YARA · Malpedia signator rules
MALPEDIA_Win_Ismagent_Auto
autogenerated rule brought to you by yara-signator
MalwareIsmagentMalpedia 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: Ismagent.
It defines 8 patterns (0 text, 8 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-ismagent-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ismagent_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "d30a21b6-9168-58ac-be0f-21bd6de3a54f"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.ismagent"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ismagent_auto.yar#L1-L107"
= "N/A"
= "b9bb1dae4329c5eb1e40c0a1e6a1b949614e1a70afb3bd7bafc8905aff0f960d"
= 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 = { 8816 eb3e c6060d 8b048d48404200 8854382a eb2e }
$sequence_1 = { 8b048d48404200 5b 8b543818 8955ec }
$sequence_2 = { 8bd7 2bd1 8a01 8d4901 884411ff 84c0 }
$sequence_3 = { 6a44 83e103 6a00 f3a4 50 e8???????? 8b7c244c }
$sequence_4 = { c1f806 6bc930 8b048548404200 f644082801 7406 8b440818 }
$sequence_5 = { 53 8b5d10 8b048548404200 56 8b7508 57 8b4c0818 }
$sequence_6 = { 8a01 41 84c0 75f9 2bca 0f8417010000 8d8424500b0000 }
$sequence_7 = { 47 42 8d7001 90 8a08 40 }
condition:
7 of them and filesize < 327680
}
Strings (8 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8816 eb3e c6060d 8b048d48404200 8854382a eb2e } | |
| $sequence_1 | hex | { 8b048d48404200 5b 8b543818 8955ec } | |
| $sequence_2 | hex | { 8bd7 2bd1 8a01 8d4901 884411ff 84c0 } | |
| $sequence_3 | hex | { 6a44 83e103 6a00 f3a4 50 e8???????? 8b7c244c } | |
| $sequence_4 | hex | { c1f806 6bc930 8b048548404200 f644082801 7406 8b440818 } | |
| $sequence_5 | hex | { 53 8b5d10 8b048548404200 56 8b7508 57 8b4c0818 } | |
| $sequence_6 | hex | { 8a01 41 84c0 75f9 2bca 0f8417010000 8d8424500b0000 } | |
| $sequence_7 | hex | { 47 42 8d7001 90 8a08 40 } |
Condition
7 of them and filesize < 327680In plain words (Heuristic)
- The file must be smaller than 327680 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: d30a21b6-9168-58ac-be0f-21bd6de3a54f
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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