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MALPEDIA_Win_Anchormtea_Auto

autogenerated rule brought to you by yara-signator

MalwareAnchormteaMalpedia 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: Anchormtea.

It defines 15 patterns (0 text, 15 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-anchormtea-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Anchormtea_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "18d81673-6908-5576-8bf2-16c50223836a"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.anchormtea"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.anchormtea_auto.yar#L1-L154"
		license_url = "N/A"
		logic_hash = "423335a0396b30079660bf8c19aabbadc6d6e2c8e4cc037968b34528cc3c2347"
		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 = { e9???????? f7d8 1bc0 83e002 }
		$sequence_1 = { 85c0 0f899d000000 51 68???????? }
		$sequence_2 = { 4489442430 488d542438 4533f6 458be9 4c89742440 4c8d4328 }
		$sequence_3 = { 66c1e008 0fb7c8 0fb68580fcffff 0bc8 }
		$sequence_4 = { b901000000 3bc1 0f44f9 4885db 7409 }
		$sequence_5 = { 4885c9 740a ff15???????? 48897b40 488b4b30 }
		$sequence_6 = { 0f8408ffffff 6808020000 6a00 56 }
		$sequence_7 = { ffb564f7ffff 52 e8???????? 8b8d70f7ffff c645fc00 8b8584f7ffff }
		$sequence_8 = { 492bed 48897e18 482be8 4c897e10 4903c5 488bcb }
		$sequence_9 = { c70016000000 eb2a 488bcb 4c3bfe 720d }
		$sequence_10 = { ba3c000000 488bce e8???????? 488bd8 4885c0 }
		$sequence_11 = { 8bec 83ec1c 53 8bd9 b9feffff7f 8bc1 }
		$sequence_12 = { 6a00 6a00 68???????? ffb51cf3ffff ffd7 }
		$sequence_13 = { 899fb0020000 2bde 8987b4020000 5f }
		$sequence_14 = { ba00040000 83f904 488d4df0 740e 4c8d0549600200 e8???????? }

	condition:
		7 of them and filesize < 839680
}

Strings (15 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e9???????? f7d8 1bc0 83e002 }
$sequence_1hex{ 85c0 0f899d000000 51 68???????? }
$sequence_2hex{ 4489442430 488d542438 4533f6 458be9 4c89742440 4c8d4328 }
$sequence_3hex{ 66c1e008 0fb7c8 0fb68580fcffff 0bc8 }
$sequence_4hex{ b901000000 3bc1 0f44f9 4885db 7409 }
$sequence_5hex{ 4885c9 740a ff15???????? 48897b40 488b4b30 }
$sequence_6hex{ 0f8408ffffff 6808020000 6a00 56 }
$sequence_7hex{ ffb564f7ffff 52 e8???????? 8b8d70f7ffff c645fc00 8b8584f7ffff }
$sequence_8hex{ 492bed 48897e18 482be8 4c897e10 4903c5 488bcb }
$sequence_9hex{ c70016000000 eb2a 488bcb 4c3bfe 720d }
$sequence_10hex{ ba3c000000 488bce e8???????? 488bd8 4885c0 }
$sequence_11hex{ 8bec 83ec1c 53 8bd9 b9feffff7f 8bc1 }
$sequence_12hex{ 6a00 6a00 68???????? ffb51cf3ffff ffd7 }
$sequence_13hex{ 899fb0020000 2bde 8987b4020000 5f }
$sequence_14hex{ ba00040000 83f904 488d4df0 740e 4c8d0549600200 e8???????? }

Condition

7 of them and filesize < 839680

In plain words (Heuristic)

  • The file must be smaller than 839680 (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: 18d81673-6908-5576-8bf2-16c50223836a

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