MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb771ef229da7772ddb8f233e4e208ffc4edf6cbfca5452806e0a48222c712a5. 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: 15

Intelligence 15 IOCs YARA 22 File information Comments

SHA256 hash:	bb771ef229da7772ddb8f233e4e208ffc4edf6cbfca5452806e0a48222c712a5
SHA3-384 hash:	fc81a80ed3593ad41267d822aaf12d8c893ab58985cdd4a0000f3d69d40eda504a04a7c242c32ed5e9b6a8f75f1ae21f
SHA1 hash:	d9206809f342dd68dc83cbb6c8c112551409678d
MD5 hash:	d148428f3d22493cdfa272d7ad235710
humanhash:	summer-golf-cardinal-montana
File name:	Dekont.pdf.VBE
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	397'633 bytes
First seen:	2026-11-13 13:38:51 UTC
Last seen:	Never
File type:	vbe
MIME type:	text/plain
ssdeep	12288:L8h+1tIMIyy9Y9UJKk7GiI8/Z2JBETWQvUX:Ls+bjIOU7I2Z2JBbN
TLSH	T13984F15584C03FB4FB69761880FDA22E93F1468B9D6D2D4ABB33BE469FB75009207187
Magika	vba
Reporter	abuse_ch
Tags:	AsyncRAT geo RAT TUR vbe

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6af713500a71acf937da756d

Tags:

injection stration shell zbot

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file

Creating a process from a recently created file

Creating a process with a hidden window

Launching a process

Creating synchronization primitives

Connection attempt

Sending a custom TCP request

Using the Windows Management Instrumentation requests

Forced shutdown of a system process

Unauthorized injection to a system process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

aes base64 crypto evasive obfuscated powershell

Link:

https://www.filescan.io/uploads/6af713157333374262d450ec/reports/00b4e99c-47fc-40f3-96ee-979108443148/overview

Verdict:

Malicious

Labled as:

GT:VB.Zbot.9

Link:

https://www.hybrid-analysis.com/sample/bb771ef229da7772ddb8f233e4e208ffc4edf6cbfca5452806e0a48222c712a5

Verdict:

Malicious

File Type:

vbs

Link:

https://opentip.kaspersky.com/bb771ef229da7772ddb8f233e4e208ffc4edf6cbfca5452806e0a48222c712a5/results?tab=lookup

Result

Threat name:

XWorm

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/2005422

Signature

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

.NET source code contains potential unpacker

Bypasses PowerShell execution policy

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

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: Suspicious PowerShell Parameter Substring

Sigma detected: WScript or CScript Dropper

Suricata IDS alerts for network traffic

Suspicious execution chain found

Uses an obfuscated file name to hide its real file extension (double extension)

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 Powershell decode and execute

Yara detected XWorm

Behaviour

Behavior Graph:

Download SVG

Score:

98%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/bb771ef229da7772ddb8f233e4e208ffc4edf6cbfca5452806e0a48222c712a5

Verdict:

Malware

YARA:

2 match(es)

Tags:

Base64 Block Contains Base64 Block DeObfuscated PowerShell T1027 T1059.001

Link:

https://app.malva.re/file/d148428f3d22493cdfa272d7ad235710

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/bb771ef229da7772ddb8f233e4e208ffc4edf6cbfca5452806e0a48222c712a5/

Threat name:

Script.Infostealer.Zeus

Status:

Malicious

First seen:

2026-11-13 13:03:35 UTC

File Type:

Text (VBS)

AV detection:

12 of 38 (31.58%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=xn3r54rj3j3xfxny6iz6jyqi77co35wl7ssukkag4csieiwhcksq._file

Verdict:

malicious

Label(s):

XWorm

Link:

https://reports.threatray.com/58b1c505-2cae-44f5-ae40-da58b5132b88

Result

Malware family:

xworm

Score:

10/10

Tags:

family:xworm defense_evasion discovery execution rat trojan

Link:

https://tria.ge/reports/261113-qx3s4scs8s/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Command and Scripting Interpreter: PowerShell

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Enumerates video capture drivers

Executes a VBScript file via the Windows Script Host.

Suspicious use of SetThreadContext

Checks computer location settings

Detect Xworm Payload

Family: Xworm

Malware Config

C2 Extraction:

203.202.232.91:7004

Malware Family:

zbot

Malicious:

True

Tags:

file-write file-create exec-dll obfuscated vba polymorphic powershell exe-pattern exec

Link:

https://intel.virussign.com/intelligence/file/bb771ef229da7772ddb8f233e4e208ffc4edf6cbfca5452806e0a48222c712a5

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

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:	Base64_Encoded_Powershell_Directives Create hunting rule

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

Rule name:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

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:	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:	MAL_AsyncRAT_Family_V_0_5_8 Create hunting rule
Author:	Trezzza
Description:	Detects AsyncRAT version 0.5.8 and some other versions of AsyncRAT. The name reflects the analysed sample.

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:	VIGIA_AsyncRAT_d854a41a Create hunting rule
Author:	VIG-IA - Cognitive Threat Intelligence System for Smart Territories and Tourism Sector
Description:	AsyncRAT detection using discriminating indicators and corroborating behaviors
Reference:	https://vigia.bisite.es/

Rule name:	WIN_Malware_XWorm_ForgeAuto_6b06c990_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects XWorm (pe, etat extrait)

Rule name:	WIN_Sample_Unique_69354b41 Create hunting rule
Author:	Marjoriefort
Description:	Specimen unique (soumission Bazaar) - strings distinctifs propres au sample
Reference:	69354b41e10daf03d3f3af881b32d5c0fec56b1cfe96629fd4c5263413a42854.exe

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.

No further information available

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