YARA · Malpedia signator rules
MALPEDIA_Win_Daserf_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: Daserf.
It defines 16 patterns (0 text, 16 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-daserf-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Daserf_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "cc942ddd-6198-516b-83c8-dcf3dfacd02a"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.daserf"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.daserf_auto.yar#L1-L157"
= "N/A"
= "d31e1e550b99f39b2cfdd4c3b670f9eaf5ebe958d543de563b1581bc33fb9241"
= 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 = { 2d7458acf0 81eb4087a1c9 81c324977364 2df0c5683d }
$sequence_1 = { 2d3d9dddda 2d122b9e6e 05a176df80 056a8ceb26 81c3091794b7 81c3477483eb }
$sequence_2 = { f7d2 055764eba6 96 89b42430f4ffff 8bf0 8b842430f4ffff }
$sequence_3 = { ff75e0 8d1b ff75fc 90 }
$sequence_4 = { 0593f8abb9 90 0536f1718f 9b }
$sequence_5 = { 92 89942410f1ffff 8bd0 8b842410f1ffff }
$sequence_6 = { 81eb477bafc6 90 81eb1979d9a8 8bdb 05f1ad59f9 }
$sequence_7 = { 8bc0 8b842400f3ffff 81ebee7d857e 7500 2d444a28fe }
$sequence_8 = { 97 89bc2400f1ffff 8bf8 8b842400f1ffff }
$sequence_9 = { 81c3cfcdd8a3 81eb4769227d 05635637f9 05b537d85e 2dd80e91af }
$sequence_10 = { 05ddf775a4 0583ee701f 2de339226e 81c368780090 81c3f215efea 81eb33a8c4a5 }
$sequence_11 = { 8b842420f4ffff 53 8bdb 53 }
$sequence_12 = { 056213cf4c 2d025bcd54 81eb4f4edeb1 055b9204af 05be0a5f12 058a52e815 }
$sequence_13 = { 81eb8f465a28 05d4ec048f 05ace3258a 2d8c7110f6 }
$sequence_14 = { 2dd1ab761c 81eb0752c899 81eb5e2deea0 056e62ed8e }
$sequence_15 = { 2d99ba6fa8 2d7df1f9f5 81c32b692a0c 81eb4ce843f8 }
condition:
7 of them and filesize < 245760
}
Strings (16 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 2d7458acf0 81eb4087a1c9 81c324977364 2df0c5683d } | |
| $sequence_1 | hex | { 2d3d9dddda 2d122b9e6e 05a176df80 056a8ceb26 81c3091794b7 81c3477483eb } | |
| $sequence_2 | hex | { f7d2 055764eba6 96 89b42430f4ffff 8bf0 8b842430f4ffff } | |
| $sequence_3 | hex | { ff75e0 8d1b ff75fc 90 } | |
| $sequence_4 | hex | { 0593f8abb9 90 0536f1718f 9b } | |
| $sequence_5 | hex | { 92 89942410f1ffff 8bd0 8b842410f1ffff } | |
| $sequence_6 | hex | { 81eb477bafc6 90 81eb1979d9a8 8bdb 05f1ad59f9 } | |
| $sequence_7 | hex | { 8bc0 8b842400f3ffff 81ebee7d857e 7500 2d444a28fe } | |
| $sequence_8 | hex | { 97 89bc2400f1ffff 8bf8 8b842400f1ffff } | |
| $sequence_9 | hex | { 81c3cfcdd8a3 81eb4769227d 05635637f9 05b537d85e 2dd80e91af } | |
| $sequence_10 | hex | { 05ddf775a4 0583ee701f 2de339226e 81c368780090 81c3f215efea 81eb33a8c4a5 } | |
| $sequence_11 | hex | { 8b842420f4ffff 53 8bdb 53 } | |
| $sequence_12 | hex | { 056213cf4c 2d025bcd54 81eb4f4edeb1 055b9204af 05be0a5f12 058a52e815 } | |
| $sequence_13 | hex | { 81eb8f465a28 05d4ec048f 05ace3258a 2d8c7110f6 } | |
| $sequence_14 | hex | { 2dd1ab761c 81eb0752c899 81eb5e2deea0 056e62ed8e } | |
| $sequence_15 | hex | { 2d99ba6fa8 2d7df1f9f5 81c32b692a0c 81eb4ce843f8 } |
Condition
7 of them and filesize < 245760In plain words (Heuristic)
- The file must be smaller than 245760 (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: cc942ddd-6198-516b-83c8-dcf3dfacd02a
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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