YARA · Malpedia signator rules
MALPEDIA_Win_Urlzone_Auto
autogenerated rule brought to you by yara-signator
MalwareUrlzoneMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
- Author
- Felix Bilstein - yara-signator at cocacoding dot com
- Date
- 2026-01-05
- Modified
- 2026-01-06
- Score / Quality
- 75 / 75
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Urlzone.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-urlzone-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Urlzone_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "4dd4d8e5-7756-57be-8ce5-a21c7832bb2c"
= "2026-01-05"
= "2026-01-06"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.urlzone"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.urlzone_auto.yar#L1-L126"
= "N/A"
= "c42481bd862ad161fd4e6a711568aaf0139280c4a77d4d9855a08ac723543c9d"
= 75
= 75
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260105"
= "19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79"
= "20251219"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { 55 8bec 81c4e8fbffff 53 56 57 8b4514 }
$sequence_1 = { 8910 33c0 8943e4 c745fcffffffff eb1f 46 83c340 }
$sequence_2 = { 83fbff 0f8420070000 6a00 53 e8???????? 8945f8 }
$sequence_3 = { 50 e8???????? 6a00 6a00 2df1000000 50 8b06 }
$sequence_4 = { 6a00 56 6a00 6802000001 6a00 53 }
$sequence_5 = { 85c0 7c04 85d2 7d02 33c9 8bc1 c3 }
$sequence_6 = { 50 e8???????? b001 e8???????? 68???????? 68???????? e8???????? }
$sequence_7 = { c6041000 bf01000000 8db36cfeffff 8b06 85c0 7438 }
$sequence_8 = { bb???????? 8b45f8 50 8d8577ffffff 50 }
$sequence_9 = { 7435 e9???????? 56 8d85effdffff }
condition:
7 of them and filesize < 155648
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 55 8bec 81c4e8fbffff 53 56 57 8b4514 } | |
| $sequence_1 | hex | { 8910 33c0 8943e4 c745fcffffffff eb1f 46 83c340 } | |
| $sequence_2 | hex | { 83fbff 0f8420070000 6a00 53 e8???????? 8945f8 } | |
| $sequence_3 | hex | { 50 e8???????? 6a00 6a00 2df1000000 50 8b06 } | |
| $sequence_4 | hex | { 6a00 56 6a00 6802000001 6a00 53 } | |
| $sequence_5 | hex | { 85c0 7c04 85d2 7d02 33c9 8bc1 c3 } | |
| $sequence_6 | hex | { 50 e8???????? b001 e8???????? 68???????? 68???????? e8???????? } | |
| $sequence_7 | hex | { c6041000 bf01000000 8db36cfeffff 8b06 85c0 7438 } | |
| $sequence_8 | hex | { bb???????? 8b45f8 50 8d8577ffffff 50 } | |
| $sequence_9 | hex | { 7435 e9???????? 56 8d85effdffff } |
Condition
7 of them and filesize < 155648In plain words (Heuristic)
- The file must be smaller than 155648 (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: 4dd4d8e5-7756-57be-8ce5-a21c7832bb2c
Metadata
| version | 1 |
|---|---|
| tool | yara-signator v0.6.0 |
| signator_config | callsandjumps;datarefs;binvalue |
| malpedia_rule_date | 20260105 |
| malpedia_hash | 19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79 |
| malpedia_version | 20251219 |
| malpedia_license | CC BY-SA 4.0 |
| malpedia_sharing | TLP:WHITE |
Tags:FILE
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