YARA · Malpedia signator rules
MALPEDIA_Win_Defray_Auto
autogenerated rule brought to you by yara-signator
- 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: Defray.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-defray-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Defray_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "91dbb208-60a5-5e96-a645-56c436179440"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.defray"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.defray_auto.yar#L1-L132"
= "N/A"
= "6b4e097237ff798ba5626d5bee417027ad739d6a04da88a35accdf2c8cd93643"
= 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 = { 8d34ba 3bf0 741b 8bf8 2bf8 57 50 }
$sequence_1 = { 8b4dec ba10000000 8b7df0 8d49ff d3e2 8bcb }
$sequence_2 = { 8bf0 894dfc 2bf2 8d7b1f c1ef05 c1fe02 897d08 }
$sequence_3 = { 85c0 7471 8b45f0 8b4de8 8b048568f34800 f644012880 745d }
$sequence_4 = { 8bc2 8bca 83e03f c1f906 6bc030 03048d68f34800 eb05 }
$sequence_5 = { ab ab ab 66ab 33c0 8dbd74faffff a5 }
$sequence_6 = { 740b 50 ff15???????? 32c0 eb31 e8???????? 3bf0 }
$sequence_7 = { 84c0 750f 8d8d98fbffff e8???????? 84c0 7430 8d8d68f9ffff }
$sequence_8 = { c1ee02 8bfb 8bce 33c0 f3ab 8b75e8 33d2 }
$sequence_9 = { eb07 c6437600 894304 8b8544ffffff 85c0 0f8482000000 }
condition:
7 of them and filesize < 1253376
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 8d34ba 3bf0 741b 8bf8 2bf8 57 50 } | |
| $sequence_1 | hex | { 8b4dec ba10000000 8b7df0 8d49ff d3e2 8bcb } | |
| $sequence_2 | hex | { 8bf0 894dfc 2bf2 8d7b1f c1ef05 c1fe02 897d08 } | |
| $sequence_3 | hex | { 85c0 7471 8b45f0 8b4de8 8b048568f34800 f644012880 745d } | |
| $sequence_4 | hex | { 8bc2 8bca 83e03f c1f906 6bc030 03048d68f34800 eb05 } | |
| $sequence_5 | hex | { ab ab ab 66ab 33c0 8dbd74faffff a5 } | |
| $sequence_6 | hex | { 740b 50 ff15???????? 32c0 eb31 e8???????? 3bf0 } | |
| $sequence_7 | hex | { 84c0 750f 8d8d98fbffff e8???????? 84c0 7430 8d8d68f9ffff } | |
| $sequence_8 | hex | { c1ee02 8bfb 8bce 33c0 f3ab 8b75e8 33d2 } | |
| $sequence_9 | hex | { eb07 c6437600 894304 8b8544ffffff 85c0 0f8482000000 } |
Condition
7 of them and filesize < 1253376In plain words (Heuristic)
- The file must be smaller than 1253376 (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: 91dbb208-60a5-5e96-a645-56c436179440
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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