YARA · Malpedia signator rules
MALPEDIA_Win_Krbanker_Auto
autogenerated rule brought to you by yara-signator
MalwareKrbankerMalpedia 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: Krbanker.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-krbanker-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Krbanker_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "3510fffa-0173-5cd5-afc6-be6b1c6982fb"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.krbanker"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.krbanker_auto.yar#L1-L122"
= "N/A"
= "1a834be2227ecc2b12fc4935d053b1aeae77b26c9f0258726b1be0d0e7462f84"
= 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 = { 23d0 8954244c eb08 c744244cffffffff 8d4c2424 }
$sequence_1 = { 894504 8b5108 895508 8b410c }
$sequence_2 = { 6874000000 6801000000 bb40010000 e8???????? 83c410 8945d0 6801010080 }
$sequence_3 = { 53 57 e8???????? 8bf0 83c40c 83feff 0f848f000000 }
$sequence_4 = { 7412 6802000000 e8???????? 83c404 d945d8 eb06 8955dc }
$sequence_5 = { c3 8b4c2420 8b542404 8d442408 50 51 }
$sequence_6 = { 83c410 8945e4 6801010080 6a00 6841000000 6801000000 bb40010000 }
$sequence_7 = { 894de8 8b4de8 8b55e4 8b45e0 }
$sequence_8 = { 6803000000 bb9c010000 e8???????? 83c428 8945ec }
$sequence_9 = { 57 8902 8b4104 894204 8b4108 894208 }
condition:
7 of them and filesize < 1826816
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 23d0 8954244c eb08 c744244cffffffff 8d4c2424 } | |
| $sequence_1 | hex | { 894504 8b5108 895508 8b410c } | |
| $sequence_2 | hex | { 6874000000 6801000000 bb40010000 e8???????? 83c410 8945d0 6801010080 } | |
| $sequence_3 | hex | { 53 57 e8???????? 8bf0 83c40c 83feff 0f848f000000 } | |
| $sequence_4 | hex | { 7412 6802000000 e8???????? 83c404 d945d8 eb06 8955dc } | |
| $sequence_5 | hex | { c3 8b4c2420 8b542404 8d442408 50 51 } | |
| $sequence_6 | hex | { 83c410 8945e4 6801010080 6a00 6841000000 6801000000 bb40010000 } | |
| $sequence_7 | hex | { 894de8 8b4de8 8b55e4 8b45e0 } | |
| $sequence_8 | hex | { 6803000000 bb9c010000 e8???????? 83c428 8945ec } | |
| $sequence_9 | hex | { 57 8902 8b4104 894204 8b4108 894208 } |
Condition
7 of them and filesize < 1826816In plain words (Heuristic)
- The file must be smaller than 1826816 (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: 3510fffa-0173-5cd5-afc6-be6b1c6982fb
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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