YARA · Malpedia signator rules
MALPEDIA_Win_Xbot_Pos_Auto
autogenerated rule brought to you by yara-signator
MalwareXbot PosMalpedia 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: Xbot Pos.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-xbot-pos-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Xbot_Pos_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "58cb2f91-1102-5908-a6e2-fe98a17e22ae"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.xbot_pos"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.xbot_pos_auto.yar#L1-L124"
= "N/A"
= "ec373b97e40b3a7bb938649541ea98b350494940cf5081f6a9f461b68b77d517"
= 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 = { 83c40c e9???????? 8b4514 3b4508 7753 8b45ec 50 }
$sequence_1 = { 833800 7621 8b4dec e8???????? 8985e8feffff 8b85e8feffff 8b08 }
$sequence_2 = { 8b8518f1ffff 898514f1ffff c645fc0f 8b8d14f1ffff 51 8d9554f1ffff }
$sequence_3 = { 8b0c8de0465600 89443120 89543124 e9???????? }
$sequence_4 = { 89951cf1ffff c645fc0e 8b851cf1ffff 50 8d8db4fbffff 51 8d9578f1ffff }
$sequence_5 = { 000f 50 4c 001c50 4c 0029 }
$sequence_6 = { 837dec00 7418 8b45ec 8985a8feffff 8b8da8feffff 51 }
$sequence_7 = { 83ca01 899558feffff c645fc00 8d4db0 e8???????? }
$sequence_8 = { 83c41c 83ec0c 8bcc 89a5c0feffff 8d45d8 50 }
$sequence_9 = { c745f030b65300 8b4df0 51 8d55e0 52 8d4de8 }
condition:
7 of them and filesize < 3031040
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 83c40c e9???????? 8b4514 3b4508 7753 8b45ec 50 } | |
| $sequence_1 | hex | { 833800 7621 8b4dec e8???????? 8985e8feffff 8b85e8feffff 8b08 } | |
| $sequence_2 | hex | { 8b8518f1ffff 898514f1ffff c645fc0f 8b8d14f1ffff 51 8d9554f1ffff } | |
| $sequence_3 | hex | { 8b0c8de0465600 89443120 89543124 e9???????? } | |
| $sequence_4 | hex | { 89951cf1ffff c645fc0e 8b851cf1ffff 50 8d8db4fbffff 51 8d9578f1ffff } | |
| $sequence_5 | hex | { 000f 50 4c 001c50 4c 0029 } | |
| $sequence_6 | hex | { 837dec00 7418 8b45ec 8985a8feffff 8b8da8feffff 51 } | |
| $sequence_7 | hex | { 83ca01 899558feffff c645fc00 8d4db0 e8???????? } | |
| $sequence_8 | hex | { 83c41c 83ec0c 8bcc 89a5c0feffff 8d45d8 50 } | |
| $sequence_9 | hex | { c745f030b65300 8b4df0 51 8d55e0 52 8d4de8 } |
Condition
7 of them and filesize < 3031040In plain words (Heuristic)
- The file must be smaller than 3031040 (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: 58cb2f91-1102-5908-a6e2-fe98a17e22ae
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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