YARA · Malpedia signator rules
MALPEDIA_Win_Icondown_Auto
autogenerated rule brought to you by yara-signator
MalwareIcondownMalpedia 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: Icondown.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-icondown-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Icondown_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "56c796aa-5be4-5e51-9ab3-a706a3665c10"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.icondown"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.icondown_auto.yar#L1-L124"
= "N/A"
= "6ffec7d7bc8d3d60657be0a2f8145ec147295e9b9c3506a13856c59a033b0c39"
= 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 = { c64424272e c644242865 c644242978 c644242a65 885c242b 885c242c }
$sequence_1 = { 50 8d4c241c c744241400000000 e8???????? 85c0 740c 8b442418 }
$sequence_2 = { bf01000000 e8???????? 8b0d???????? 8b4004 8b742440 6a00 }
$sequence_3 = { 5e 5d 5b 81c40c010000 c3 e8???????? }
$sequence_4 = { 55 56 33d2 57 8a11 8b3b 0fafd7 }
$sequence_5 = { 0f8759010000 ff24851f7c4300 017d1c 8a043b }
$sequence_6 = { 5b 81c45c0b0000 c3 8b44241c 83f805 0f8721030000 ff2485bc2f4000 }
$sequence_7 = { c786bc00000078024400 c786c00000004c024400 c786c40000002c024400 c786c800000014024400 c786cc000000f4014400 c786d0000000e0014400 }
$sequence_8 = { 8d047f 8d04c560044500 50 ffd3 5f }
$sequence_9 = { 6a00 6a00 6804130000 50 ff15???????? 3bf8 }
condition:
7 of them and filesize < 5505024
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { c64424272e c644242865 c644242978 c644242a65 885c242b 885c242c } | |
| $sequence_1 | hex | { 50 8d4c241c c744241400000000 e8???????? 85c0 740c 8b442418 } | |
| $sequence_2 | hex | { bf01000000 e8???????? 8b0d???????? 8b4004 8b742440 6a00 } | |
| $sequence_3 | hex | { 5e 5d 5b 81c40c010000 c3 e8???????? } | |
| $sequence_4 | hex | { 55 56 33d2 57 8a11 8b3b 0fafd7 } | |
| $sequence_5 | hex | { 0f8759010000 ff24851f7c4300 017d1c 8a043b } | |
| $sequence_6 | hex | { 5b 81c45c0b0000 c3 8b44241c 83f805 0f8721030000 ff2485bc2f4000 } | |
| $sequence_7 | hex | { c786bc00000078024400 c786c00000004c024400 c786c40000002c024400 c786c800000014024400 c786cc000000f4014400 c786d0000000e0014400 } | |
| $sequence_8 | hex | { 8d047f 8d04c560044500 50 ffd3 5f } | |
| $sequence_9 | hex | { 6a00 6a00 6804130000 50 ff15???????? 3bf8 } |
Condition
7 of them and filesize < 5505024In plain words (Heuristic)
- The file must be smaller than 5505024 (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: 56c796aa-5be4-5e51-9ab3-a706a3665c10
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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