YARA · Malpedia signator rules
MALPEDIA_Win_Slimagent_Auto
autogenerated rule brought to you by yara-signator
MalwareSlimagentMalpedia 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: Slimagent.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-slimagent-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Slimagent_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "99a5dbc6-3135-5e93-aab6-9b79abe889ca"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.slimagent"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.slimagent_auto.yar#L1-L131"
= "N/A"
= "f50f752fc0d7d8f3f01b7dc9b2a072e61b78695da29a813e76e8d4486d4da2ea"
= 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 = { 458b949b14350400 eb08 458b949bdc340400 41ffc2 448d46ff bf1f85eb51 }
$sequence_1 = { e8???????? 488d4df8 e8???????? 488d1543720200 488d4df8 e8???????? cc }
$sequence_2 = { e8???????? cc 488d4c2438 e8???????? 488d15bbc20200 488d4c2438 e8???????? }
$sequence_3 = { 488b4f10 48894daf 498bc5 482bc2 483bc1 0f82f3030000 49837f1808 }
$sequence_4 = { 0f85e3000000 4d3bc1 0f84d0000000 8b7500 498b9cf7e0550500 4885db 740b }
$sequence_5 = { 8bd7 4c8bf7 498b84c3b05c0500 4e8d0cfd3e000000 4c03c8 498bc1 403838 }
$sequence_6 = { 498bd9 498bf8 8bf2 4c8d0d99020100 488be9 4c8d0587020100 488d1588020100 }
$sequence_7 = { 488b4c2460 ff15???????? 488b4dc0 ff15???????? 0f1045a0 }
$sequence_8 = { 4885db 740b 493bde 0f8599000000 eb6b 4d8bbcf788130400 33d2 }
$sequence_9 = { ff15???????? 488bc8 488d15202c0300 ff15???????? 488bf0 4885c0 745c }
condition:
7 of them and filesize < 769024
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 458b949b14350400 eb08 458b949bdc340400 41ffc2 448d46ff bf1f85eb51 } | |
| $sequence_1 | hex | { e8???????? 488d4df8 e8???????? 488d1543720200 488d4df8 e8???????? cc } | |
| $sequence_2 | hex | { e8???????? cc 488d4c2438 e8???????? 488d15bbc20200 488d4c2438 e8???????? } | |
| $sequence_3 | hex | { 488b4f10 48894daf 498bc5 482bc2 483bc1 0f82f3030000 49837f1808 } | |
| $sequence_4 | hex | { 0f85e3000000 4d3bc1 0f84d0000000 8b7500 498b9cf7e0550500 4885db 740b } | |
| $sequence_5 | hex | { 8bd7 4c8bf7 498b84c3b05c0500 4e8d0cfd3e000000 4c03c8 498bc1 403838 } | |
| $sequence_6 | hex | { 498bd9 498bf8 8bf2 4c8d0d99020100 488be9 4c8d0587020100 488d1588020100 } | |
| $sequence_7 | hex | { 488b4c2460 ff15???????? 488b4dc0 ff15???????? 0f1045a0 } | |
| $sequence_8 | hex | { 4885db 740b 493bde 0f8599000000 eb6b 4d8bbcf788130400 33d2 } | |
| $sequence_9 | hex | { ff15???????? 488bc8 488d15202c0300 ff15???????? 488bf0 4885c0 745c } |
Condition
7 of them and filesize < 769024In plain words (Heuristic)
- The file must be smaller than 769024 (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: 99a5dbc6-3135-5e93-aab6-9b79abe889ca
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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