YARA · Malpedia signator rules
MALPEDIA_Win_Poslurp_Auto
autogenerated rule brought to you by yara-signator
MalwarePoslurpMalpedia 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: Poslurp.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-poslurp-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Poslurp_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "f57f3062-2d48-53bc-84d2-4f47478aeafc"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.poslurp"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.poslurp_auto.yar#L1-L120"
= "N/A"
= "1ce7d286bb932144dd320e4741b9f64328e3751d7a5f95794d81a78692d9adcd"
= 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 = { 4156 4157 4883ec60 448bf2 4c8bf9 4c8be1 }
$sequence_1 = { 488bc8 482bcd 48d1f9 83c1dc 83f93c }
$sequence_2 = { 740e 0fb7d0 488bcd 41ffd5 488907 eb0e }
$sequence_3 = { 498bf7 4c8be8 488bf8 33c0 f3aa 8bcd 498bfd }
$sequence_4 = { 83f809 7709 ffc7 48ffc2 }
$sequence_5 = { 48ffc2 32c1 8842ff 69c90d661900 81e96b1ef949 }
$sequence_6 = { ff15???????? 4c8d4c2458 448bc5 488bd6 }
$sequence_7 = { 488bfe 458bc4 498bd4 66f2af 4c8d2d45220000 48f7d1 4883e901 }
$sequence_8 = { 418bc8 ffce 488bd5 2bcd 8bfb }
$sequence_9 = { 57 4883ec20 48833d????????00 488bd9 751f 488b0d???????? ba08000000 }
condition:
7 of them and filesize < 50176
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 4156 4157 4883ec60 448bf2 4c8bf9 4c8be1 } | |
| $sequence_1 | hex | { 488bc8 482bcd 48d1f9 83c1dc 83f93c } | |
| $sequence_2 | hex | { 740e 0fb7d0 488bcd 41ffd5 488907 eb0e } | |
| $sequence_3 | hex | { 498bf7 4c8be8 488bf8 33c0 f3aa 8bcd 498bfd } | |
| $sequence_4 | hex | { 83f809 7709 ffc7 48ffc2 } | |
| $sequence_5 | hex | { 48ffc2 32c1 8842ff 69c90d661900 81e96b1ef949 } | |
| $sequence_6 | hex | { ff15???????? 4c8d4c2458 448bc5 488bd6 } | |
| $sequence_7 | hex | { 488bfe 458bc4 498bd4 66f2af 4c8d2d45220000 48f7d1 4883e901 } | |
| $sequence_8 | hex | { 418bc8 ffce 488bd5 2bcd 8bfb } | |
| $sequence_9 | hex | { 57 4883ec20 48833d????????00 488bd9 751f 488b0d???????? ba08000000 } |
Condition
7 of them and filesize < 50176In plain words (Heuristic)
- The file must be smaller than 50176 (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: f57f3062-2d48-53bc-84d2-4f47478aeafc
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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