YARA · Malpedia signator rules
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:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "124924eb-8733-53ef-8986-8b12f071ae98"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.terra_stealer"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.terra_stealer_auto.yar#L1-L134"
= "N/A"
= "d50bf2f196f7161b4d6c1b2e83a16e07f83bdb3d8e1bf759ae6a81b465853475"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "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)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { e8???????? eb05 4c8b7c2460 41807f6700 7421 498b8f60010000 488d1509a31300 } | |
| $sequence_1 | hex | { e8???????? 83f875 0f858e020000 488bcb e8???????? 83f8ff 0f848f020000 } | |
| $sequence_2 | hex | { f6430466 0f841a010000 397708 0f84df010000 48635708 4c8d3d9c90e7ff 48035508 } | |
| $sequence_3 | hex | { f644c81220 7407 814e6400180000 488b4608 6642891460 498b07 803871 } | |
| $sequence_4 | hex | { e8???????? 48894558 e9???????? 488d0dafdf0a00 ff15???????? 48894550 4885c0 } | |
| $sequence_5 | hex | { eb0d e8???????? 488bf0 4889442428 33ff 4983e7f0 4c03fe } | |
| $sequence_6 | hex | { e8???????? 48897c2450 488b8c2428010000 4885c9 0f84f6030000 8bd5 498bcc } | |
| $sequence_7 | hex | { c785a40400001f2f535b c785a804000024011905 c785ac040000052f2a38 c785b00400003c2f303b c785b40400002b090321 c785b80400005d09391b c785bc04000018225e0c } | |
| $sequence_8 | hex | { e9???????? 488b8a60000000 e9???????? 488b8a00010000 e9???????? 488b8a08010000 e9???????? } | |
| $sequence_9 | hex | { e8???????? 8be8 4885f6 7452 4c8b4670 41f6403420 743f } |
Condition
7 of them and filesize < 4621312In 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.
Test this rule in your browser
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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)
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
| 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 |
Tags:FILE
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