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YARA · Signature Base (Florian Roth / Nextron)

SIGNATURE_BASE_LOG_EXPL_Moveit_Exploitation_Indicator_Jun23_3

Detects a potential compromise indicator found in MOVEit DMZ Web API logs

ExploitSignature Base (Florian Roth / Nextron)Detection Rule License 1.1Compiles with YARA-X
Author
Nasreddine Bencherchali
Date
2023-06-13
Modified
2023-12-05
Score / Quality
70 / 85

What this rule detects

Detects a potential compromise indicator found in MOVEit DMZ Web API logs

It defines 2 patterns (2 text, 0 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

Download .yar
log-expl-moveit-exploitation-indicator-jun23-3.yarDetection Rule License 1.1
rule SIGNATURE_BASE_LOG_EXPL_Moveit_Exploitation_Indicator_Jun23_3
{
	meta:
		description = "Detects a potential compromise indicator found in MOVEit DMZ Web API logs"
		author = "Nasreddine Bencherchali"
		id = "113a501f-d9ed-51fd-82cd-ccb6f02833bd"
		date = "2023-06-13"
		modified = "2023-12-05"
		reference = "https://attackerkb.com/topics/mXmV0YpC3W/cve-2023-34362/rapid7-analysis"
		source_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/yara/vuln_moveit_0day_jun23.yar#L81-L94"
		license_url = "https://github.com/Neo23x0/signature-base/blob/94a1c48d7ab499879287ff611dfe7f9c56376030/LICENSE"
		logic_hash = "2eaa06c31687c6368f036a705fdc1b1c42355f19c098ae764a998039cc4aebb5"
		score = 70
		quality = 85
		tags = ""

	strings:
		$s1 = "TargetInvocationException" ascii
		$s2 = "MOVEit.DMZ.Application.Folders.ResumableUploadFilePartHandler.DeserializeFileUploadStream" ascii

	condition:
		all of ( $s* )
}

Strings (2 patterns)

IdentifierTypeValueModifiers
$s1text"TargetInvocationException"ascii
$s2text"MOVEit.DMZ.Application.Folders.ResumableUploadFilePartHandler.DeserializeFileUploadStream"ascii

Condition

all of ( $s* )

In plain words (Heuristic)

  • All patterns in ( $s* ) must match.

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References

Licence & attribution

Author: Nasreddine Bencherchali

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: 113a501f-d9ed-51fd-82cd-ccb6f02833bd

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