YARA · Malpedia signator rules
MALPEDIA_Win_Ssload_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: Ssload.
It defines 19 patterns (0 text, 19 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-ssload-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Ssload_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "6a7f874c-6610-5162-ba91-1cc1181f5dd9"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.ssload"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.ssload_auto.yar#L1-L183"
= "N/A"
= "ad4eafdd7db8d5909c1f0b5f12cdb3737a7d865694dd047c95a4d7271fb85450"
= 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 = { f7e1 c1ea03 8d0492 8d0442 }
$sequence_1 = { 01de 89770c e9???????? 8b770c }
$sequence_2 = { 85f6 b8ffffffff 0f48f8 81ff01020000 }
$sequence_3 = { 894dd4 51 8945e0 ff10 83c404 }
$sequence_4 = { c745d002000000 648b0d00000000 894de8 64a300000000 }
$sequence_5 = { 8d442408 89e1 ba???????? 68???????? 50 e8???????? }
$sequence_6 = { 8d4ddc a1???????? 6a00 6a00 68000000c0 }
$sequence_7 = { 83ec0c 8db53cffffff 8baeb0000000 8b4608 }
$sequence_8 = { 89d5 57 53 52 e8???????? }
$sequence_9 = { 8b4f18 0f94c0 83c802 50 }
$sequence_10 = { 55 83ec10 83c50c 837dd800 }
$sequence_11 = { 034214 50 8b4df8 51 e8???????? }
$sequence_12 = { 034228 8945c4 6a00 6a01 6800000010 }
$sequence_13 = { 0345e8 2b45d4 8945dc e9???????? }
$sequence_14 = { 034828 8b55fc 894a2c eb0a }
$sequence_15 = { 034a10 894de0 8b45e0 3b45dc 7606 8b4de0 894ddc }
$sequence_16 = { ffd1 83c408 ebbc 8b55fc 8b4208 50 e8???????? }
$sequence_17 = { 03420c 50 ff15???????? 8945f8 837df800 }
$sequence_18 = { 034110 50 8b550c 52 8b4de8 e8???????? }
condition:
7 of them and filesize < 4950016
}
Strings (19 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { f7e1 c1ea03 8d0492 8d0442 } | |
| $sequence_1 | hex | { 01de 89770c e9???????? 8b770c } | |
| $sequence_2 | hex | { 85f6 b8ffffffff 0f48f8 81ff01020000 } | |
| $sequence_3 | hex | { 894dd4 51 8945e0 ff10 83c404 } | |
| $sequence_4 | hex | { c745d002000000 648b0d00000000 894de8 64a300000000 } | |
| $sequence_5 | hex | { 8d442408 89e1 ba???????? 68???????? 50 e8???????? } | |
| $sequence_6 | hex | { 8d4ddc a1???????? 6a00 6a00 68000000c0 } | |
| $sequence_7 | hex | { 83ec0c 8db53cffffff 8baeb0000000 8b4608 } | |
| $sequence_8 | hex | { 89d5 57 53 52 e8???????? } | |
| $sequence_9 | hex | { 8b4f18 0f94c0 83c802 50 } | |
| $sequence_10 | hex | { 55 83ec10 83c50c 837dd800 } | |
| $sequence_11 | hex | { 034214 50 8b4df8 51 e8???????? } | |
| $sequence_12 | hex | { 034228 8945c4 6a00 6a01 6800000010 } | |
| $sequence_13 | hex | { 0345e8 2b45d4 8945dc e9???????? } | |
| $sequence_14 | hex | { 034828 8b55fc 894a2c eb0a } | |
| $sequence_15 | hex | { 034a10 894de0 8b45e0 3b45dc 7606 8b4de0 894ddc } | |
| $sequence_16 | hex | { ffd1 83c408 ebbc 8b55fc 8b4208 50 e8???????? } | |
| $sequence_17 | hex | { 03420c 50 ff15???????? 8945f8 837df800 } | |
| $sequence_18 | hex | { 034110 50 8b550c 52 8b4de8 e8???????? } |
Condition
7 of them and filesize < 4950016In plain words (Heuristic)
- The file must be smaller than 4950016 (a cheap guard that skips large files).
- At least 7 patterns in the rule must match.
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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: 6a7f874c-6610-5162-ba91-1cc1181f5dd9
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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