YARA · Malpedia signator rules
MALPEDIA_Win_Icexloader_Auto
autogenerated rule brought to you by yara-signator
MalwareIcexloaderMalpedia 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: Icexloader.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-icexloader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Icexloader_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "e67eae07-fb93-5b45-9602-470a196337dd"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.icexloader"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.icexloader_auto.yar#L1-L133"
= "N/A"
= "e7d8b7bb37a7ff9b0391c595d5a3e089e1233fa9d3012ba9f46251bb3d0e3e70"
= 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 = { 5d c3 55 89e5 53 83ec74 e8???????? }
$sequence_1 = { 89d9 89d0 31db 31d2 01c8 8b4dd4 11da }
$sequence_2 = { 8b4508 83c014 8945f8 8b4508 8b4010 8945f4 8b450c }
$sequence_3 = { 5d e9???????? c705????????18000000 c705????????04000000 c605????????11 c705????????a0c54300 c705????????00000000 }
$sequence_4 = { 744b 8b5210 897d08 8d65f4 89f1 5b 5e }
$sequence_5 = { 55 ba7c000000 89e5 56 53 83ec30 894de4 }
$sequence_6 = { 0f841a010000 8b85ecfeffff 8b95ecfeffff 8b5210 83ea01 83c204 }
$sequence_7 = { 0fb7444b08 8d7101 8d9000280000 6681faff07 7718 0fb7547308 8d7102 }
$sequence_8 = { 898554ffffff c78510ffffff00000000 c745a000000000 8b45a0 89459c 8b459c 894590 }
$sequence_9 = { f7d8 eb03 42 eb94 83c40c 5b 5e }
condition:
7 of them and filesize < 656384
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 5d c3 55 89e5 53 83ec74 e8???????? } | |
| $sequence_1 | hex | { 89d9 89d0 31db 31d2 01c8 8b4dd4 11da } | |
| $sequence_2 | hex | { 8b4508 83c014 8945f8 8b4508 8b4010 8945f4 8b450c } | |
| $sequence_3 | hex | { 5d e9???????? c705????????18000000 c705????????04000000 c605????????11 c705????????a0c54300 c705????????00000000 } | |
| $sequence_4 | hex | { 744b 8b5210 897d08 8d65f4 89f1 5b 5e } | |
| $sequence_5 | hex | { 55 ba7c000000 89e5 56 53 83ec30 894de4 } | |
| $sequence_6 | hex | { 0f841a010000 8b85ecfeffff 8b95ecfeffff 8b5210 83ea01 83c204 } | |
| $sequence_7 | hex | { 0fb7444b08 8d7101 8d9000280000 6681faff07 7718 0fb7547308 8d7102 } | |
| $sequence_8 | hex | { 898554ffffff c78510ffffff00000000 c745a000000000 8b45a0 89459c 8b459c 894590 } | |
| $sequence_9 | hex | { f7d8 eb03 42 eb94 83c40c 5b 5e } |
Condition
7 of them and filesize < 656384In plain words (Heuristic)
- The file must be smaller than 656384 (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: e67eae07-fb93-5b45-9602-470a196337dd
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