MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c1ac769ec9cf447b6f4b5ab9bfd64fb931a73ab2e9ea6dd5408d22b161ff15bb. 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: 12

Intelligence 12 IOCs YARA 16 File information Comments

SHA256 hash:	c1ac769ec9cf447b6f4b5ab9bfd64fb931a73ab2e9ea6dd5408d22b161ff15bb
SHA3-384 hash:	3fc0d1dc00cd94211d62a76cfa2460326a59c4bbdecfbd1d287cceba1b7047d161dea5322a9ca78b1d5db5d5d7de1339
SHA1 hash:	4891a2a0931ebf697f988ca3b9b748c071994b76
MD5 hash:	b7bf02922b41da55be1847091790e867
humanhash:	romeo-hamper-orange-jupiter
File name:	svchost.vbs
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	131'675 bytes
First seen:	2026-09-30 08:15:42 UTC
Last seen:	Never
File type:	vbs
MIME type:	text/plain
ssdeep	3072:6eVKKbDAm/kwZZ2BCbsUyIVV9Cuy1hQJKl+3mW0Eyhtxpi8Wch/:4BPW0vxpi8LN
TLSH	T13AD3B3110BA6067FF5BD0ED5844FE01B2CF694267825058AAF732AE77DE7B80DE31126
Magika	vba
Reporter	abuse_ch
Tags:	AsyncRAT RAT vbs

Intelligence

File Origin

# of uploads :

# of downloads :

121

Origin country :

Vendor Threat Intelligence

No detections

Detection:

XWorm

Link:

https://www.capesandbox.com/analysis/89826/

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

cmd cscript dropper encrypted evasive lolbin obfuscated packed persistence regasm schtasks wscript

Link:

https://www.filescan.io/uploads/6abcc55125669a719c0c06b7/reports/53364dd9-46ce-4f8c-a442-e79034906920/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/c1ac769ec9cf447b6f4b5ab9bfd64fb931a73ab2e9ea6dd5408d22b161ff15bb

Verdict:

Malicious

File Type:

vbs

First seen:

2026-09-29T13:17:00Z UTC

Last seen:

2026-10-01T08:53:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/c1ac769ec9cf447b6f4b5ab9bfd64fb931a73ab2e9ea6dd5408d22b161ff15bb/results?tab=lookup

Result

Threat name:

XWorm

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1979931

Signature

Allocates memory in foreign processes

Antivirus detection for dropped file

Antivirus detection for URL or domain

Benign windows process drops PE files

C2 URLs / IPs found in malware configuration

Found malware configuration

Injects a PE file into a foreign processes

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Potential evasive JS / VBS script found (domain check)

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: Bad Opsec Defaults Sacrificial Processes With Improper Arguments

Sigma detected: Potentially Suspicious Malware Callback Communication

Sigma detected: Scheduled temp file as task from temp location

Sigma detected: Script Interpreter Execution From Suspicious Folder

Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder

Sigma detected: WScript or CScript Dropper

Sigma detected: WScript or CScript Dropper - File

Suricata IDS alerts for network traffic

Suspicious execution chain found

Tries to detect sleep reduction / modifications

Uses dynamic DNS services

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)

Windows Shell Script Host drops VBS files

Writes to foreign memory regions

Wscript called in batch mode (surpress errors)

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

Yara detected XWorm

Behaviour

Behavior Graph:

Download SVG

Score:

52%

Verdict:

Susipicious

File Type:

SCRIPT

Link:

https://malprob.io/report/c1ac769ec9cf447b6f4b5ab9bfd64fb931a73ab2e9ea6dd5408d22b161ff15bb

Verdict:

Malware

YARA:

1 match(es)

Tags:

ADODB.Stream Batch Command COM Behavior Trace DeObfuscated Obfuscated PowerShell PowerShell Call SOS: 0.56 T1027 T1059 T1059.001 T1059.005 VBScript WScript.Shell

Link:

https://app.malva.re/file/b7bf02922b41da55be1847091790e867

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c1ac769ec9cf447b6f4b5ab9bfd64fb931a73ab2e9ea6dd5408d22b161ff15bb/

Threat name:

Win32.Trojan.Ravartar

Status:

Malicious

First seen:

2026-09-30 01:03:12 UTC

File Type:

Text

AV detection:

10 of 24 (41.67%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ygwhnhwjz5chw32llk437vspxey2oovs5hvg3vkarurlcyp7cw5q._file

Verdict:

malicious

Label(s):

XWorm

Link:

https://reports.threatray.com/911dd89a-b999-4b00-a71a-f7e12c59b54b

Result

Malware family:

xworm

Score:

10/10

Tags:

family:xworm defense_evasion discovery execution persistence rat trojan

Link:

https://tria.ge/reports/260930-j58wrsxy7j/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Command and Scripting Interpreter: JavaScript

Enumerates physical storage devices

Executes a command shell one-liner

Reads the TCP/IP host and domain name from the registry

System Location Discovery: System Language Discovery

Executes a VBScript file via the Windows Script Host.

Suspicious use of SetThreadContext

Indicator Removal: File Deletion

Checks computer location settings

Executes dropped EXE

Detect Xworm Payload

Family: Xworm

Malware Config

C2 Extraction:

medellin202156.duckdns.org:7777

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/c1ac769ec9cf447b6f4b5ab9bfd64fb931a73ab2e9ea6dd5408d22b161ff15bb

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

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:	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_Sample_Unique_69354b41 Create hunting rule
Author:	Marjoriefort
Description:	Specimen unique (soumission Bazaar) - strings distinctifs propres au sample
Reference:	69354b41e10daf03d3f3af881b32d5c0fec56b1cfe96629fd4c5263413a42854.exe