MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f83e8dc1abb15f1aacfa5f9909f51b8e944eeed29ce63049b00d0dd2477c4dbd. 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

XWorm

Vendor detections: 19

Intelligence 19 IOCs 1 YARA 17 File information Comments 1

SHA256 hash:	f83e8dc1abb15f1aacfa5f9909f51b8e944eeed29ce63049b00d0dd2477c4dbd
SHA3-384 hash:	80440c194e439ff90bfd9cda7ee094f201f4f78e95c938be5260190acb15a3ad592156d2c16e05f48c6627ce6cd4ce28
SHA1 hash:	8aa4cf92aef088ab09b4bcee5bf642642fbe1f88
MD5 hash:	38d99377ea2c9adaf685167c6dc6a70d
humanhash:	stream-wolfram-uncle-oven
File name:	RuntimeBroker.exe
Download:	download sample
Signature	XWorm Create hunting rule
File size:	83'968 bytes
First seen:	2025-08-12 04:40:34 UTC
Last seen:	2025-08-13 00:00:33 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	1536:wwkqvi2956j3BpRj+EfolffLlS9byq/wrCegmaksOI610GY2SSO8tr5R1uS:wwkqvfE3Vj+8o5Q9by/gm1sOjUSOMrL
TLSH	T18F837D1C3BE54529F4FFAFB05AE17266C636B7535903DA5F24D8028A0723A88CD816F6
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	abuse_ch
Tags:	exe xworm

abuse_ch

XWorm C2:
157.97.11.134:5500

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOC	ThreatFox Reference
157.97.11.134:5500	https://threatfox.abuse.ch/ioc/1567589/

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

RuntimeBroker.exe

Verdict:

Malicious activity

Analysis date:

2025-08-12 04:41:54 UTC

Tags:

auto-reg auto-startup crypto-regex xworm

Link:

https://app.any.run/tasks/03c21de9-9641-459f-a5fb-aaac84a816ad

Note:

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

Detection:

XWorm

Link:

https://www.capesandbox.com/analysis/20273/

Detection(s):

Win.Packed.njRAT-10002074-1

Win.Packed.Msilzilla-10002982-0

Win.Packed.Msilzilla-10019837-0

Win.Packed.Loveletter-10023052-0

Win.Dropper.Nanocore-10024427-0

Win.Packed.Loveletter-10024677-0

Win.Packed.Msilzilla-10026193-0

Win.Malware.Deepscan-10028866-0

ditekSHen.MALWARE.Win.Trojan.AsyncRAT.UNOFFICIAL

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=689ac5d7c633abe3908e25b4

Tags:

asyncrat autorun

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Creating a process with a hidden window

Creating a file

Launching a process

Creating a window

Connection attempt

Creating a process from a recently created file

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

Setting a global event handler for the keyboard

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm base64 fingerprint lolbin obfuscated obfuscated reconnaissance schtasks stealer vbnet xworm

Link:

https://www.filescan.io/uploads/689ac5f29ef4d2ff7cf79c56/reports/64ca8f25-dcee-4761-b6c4-d4492356e9aa/overview

Verdict:

Malicious

Labled as:

Jalapeno.Generic

Link:

https://www.hybrid-analysis.com/sample/f83e8dc1abb15f1aacfa5f9909f51b8e944eeed29ce63049b00d0dd2477c4dbd

Malware family:

XWorm

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/a925fa13-8757-4c49-b9dc-5ac7f5172db6

Result

Threat name:

XWorm

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1755034

Signature

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

.NET source code contains potential unpacker

Adds a directory exclusion to Windows Defender

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Bypasses PowerShell execution policy

C2 URLs / IPs found in malware configuration

Creates autostart registry keys with suspicious names

Drops PE files to the user root directory

Found malware configuration

Joe Sandbox ML detected suspicious sample

Loading BitLocker PowerShell Module

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: System File Execution Location Anomaly

Sigma detected: Windows Binaries Write Suspicious Extensions

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

Yara detected XWorm

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/f83e8dc1abb15f1aacfa5f9909f51b8e944eeed29ce63049b00d0dd2477c4dbd

Verdict:

inconclusive

YARA:

13 match(es)

Tags:

.Net Executable PE (Portable Executable) SOS: 0.95 Win 32 Exe x86

Link:

https://app.malva.re/file/38d99377ea2c9adaf685167c6dc6a70d

Detection:

xworm

Link:

https://mwdb.cert.pl/sample/f83e8dc1abb15f1aacfa5f9909f51b8e944eeed29ce63049b00d0dd2477c4dbd/

Verdict:

Malicious

Threat:

Family.XWORM

Link:

https://tip.neiki.dev/file/f83e8dc1abb15f1aacfa5f9909f51b8e944eeed29ce63049b00d0dd2477c4dbd

Threat name:

Win32.Backdoor.XWormRAT

Status:

Malicious

First seen:

2025-08-12 04:18:14 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

32 of 38 (84.21%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=7a7i3qnlwfprvlh2l6mqt5i3r2ke53wstttdasnqbug5er34jw6q._file

Result

Malware family:

xworm

Score:

10/10

Tags:

family:xworm execution persistence rat trojan

Link:

https://tria.ge/reports/250812-fa9b9sdq9z/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Enumerates physical storage devices

Adds Run key to start application

Checks computer location settings

Drops startup file

Executes dropped EXE

Command and Scripting Interpreter: PowerShell

Detect Xworm Payload

Xworm

Xworm family

Malware Config

C2 Extraction:

157.97.11.134:5500

Verdict:

Malicious

Tags:

rat xworm Win.Packed.njRAT-10002074-1

YARA:

MALWARE_Win_XWorm win_mal_XWorm win_xworm_bytestring

Link:

https://app.threat.zone/submission/1b7f5084-dce0-48ae-a7ea-df8f6faef30a

Unpacked files

SH256 hash:

f83e8dc1abb15f1aacfa5f9909f51b8e944eeed29ce63049b00d0dd2477c4dbd

MD5 hash:

38d99377ea2c9adaf685167c6dc6a70d

SHA1 hash:

8aa4cf92aef088ab09b4bcee5bf642642fbe1f88

Detections:

win_xworm_w0

Link:

https://www.unpac.me/results/66c6e9aa-a180-4512-b0d7-acb43a58dcd7/

Malware family:

XWorm

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/f83e8dc1abb1/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/f83e8dc1abb15f1aacfa5f9909f51b8e944eeed29ce63049b00d0dd2477c4dbd

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:	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 (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:	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:	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:	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

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.

Web download

XWorm

exe f83e8dc1abb15f1aacfa5f9909f51b8e944eeed29ce63049b00d0dd2477c4dbd

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3596156/

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/20273/

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

Comments

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commented on 2025-08-12 04:45:54 UTC

RAT King Parser (https://github.com/jeFF0Falltrades/rat_king_parser) Output:

{
"sha256": "f83e8dc1abb15f1aacfa5f9909f51b8e944eeed29ce63049b00d0dd2477c4dbd",
"yara_possible_family": "xworm",
"key": "7a2f20d14a706c5f2f5513cc92ffdb7a2f20d14a706c5f2f5513cc92ffdbfd00",
"salt": "None",
"config": {
"obfuscated_key_1": "157.97.11.134",
"obfuscated_key_2": "5500",
"obfuscated_key_3": "<666666>",
"obfuscated_key_4": "<Xwormmm>",
"obfuscated_key_5": "1",
"obfuscated_key_6": "XWorm V6.0",
"obfuscated_key_7": "USB.exe",
"obfuscated_key_8": "%Userprofile%",
"obfuscated_key_9": "Windows Start-Up Application.exe",
"obfuscated_key_10": "QApAcmQe1dhiP5wh",
"obfuscated_key_11": "\\Log.tmp",
"obfuscated_key_12": "1JJqnLGpzASqJZcjsA1KugWxC7f9nzmXgN",
"obfuscated_key_13": "0xdfff37dd87b38f89558fe6448cf157d2f5ea6f8f",
"obfuscated_key_14": "TABkvKaCF7cuDAgm1g8yaagNazusqZTZmR"
}
}