YARA · Malpedia signator rules
MALPEDIA_Win_Minibrowse_Auto
autogenerated rule brought to you by yara-signator
MalwareMinibrowseMalpedia 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: Minibrowse.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-minibrowse-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Minibrowse_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "9f6650b8-5239-5032-886e-aed87970db71"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.minibrowse"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.minibrowse_auto.yar#L1-L133"
= "N/A"
= "431afaa525f2fb5fee467730f29c5866714cce8b22c1963aa09f9eeafdd7fb92"
= 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 = { 488b4010 488b0c24 488b09 48ba519faa8c11c54d25 4801d0 4829c8 48b9519faa8c11c54d25 }
$sequence_1 = { 4c63c8 428a140a 88542407 41b91d000000 31d2 41f7f1 8b442410 }
$sequence_2 = { 48b8285a895ec1288634 49034338 4c89542420 ffd0 488b4c2478 48bae4ae95c06d509bd8 }
$sequence_3 = { f7f1 89c1 83e928 48b81ca6e955db0a66e9 480305???????? 8908 48b81ca6e955db0a66e9 }
$sequence_4 = { 48b84933c445a4f5a43d 480305???????? 8b00 8945ac 4189c0 4183e01f 4183c801 }
$sequence_5 = { 488b842488000000 4889442438 488b4c2460 48ba43826c17761a1b3b 480315???????? 48b8e2603ff4395df8be 48034230 }
$sequence_6 = { 488b4c2438 49b887c7de1b22f1b6a7 4c0305???????? 48b8584182a86aca4fb4 490300 ffd0 488b542428 }
$sequence_7 = { f7f1 89c1 83e92f 48b894f60aea1b77f0c0 480305???????? 8908 48b894f60aea1b77f0c0 }
$sequence_8 = { 80e101 0fb6c9 01ca 48b90080d46689848625 48030d???????? 8911 a801 }
$sequence_9 = { f7f1 89c1 48b815ac4d524d475ce8 480305???????? 8908 48b815ac4d524d475ce8 480305???????? }
condition:
7 of them and filesize < 1779712
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 488b4010 488b0c24 488b09 48ba519faa8c11c54d25 4801d0 4829c8 48b9519faa8c11c54d25 } | |
| $sequence_1 | hex | { 4c63c8 428a140a 88542407 41b91d000000 31d2 41f7f1 8b442410 } | |
| $sequence_2 | hex | { 48b8285a895ec1288634 49034338 4c89542420 ffd0 488b4c2478 48bae4ae95c06d509bd8 } | |
| $sequence_3 | hex | { f7f1 89c1 83e928 48b81ca6e955db0a66e9 480305???????? 8908 48b81ca6e955db0a66e9 } | |
| $sequence_4 | hex | { 48b84933c445a4f5a43d 480305???????? 8b00 8945ac 4189c0 4183e01f 4183c801 } | |
| $sequence_5 | hex | { 488b842488000000 4889442438 488b4c2460 48ba43826c17761a1b3b 480315???????? 48b8e2603ff4395df8be 48034230 } | |
| $sequence_6 | hex | { 488b4c2438 49b887c7de1b22f1b6a7 4c0305???????? 48b8584182a86aca4fb4 490300 ffd0 488b542428 } | |
| $sequence_7 | hex | { f7f1 89c1 83e92f 48b894f60aea1b77f0c0 480305???????? 8908 48b894f60aea1b77f0c0 } | |
| $sequence_8 | hex | { 80e101 0fb6c9 01ca 48b90080d46689848625 48030d???????? 8911 a801 } | |
| $sequence_9 | hex | { f7f1 89c1 48b815ac4d524d475ce8 480305???????? 8908 48b815ac4d524d475ce8 480305???????? } |
Condition
7 of them and filesize < 1779712In plain words (Heuristic)
- The file must be smaller than 1779712 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 9f6650b8-5239-5032-886e-aed87970db71
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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