YARA · Malpedia signator rules
MALPEDIA_Win_Ghost_Rat_Auto
autogenerated rule brought to you by yara-signator
MalwareGhost RatMalpedia 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: Ghost Rat.
It defines 34 patterns (0 text, 34 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-ghost-rat-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ghost_Rat_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "b3c0a496-a8e9-5e0a-81fc-8cfef4071d10"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.ghost_rat"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ghost_rat_auto.yar#L1-L315"
= "N/A"
= "f6cde1e9a7a7c4d78a246882e7f130237b23653d10843e75f08c553708ae3734"
= 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 = { 6a01 56 ff15???????? 5e c20800 }
$sequence_1 = { 8b400c 85c0 7505 a1???????? 50 8bce }
$sequence_2 = { 8bd9 e8???????? 8b4d08 3bc8 }
$sequence_3 = { 8be5 5d c20400 894df4 c745f800000000 }
$sequence_4 = { c745f800000000 df6df4 83ec08 dc0d???????? dd1c24 ff15???????? 83c408 }
$sequence_5 = { 6a6b 8bce e8???????? 5f 5e }
$sequence_6 = { ff7628 ff15???????? 6a01 ff7620 ff15???????? 8b4e04 }
$sequence_7 = { 6a00 6a00 c705????????20010000 e8???????? }
$sequence_8 = { b302 50 51 c744242003000000 c744242400000000 }
$sequence_9 = { e9???????? 8b4df0 83c154 e9???????? 8b4df0 83c17c e9???????? }
$sequence_10 = { ff15???????? 85c0 7507 c745e401000000 834dfcff }
$sequence_11 = { 68???????? 50 6802000080 e8???????? 83c41c 5f 5e }
$sequence_12 = { 50 e8???????? 83c40c ff7508 6a40 ff15???????? }
$sequence_13 = { 6a6f 8bce e8???????? 5e }
$sequence_14 = { 6a00 52 ff15???????? 8b462c 68d0070000 }
$sequence_15 = { e8???????? 8b8e549f0000 83c41c 89848e14030000 8b86549f0000 }
$sequence_16 = { 8dbd85feffff f3ab 66ab aa }
$sequence_17 = { ff7508 ff15???????? 40 50 ff15???????? }
$sequence_18 = { ff15???????? 85c0 7506 46 83fe19 }
$sequence_19 = { 6a00 e8???????? 8b96549f0000 83c41c 89849614030000 }
$sequence_20 = { ff7620 ff15???????? 8b4e04 e8???????? 33c0 5e }
$sequence_21 = { e8???????? 8d85c0feffff 50 57 ff15???????? 8bf8 83ffff }
$sequence_22 = { 8bce ff75e8 e8???????? 8bce e8???????? 6a00 }
$sequence_23 = { 6a00 6a00 e8???????? 8b8e549f0000 }
$sequence_24 = { e9???????? 8d45dc 50 681f000200 }
$sequence_25 = { 6a00 6a00 6838040000 6a00 }
$sequence_26 = { 83e9fc c7014c696272 83e9fc c70161727941 }
$sequence_27 = { 813f6b006500 7406 813f4b004500 75e8 }
$sequence_28 = { 8b4608 8b7e20 8b36 813f6b006500 7406 }
$sequence_29 = { 83ec14 8b4508 8b4d10 2b481c 894df8 8b5508 }
$sequence_30 = { 8b9558ffffff 52 8b8560ffffff 50 ff9514ffffff 83c40c }
$sequence_31 = { 7522 60 8b75dc 8b5e24 035df8 8b761c 0375f8 }
$sequence_32 = { 85c0 7530 8b8d48ffffff 8b9560ffffff 03511c 8995f0feffff 8b8554ffffff }
$sequence_33 = { 75d4 817f0865006c00 7407 817f0845004c00 }
condition:
7 of them and filesize < 357376
}
Strings (34 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 6a01 56 ff15???????? 5e c20800 } | |
| $sequence_1 | hex | { 8b400c 85c0 7505 a1???????? 50 8bce } | |
| $sequence_2 | hex | { 8bd9 e8???????? 8b4d08 3bc8 } | |
| $sequence_3 | hex | { 8be5 5d c20400 894df4 c745f800000000 } | |
| $sequence_4 | hex | { c745f800000000 df6df4 83ec08 dc0d???????? dd1c24 ff15???????? 83c408 } | |
| $sequence_5 | hex | { 6a6b 8bce e8???????? 5f 5e } | |
| $sequence_6 | hex | { ff7628 ff15???????? 6a01 ff7620 ff15???????? 8b4e04 } | |
| $sequence_7 | hex | { 6a00 6a00 c705????????20010000 e8???????? } | |
| $sequence_8 | hex | { b302 50 51 c744242003000000 c744242400000000 } | |
| $sequence_9 | hex | { e9???????? 8b4df0 83c154 e9???????? 8b4df0 83c17c e9???????? } | |
| $sequence_10 | hex | { ff15???????? 85c0 7507 c745e401000000 834dfcff } | |
| $sequence_11 | hex | { 68???????? 50 6802000080 e8???????? 83c41c 5f 5e } | |
| $sequence_12 | hex | { 50 e8???????? 83c40c ff7508 6a40 ff15???????? } | |
| $sequence_13 | hex | { 6a6f 8bce e8???????? 5e } | |
| $sequence_14 | hex | { 6a00 52 ff15???????? 8b462c 68d0070000 } | |
| $sequence_15 | hex | { e8???????? 8b8e549f0000 83c41c 89848e14030000 8b86549f0000 } | |
| $sequence_16 | hex | { 8dbd85feffff f3ab 66ab aa } | |
| $sequence_17 | hex | { ff7508 ff15???????? 40 50 ff15???????? } | |
| $sequence_18 | hex | { ff15???????? 85c0 7506 46 83fe19 } | |
| $sequence_19 | hex | { 6a00 e8???????? 8b96549f0000 83c41c 89849614030000 } | |
| $sequence_20 | hex | { ff7620 ff15???????? 8b4e04 e8???????? 33c0 5e } | |
| $sequence_21 | hex | { e8???????? 8d85c0feffff 50 57 ff15???????? 8bf8 83ffff } | |
| $sequence_22 | hex | { 8bce ff75e8 e8???????? 8bce e8???????? 6a00 } | |
| $sequence_23 | hex | { 6a00 6a00 e8???????? 8b8e549f0000 } | |
| $sequence_24 | hex | { e9???????? 8d45dc 50 681f000200 } | |
| $sequence_25 | hex | { 6a00 6a00 6838040000 6a00 } | |
| $sequence_26 | hex | { 83e9fc c7014c696272 83e9fc c70161727941 } | |
| $sequence_27 | hex | { 813f6b006500 7406 813f4b004500 75e8 } | |
| $sequence_28 | hex | { 8b4608 8b7e20 8b36 813f6b006500 7406 } | |
| $sequence_29 | hex | { 83ec14 8b4508 8b4d10 2b481c 894df8 8b5508 } | |
| $sequence_30 | hex | { 8b9558ffffff 52 8b8560ffffff 50 ff9514ffffff 83c40c } | |
| $sequence_31 | hex | { 7522 60 8b75dc 8b5e24 035df8 8b761c 0375f8 } | |
| $sequence_32 | hex | { 85c0 7530 8b8d48ffffff 8b9560ffffff 03511c 8995f0feffff 8b8554ffffff } | |
| $sequence_33 | hex | { 75d4 817f0865006c00 7407 817f0845004c00 } |
Condition
7 of them and filesize < 357376In plain words (Heuristic)
- The file must be smaller than 357376 (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: b3c0a496-a8e9-5e0a-81fc-8cfef4071d10
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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