YARA · Malpedia signator rules
MALPEDIA_Win_Geminiduke_Auto
autogenerated rule brought to you by yara-signator
MalwareGeminidukeMalpedia 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: Geminiduke.
It defines 14 patterns (0 text, 14 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-geminiduke-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Geminiduke_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "c813f2e4-4bb2-55df-aeb2-26a57862cea7"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.geminiduke"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.geminiduke_auto.yar#L1-L154"
= "N/A"
= "dc6f874b6b51fa873cea776bdf1fa1a6877110f2ddb71159112001b39ae77ae7"
= 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 = { 8b7c2410 8b442414 8b4c2418 f3aa 5f 59 }
$sequence_1 = { 6819000200 6a00 68???????? e8???????? 83c404 }
$sequence_2 = { 50 51 57 8b7c2410 }
$sequence_3 = { 83c404 50 6801000080 ff15???????? 85c0 7407 33c0 }
$sequence_4 = { 034590 03c8 894dd0 8b45f8 }
$sequence_5 = { 034584 8b8d64ffffff c1e907 8b9564ffffff c1e219 0bca 8b9564ffffff }
$sequence_6 = { 034590 8b8d70ffffff c1e907 8b9570ffffff }
$sequence_7 = { 03459c 03c8 894ddc 8b45fc }
$sequence_8 = { 57 8b7c240c 6a01 6a00 8bf1 }
$sequence_9 = { 8ac8 80e961 80f919 7703 b001 c3 2c41 }
$sequence_10 = { 2500800000 50 8bcf e8???????? 8be8 8bc3 2500020000 }
$sequence_11 = { 8b770c 89442410 8b4704 8bc8 }
$sequence_12 = { 56 57 8bf9 8b4724 8b5f08 8b770c 89442410 }
$sequence_13 = { 7704 8ac1 0430 8ad1 80ea0a 80fa05 7705 }
condition:
7 of them and filesize < 327680
}
Strings (14 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8b7c2410 8b442414 8b4c2418 f3aa 5f 59 } | |
| $sequence_1 | hex | { 6819000200 6a00 68???????? e8???????? 83c404 } | |
| $sequence_2 | hex | { 50 51 57 8b7c2410 } | |
| $sequence_3 | hex | { 83c404 50 6801000080 ff15???????? 85c0 7407 33c0 } | |
| $sequence_4 | hex | { 034590 03c8 894dd0 8b45f8 } | |
| $sequence_5 | hex | { 034584 8b8d64ffffff c1e907 8b9564ffffff c1e219 0bca 8b9564ffffff } | |
| $sequence_6 | hex | { 034590 8b8d70ffffff c1e907 8b9570ffffff } | |
| $sequence_7 | hex | { 03459c 03c8 894ddc 8b45fc } | |
| $sequence_8 | hex | { 57 8b7c240c 6a01 6a00 8bf1 } | |
| $sequence_9 | hex | { 8ac8 80e961 80f919 7703 b001 c3 2c41 } | |
| $sequence_10 | hex | { 2500800000 50 8bcf e8???????? 8be8 8bc3 2500020000 } | |
| $sequence_11 | hex | { 8b770c 89442410 8b4704 8bc8 } | |
| $sequence_12 | hex | { 56 57 8bf9 8b4724 8b5f08 8b770c 89442410 } | |
| $sequence_13 | hex | { 7704 8ac1 0430 8ad1 80ea0a 80fa05 7705 } |
Condition
7 of them and filesize < 327680In plain words (Heuristic)
- The file must be smaller than 327680 (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: c813f2e4-4bb2-55df-aeb2-26a57862cea7
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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