YARA · Malpedia signator rules
MALPEDIA_Win_Whiskerspy_Auto
autogenerated rule brought to you by yara-signator
MalwareWhiskerspyMalpedia 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: Whiskerspy.
It defines 15 patterns (0 text, 15 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-whiskerspy-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Whiskerspy_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "4650a155-71e3-5ebe-a61c-a966bb9c472b"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.whiskerspy"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.whiskerspy_auto.yar#L1-L148"
= "N/A"
= "2630783c91cbe95946721b24ba2881caf0995b4882ab207ac281b90db6db950c"
= 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 = { 33ff 8b06 8bcf d3e8 a801 }
$sequence_1 = { 8d4a28 8d5301 e8???????? 488bf8 }
$sequence_2 = { 2c05 3441 88840d080b0000 48ffc1 }
$sequence_3 = { 8845e0 0fb64102 8845e1 0fb64101 8845e2 }
$sequence_4 = { ba01000000 8bca e8???????? 4c8be8 488945c7 }
$sequence_5 = { e8???????? badd9a1c2d 488905???????? 488bce e8???????? }
$sequence_6 = { 6689480c 0f1045ef 488b03 0f11400e 0f104dff }
$sequence_7 = { e8???????? c7474000000000 4c8d9c24b0010000 498b5b30 498b7340 }
$sequence_8 = { 0175d0 eb0c 51 8d4dcc }
$sequence_9 = { 015508 85ff 0f8f6cffffff 7c08 }
$sequence_10 = { 015dd0 eb09 51 8d4dcc }
$sequence_11 = { 015de8 eb09 50 8d4de4 }
$sequence_12 = { 01742418 83c40c 8b412c 2930 }
$sequence_13 = { 0144241c 2bd8 83c410 8bd3 }
$sequence_14 = { 0130 8b7510 83794c00 8bd3 7451 e8???????? 8bd3 }
condition:
7 of them and filesize < 591872
}
Strings (15 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 33ff 8b06 8bcf d3e8 a801 } | |
| $sequence_1 | hex | { 8d4a28 8d5301 e8???????? 488bf8 } | |
| $sequence_2 | hex | { 2c05 3441 88840d080b0000 48ffc1 } | |
| $sequence_3 | hex | { 8845e0 0fb64102 8845e1 0fb64101 8845e2 } | |
| $sequence_4 | hex | { ba01000000 8bca e8???????? 4c8be8 488945c7 } | |
| $sequence_5 | hex | { e8???????? badd9a1c2d 488905???????? 488bce e8???????? } | |
| $sequence_6 | hex | { 6689480c 0f1045ef 488b03 0f11400e 0f104dff } | |
| $sequence_7 | hex | { e8???????? c7474000000000 4c8d9c24b0010000 498b5b30 498b7340 } | |
| $sequence_8 | hex | { 0175d0 eb0c 51 8d4dcc } | |
| $sequence_9 | hex | { 015508 85ff 0f8f6cffffff 7c08 } | |
| $sequence_10 | hex | { 015dd0 eb09 51 8d4dcc } | |
| $sequence_11 | hex | { 015de8 eb09 50 8d4de4 } | |
| $sequence_12 | hex | { 01742418 83c40c 8b412c 2930 } | |
| $sequence_13 | hex | { 0144241c 2bd8 83c410 8bd3 } | |
| $sequence_14 | hex | { 0130 8b7510 83794c00 8bd3 7451 e8???????? 8bd3 } |
Condition
7 of them and filesize < 591872In plain words (Heuristic)
- The file must be smaller than 591872 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
Test this rule in your browser
Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.
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: 4650a155-71e3-5ebe-a61c-a966bb9c472b
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
Related rules
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04
- MalwareMalpedia signator rules· Felix Bilstein - yara-signator at cocacoding dot com· 2026-05-04