{ c20800 83ec08 c6432c01 51 8bcb e8???????? 8ac8 }

Condition

7 of them and filesize < 1482752

In plain words (Heuristic)

  • The file must be smaller than 1482752 (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: 3354a5d3-02b5-57cc-8609-7576fd817a74

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