YARA · Malpedia signator rules
MALPEDIA_Win_Doublefinger_Auto
autogenerated rule brought to you by yara-signator
MalwareDoublefingerMalpedia 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: Doublefinger.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-doublefinger-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Doublefinger_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "3d9393e9-7773-5480-8061-9ef15c01ff97"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.doublefinger"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.doublefinger_auto.yar#L1-L117"
= "N/A"
= "853a77566abb8caa206ba73d4a3891e986337f4b63f9bfa4751336f42049cb30"
= 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 = { 8b442404 8b0c24 03c8 8bc1 03442408 8bc0 }
$sequence_1 = { 8b442448 39442444 7d27 41b87a000000 ba61000000 488b8c2468010000 e8???????? }
$sequence_2 = { 4533c0 8b942464010000 488b4c2450 e8???????? }
$sequence_3 = { 4883ec38 ba08000000 488d4c2420 e8???????? 6944244810270000 }
$sequence_4 = { 488b4c2450 e8???????? 48898424f8020000 8b442458 35beaeaeab }
$sequence_5 = { 4c89442418 4889542410 48894c2408 4883ec68 48c744243000000000 c744242880000000 c744242003000000 }
$sequence_6 = { 488bc1 eb7a 837c242000 7471 }
$sequence_7 = { 85c0 752d 41b975020000 4533c0 48c7c2ffffffff 488d8c2410030000 }
$sequence_8 = { 3565708005 8984246c010000 8b84246c010000 8b4c2460 33c8 }
$sequence_9 = { 488b8424a0020000 8b4c2460 3908 7502 }
condition:
7 of them and filesize < 115712
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8b442404 8b0c24 03c8 8bc1 03442408 8bc0 } | |
| $sequence_1 | hex | { 8b442448 39442444 7d27 41b87a000000 ba61000000 488b8c2468010000 e8???????? } | |
| $sequence_2 | hex | { 4533c0 8b942464010000 488b4c2450 e8???????? } | |
| $sequence_3 | hex | { 4883ec38 ba08000000 488d4c2420 e8???????? 6944244810270000 } | |
| $sequence_4 | hex | { 488b4c2450 e8???????? 48898424f8020000 8b442458 35beaeaeab } | |
| $sequence_5 | hex | { 4c89442418 4889542410 48894c2408 4883ec68 48c744243000000000 c744242880000000 c744242003000000 } | |
| $sequence_6 | hex | { 488bc1 eb7a 837c242000 7471 } | |
| $sequence_7 | hex | { 85c0 752d 41b975020000 4533c0 48c7c2ffffffff 488d8c2410030000 } | |
| $sequence_8 | hex | { 3565708005 8984246c010000 8b84246c010000 8b4c2460 33c8 } | |
| $sequence_9 | hex | { 488b8424a0020000 8b4c2460 3908 7502 } |
Condition
7 of them and filesize < 115712In plain words (Heuristic)
- The file must be smaller than 115712 (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: 3d9393e9-7773-5480-8061-9ef15c01ff97
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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