MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b578402eebfe063f3b62ffa7fae581831d3d6be08aebeba70de74aa6422dc40. 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 22 File information Comments

SHA256 hash:	1b578402eebfe063f3b62ffa7fae581831d3d6be08aebeba70de74aa6422dc40
SHA3-384 hash:	884119e98ba31d6221f89779c70e3bc3068fcbf303f6c50da806eaf5f2953ee1421d1cac20fd53e918d4f0547de96d94
SHA1 hash:	de1bb47bb186cd988584a4bda02e713079f0ab83
MD5 hash:	45d44ee1a4c5dc3d6813844f769884b7
humanhash:	blue-alabama-cola-oxygen
File name:	1C26MYY_1431.js
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	471'998 bytes
First seen:	2026-07-09 08:29:24 UTC
Last seen:	Never
File type:	js
MIME type:	text/plain
ssdeep	12288:IWx8xvqwlkKa5K0CYtI93i07fzTJgmoYdg4+OiYBF/:+LkKiKYa9Nzfy+dg8h
TLSH	T1FFA4CF009BD0B88867E75F39B22F74D8F2B508EA69514B4BF311FC48F6A5905EDC66B0
Magika	javascript
Reporter	abuse_ch
Tags:	AsyncRAT js RAT

Intelligence

File Origin

# of uploads :

# of downloads :

167

Origin country :

Vendor Threat Intelligence

No detections

Detection(s):

Sanesecurity.Malware.32567.UNOFFICIAL

Verdict:

Malicious

Score:

94.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6a4f5c80a900f0e9eb6b0204

Tags:

loveletter keylog shell word

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm aspnet_compiler base64 base64 downloader encrypted evasive evasive fingerprint lolbin obfuscated obfuscated powershell reconnaissance repaired xloader

Link:

https://www.filescan.io/uploads/6a4f5c691ce722db977cab9f/reports/9d05168d-5386-40fc-a11a-c424c9d38966/overview

Verdict:

Malicious

Labled as:

JS/Packed.Agent

Link:

https://www.hybrid-analysis.com/sample/1b578402eebfe063f3b62ffa7fae581831d3d6be08aebeba70de74aa6422dc40

Verdict:

Malicious

File Type:

First seen:

2026-07-08T21:42:00Z UTC

Last seen:

2026-07-11T06:06:00Z UTC

Hits:

~1000

Detections:

HEUR:Worm.Script.Generic HEUR:Trojan-Downloader.Script.Generic Backdoor.MSIL.XWorm.c Backdoor.MSIL.XWorm.b Backdoor.MSIL.XWorm.a Trojan.PowerShell.Cobalt.sb Backdoor.Agent.TCP.C&C Trojan.MSIL.Crypt.sb HEUR:Trojan.Script.Generic PDM:Trojan.Win32.Generic Trojan.JS.SAgent.sb

Link:

https://opentip.kaspersky.com/1b578402eebfe063f3b62ffa7fae581831d3d6be08aebeba70de74aa6422dc40/results?tab=lookup

Result

Threat name:

XWorm

Detection:

malicious

Classification:

evad.troj.spyw.expl

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1939708

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

Bypasses PowerShell execution policy

C2 URLs / IPs found in malware configuration

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

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Injects a PE file into a foreign processes

Installs a global keyboard hook

JavaScript file contains suspicious strings

Joe Sandbox ML detected suspicious sample

JScript performs obfuscated calls to suspicious functions

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Potential obfuscated javascript found

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: 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)

Tries to steal Mail credentials (via file / registry access)

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 MSILLoadEncryptedAssembly

Yara detected Powershell decode and execute

Yara detected XWorm

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/1b578402eebfe063f3b62ffa7fae581831d3d6be08aebeba70de74aa6422dc40

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/1b578402eebfe063f3b62ffa7fae581831d3d6be08aebeba70de74aa6422dc40/

Verdict:

Malicious

Threat:

Family.XWORM

Link:

https://tip.neiki.dev/file/1b578402eebfe063f3b62ffa7fae581831d3d6be08aebeba70de74aa6422dc40

Threat name:

Script-JS.Backdoor.Xworm

Status:

Malicious

First seen:

2026-07-09 05:51:49 UTC

File Type:

Text (JavaScript)

AV detection:

10 of 24 (41.67%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=dnlyiaxox7qgh45wf75h7lsyday5hvv6bcxl5otq3z2kuzbc3raa._file

Result

Malware family:

xworm

Score:

10/10

Tags:

family:xworm collection defense_evasion discovery execution rat trojan

Link:

https://tria.ge/reports/260709-kd4neaf12z/

Behaviour

Kills process with taskkill

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

outlook_office_path

outlook_win_path

Command and Scripting Interpreter: JavaScript

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Accesses Microsoft Outlook profiles

Checks computer location settings

Command and Scripting Interpreter: PowerShell

Detect Xworm Payload

Family: Xworm

Malware Config

C2 Extraction:

133.18.165.80:7004

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/1b578402eebfe063f3b62ffa7fae581831d3d6be08aebeba70de74aa6422dc40

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:	CP_Script_Inject_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	Detects attempts to inject code into another process across PE, ELF, Mach-O binaries

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:	SUSP_obfuscated_JS_obfuscatorio Create hunting rule
Author:	@imp0rtp3
Description:	Detect JS obfuscation done by the js obfuscator (often malicious)
Reference:	https://obfuscator.io

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:	telebot_framework Create hunting rule
Author:	vietdx.mb

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:	Windows_Trojan_XWorm_b7d6eaa8 Create hunting rule
Author:	Elastic Security

Rule name:	win_xworm_bytestring Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects bytestring present in unobfuscated xworm

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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