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DITEKSHEN_MALWARE_Win_Sectoprat

Detects SectopRAT

MalwareSectopratditekSHen 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 SectopRAT

Associated malware family: Sectoprat.

Targets: Windows PE.

It defines 18 patterns (18 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

malware-win-sectoprat.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Sectoprat : FILE
{
	meta:
		description = "Detects SectopRAT"
		author = "ditekSHen"
		id = "d6594834-24d7-5e86-84b5-5a7920e7bc89"
		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#L7904-L7929"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "b4048f837c02560a8b650247173be25893b466e5cec8f2784eea58172f973822"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "\\\\.\\root\\cimv2:Win32_Process" wide
		$s2 = "\\\\.\\root\\cimv2:CIM_DataFile.Name=" wide
		$s3 = "^.*(?=Windows)" fullword wide
		$s4 = "C:\\Windows\\System32\\cmd.exe" wide
		$s5 = "C:\\Windows\\explorer.exe" wide
		$s6 = "Disabling IE protection" wide
		$s7 = "stream started succces" wide
		$b1 = "/C start Firefox" wide
		$b2 = "/C start chrome" wide
		$b3 = "/C start iexplore" wide
		$m1 = "DefWindowProc" fullword ascii
		$m2 = "AuthStream" fullword ascii
		$m3 = "KillBrowsers" fullword ascii
		$m4 = "GetAllNetworkInterfaces" fullword ascii
		$m5 = "EnumDisplayDevices" fullword ascii
		$m6 = "RemoteClient.Packets" fullword ascii
		$m7 = "IServerPacket" fullword ascii
		$m8 = "keybd_event" fullword ascii

	condition:
		uint16( 0 ) == 0x5a4d and ( ( 5 of ( $s* ) and 2 of ( $b* ) ) or all of ( $s* ) or ( all of ( $b* ) and ( 4 of ( $s* ) or 5 of ( $m* ) ) ) )
}

Strings (18 patterns)

IdentifierTypeValueModifiers
$s1text"\\\\.\\root\\cimv2:Win32_Process"wide
$s2text"\\\\.\\root\\cimv2:CIM_DataFile.Name="wide
$s3text"^.*(?=Windows)"fullword wide
$s4text"C:\\Windows\\System32\\cmd.exe"wide
$s5text"C:\\Windows\\explorer.exe"wide
$s6text"Disabling IE protection"wide
$s7text"stream started succces"wide
$b1text"/C start Firefox"wide
$b2text"/C start chrome"wide
$b3text"/C start iexplore"wide
$m1text"DefWindowProc"fullword ascii
$m2text"AuthStream"fullword ascii
$m3text"KillBrowsers"fullword ascii
$m4text"GetAllNetworkInterfaces"fullword ascii
$m5text"EnumDisplayDevices"fullword ascii
$m6text"RemoteClient.Packets"fullword ascii
$m7text"IServerPacket"fullword ascii
$m8text"keybd_event"fullword ascii

Condition

uint16( 0 ) == 0x5a4d and ( ( 5 of ( $s* ) and 2 of ( $b* ) ) or all of ( $s* ) or ( all of ( $b* ) and ( 4 of ( $s* ) or 5 of ( $m* ) ) ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • All patterns in ( $s* ) must match.
  • All patterns in ( $b* ) must match.
  • At least 5 patterns in ( $s* ) must match.
  • At least 2 patterns in ( $b* ) must match.
  • At least 4 patterns in ( $s* ) must match.
  • At least 5 patterns in ( $m* ) 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: d6594834-24d7-5e86-84b5-5a7920e7bc89

Tags:FILE