MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6f2410fa257aa53031c1d39af39aad4157ca9316d2b566ffa59e3029ba66471. 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

Formbook

Vendor detections: 19

Intelligence 19 IOCs YARA 21 File information Comments 1

SHA256 hash:	b6f2410fa257aa53031c1d39af39aad4157ca9316d2b566ffa59e3029ba66471
SHA3-384 hash:	af6a3fd8f7be05ec46516a6d12b943ac3cb9e969be1c09ee86199e1aad07251ecfe62a54ee16c3684ca9ba00204bcb83
SHA1 hash:	64688047907612035d4d7ae3f70500c47c9798d1
MD5 hash:	ce840723993403ba97895697b4c36840
humanhash:	apart-stairway-missouri-jig
File name:	b6f2410fa257aa53031c1d39af39aad4157ca9316d2b566ffa59e3029ba66471.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	77'312 bytes
First seen:	2024-12-06 21:42:24 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep	1536:X3vLbaxILOCHfuyUVv6RbjATOGH7D2WGR64OBKal9YbdPUk:HT4IKCHfEVwbjATOGHsPOBKal+xU
TLSH	T19D735A287BE90114E1FFAFB55DF17212C77AFB636903D62F14D5028A0623984CE916F9
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	Chainskilabs
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

408

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

XwormLoader.exe

Verdict:

Malicious activity

Analysis date:

2024-12-06 20:16:30 UTC

Tags:

xworm evasion remote

Link:

https://app.any.run/tasks/9b68adb7-dc8b-4114-9c3d-d9990276c129

Note:

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

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67535b9d19fba9940b49b7e0

Tags:

asyncrat autorun gumen

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

Using the Windows Management Instrumentation requests

DNS request

Connection attempt

Sending an HTTP GET request

Creating a process with a hidden window

Launching a process

Creating a window

Adding an exclusion to Microsoft Defender

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

adaptive-context anti-vm asyncrat backdoor cmd explorer fingerprint hook keylogger lolbin obfuscated rat schtasks vbnet

Link:

https://www.filescan.io/uploads/67536fe797c7ee5cc52a71b4/reports/f4f4f273-27ae-4410-8966-bf314f86d48f/overview

Verdict:

Malicious

Labled as:

Jalapeno.Generic

Link:

https://www.hybrid-analysis.com/sample/b6f2410fa257aa53031c1d39af39aad4157ca9316d2b566ffa59e3029ba66471

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Malware family:

XWorm

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/6de9a9d5-cb9b-4160-9c6f-2017d3db1c22

Result

Threat name:

XWorm

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1570393

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

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Antivirus detection for URL or domain

Bypasses PowerShell execution policy

C2 URLs / IPs found in malware configuration

Check if machine is in data center or colocation facility

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

Found malware configuration

Loading BitLocker PowerShell Module

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Protects its processes via BreakOnTermination flag

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: Powershell Base64 Encoded MpPreference Cmdlet

Suricata IDS alerts for network traffic

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

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

Yara detected Generic Downloader

Yara detected XWorm

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/b6f2410fa257aa53031c1d39af39aad4157ca9316d2b566ffa59e3029ba66471

Detection:

xworm

Link:

https://mwdb.cert.pl/sample/b6f2410fa257aa53031c1d39af39aad4157ca9316d2b566ffa59e3029ba66471/

Threat name:

Win32.Exploit.Xworm

Status:

Malicious

First seen:

2024-12-06 20:16:30 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=w3zecd5ck6vfgay4du426onk2qkxzkjrnuvvm372lhrqfg5gmryq._file

Verdict:

malicious

Label(s):

xworm

Similar samples:

error

Formbook

Result

Malware family:

xworm

Score:

10/10

Tags:

family:xworm execution persistence rat trojan

Link:

https://tria.ge/reports/241206-1kwjdaypfw/

Behaviour

Scheduled Task/Job: Scheduled Task

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

Looks up external IP address via web service

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:

transfer-complexity.gl.at.ply.gg:20140

Verdict:

Malicious

Tags:

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

YARA:

win_mal_XWorm EXE_RAT_XWorm_April2024 MALWARE_Win_XWorm win_xworm_bytestring

Link:

https://app.threat.zone/submission/c4794d80-aacb-4714-a747-54618c4eff65

Unpacked files

SH256 hash:

b6f2410fa257aa53031c1d39af39aad4157ca9316d2b566ffa59e3029ba66471

MD5 hash:

ce840723993403ba97895697b4c36840

SHA1 hash:

64688047907612035d4d7ae3f70500c47c9798d1

Detections:

win_xworm_w0

Link:

https://www.unpac.me/results/f8bc9c7d-b62f-4b8a-9262-c7ef815de794/

Malware family:

XWorm

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b6f2410fa257/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/b6f2410fa257aa53031c1d39af39aad4157ca9316d2b566ffa59e3029ba66471

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:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

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:	pe_imphash Create hunting rule

Rule name:	RansomPyShield_Antiransomware Create hunting rule
Author:	XiAnzheng
Description:	Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)

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_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.

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

Comments

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commented on 2024-12-06 21:45:45 UTC

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

{
"sha256": "b6f2410fa257aa53031c1d39af39aad4157ca9316d2b566ffa59e3029ba66471",
"yara_possible_family": "xworm",
"key": "None",
"salt": "None",
"config": {
"vPmVX0zTi0ZavP": false,
"OL6kAtv20rUFUC": "null",
"AmT5MVjoP21sBR": "null",
"zguXzoP31AA63a": "null",
"MHpcu1jWRUPXbh": "null"
}
}