MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a. 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: 15

Intelligence 15 IOCs YARA 14 File information Comments

SHA256 hash:	d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a
SHA3-384 hash:	475c5dece18aa793d22ff6c8e7948ad2253b99377591302a9363159002529b836283e652d45c318ff46446af0409bfc4
SHA1 hash:	7bde411bb0d7b6aa7a020266a61ce0d61ef0b362
MD5 hash:	90a6868b7ce2020387d453aa38668584
humanhash:	december-queen-aspen-indigo
File name:	Updater.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	58'880 bytes
First seen:	2024-06-29 20:32:35 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'751 x AgentTesla, 19'657 x Formbook, 12'248 x SnakeKeylogger)
ssdeep	1536:Liu7HktvnRa+lZrOY/FJ9N76iOCweg662XkhiYYtG:LiftnZCgFJ9NTOCql2XkUYYtG
Threatray	617 similar samples on MalwareBazaar
TLSH	T168437C497BD40621D9FFABB519B371050A71E9134C13D69E4CC88A9B1F37B818E41BEB
TrID	60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.8% (.SCR) Windows screen saver (13097/50/3) 8.7% (.EXE) Win64 Executable (generic) (10523/12/4) 5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):
dhash icon	089432b2e9ccc631 (1 x Formbook)
Reporter	Chainskilabs
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

380

Origin country :

Vendor Threat Intelligence

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=66806fc117db6c2841b24ec5win10vpnfull_triage

Tags:

Execution Generic Infostealer Network Stealth Trojan

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 process with a hidden window

Creating a file in the %AppData% directory

Launching a process

Creating a window

Enabling the 'hidden' option for recently created files

Creating a process from a recently created file

Creating a file

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

Setting a global event handler for the keyboard

Creating a file in the mass storage device

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Enabling threat expansion on mass storage devices

Verdict:

Malicious

Labled as:

Jalapeno.Generic

Link:

https://www.hybrid-analysis.com/sample/d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a

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/f2e6fcb9-3b65-4d7e-94c9-4b773c66bd81

Result

Threat name:

AsyncRAT, XWorm

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1464690

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

Bypasses PowerShell execution policy

C2 URLs / IPs found in malware configuration

Check if machine is in data center or colocation facility

Connects to many ports of the same IP (likely port scanning)

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

Contains functionality to log keystrokes (.Net Source)

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

Snort IDS alert 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 AsyncRAT

Yara detected Generic Downloader

Yara detected XWorm

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a

Detection:

xworm

Link:

https://mwdb.cert.pl/sample/d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a/

Threat name:

ByteCode-MSIL.Trojan.AsyncRAT

Status:

Malicious

First seen:

2024-06-29 19:35:35 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=2k2dbighj3zl3f6inwk4gx7jms6qb3ix2ltfik7dhtd4thpptvna._file

Verdict:

malicious

Formbook

1275f4387cfdc226a89156dab68429eaf3bc8dc0d7236c747468bd2fc2c45503

Formbook

32a333bb3c7ae28e1b197f94a4b16cc6f708b84e165ae55c3a109b57a3ed11c6

Formbook

5ad6806628708095957c45a7f728f941d9b436a25f3f0d2147274403fffd1045

Formbook

a788a5b401661ff1c3eedd21d679ccaf39a35cb1a5a814773b1e4ded48de890c

Formbook

d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a

Formbook

+ 607 additional samples on MalwareBazaar

Result

Malware family:

xworm

Score:

10/10

Tags:

family:xworm execution persistence rat trojan

Link:

https://tria.ge/reports/240629-zbt4hsvhrb/

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

Malware Config

C2 Extraction:

hardware-bands.gl.at.ply.gg:63257

Verdict:

Unknown

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/88b77297-3774-4de5-b854-b387a09157ba

Unpacked files

SH256 hash:

d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a

MD5 hash:

90a6868b7ce2020387d453aa38668584

SHA1 hash:

7bde411bb0d7b6aa7a020266a61ce0d61ef0b362

Detections:

XWorm

MALWARE_Win_XWorm

win_mal_XWorm

INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

MALWARE_Win_AsyncRAT

Link:

https://www.unpac.me/results/6f19d82e-8e00-4b10-bc24-5f26858bd1cc/

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/d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a

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:	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:	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_bytestring Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects bytestring present in unobfuscated xworm

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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