YARA · Malpedia signator rules
MALPEDIA_Win_Ghostemperor_Auto
autogenerated rule brought to you by yara-signator
MalwareGhostemperorMalpedia 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 / 73
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Ghostemperor.
It defines 24 patterns (0 text, 24 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-ghostemperor-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ghostemperor_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "03561f3b-0abe-57dc-b978-3c939c0fe915"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.ghostemperor"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ghostemperor_auto.yar#L1-L226"
= "N/A"
= "3fa3d4eb8704961c7c97c6073c0242bdef28b1790df0c9cdaa55e317b1e02d8f"
= 75
= 73
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { ff15???????? 89f0 4883c420 5b 5d 5f }
$sequence_1 = { 44894648 49c1e003 488d5108 e8???????? 8b4648 85c0 }
$sequence_2 = { c3 4489d6 83e603 4929f3 4e8d0cd9 4a8d04da 4529da }
$sequence_3 = { 4889ce b920000000 e8???????? 4889c7 0f57c0 }
$sequence_4 = { 4989d6 4889ce 498b4808 4885c9 740d e8???????? 48c7470800000000 }
$sequence_5 = { 4585d2 0f84b9000000 418d42ff 4c8d5801 4983fb04 7222 }
$sequence_6 = { 89ce c1ee1d c1e103 09ce }
$sequence_7 = { 4989c9 4889d0 458d5aff 41f6c203 7427 4489d1 83e103 }
$sequence_8 = { 7567 8b542450 33c9 ff15???????? 488bf8 }
$sequence_9 = { 00c2 488b8568020000 8854080c 488b85b0020000 }
$sequence_10 = { 0fb78316010000 c1e208 0bd1 0fb6c8 }
$sequence_11 = { 052797fa04 351337a665 8945f4 488b4510 }
$sequence_12 = { 01c3 69cbe8030000 81c130750000 4883ec20 }
$sequence_13 = { 0552f0384d 358e257f87 894530 488b4570 }
$sequence_14 = { 4885c0 7405 493bc0 7538 0f31 48c1e220 488d0db130ffff }
$sequence_15 = { c7858c000000bf00d200 0f108580000000 c78590000000f0000000 8b8590000000 }
$sequence_16 = { ffc0 4881c200010000 413bc0 72ed eb1b }
$sequence_17 = { 8bf0 85c0 792e 4c8d442470 }
$sequence_18 = { 05f226dac9 35bcfe1eea 894534 488b4550 }
$sequence_19 = { 01c1 89ca c1ea1f c1f904 }
$sequence_20 = { 01d1 89ca c1e205 89cb }
$sequence_21 = { 48897c2448 448bc5 89442440 498bd6 }
$sequence_22 = { 00c1 488b8568020000 488b95b0020000 884c100c }
$sequence_23 = { 4983f90f 72bf 66895df5 c745f701000000 488bcb 0fb7440dd7 6689440d17 }
condition:
7 of them and filesize < 1115136
}
Strings (24 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ff15???????? 89f0 4883c420 5b 5d 5f } | |
| $sequence_1 | hex | { 44894648 49c1e003 488d5108 e8???????? 8b4648 85c0 } | |
| $sequence_2 | hex | { c3 4489d6 83e603 4929f3 4e8d0cd9 4a8d04da 4529da } | |
| $sequence_3 | hex | { 4889ce b920000000 e8???????? 4889c7 0f57c0 } | |
| $sequence_4 | hex | { 4989d6 4889ce 498b4808 4885c9 740d e8???????? 48c7470800000000 } | |
| $sequence_5 | hex | { 4585d2 0f84b9000000 418d42ff 4c8d5801 4983fb04 7222 } | |
| $sequence_6 | hex | { 89ce c1ee1d c1e103 09ce } | |
| $sequence_7 | hex | { 4989c9 4889d0 458d5aff 41f6c203 7427 4489d1 83e103 } | |
| $sequence_8 | hex | { 7567 8b542450 33c9 ff15???????? 488bf8 } | |
| $sequence_9 | hex | { 00c2 488b8568020000 8854080c 488b85b0020000 } | |
| $sequence_10 | hex | { 0fb78316010000 c1e208 0bd1 0fb6c8 } | |
| $sequence_11 | hex | { 052797fa04 351337a665 8945f4 488b4510 } | |
| $sequence_12 | hex | { 01c3 69cbe8030000 81c130750000 4883ec20 } | |
| $sequence_13 | hex | { 0552f0384d 358e257f87 894530 488b4570 } | |
| $sequence_14 | hex | { 4885c0 7405 493bc0 7538 0f31 48c1e220 488d0db130ffff } | |
| $sequence_15 | hex | { c7858c000000bf00d200 0f108580000000 c78590000000f0000000 8b8590000000 } | |
| $sequence_16 | hex | { ffc0 4881c200010000 413bc0 72ed eb1b } | |
| $sequence_17 | hex | { 8bf0 85c0 792e 4c8d442470 } | |
| $sequence_18 | hex | { 05f226dac9 35bcfe1eea 894534 488b4550 } | |
| $sequence_19 | hex | { 01c1 89ca c1ea1f c1f904 } | |
| $sequence_20 | hex | { 01d1 89ca c1e205 89cb } | |
| $sequence_21 | hex | { 48897c2448 448bc5 89442440 498bd6 } | |
| $sequence_22 | hex | { 00c1 488b8568020000 488b95b0020000 884c100c } | |
| $sequence_23 | hex | { 4983f90f 72bf 66895df5 c745f701000000 488bcb 0fb7440dd7 6689440d17 } |
Condition
7 of them and filesize < 1115136In plain words (Heuristic)
- The file must be smaller than 1115136 (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: 03561f3b-0abe-57dc-b978-3c939c0fe915
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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