YARA · Malpedia signator rules
MALPEDIA_Win_Sphijacker_Auto
autogenerated rule brought to you by yara-signator
MalwareSphijackerMalpedia 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: Sphijacker.
It defines 10 patterns (0 text, 10 hex, 0 regex).
Summary generated from the rule's metadata and condition.
Rule source
win-sphijacker-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Sphijacker_Auto : FILE
{
meta:
= "autogenerated rule brought to you by yara-signator"
= "Felix Bilstein - yara-signator at cocacoding dot com"
= "077eac03-f3ac-5e2b-a96b-7f5530f41d45"
= "2026-05-04"
= "2026-05-18"
= "https://malpedia.caad.fkie.fraunhofer.de/details/win.sphijacker"
= "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.sphijacker_auto.yar#L1-L122"
= "N/A"
= "99b2b9f410e1eea51f0fdbb2a2e5758813b393a388e6990a38118e63ac79cf3a"
= 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 = { 33db 488d154de60100 4533c0 488d0c9b 488d0cca baa00f0000 e8???????? }
$sequence_1 = { 4885c9 741c 488d05208b0000 483bc8 7410 b801000000 f00fc1815c010000 }
$sequence_2 = { 488d159ee00100 ff15???????? 488b4d20 488d4510 c744242804000000 }
$sequence_3 = { 488d8d16120000 0f1005???????? 898510120000 33d2 0fb705???????? 41b8f2010000 }
$sequence_4 = { 6666660f1f840000000000 803099 488d4004 4883e901 75f3 }
$sequence_5 = { 488d4510 c744242804000000 488d158fdb0100 41b904000000 4889442420 }
$sequence_6 = { 4533db 488d3d6b340000 4d85c9 488bc2 4c8be2 }
$sequence_7 = { 488b4d18 4c8d4520 488d158ee30100 ff15???????? 488b4d20 }
$sequence_8 = { 8b442430 8bc8 cd29 488d0d765e0100 e8???????? 488b442428 }
$sequence_9 = { 57 4883ec20 418bf0 4c8d0d2b320100 8bda 4c8d051a320100 488bf9 }
condition:
7 of them and filesize < 808960
}
Strings (10 patterns)
| Identifier | Type | Value | Modifiers |
|---|---|---|---|
| $sequence_0 | hex | { 33db 488d154de60100 4533c0 488d0c9b 488d0cca baa00f0000 e8???????? } | |
| $sequence_1 | hex | { 4885c9 741c 488d05208b0000 483bc8 7410 b801000000 f00fc1815c010000 } | |
| $sequence_2 | hex | { 488d159ee00100 ff15???????? 488b4d20 488d4510 c744242804000000 } | |
| $sequence_3 | hex | { 488d8d16120000 0f1005???????? 898510120000 33d2 0fb705???????? 41b8f2010000 } | |
| $sequence_4 | hex | { 6666660f1f840000000000 803099 488d4004 4883e901 75f3 } | |
| $sequence_5 | hex | { 488d4510 c744242804000000 488d158fdb0100 41b904000000 4889442420 } | |
| $sequence_6 | hex | { 4533db 488d3d6b340000 4d85c9 488bc2 4c8be2 } | |
| $sequence_7 | hex | { 488b4d18 4c8d4520 488d158ee30100 ff15???????? 488b4d20 } | |
| $sequence_8 | hex | { 8b442430 8bc8 cd29 488d0d765e0100 e8???????? 488b442428 } | |
| $sequence_9 | hex | { 57 4883ec20 418bf0 4c8d0d2b320100 8bda 4c8d051a320100 488bf9 } |
Condition
7 of them and filesize < 808960In plain words (Heuristic)
- The file must be smaller than 808960 (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: 077eac03-f3ac-5e2b-a96b-7f5530f41d45
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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