YARA · Malpedia signator rules
MALPEDIA_Win_Zlob_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: Zlob.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-zlob-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Zlob_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "1b045870-3579-5b37-8649-8502496e8dd8"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.zlob"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.zlob_auto.yar#L1-L131"
= "N/A"
= "53c3fe91e6079d14e63606f225d38c0173ddfe4ceefd38ebdb6c4dc75eee82af"
= 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 = { ff15???????? 83c40c ffd3 ffd3 ffd6 ffd7 }
$sequence_1 = { ffd6 ffd6 ffd5 6a10 8d442420 6a00 50 }
$sequence_2 = { ffd6 ffd7 ffd6 ffd6 ffd7 8d85f0feffff 50 }
$sequence_3 = { ffd7 ffd6 ffd6 ffd7 ffb4242c010000 ff15???????? }
$sequence_4 = { eb5b 807c241c00 7408 3b4510 7303 894510 ffd3 }
$sequence_5 = { ffd7 8d45c4 50 ff15???????? 85c0 7511 8d45c4 }
$sequence_6 = { 83c504 8b4500 8bcd ff5018 85c0 0f8ee8000000 }
$sequence_7 = { c68503ffffff30 c68504ffffff66 c68505ffffff38 c68506ffffff2d c68507ffffff39 c68508ffffff34 c68509ffffff34 }
$sequence_8 = { 83c424 6a00 6800000080 6a03 6a00 6a01 68000000c0 }
$sequence_9 = { f645fc20 7504 b001 c9 c3 32c0 c9 }
condition:
7 of them and filesize < 98304
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ff15???????? 83c40c ffd3 ffd3 ffd6 ffd7 } | |
| $sequence_1 | hex | { ffd6 ffd6 ffd5 6a10 8d442420 6a00 50 } | |
| $sequence_2 | hex | { ffd6 ffd7 ffd6 ffd6 ffd7 8d85f0feffff 50 } | |
| $sequence_3 | hex | { ffd7 ffd6 ffd6 ffd7 ffb4242c010000 ff15???????? } | |
| $sequence_4 | hex | { eb5b 807c241c00 7408 3b4510 7303 894510 ffd3 } | |
| $sequence_5 | hex | { ffd7 8d45c4 50 ff15???????? 85c0 7511 8d45c4 } | |
| $sequence_6 | hex | { 83c504 8b4500 8bcd ff5018 85c0 0f8ee8000000 } | |
| $sequence_7 | hex | { c68503ffffff30 c68504ffffff66 c68505ffffff38 c68506ffffff2d c68507ffffff39 c68508ffffff34 c68509ffffff34 } | |
| $sequence_8 | hex | { 83c424 6a00 6800000080 6a03 6a00 6a01 68000000c0 } | |
| $sequence_9 | hex | { f645fc20 7504 b001 c9 c3 32c0 c9 } |
Condition
7 of them and filesize < 98304In plain words (Heuristic)
- The file must be smaller than 98304 (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: 1b045870-3579-5b37-8649-8502496e8dd8
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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