YARA · Malpedia signator rules
MALPEDIA_Win_Fickerstealer_Auto
autogenerated rule brought to you by yara-signator
MalwareFickerstealerMalpedia 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: Fickerstealer.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-fickerstealer-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Fickerstealer_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "6f85756a-c843-575d-b94d-3b2f734b01f0"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.fickerstealer"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.fickerstealer_auto.yar#L1-L134"
= "N/A"
= "aa8d1c23014e11385c0a5d073235ca609911431bbe1a8732876dd8cee6965456"
= 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 = { c70201000000 894a08 894204 eb0e 8b4df0 89d8 2b45ec }
$sequence_1 = { 83a4240802000000 e8???????? 6a08 58 8b4d08 e9???????? 8d842418020000 }
$sequence_2 = { 8919 895104 894108 e8???????? 894604 31c0 895608 }
$sequence_3 = { 5e 5d c3 89c1 52 56 e8???????? }
$sequence_4 = { 0d0000f07f 660f6ec0 e9???????? 8b4d0c 89c6 89ca 21da }
$sequence_5 = { f20f1000 f20f104808 8d45e4 09f1 8d75d4 894d94 89f1 }
$sequence_6 = { e8???????? 50 e8???????? 5e 5d c3 55 }
$sequence_7 = { 8d8c2400010000 e8???????? 8d8c2444010000 e8???????? 897c2408 89742404 31ff }
$sequence_8 = { 8b4dec e8???????? eb2a 31d2 eb18 85c9 7412 }
$sequence_9 = { a820 b900000000 0f45fe 0f45f1 247f 3c40 0f43f9 }
condition:
7 of them and filesize < 598016
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { c70201000000 894a08 894204 eb0e 8b4df0 89d8 2b45ec } | |
| $sequence_1 | hex | { 83a4240802000000 e8???????? 6a08 58 8b4d08 e9???????? 8d842418020000 } | |
| $sequence_2 | hex | { 8919 895104 894108 e8???????? 894604 31c0 895608 } | |
| $sequence_3 | hex | { 5e 5d c3 89c1 52 56 e8???????? } | |
| $sequence_4 | hex | { 0d0000f07f 660f6ec0 e9???????? 8b4d0c 89c6 89ca 21da } | |
| $sequence_5 | hex | { f20f1000 f20f104808 8d45e4 09f1 8d75d4 894d94 89f1 } | |
| $sequence_6 | hex | { e8???????? 50 e8???????? 5e 5d c3 55 } | |
| $sequence_7 | hex | { 8d8c2400010000 e8???????? 8d8c2444010000 e8???????? 897c2408 89742404 31ff } | |
| $sequence_8 | hex | { 8b4dec e8???????? eb2a 31d2 eb18 85c9 7412 } | |
| $sequence_9 | hex | { a820 b900000000 0f45fe 0f45f1 247f 3c40 0f43f9 } |
Condition
7 of them and filesize < 598016In plain words (Heuristic)
- The file must be smaller than 598016 (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: 6f85756a-c843-575d-b94d-3b2f734b01f0
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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