YARA · Malpedia signator rules
MALPEDIA_Win_Campoloader_Auto
autogenerated rule brought to you by yara-signator
MalwareCampoloaderMalpedia 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: Campoloader.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-campoloader-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Campoloader_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "32f0f399-0148-51c4-a233-851dc8524a13"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.campoloader"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.campoloader_auto.yar#L1-L116"
= "N/A"
= "46a55bcdc1760abb366b189bb121145e4e0e7a203cd7dc6e102cc6324749a939"
= 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 = { 898d7cefffff 8b957cefffff 83c201 89954cefffff 8b857cefffff }
$sequence_1 = { 8d8d30f1ffff 51 e8???????? 83c404 89856cefffff }
$sequence_2 = { 8b510c 8b0410 8b08 898d24f1ffff 6a10 }
$sequence_3 = { 83c40c 8d8d54efffff 51 8d95ecfdffff 52 8d85f0feffff }
$sequence_4 = { 83c001 898560efffff 8b8d80efffff 8a11 88958befffff 838580efffff01 }
$sequence_5 = { c745f8ffffffff 8b45e8 50 8b4d08 51 }
$sequence_6 = { 83c418 8d8d90efffff 51 6802010000 }
$sequence_7 = { 52 ff15???????? a3???????? 68???????? 8b45f8 }
$sequence_8 = { 8945fc a1???????? 8945f4 8a0d???????? 884df8 }
$sequence_9 = { 51 e8???????? 83c410 8d55f4 899580efffff 8b8580efffff }
condition:
7 of them and filesize < 66560
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 898d7cefffff 8b957cefffff 83c201 89954cefffff 8b857cefffff } | |
| $sequence_1 | hex | { 8d8d30f1ffff 51 e8???????? 83c404 89856cefffff } | |
| $sequence_2 | hex | { 8b510c 8b0410 8b08 898d24f1ffff 6a10 } | |
| $sequence_3 | hex | { 83c40c 8d8d54efffff 51 8d95ecfdffff 52 8d85f0feffff } | |
| $sequence_4 | hex | { 83c001 898560efffff 8b8d80efffff 8a11 88958befffff 838580efffff01 } | |
| $sequence_5 | hex | { c745f8ffffffff 8b45e8 50 8b4d08 51 } | |
| $sequence_6 | hex | { 83c418 8d8d90efffff 51 6802010000 } | |
| $sequence_7 | hex | { 52 ff15???????? a3???????? 68???????? 8b45f8 } | |
| $sequence_8 | hex | { 8945fc a1???????? 8945f4 8a0d???????? 884df8 } | |
| $sequence_9 | hex | { 51 e8???????? 83c410 8d55f4 899580efffff 8b8580efffff } |
Condition
7 of them and filesize < 66560In plain words (Heuristic)
- The file must be smaller than 66560 (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: 32f0f399-0148-51c4-a233-851dc8524a13
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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