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DITEKSHEN_MALWARE_Win_Bazarloader

Detects BazarLoader variants

MalwareBazarloaderditekSHen 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 BazarLoader variants

Associated malware family: Bazarloader.

Targets: Windows PE.

It defines 6 patterns (6 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

malware-win-bazarloader.yarBSD 2-Clause License
rule DITEKSHEN_MALWARE_Win_Bazarloader : FILE
{
	meta:
		description = "Detects BazarLoader variants"
		author = "ditekSHen"
		id = "6282df59-7244-501f-bb60-09a2a519bd47"
		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#L5763-L5776"
		license_url = "https://github.com/ditekshen/detection/blob/e76c93dcdedff04076380ffc60ea54e45b313635/LICENSE.txt"
		logic_hash = "8febd1355bc03f71794ffb8d51cbb112e8acd2d26fec5bb736a388d5384e7747"
		score = 75
		quality = 75
		tags = "FILE"

	strings:
		$s1 = "Startdelay for %d ms to avoid some dynamic AV detects!" ascii
		$s2 = "Use Debug for moving faster!" ascii
		$s3 = "Logging Mutex %s to %s" ascii
		$s4 = "FIRST AND ONLY COPY RUNNING! Mutex %s" ascii
		$s5 = "the most secret 3d GetWinApiPointers line in the world!" ascii
		$s6 = "[+] makeMD5hash. " ascii

	condition:
		uint16( 0 ) == 0x5a4d and 3 of ( $s* )
}

Strings (6 patterns)

IdentifierTypeValueModifiers
$s1text"Startdelay for %d ms to avoid some dynamic AV detects!"ascii
$s2text"Use Debug for moving faster!"ascii
$s3text"Logging Mutex %s to %s"ascii
$s4text"FIRST AND ONLY COPY RUNNING! Mutex %s"ascii
$s5text"the most secret 3d GetWinApiPointers line in the world!"ascii
$s6text"[+] makeMD5hash. "ascii

Condition

uint16( 0 ) == 0x5a4d and 3 of ( $s* )

In plain words (Heuristic)

  • The file must start with “MZ” — a Windows executable (PE).
  • At least 3 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: 6282df59-7244-501f-bb60-09a2a519bd47

Tags:FILE

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