YARA · Malpedia signator rules
MALPEDIA_Win_Screencap_Auto
autogenerated rule brought to you by yara-signator
MalwareScreencapMalpedia 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: Screencap.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-screencap-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Screencap_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "c330655e-8db1-503c-b0f5-bd3d36e3ae9c"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.screencap"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.screencap_auto.yar#L1-L123"
= "N/A"
= "e2fba7936b94145a817d72ed995b006b5ea28dbc59b8ee8eeb93132ef484504e"
= 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 = { b900040000 ff15???????? 488bf8 4885c0 747f 488d4c2452 }
$sequence_1 = { 488bcb 666666660f1f840000000000 0fb68431a8f70000 48ffc1 88440c77 84c0 }
$sequence_2 = { 4533c9 ff5018 85c0 0f88a4000000 488b0d???????? }
$sequence_3 = { ff15???????? 488d0d3e380100 33d2 e8???????? 488d0d30380100 85c0 740c }
$sequence_4 = { e8???????? 482be0 488b05???????? 4833c4 488985a01d0000 ff15???????? 483b05???????? }
$sequence_5 = { e9???????? 488d1560ca0000 e9???????? 488d15eccb0000 e9???????? 488d15d0cb0000 e9???????? }
$sequence_6 = { 8d8424c8000000 6854334700 50 e8???????? ffb424ec220000 8d8424da000000 }
$sequence_7 = { 488b05???????? 4833c4 4889842400010000 488b0d???????? }
$sequence_8 = { 488bd5 8bdf e8???????? 85ff 741c }
$sequence_9 = { 4c8d4308 488d442420 4c2bc0 0fb610 420fb60c00 2bd1 }
condition:
7 of them and filesize < 1391616
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { b900040000 ff15???????? 488bf8 4885c0 747f 488d4c2452 } | |
| $sequence_1 | hex | { 488bcb 666666660f1f840000000000 0fb68431a8f70000 48ffc1 88440c77 84c0 } | |
| $sequence_2 | hex | { 4533c9 ff5018 85c0 0f88a4000000 488b0d???????? } | |
| $sequence_3 | hex | { ff15???????? 488d0d3e380100 33d2 e8???????? 488d0d30380100 85c0 740c } | |
| $sequence_4 | hex | { e8???????? 482be0 488b05???????? 4833c4 488985a01d0000 ff15???????? 483b05???????? } | |
| $sequence_5 | hex | { e9???????? 488d1560ca0000 e9???????? 488d15eccb0000 e9???????? 488d15d0cb0000 e9???????? } | |
| $sequence_6 | hex | { 8d8424c8000000 6854334700 50 e8???????? ffb424ec220000 8d8424da000000 } | |
| $sequence_7 | hex | { 488b05???????? 4833c4 4889842400010000 488b0d???????? } | |
| $sequence_8 | hex | { 488bd5 8bdf e8???????? 85ff 741c } | |
| $sequence_9 | hex | { 4c8d4308 488d442420 4c2bc0 0fb610 420fb60c00 2bd1 } |
Condition
7 of them and filesize < 1391616In plain words (Heuristic)
- The file must be smaller than 1391616 (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: c330655e-8db1-503c-b0f5-bd3d36e3ae9c
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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