MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a436f5cc5aa97eaa0bf58e171b790148501f83eca24a138bbab63dafd865073a. 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

njrat

Vendor detections: 17

Intelligence 17 IOCs YARA 17 File information Comments

SHA256 hash:	a436f5cc5aa97eaa0bf58e171b790148501f83eca24a138bbab63dafd865073a
SHA3-384 hash:	bd20ffee2b34fde751ea54b429791e0fe86e2cd9ce1ace6a9cfb2818358dbef714a4a4e722b9e7c5faa8fbc478114027
SHA1 hash:	36535225858400c582c609f58459af3b9b6843d6
MD5 hash:	4503eaa43a29f0f223259e86cc8b846d
humanhash:	mirror-four-friend-california
File name:	XClient.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	37'376 bytes
First seen:	2025-03-25 22:50:59 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (49'239 x AgentTesla, 20'491 x Formbook, 12'372 x SnakeKeylogger)
ssdeep	768:RTTmbHaZVJ0YGsYYfOmfkIzFk9Y4O/hgn/FQ:RTTwaZV62f3fkyFk9Y4O/m9Q
Threatray	1'395 similar samples on MalwareBazaar
TLSH	T1C4F23B4877918321D5EEAFF55EB2A1450275F6074D13EB5E0CD88ADA3B73AC24B103EA
TrID	67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 9.7% (.EXE) Win64 Executable (generic) (10522/11/4) 6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika	pebin
Reporter	BastianHein
Tags:	exe NjRAT

Intelligence

File Origin

# of uploads :

# of downloads :

492

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

XClient.exe

Verdict:

Malicious activity

Analysis date:

2025-03-25 22:15:18 UTC

Tags:

evasion xworm

Link:

https://app.any.run/tasks/1938e0f2-f9ae-4233-ace2-0351263d20d8

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

Win.Packed.njRAT-10002074-1

Win.Packed.Msilzilla-10002982-0

Win.Packed.Msilzilla-10019837-0

Win.Packed.Loveletter-10023052-0

Win.Packed.Loveletter-10024677-0

Win.Packed.Msilzilla-10024808-0

Win.Packed.Msilzilla-10026193-0

ditekSHen.MALWARE.Win.Trojan.AsyncRAT.UNOFFICIAL

ditekSHen.MALWARE.Win.XWorm.UNOFFICIAL

Verdict:

Malicious

Score:

97.4%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67e32af5cb6d38a89f3e2bdf

Tags:

asyncrat dropper micro remo

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Using the Windows Management Instrumentation requests

DNS request

Connection attempt

Sending an HTTP GET request

Creating a file

Launching a process

Creating a process with a hidden window

Connection attempt to an infection source

Creating a process from a recently created file

Creating a window

Your mouse was active while VM was running

Searching for the window

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Query of malicious DNS domain

Sending a TCP request to an infection source

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm asyncrat backdoor fingerprint lolbin njrat obfuscated packed packer_detected rat reconnaissance schtasks vbnet xworm

Link:

https://www.filescan.io/uploads/67e33369631830704a86e06d/reports/c20a7202-1e18-4955-8ab7-241e80b2fba7/overview

Verdict:

Malicious

Labled as:

Genie.8DN.Generic

Link:

https://www.hybrid-analysis.com/sample/a436f5cc5aa97eaa0bf58e171b790148501f83eca24a138bbab63dafd865073a

Malware family:

XWorm

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/3323957e-7d35-4bb8-bcc2-b1d20a9b0615

Result

Threat name:

AsyncRAT, SugarDump, XWorm

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1648568

Signature

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

.NET source code contains potential unpacker

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Check if machine is in data center or colocation facility

Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))

Contains functionality to capture screen (.Net source)

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

Creates autostart registry keys with suspicious names

Drops PE files to the user root directory

Found malware configuration

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

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: Execution from Suspicious Folder

Sigma detected: New RUN Key Pointing to Suspicious Folder

Suricata IDS alerts for network traffic

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

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

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

Yara detected AsyncRAT

Yara detected SugarDump

Yara detected XWorm

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a436f5cc5aa97eaa0bf58e171b790148501f83eca24a138bbab63dafd865073a

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a436f5cc5aa97eaa0bf58e171b790148501f83eca24a138bbab63dafd865073a/

Threat name:

ByteCode-MSIL.Spyware.AsyncRAT

Status:

Malicious

First seen:

2025-03-25 22:15:19 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

23 of 24 (95.83%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=uq3pltc2vf7kuc7vrylrw6ibjbib7a7mujfbhc52wy627wdfa45a._file

Verdict:

malicious

Label(s):

xworm

njrat

495c76a1f5b27c1d1dd4c02a2d6b14c33f02f7fff1d4720e9f751055f9dd9a51

njrat

9bc496ac0d90cd6e804a1075d59967c809fc88ec67c844f8cdeb47153588dbb9

njrat

a436f5cc5aa97eaa0bf58e171b790148501f83eca24a138bbab63dafd865073a

njrat

d545f5b27e90abc54cf5a37c35e866c08336a500cecd95e8267c0c729a6b9bbc

njrat

error

njrat

+ 1'385 additional samples on MalwareBazaar

Result

Malware family:

xworm

Score:

10/10

Tags:

family:xworm rat trojan

Link:

https://tria.ge/reports/250325-2sxbbaxmy6/

Behaviour

Suspicious use of AdjustPrivilegeToken

Looks up external IP address via web service

Detect Xworm Payload

Xworm

Xworm family

Malware Config

C2 Extraction:

hour-adidas.gl.at.ply.gg:32878

Verdict:

Malicious

Tags:

rat xworm Win.Packed.njRAT-10002074-1 external_ip_lookup

YARA:

win_mal_XWorm EXE_RAT_XWorm_April2024 MALWARE_Win_XWorm

Link:

https://app.threat.zone/submission/59ca25cf-38bf-4082-b853-db09ae579435

Unpacked files

SH256 hash:

a436f5cc5aa97eaa0bf58e171b790148501f83eca24a138bbab63dafd865073a

MD5 hash:

4503eaa43a29f0f223259e86cc8b846d

SHA1 hash:

36535225858400c582c609f58459af3b9b6843d6

Detections:

win_xworm_w0

XWorm

Link:

https://www.unpac.me/results/48569210-9ba2-4b3d-91fa-51bcf29add8b/

Malware family:

DCRat

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a436f5cc5aa9/report/overview.html

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/a436f5cc5aa97eaa0bf58e171b790148501f83eca24a138bbab63dafd865073a

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:	DebuggerCheck__RemoteAPI Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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

Rule name:	EXE_RAT_XWorm_April2024 Create hunting rule
Author:	Yashraj Solanki - Cyber Threat Intelligence Analyst at Bridewell

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 (http://www.lukeacha.com)
Description:	Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables

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

Rule name:	xworm Create hunting rule
Author:	jeFF0Falltrades

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

Rule name:	xworm_kingrat 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

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

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