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MALPEDIA_Win_Terra_Stealer_Auto

autogenerated rule brought to you by yara-signator

MalwareTerra StealerMalpedia 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: Terra Stealer.

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

Summary generated from the rule's metadata and condition.

Rule source

win-terra-stealer-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Terra_Stealer_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "124924eb-8733-53ef-8986-8b12f071ae98"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.terra_stealer"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.terra_stealer_auto.yar#L1-L134"
		license_url = "N/A"
		logic_hash = "d50bf2f196f7161b4d6c1b2e83a16e07f83bdb3d8e1bf759ae6a81b465853475"
		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 = { e8???????? eb05 4c8b7c2460 41807f6700 7421 498b8f60010000 488d1509a31300 }
		$sequence_1 = { e8???????? 83f875 0f858e020000 488bcb e8???????? 83f8ff 0f848f020000 }
		$sequence_2 = { f6430466 0f841a010000 397708 0f84df010000 48635708 4c8d3d9c90e7ff 48035508 }
		$sequence_3 = { f644c81220 7407 814e6400180000 488b4608 6642891460 498b07 803871 }
		$sequence_4 = { e8???????? 48894558 e9???????? 488d0dafdf0a00 ff15???????? 48894550 4885c0 }
		$sequence_5 = { eb0d e8???????? 488bf0 4889442428 33ff 4983e7f0 4c03fe }
		$sequence_6 = { e8???????? 48897c2450 488b8c2428010000 4885c9 0f84f6030000 8bd5 498bcc }
		$sequence_7 = { c785a40400001f2f535b c785a804000024011905 c785ac040000052f2a38 c785b00400003c2f303b c785b40400002b090321 c785b80400005d09391b c785bc04000018225e0c }
		$sequence_8 = { e9???????? 488b8a60000000 e9???????? 488b8a00010000 e9???????? 488b8a08010000 e9???????? }
		$sequence_9 = { e8???????? 8be8 4885f6 7452 4c8b4670 41f6403420 743f }

	condition:
		7 of them and filesize < 4621312
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ e8???????? eb05 4c8b7c2460 41807f6700 7421 498b8f60010000 488d1509a31300 }
$sequence_1hex{ e8???????? 83f875 0f858e020000 488bcb e8???????? 83f8ff 0f848f020000 }
$sequence_2hex{ f6430466 0f841a010000 397708 0f84df010000 48635708 4c8d3d9c90e7ff 48035508 }
$sequence_3hex{ f644c81220 7407 814e6400180000 488b4608 6642891460 498b07 803871 }
$sequence_4hex{ e8???????? 48894558 e9???????? 488d0dafdf0a00 ff15???????? 48894550 4885c0 }
$sequence_5hex{ eb0d e8???????? 488bf0 4889442428 33ff 4983e7f0 4c03fe }
$sequence_6hex{ e8???????? 48897c2450 488b8c2428010000 4885c9 0f84f6030000 8bd5 498bcc }
$sequence_7hex{ c785a40400001f2f535b c785a804000024011905 c785ac040000052f2a38 c785b00400003c2f303b c785b40400002b090321 c785b80400005d09391b c785bc04000018225e0c }
$sequence_8hex{ e9???????? 488b8a60000000 e9???????? 488b8a00010000 e9???????? 488b8a08010000 e9???????? }
$sequence_9hex{ e8???????? 8be8 4885f6 7452 4c8b4670 41f6403420 743f }

Condition

7 of them and filesize < 4621312

In plain words (Heuristic)

  • The file must be smaller than 4621312 (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: 124924eb-8733-53ef-8986-8b12f071ae98

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