YARA · Malpedia signator rules
MALPEDIA_Win_Venomloader_Auto
autogenerated rule brought to you by yara-signator
MalwareVenomloaderMalpedia 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: Venomloader.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-venomloader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Venomloader_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "681c577e-0d22-5b07-a8e2-fee5f4d454ec"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.venomloader"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.venomloader_auto.yar#L1-L133"
= "N/A"
= "f3aa49e2b0f5413e9d10c518f936557aeb396c63445f44152c2ce0d27cfa4f88"
= 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 = { 53 4883ec20 488d0594160400 80796f00 488901 4889cb 7438 }
$sequence_1 = { 488379e800 0f8452fdffff 4084ff 0f8549fdffff 4584ff 0f8416030000 488b842400010000 }
$sequence_2 = { 89da 4889f1 4189c5 e8???????? 85c0 7506 }
$sequence_3 = { 4829c8 48d1f8 48894350 4889da 4889f1 e8???????? 488d0593d00200 }
$sequence_4 = { 5d c3 55 53 4883ec38 488d6c2430 488d45f7 }
$sequence_5 = { 85d2 752e 8340f801 48894308 488d05ff060600 488903 4883c438 }
$sequence_6 = { 488d157ffc0400 4889d9 e8???????? 488b05???????? 4889f1 4883c010 488983e0000000 }
$sequence_7 = { 488d1509b00a00 c70002000000 48895008 c3 488d15f7af0a00 c70002000000 48895008 }
$sequence_8 = { 29d0 85c0 0f8fcb020000 4183fd6f 0f8429020000 4439fa 0f8d88020000 }
$sequence_9 = { 85d2 0f8f64ffffff 4883e918 4c89e2 e8???????? 488b8424b0000000 e9???????? }
condition:
7 of them and filesize < 2592768
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 53 4883ec20 488d0594160400 80796f00 488901 4889cb 7438 } | |
| $sequence_1 | hex | { 488379e800 0f8452fdffff 4084ff 0f8549fdffff 4584ff 0f8416030000 488b842400010000 } | |
| $sequence_2 | hex | { 89da 4889f1 4189c5 e8???????? 85c0 7506 } | |
| $sequence_3 | hex | { 4829c8 48d1f8 48894350 4889da 4889f1 e8???????? 488d0593d00200 } | |
| $sequence_4 | hex | { 5d c3 55 53 4883ec38 488d6c2430 488d45f7 } | |
| $sequence_5 | hex | { 85d2 752e 8340f801 48894308 488d05ff060600 488903 4883c438 } | |
| $sequence_6 | hex | { 488d157ffc0400 4889d9 e8???????? 488b05???????? 4889f1 4883c010 488983e0000000 } | |
| $sequence_7 | hex | { 488d1509b00a00 c70002000000 48895008 c3 488d15f7af0a00 c70002000000 48895008 } | |
| $sequence_8 | hex | { 29d0 85c0 0f8fcb020000 4183fd6f 0f8429020000 4439fa 0f8d88020000 } | |
| $sequence_9 | hex | { 85d2 0f8f64ffffff 4883e918 4c89e2 e8???????? 488b8424b0000000 e9???????? } |
Condition
7 of them and filesize < 2592768In plain words (Heuristic)
- The file must be smaller than 2592768 (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: 681c577e-0d22-5b07-a8e2-fee5f4d454ec
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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