YARA · Malpedia signator rules
MALPEDIA_Win_Citadel_Auto
autogenerated rule brought to you by yara-signator
MalwareCitadelMalpedia 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: Citadel.
It defines 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-citadel-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Citadel_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "ae8e7236-0008-59d9-b25b-2f4e4ce0fb70"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.citadel"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.citadel_auto.yar#L1-L166"
= "N/A"
= "2ea1755e280357833299c68e03bd91e76adb6bee21b3adff71679409787c95ea"
= 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 = { eb0e 6800800000 53 57 56 ff15???????? }
$sequence_1 = { ff15???????? 85c0 0f8566010000 57 }
$sequence_2 = { 41 66395802 7405 83c002 }
$sequence_3 = { 3d00002003 7715 8b4d08 890e }
$sequence_4 = { 0f8566010000 57 57 57 }
$sequence_5 = { 50 57 e8???????? 33db 3c01 }
$sequence_6 = { 03f7 6a0d 5f e8???????? 59 59 }
$sequence_7 = { 33c9 663918 7507 41 }
$sequence_8 = { 33c0 6689460e 0fb74606 6685c0 7432 66ff460c }
$sequence_9 = { 8bf8 c745f801000000 85f6 0f842b010000 837e1000 0f8421010000 807e1400 }
$sequence_10 = { 0f8525ffffff 5b b001 eb30 d0e8 }
$sequence_11 = { 0f8421010000 807e1400 0f8417010000 85ff 0f84dd000000 53 837df800 }
$sequence_12 = { 7432 66ff460e 6639460e 7228 8b4610 8a4e09 }
$sequence_13 = { eb30 d0e8 3ac3 73fa }
$sequence_14 = { 85c0 7409 3255fd 8a0f ffd0 8807 }
$sequence_15 = { 7404 84d2 7575 33c0 85c0 740b }
condition:
7 of them and filesize < 1236992
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { eb0e 6800800000 53 57 56 ff15???????? } | |
| $sequence_1 | hex | { ff15???????? 85c0 0f8566010000 57 } | |
| $sequence_2 | hex | { 41 66395802 7405 83c002 } | |
| $sequence_3 | hex | { 3d00002003 7715 8b4d08 890e } | |
| $sequence_4 | hex | { 0f8566010000 57 57 57 } | |
| $sequence_5 | hex | { 50 57 e8???????? 33db 3c01 } | |
| $sequence_6 | hex | { 03f7 6a0d 5f e8???????? 59 59 } | |
| $sequence_7 | hex | { 33c9 663918 7507 41 } | |
| $sequence_8 | hex | { 33c0 6689460e 0fb74606 6685c0 7432 66ff460c } | |
| $sequence_9 | hex | { 8bf8 c745f801000000 85f6 0f842b010000 837e1000 0f8421010000 807e1400 } | |
| $sequence_10 | hex | { 0f8525ffffff 5b b001 eb30 d0e8 } | |
| $sequence_11 | hex | { 0f8421010000 807e1400 0f8417010000 85ff 0f84dd000000 53 837df800 } | |
| $sequence_12 | hex | { 7432 66ff460e 6639460e 7228 8b4610 8a4e09 } | |
| $sequence_13 | hex | { eb30 d0e8 3ac3 73fa } | |
| $sequence_14 | hex | { 85c0 7409 3255fd 8a0f ffd0 8807 } | |
| $sequence_15 | hex | { 7404 84d2 7575 33c0 85c0 740b } |
Condition
7 of them and filesize < 1236992In plain words (Heuristic)
- The file must be smaller than 1236992 (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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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: ae8e7236-0008-59d9-b25b-2f4e4ce0fb70
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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