YARA · Malpedia signator rules
MALPEDIA_Win_Soraya_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 / 73
What this rule detects
autogenerated rule brought to you by yara-signator
Associated malware family: Soraya.
It defines 23 patterns (0 text, 23 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-soraya-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Soraya_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "14bbde5d-15cc-5025-8b24-26e133addab2"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.soraya"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.soraya_auto.yar#L1-L226"
= "N/A"
= "b2e9247a6dd1093d6971a6ef5da72b47d313966f90239a9370fea94dbcd381d2"
= 75
= 73
= "FILE"
= "1"
= "yara-signator v0.6.0"
= "callsandjumps;datarefs;binvalue"
= "20260422"
= "a182e35da64e6d71cb55f125c4d4225196523f14"
= "20260504"
= "CC BY-SA 4.0"
= "TLP:WHITE"
strings:
$sequence_0 = { ff15???????? 8d48bf 80f919 77f2 }
$sequence_1 = { 0301 8b4c2410 3901 0f87a1fdffff }
$sequence_2 = { e8???????? 8b45fc 33c6 2bc3 50 }
$sequence_3 = { ff15???????? 037df8 3975f8 75db 8b4514 33c9 }
$sequence_4 = { ff4d3c 7580 8b451c 8b4d24 014dfc c745d03223f000 }
$sequence_5 = { 8bec 51 51 837d1800 747b }
$sequence_6 = { ff75ec e8???????? 8b4df0 8b45f4 8d440801 8945fc 8d45d8 }
$sequence_7 = { 8b4508 8a08 884d0b 8a4d0b 8b55f8 0fb6c9 }
$sequence_8 = { 8d85ecfdffff 50 ffd6 a1???????? 0540010000 50 8d85ecfdffff }
$sequence_9 = { 8b4d0c 8b5520 33ce 8b8c118e40f2ff 8b10 8b18 }
$sequence_10 = { 59 68???????? 53 ffd7 5b 85c0 }
$sequence_11 = { ff15???????? 488b0d???????? 488364242000 488d5150 4c8d45d0 448bc8 }
$sequence_12 = { 8b5254 48 f7d0 23d0 8b45f4 }
$sequence_13 = { 488bcb ff15???????? 488d1563f0ffff 488bcf }
$sequence_14 = { 744f ba0c000000 4c8d8c24b0020000 488bce 448d4234 }
$sequence_15 = { 33c0 66390f 0f8515010000 8b4f3c 03cf 813950450000 }
$sequence_16 = { 4533c0 488bd5 498bcf ff15???????? 498bce }
$sequence_17 = { 488bd0 488bd8 ff15???????? 488d15d9f0ffff 488bcf ff15???????? }
$sequence_18 = { 0fb6c0 2bcb 3bc1 0f8462010000 }
$sequence_19 = { 8b4804 83e908 f7c1feffffff 763b 8b4dfc }
$sequence_20 = { 8d740650 8b02 0306 8b742418 }
$sequence_21 = { 4d2bc6 0fb701 6641398408a0010000 7530 ffc2 48ffc1 }
$sequence_22 = { 4533c0 418d5064 ff15???????? 4883c430 5b }
condition:
7 of them and filesize < 188416
}
Strings (23 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { ff15???????? 8d48bf 80f919 77f2 } | |
| $sequence_1 | hex | { 0301 8b4c2410 3901 0f87a1fdffff } | |
| $sequence_2 | hex | { e8???????? 8b45fc 33c6 2bc3 50 } | |
| $sequence_3 | hex | { ff15???????? 037df8 3975f8 75db 8b4514 33c9 } | |
| $sequence_4 | hex | { ff4d3c 7580 8b451c 8b4d24 014dfc c745d03223f000 } | |
| $sequence_5 | hex | { 8bec 51 51 837d1800 747b } | |
| $sequence_6 | hex | { ff75ec e8???????? 8b4df0 8b45f4 8d440801 8945fc 8d45d8 } | |
| $sequence_7 | hex | { 8b4508 8a08 884d0b 8a4d0b 8b55f8 0fb6c9 } | |
| $sequence_8 | hex | { 8d85ecfdffff 50 ffd6 a1???????? 0540010000 50 8d85ecfdffff } | |
| $sequence_9 | hex | { 8b4d0c 8b5520 33ce 8b8c118e40f2ff 8b10 8b18 } | |
| $sequence_10 | hex | { 59 68???????? 53 ffd7 5b 85c0 } | |
| $sequence_11 | hex | { ff15???????? 488b0d???????? 488364242000 488d5150 4c8d45d0 448bc8 } | |
| $sequence_12 | hex | { 8b5254 48 f7d0 23d0 8b45f4 } | |
| $sequence_13 | hex | { 488bcb ff15???????? 488d1563f0ffff 488bcf } | |
| $sequence_14 | hex | { 744f ba0c000000 4c8d8c24b0020000 488bce 448d4234 } | |
| $sequence_15 | hex | { 33c0 66390f 0f8515010000 8b4f3c 03cf 813950450000 } | |
| $sequence_16 | hex | { 4533c0 488bd5 498bcf ff15???????? 498bce } | |
| $sequence_17 | hex | { 488bd0 488bd8 ff15???????? 488d15d9f0ffff 488bcf ff15???????? } | |
| $sequence_18 | hex | { 0fb6c0 2bcb 3bc1 0f8462010000 } | |
| $sequence_19 | hex | { 8b4804 83e908 f7c1feffffff 763b 8b4dfc } | |
| $sequence_20 | hex | { 8d740650 8b02 0306 8b742418 } | |
| $sequence_21 | hex | { 4d2bc6 0fb701 6641398408a0010000 7530 ffc2 48ffc1 } | |
| $sequence_22 | hex | { 4533c0 418d5064 ff15???????? 4883c430 5b } |
Condition
7 of them and filesize < 188416In plain words (Heuristic)
- The file must be smaller than 188416 (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: 14bbde5d-15cc-5025-8b24-26e133addab2
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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