Skip to content

YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_MAL_RANSOM_Lockbit_Locker_LOG_Apr23_1

Detects indicators found in LockBit ransomware log files

MalwareLockbitSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X
Author
Florian Roth
Date
2023-04-17
Modified
2023-12-05
Score / Quality
75 / 85

What this rule detects

Detects indicators found in LockBit ransomware log files

Associated malware family: Lockbit.

It defines 4 patterns (4 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

mal-ransom-lockbit-locker-log-apr23-1.yarDetection Rule License 1.1
rule SIGNATURE_BASE_MAL_RANSOM_Lockbit_Locker_LOG_Apr23_1
{
	meta:
		description = "Detects indicators found in LockBit ransomware log files"
		author = "Florian Roth"
		id = "aa0a2393-e5a2-5151-8afb-91a9bb922179"
		date = "2023-04-17"
		modified = "2023-12-05"
		reference = "https://objective-see.org/blog/blog_0x75.html"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/mal_lockbit_lnx_macos_apr23.yar#L69-L84"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		logic_hash = "d5f96e601150209382d3f6458863bc79768beb99b587aa8d9ba37cb2c11ef634"
		score = 75
		quality = 85
		tags = ""

	strings:
		$s1 = " is encrypted. Checksum after encryption "
		$s2 = "~~~~~Hardware~~~~"
		$s3 = "[+] Add directory to encrypt:"
		$s4 = "][+] Launch parameters: "

	condition:
		2 of them
}

Strings (4 patterns)

IdentifierTypeValueModifiers
$s1text" is encrypted. Checksum after encryption "
$s2text"~~~~~Hardware~~~~"
$s3text"[+] Add directory to encrypt:"
$s4text"][+] Launch parameters: "

Condition

2 of them

In plain words (Heuristic)

  • At least 2 patterns in the rule must match.

Test this rule in your browser

Drop a file to scan it with this rule using YARA-X compiled to WebAssembly. Nothing is uploaded.

Drop a file here or click to chooseScanned locally with YARA-X. Files up to 200 MB.

Open in editor

References

Licence & attribution

Author: Florian Roth

Source repository: Signature Base (Florian Roth / Nextron) @ 94a1c48d7a

Licence: Detection Rule License 1.1 (repository licence)

Original rule

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

Rule id: aa0a2393-e5a2-5151-8afb-91a9bb922179

More Lockbit rules