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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:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "077eac03-f3ac-5e2b-a96b-7f5530f41d45"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sphijacker"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.sphijacker_auto.yar#L1-L122"
		license_url = "N/A"
		logic_hash = "99b2b9f410e1eea51f0fdbb2a2e5758813b393a388e6990a38118e63ac79cf3a"
		score = 75
		quality = 75
		tags = "FILE"
		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"

	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)

IdentifierTypeValueModifiers
$sequence_0hex{ 33db 488d154de60100 4533c0 488d0c9b 488d0cca baa00f0000 e8???????? }
$sequence_1hex{ 4885c9 741c 488d05208b0000 483bc8 7410 b801000000 f00fc1815c010000 }
$sequence_2hex{ 488d159ee00100 ff15???????? 488b4d20 488d4510 c744242804000000 }
$sequence_3hex{ 488d8d16120000 0f1005???????? 898510120000 33d2 0fb705???????? 41b8f2010000 }
$sequence_4hex{ 6666660f1f840000000000 803099 488d4004 4883e901 75f3 }
$sequence_5hex{ 488d4510 c744242804000000 488d158fdb0100 41b904000000 4889442420 }
$sequence_6hex{ 4533db 488d3d6b340000 4d85c9 488bc2 4c8be2 }
$sequence_7hex{ 488b4d18 4c8d4520 488d158ee30100 ff15???????? 488b4d20 }
$sequence_8hex{ 8b442430 8bc8 cd29 488d0d765e0100 e8???????? 488b442428 }
$sequence_9hex{ 57 4883ec20 418bf0 4c8d0d2b320100 8bda 4c8d051a320100 488bf9 }

Condition

7 of them and filesize < 808960

In 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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Open in editor

References

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)

Original rule

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

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE