MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb2a7ca834acfa88aaf921b91fc0831369c8f9ea4979cb3f8f0f9b0449c09f70. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry

AsyncRAT

Vendor detections: 13

Intelligence 13 IOCs YARA 21 File information Comments

SHA256 hash:	cb2a7ca834acfa88aaf921b91fc0831369c8f9ea4979cb3f8f0f9b0449c09f70
SHA3-384 hash:	50b87f556bd9cbd39a8d8148be29bafd0091e26e950fa2ea4699d4a667ec5fda9b97511ef9eaca7e462eaaaac49bbe03
SHA1 hash:	b5b28e80140535e8010dadd03603ce458f410e2c
MD5 hash:	9739ebece3eafa90b3a954afd2009dca
humanhash:	three-mars-lamp-lima
File name:	Contract.vbs
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	178'922 bytes
First seen:	2026-09-10 06:05:05 UTC
Last seen:	Never
File type:	vbs
MIME type:	text/plain
ssdeep	3072:USIGlElZ1kfndVxYZa0WtT3lANQfUObj6BpAdOOfmABF4u69Xc/mz:JIE/x5023i6fUObjw5OuAANc/0
TLSH	T1440412228D481ABD82F668F148F29F9FB9367F716120C1F2BE9E9049CB1E11754D897C
Magika	vba
Reporter	abuse_ch
Tags:	AsyncRAT RAT vbs

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Detection:

XWorm

Link:

https://www.capesandbox.com/analysis/84726/

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

cmd lolbin obfuscated

Link:

https://www.filescan.io/uploads/6aa248a4328844f7c4792bff/reports/afd77cc4-806b-45cc-9328-8797ff4ab389/overview

Verdict:

Suspicious

Labled as:

DR/SNH

Link:

https://www.hybrid-analysis.com/sample/cb2a7ca834acfa88aaf921b91fc0831369c8f9ea4979cb3f8f0f9b0449c09f70

Verdict:

Malicious

File Type:

vbs

First seen:

2026-09-10T02:36:00Z UTC

Last seen:

2026-09-10T03:00:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/cb2a7ca834acfa88aaf921b91fc0831369c8f9ea4979cb3f8f0f9b0449c09f70/results?tab=lookup

Result

Threat name:

XWorm

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1971138

Signature

.NET source code contains method to dynamically call methods (often used by packers)

.NET source code contains potential unpacker

AI detected malicious Powershell script

Antivirus detection for dropped file

Bypasses PowerShell execution policy

C2 URLs / IPs found in malware configuration

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

Found malware configuration

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious sample

Loading BitLocker PowerShell Module

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Potential malicious VBS script found (has network functionality)

Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)

Sample uses string decryption to hide its real strings

Sigma detected: Invoke-Obfuscation VAR+ Launcher

Sigma detected: Suspicious Ping/Del Command Combination

Sigma detected: Suspicious Script Execution From Temp Folder

Sigma detected: WScript or CScript Dropper

Suricata IDS alerts for network traffic

Suspicious execution chain found

Suspicious powershell command line found

Tries to harvest and steal browser information (history, passwords, etc)

Uses ping.exe to check the status of other devices and networks

Uses ping.exe to sleep

Uses schtasks.exe or at.exe to add and modify task schedules

VBScript performs obfuscated calls to suspicious functions

Windows Scripting host queries suspicious COM object (likely to drop second stage)

Writes to foreign memory regions

WScript reads language and country specific registry keys (likely country aware script)

Wscript starts Powershell (via cmd or directly)

Yara detected AntiVM3

Yara detected Powershell decode and execute

Yara detected XWorm

Behaviour

Behavior Graph:

Download SVG

Score:

98%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/cb2a7ca834acfa88aaf921b91fc0831369c8f9ea4979cb3f8f0f9b0449c09f70

Verdict:

Malware

YARA:

3 match(es)

Tags:

Base64 Block Contains Base64 Block DeObfuscated PowerShell T1027 T1059.001

Link:

https://app.malva.re/file/9739ebece3eafa90b3a954afd2009dca

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/cb2a7ca834acfa88aaf921b91fc0831369c8f9ea4979cb3f8f0f9b0449c09f70/

Threat name:

Win32.Dropper.Generic

Status:

Suspicious

First seen:

2026-09-10 06:05:27 UTC

File Type:

Text (VBS)

AV detection:

4 of 36 (11.11%)

Threat level:

3/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=zmvhzkbuvt5irkxzeg4r7qedcnu4r6pkjf44wp4pb6nqisoat5ya._file

Verdict:

malicious

Label(s):

XWorm

Link:

https://reports.threatray.com/333af80a-803d-4c1c-8876-7bdff4028e53

Result

Malware family:

xworm

Score:

10/10

Tags:

family:xworm collection discovery execution persistence privilege_escalation rat trojan

Link:

https://tria.ge/reports/260910-gtc9ls1zey/

Behaviour

Runs ping.exe

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

outlook_office_path

outlook_win_path

Enumerates physical storage devices

Executes a command shell one-liner

System Location Discovery: System Language Discovery

System Network Configuration Discovery: Internet Connection Discovery

Executes a VBScript file via the Windows Script Host.

Suspicious use of SetThreadContext

Accesses Microsoft Outlook profiles

Adds Run key to start application

Checks computer location settings

Creates a file in the Startup directory

Executes dropped EXE

Command and Scripting Interpreter: PowerShell

Detect Xworm Payload

Family: Xworm

Malware Config

C2 Extraction:

185.29.10.23:1012

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/cb2a7ca834acfa88aaf921b91fc0831369c8f9ea4979cb3f8f0f9b0449c09f70

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:	ByteCode_MSIL_Backdoor_AsyncRAT Create hunting rule
Author:	ReversingLabs
Description:	Yara rule that detects AsyncRAT backdoor.

Rule name:	CMD_Ping_Localhost Create hunting rule

Rule name:	detect_powershell Create hunting rule
Author:	daniyyell
Description:	Detects suspicious PowerShell activity related to malware execution

Rule name:	Detect_PowerShell_Obfuscation Create hunting rule
Author:	daniyyell
Description:	Detects obfuscated PowerShell commands commonly used in malicious scripts.

Rule name:	detect_tiny_vbs Create hunting rule
Author:	daniyyell
Description:	Detects tiny VBS delivery technique

Rule name:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

Rule name:	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA Create hunting rule
Author:	ditekSHen
Description:	Detects Windows executables referencing non-Windows User-Agents

Rule name:	MALWARE_Win_AsyncRAT Create hunting rule
Author:	ditekSHen
Description:	Detects AsyncRAT

Rule name:	MALWARE_Win_XWorm Create hunting rule
Author:	ditekSHen
Description:	Detects XWorm

Rule name:	Multifamily_RAT_Detection Create hunting rule
Author:	Lucas Acha (https://www.lukeacha.com)
Description:	Generic detection for multiple RAT families, PUPs, packers and suspicious executables. NOTE: This rule may produce false positives. Updated May 2026 to reduce False Positives.

Rule name:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	Njrat Create hunting rule
Author:	botherder https://github.com/botherder
Description:	Njrat

Rule name:	pe_imphash Create hunting rule

Rule name:	rat_win_xworm_v3 Create hunting rule
Author:	Sekoia.io
Description:	Finds XWorm (version XClient, v3) samples based on characteristic strings

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	SUSP_DOTNET_PE_List_AV Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detecs .NET Binary that lists installed AVs

Rule name:	Sus_CMD_Powershell_Usage Create hunting rule
Author:	XiAnzheng
Description:	May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

Rule name:	VECT_Ransomware Create hunting rule
Author:	Mustafa Bakhit
Description:	Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

Rule name:	win_dotnet_vb_stealer_rat Create hunting rule
Author:	Arrbat
Description:	Detects .NET/VB executables with stealer/RAT capabilities (sockets, HTTP, processes, registry, etc).

Rule name:	win_xworm_w0 Create hunting rule
Author:	jeFF0Falltrades
Description:	Detects win.xworm.

Rule name:	xworm Create hunting rule
Author:	jeFF0Falltrades

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape

https://www.capesandbox.com/analysis/84726/

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