YARA · Malpedia signator rules
MALPEDIA_Win_Slothfulmedia_Auto
autogenerated rule brought to you by yara-signator
MalwareSlothfulmediaMalpedia 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: Slothfulmedia.
It defines 15 patterns (0 text, 15 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-slothfulmedia-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Slothfulmedia_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "d9174ca3-ebdf-520c-93d3-8be8e8089548"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.slothfulmedia"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.slothfulmedia_auto.yar#L1-L164"
= "N/A"
= "0aba1adc88768da0c3eac6ae989ab23135f3cd09cdcdff04b83568cc95cb6407"
= 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 = { 56 57 33c0 33ff 6806020000 668985ecfdffff 8d85eefdffff }
$sequence_1 = { 89443110 8bc3 5b 5e c9 c3 }
$sequence_2 = { 8b86540e0000 3bc7 7438 57 }
$sequence_3 = { 8bf8 ff15???????? 56 6a00 50 8945fc e8???????? }
$sequence_4 = { 8bd8 895df0 3bdf 0f8434020000 }
$sequence_5 = { 6a07 5a 3bc2 0f8756090000 ff2485ed374000 838de8fdffffff 89b5c4fdffff }
$sequence_6 = { 0f84db000000 80bb3802000000 0f85ce000000 ff742410 ff15???????? }
$sequence_7 = { ff15???????? eb0a 53 8b1b }
$sequence_8 = { ffd6 85c0 7507 ffd7 83f805 }
$sequence_9 = { e8???????? 83c40c 6804010000 8d44240c 50 6a00 ff15???????? }
$sequence_10 = { 89842408020000 56 57 68d0070000 ff15???????? 33c0 }
$sequence_11 = { 6a00 8d4c2410 51 ff15???????? 8b8c2410020000 5f }
$sequence_12 = { 6689442414 e8???????? 83c40c 6a00 }
$sequence_13 = { 83f805 74ee 6804010000 8d54240c 6a00 52 e8???????? }
$sequence_14 = { 33c0 e8???????? 81c40c020000 c21000 3b0d???????? 7502 }
condition:
7 of them and filesize < 122880
}
Strings (15 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 56 57 33c0 33ff 6806020000 668985ecfdffff 8d85eefdffff } | |
| $sequence_1 | hex | { 89443110 8bc3 5b 5e c9 c3 } | |
| $sequence_2 | hex | { 8b86540e0000 3bc7 7438 57 } | |
| $sequence_3 | hex | { 8bf8 ff15???????? 56 6a00 50 8945fc e8???????? } | |
| $sequence_4 | hex | { 8bd8 895df0 3bdf 0f8434020000 } | |
| $sequence_5 | hex | { 6a07 5a 3bc2 0f8756090000 ff2485ed374000 838de8fdffffff 89b5c4fdffff } | |
| $sequence_6 | hex | { 0f84db000000 80bb3802000000 0f85ce000000 ff742410 ff15???????? } | |
| $sequence_7 | hex | { ff15???????? eb0a 53 8b1b } | |
| $sequence_8 | hex | { ffd6 85c0 7507 ffd7 83f805 } | |
| $sequence_9 | hex | { e8???????? 83c40c 6804010000 8d44240c 50 6a00 ff15???????? } | |
| $sequence_10 | hex | { 89842408020000 56 57 68d0070000 ff15???????? 33c0 } | |
| $sequence_11 | hex | { 6a00 8d4c2410 51 ff15???????? 8b8c2410020000 5f } | |
| $sequence_12 | hex | { 6689442414 e8???????? 83c40c 6a00 } | |
| $sequence_13 | hex | { 83f805 74ee 6804010000 8d54240c 6a00 52 e8???????? } | |
| $sequence_14 | hex | { 33c0 e8???????? 81c40c020000 c21000 3b0d???????? 7502 } |
Condition
7 of them and filesize < 122880In plain words (Heuristic)
- The file must be smaller than 122880 (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: d9174ca3-ebdf-520c-93d3-8be8e8089548
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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