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DITEKSHEN_MALWARE_Win_Backnet

BackNet payload

MalwareBacknetditekSHen 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

BackNet payload

Associated malware family: Backnet.

Targets: Windows PE.

It defines 9 patterns (9 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
malware-win-backnet.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Backnet : FILE
{
	meta:
		description = "BackNet payload"
		author = "ditekSHen"
		id = "c53ef72f-4957-5ddb-b096-dcdb69cf900d"
		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#L369-L386"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "c276f2b809caad680455fc4ca0a021887d4ff2c9114f05737542a1d3c5cca848"
		score = 75
		quality = 75
		tags = "FILE"
		clamav_sig = "MALWARE.Win.Trojan.BackNet"

	strings:
		$s1 = "Slave.Commands." fullword ascii
		$s2 = "StartKeylogger" fullword ascii
		$s3 = "StopKeylogger" fullword ascii
		$s4 = "KeyLoggerCommand" fullword ascii
		$s5 = "get_keyLoggerManager" fullword ascii
		$s6 = "get_IgnoreMutex" fullword ascii
		$s7 = "ListProcesses" fullword ascii
		$s8 = "downloadurl" fullword wide
		$pdb = "\\BackNet-master\\Slave\\obj\\Release\\Slave.pdb" ascii

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

Strings (9 patterns)

IdentifierTypeValueModifiers
$s1text"Slave.Commands."fullword ascii
$s2text"StartKeylogger"fullword ascii
$s3text"StopKeylogger"fullword ascii
$s4text"KeyLoggerCommand"fullword ascii
$s5text"get_keyLoggerManager"fullword ascii
$s6text"get_IgnoreMutex"fullword ascii
$s7text"ListProcesses"fullword ascii
$s8text"downloadurl"fullword wide
$pdbtext"\\BackNet-master\\Slave\\obj\\Release\\Slave.pdb"ascii

Condition

uint16( 0 ) == 0x5a4d and ( $pdb or all of ( $s* ) )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • All patterns in ( $s* ) must match.
  • Pattern $pdb must be present.

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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: c53ef72f-4957-5ddb-b096-dcdb69cf900d

Metadata

clamav_sigMALWARE.Win.Trojan.BackNet

Tags:FILE

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