YARA · Malpedia signator rules
MALPEDIA_Win_Webc2_Div_Auto
autogenerated rule brought to you by yara-signator
MalwareWebc2 DivMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2026-01-05
- Modified
- 2026-01-06
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Webc2 Div.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-webc2-div-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Webc2_Div_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "0487cd24-3efb-59f7-a789-643d02cfd1b0"
= "2026-01-05"
= "2026-01-06"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.webc2_div"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.webc2_div_auto.yar#L1-L122"
= "N/A"
= "fd0dce640f74e7a720d2663bbcad05a022471937161b3c94d0276bbf1eb69f1b"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260105"
= "19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79"
= "20251219"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 7474 56 6800000080 56 56 }
$sequence_1 = { 8078056e 7512 80780663 750c 80780765 7506 }
$sequence_2 = { 8d7d02 83c9ff c70001000000 8d5008 33c0 f2ae f7d1 }
$sequence_3 = { c3 55 e8???????? 59 33c0 ebf0 81ec10020000 }
$sequence_4 = { 7573 80780661 756d 80780766 }
$sequence_5 = { 7f09 0fbed0 83ea17 89148e 8d6901 bf16000000 8bc5 }
$sequence_6 = { 6a20 53 ffd6 59 85c0 }
$sequence_7 = { ff742410 eb14 817c2410808d5b00 771a 8b442414 }
$sequence_8 = { 83e803 bf???????? 80240100 83c9ff 33c0 f2ae f7d1 }
$sequence_9 = { 8b048e 8d1c9510114000 8b17 2bc2 99 }
condition:
7 of them and filesize < 32768
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 7474 56 6800000080 56 56 } | |
| $sequence_1 | hex | { 8078056e 7512 80780663 750c 80780765 7506 } | |
| $sequence_2 | hex | { 8d7d02 83c9ff c70001000000 8d5008 33c0 f2ae f7d1 } | |
| $sequence_3 | hex | { c3 55 e8???????? 59 33c0 ebf0 81ec10020000 } | |
| $sequence_4 | hex | { 7573 80780661 756d 80780766 } | |
| $sequence_5 | hex | { 7f09 0fbed0 83ea17 89148e 8d6901 bf16000000 8bc5 } | |
| $sequence_6 | hex | { 6a20 53 ffd6 59 85c0 } | |
| $sequence_7 | hex | { ff742410 eb14 817c2410808d5b00 771a 8b442414 } | |
| $sequence_8 | hex | { 83e803 bf???????? 80240100 83c9ff 33c0 f2ae f7d1 } | |
| $sequence_9 | hex | { 8b048e 8d1c9510114000 8b17 2bc2 99 } |
Condition
7 of them and filesize < 32768In plain words (Heuristic)
- The file must be smaller than 32768 (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: 0487cd24-3efb-59f7-a789-643d02cfd1b0
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20260105 |
| malpedia_hash | 19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79 |
| malpedia_version | 20251219 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
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