YARA · Malpedia signator rules
MALPEDIA_Win_Razr_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: Razr.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-razr-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Razr_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "ba31ce6c-e3fa-5c6f-83e7-b9b03e941205"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.razr"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.razr_auto.yar#L1-L121"
= "N/A"
= "cb885b6a0f0cc8a44331e3c7b54660df8411ce8c119c824ce6753c4063939250"
= 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 = { ffd0 85c0 740c 488b85c8000000 }
$sequence_1 = { 41b801000000 ba00000080 4889c1 488b05???????? ffd0 }
$sequence_2 = { 750a b800000000 e9???????? c785bc00000000000000 eb70 }
$sequence_3 = { eb04 90 eb01 90 4881c440010000 }
$sequence_4 = { 48895588 48b84748494a4b4c4d4e 48ba4f50515253545556 48894590 48895598 48b85455565758595a00 }
$sequence_5 = { 48898dd0000000 488d057b9b0000 4889c1 e8???????? }
$sequence_6 = { 8955fc 4863d0 488b4510 4801d0 c6002d 8345f801 837df820 }
$sequence_7 = { 488d055dd00400 4889c1 488b05???????? ffd0 b800000000 4883c430 5d }
$sequence_8 = { 4881c430010000 5d c3 55 4889e5 4883ec40 c745fc00000000 }
$sequence_9 = { e8???????? 488d95d0010000 488d85c0000000 4889c1 488b05???????? ffd0 48898520030000 }
condition:
7 of them and filesize < 1626112
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ffd0 85c0 740c 488b85c8000000 } | |
| $sequence_1 | hex | { 41b801000000 ba00000080 4889c1 488b05???????? ffd0 } | |
| $sequence_2 | hex | { 750a b800000000 e9???????? c785bc00000000000000 eb70 } | |
| $sequence_3 | hex | { eb04 90 eb01 90 4881c440010000 } | |
| $sequence_4 | hex | { 48895588 48b84748494a4b4c4d4e 48ba4f50515253545556 48894590 48895598 48b85455565758595a00 } | |
| $sequence_5 | hex | { 48898dd0000000 488d057b9b0000 4889c1 e8???????? } | |
| $sequence_6 | hex | { 8955fc 4863d0 488b4510 4801d0 c6002d 8345f801 837df820 } | |
| $sequence_7 | hex | { 488d055dd00400 4889c1 488b05???????? ffd0 b800000000 4883c430 5d } | |
| $sequence_8 | hex | { 4881c430010000 5d c3 55 4889e5 4883ec40 c745fc00000000 } | |
| $sequence_9 | hex | { e8???????? 488d95d0010000 488d85c0000000 4889c1 488b05???????? ffd0 48898520030000 } |
Condition
7 of them and filesize < 1626112In plain words (Heuristic)
- The file must be smaller than 1626112 (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: ba31ce6c-e3fa-5c6f-83e7-b9b03e941205
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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