YARA · Malpedia signator rules
MALPEDIA_Win_Xfscashncr_Auto
autogenerated rule brought to you by yara-signator
MalwareXfscashncrMalpedia 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: Xfscashncr.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-xfscashncr-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Xfscashncr_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "67959928-435d-51a8-886a-05d309cc7e34"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.xfscashncr"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.xfscashncr_auto.yar#L1-L133"
= "N/A"
= "38d25d3277d16acd0ae222ce1c741d64603fcf05fcb8a79e50c3cbbc913f0abf"
= 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 = { 89959cfbffff 83bd9cfbffff10 776a 8b859cfbffff 0fb688502c5100 ff248d382c5100 8b95f8fbffff }
$sequence_1 = { 8b450c 50 8b4d08 51 e8???????? 83c410 68b90b0000 }
$sequence_2 = { 898578ffffff 83bd78ffffff00 7526 68???????? 68???????? 6a00 68e9010000 }
$sequence_3 = { e8???????? 59 c3 8d8dc0fdffff e9???????? 8b8d38feffff e9???????? }
$sequence_4 = { 83c408 0fbf4df4 51 8d5510 52 e8???????? 83c408 }
$sequence_5 = { 8b4de4 51 8b55f4 8b4248 50 8b4d08 }
$sequence_6 = { ba01000000 6bd21a 81c2???????? 52 b801000000 6bc000 05???????? }
$sequence_7 = { c745d801000000 c745d400000000 eb12 8b45d4 83c001 8945d4 8b4dd8 }
$sequence_8 = { e8???????? 50 8d85c0fdffff 50 e8???????? 83c408 8985b8fdffff }
$sequence_9 = { 8b4508 c1f805 8b4d08 83e11f c1e106 8b0485c0195700 88540824 }
condition:
7 of them and filesize < 3126272
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 89959cfbffff 83bd9cfbffff10 776a 8b859cfbffff 0fb688502c5100 ff248d382c5100 8b95f8fbffff } | |
| $sequence_1 | hex | { 8b450c 50 8b4d08 51 e8???????? 83c410 68b90b0000 } | |
| $sequence_2 | hex | { 898578ffffff 83bd78ffffff00 7526 68???????? 68???????? 6a00 68e9010000 } | |
| $sequence_3 | hex | { e8???????? 59 c3 8d8dc0fdffff e9???????? 8b8d38feffff e9???????? } | |
| $sequence_4 | hex | { 83c408 0fbf4df4 51 8d5510 52 e8???????? 83c408 } | |
| $sequence_5 | hex | { 8b4de4 51 8b55f4 8b4248 50 8b4d08 } | |
| $sequence_6 | hex | { ba01000000 6bd21a 81c2???????? 52 b801000000 6bc000 05???????? } | |
| $sequence_7 | hex | { c745d801000000 c745d400000000 eb12 8b45d4 83c001 8945d4 8b4dd8 } | |
| $sequence_8 | hex | { e8???????? 50 8d85c0fdffff 50 e8???????? 83c408 8985b8fdffff } | |
| $sequence_9 | hex | { 8b4508 c1f805 8b4d08 83e11f c1e106 8b0485c0195700 88540824 } |
Condition
7 of them and filesize < 3126272In plain words (Heuristic)
- The file must be smaller than 3126272 (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: 67959928-435d-51a8-886a-05d309cc7e34
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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