YARA · Malpedia signator rules
MALPEDIA_Win_Webc2_Rave_Auto
autogenerated rule brought to you by yara-signator
MalwareWebc2 RaveMalpedia 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: Webc2 Rave.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-webc2-rave-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Webc2_Rave_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "5cefe188-b2d5-5d9e-9fe6-d10eb4d1e4b8"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.webc2_rave"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.webc2_rave_auto.yar#L1-L117"
= "N/A"
= "e5f1d782ff65857d244868f23af182288f59ab9fb6a377cec826015ac4afc033"
= 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 = { 83f830 720b 83f839 7706 83c004 c20400 83f82d }
$sequence_1 = { 85db 759e 8dbc242c010000 83c9ff 33c0 }
$sequence_2 = { 03de 81e3ff000000 8bf3 8a5c3410 885c0c10 }
$sequence_3 = { be???????? 8d8c241c010000 8a01 8ad0 3a06 }
$sequence_4 = { 8b3d???????? 8d542414 8d4604 51 }
$sequence_5 = { b941000000 33c0 8dbc24b0020000 83c410 }
$sequence_6 = { 33c9 eb05 1bc9 83d9ff 85c9 7423 8b4508 }
$sequence_7 = { 56 57 b900010000 33c0 8d7c2414 }
$sequence_8 = { 5d 5b 81c454030000 c3 6a20 ffd7 }
$sequence_9 = { 85c0 0f8426010000 8d4c244c 6804010000 8d542450 }
condition:
7 of them and filesize < 57344
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 83f830 720b 83f839 7706 83c004 c20400 83f82d } | |
| $sequence_1 | hex | { 85db 759e 8dbc242c010000 83c9ff 33c0 } | |
| $sequence_2 | hex | { 03de 81e3ff000000 8bf3 8a5c3410 885c0c10 } | |
| $sequence_3 | hex | { be???????? 8d8c241c010000 8a01 8ad0 3a06 } | |
| $sequence_4 | hex | { 8b3d???????? 8d542414 8d4604 51 } | |
| $sequence_5 | hex | { b941000000 33c0 8dbc24b0020000 83c410 } | |
| $sequence_6 | hex | { 33c9 eb05 1bc9 83d9ff 85c9 7423 8b4508 } | |
| $sequence_7 | hex | { 56 57 b900010000 33c0 8d7c2414 } | |
| $sequence_8 | hex | { 5d 5b 81c454030000 c3 6a20 ffd7 } | |
| $sequence_9 | hex | { 85c0 0f8426010000 8d4c244c 6804010000 8d542450 } |
Condition
7 of them and filesize < 57344In plain words (Heuristic)
- The file must be smaller than 57344 (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: 5cefe188-b2d5-5d9e-9fe6-d10eb4d1e4b8
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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