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DITEKSHEN_MALWARE_Win_Softcnapp

Detects SoftCNApp

MalwareSoftcnappditekSHen detectionBSD 2-Clause LicenseCompiles with YARA-X
Author
ditekSHen
Date
2020-11-06
Modified
2024-11-01
Score / Quality
75 / 75

What this rule detects

Detects SoftCNApp

Associated malware family: Softcnapp.

Targets: Windows PE.

It defines 10 patterns (10 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-softcnapp.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Softcnapp : FILE
{
	meta:
		description = "Detects SoftCNApp"
		author = "ditekSHen"
		id = "473442e2-d411-5e2b-948e-c7ce034a5810"
		date = "2020-11-06"
		modified = "2024-11-01"
		reference = "https://github.com/ditekshen/detection"
		source_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/yara/malware.yar#L5566-L5583"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "2d7f4320282218842fa2e82906bcaf691610ad1a6ea257a2a9fc9e062229a2e8"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "\\\\.\\PIPE\\SOC%d" fullword ascii
		$s2 = "Mozilla/5.0 (Windows NT 6.1)" fullword ascii
		$s3 = "Param: sl=%d; sl=%d; sl=%d; sl=%d; sl=%d;" fullword ascii
		$s4 = ".?AVCHPPlugin@@" fullword ascii
		$s5 = ".?AVCHPCmd@@" fullword ascii
		$s6 = ".?AVCHPExplorer@@" fullword ascii
		$s7 = "%s\\svchost.exe -O" fullword wide
		$s8 = "\"%s\\%s\" -P" fullword ascii
		$n1 = "45.63.58.34" fullword ascii
		$n2 = "127.0.0.1" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( 4 of ( $s* ) or ( all of ( $n* ) and 2 of ( $s* ) ) )
}

Strings (10 patterns)

IdentifierTypeValueModifiers
$s1text"\\\\.\\PIPE\\SOC%d"fullword ascii
$s2text"Mozilla/5.0 (Windows NT 6.1)"fullword ascii
$s3text"Param: sl=%d; sl=%d; sl=%d; sl=%d; sl=%d;"fullword ascii
$s4text".?AVCHPPlugin@@"fullword ascii
$s5text".?AVCHPCmd@@"fullword ascii
$s6text".?AVCHPExplorer@@"fullword ascii
$s7text"%s\\svchost.exe -O"fullword wide
$s8text"\"%s\\%s\" -P"fullword ascii
$n1text"45.63.58.34"fullword ascii
$n2text"127.0.0.1"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and ( 4 of ( $s* ) or ( all of ( $n* ) and 2 of ( $s* ) ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • All patterns in ( $n* ) must match.
  • At least 4 patterns in ( $s* ) must match.
  • At least 2 patterns in ( $s* ) must match.

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References

Licence & attribution

Author: ditekSHen

Source repository: ditekSHen detection @ e76c93dcde

Licence: BSD 2-Clause License (repository licence)

Copyright notice: Copyright 2021 by ditekSHen (https://github.com/ditekshen/detection).

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 473442e2-d411-5e2b-948e-c7ce034a5810

Tags:FILE

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