YARA · Malpedia signator rules
MALPEDIA_Win_Revc2_Auto
autogenerated rule brought to you by yara-signator
- 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: Revc2.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-revc2-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Revc2_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "4c95db96-0a02-5216-ab93-0489734f34c6"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.revc2"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.revc2_auto.yar#L1-L134"
= "N/A"
= "9766a2dda3a35ffc17577c5196440407523e45a8c26acb0e07f70d0974815690"
= 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 = { eb4b ba01000000 eb44 488d054a031600 41b980620100 4c8d0581fe1500 4889442420 }
$sequence_1 = { 90 488b8da8010000 4833cc e8???????? 4c8d9c24d0020000 498b5b30 410f2873f0 }
$sequence_2 = { e8???????? 8bd8 488b07 488b7c2440 488906 85db 750b }
$sequence_3 = { e9???????? 488d050e011700 bb0b000000 8bcb 4889442420 41b942300100 4c8d0539fc1600 }
$sequence_4 = { bf04000000 eb2d 4183f864 720b bf03000000 448d5f61 eb1c }
$sequence_5 = { e8???????? 488bf0 4885c0 0f8488000000 0f57c0 33c0 0f1106 }
$sequence_6 = { 4d8bd8 0f85b7020000 498b08 4c3bc9 0f85ce000000 498b4810 80791800 }
$sequence_7 = { e8???????? 488bd8 48894508 8b45e4 8945e4 0fb6463f 884588 }
$sequence_8 = { ba07000000 488995b0080000 664489bd98080000 488b4c2440 488b01 4c8931 4885c0 }
$sequence_9 = { 8b4530 03c9 3345fc 0bf1 33451c 418bcf 334504 }
condition:
7 of them and filesize < 5108736
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { eb4b ba01000000 eb44 488d054a031600 41b980620100 4c8d0581fe1500 4889442420 } | |
| $sequence_1 | hex | { 90 488b8da8010000 4833cc e8???????? 4c8d9c24d0020000 498b5b30 410f2873f0 } | |
| $sequence_2 | hex | { e8???????? 8bd8 488b07 488b7c2440 488906 85db 750b } | |
| $sequence_3 | hex | { e9???????? 488d050e011700 bb0b000000 8bcb 4889442420 41b942300100 4c8d0539fc1600 } | |
| $sequence_4 | hex | { bf04000000 eb2d 4183f864 720b bf03000000 448d5f61 eb1c } | |
| $sequence_5 | hex | { e8???????? 488bf0 4885c0 0f8488000000 0f57c0 33c0 0f1106 } | |
| $sequence_6 | hex | { 4d8bd8 0f85b7020000 498b08 4c3bc9 0f85ce000000 498b4810 80791800 } | |
| $sequence_7 | hex | { e8???????? 488bd8 48894508 8b45e4 8945e4 0fb6463f 884588 } | |
| $sequence_8 | hex | { ba07000000 488995b0080000 664489bd98080000 488b4c2440 488b01 4c8931 4885c0 } | |
| $sequence_9 | hex | { 8b4530 03c9 3345fc 0bf1 33451c 418bcf 334504 } |
Condition
7 of them and filesize < 5108736In plain words (Heuristic)
- The file must be smaller than 5108736 (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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Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.
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: 4c95db96-0a02-5216-ab93-0489734f34c6
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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