MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 adcff21b19c76c3d2146599e98f8e26283a8fdae5fb451faaa404c503c4855aa. 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: 17

Intelligence 17 IOCs YARA 18 File information Comments

SHA256 hash:	adcff21b19c76c3d2146599e98f8e26283a8fdae5fb451faaa404c503c4855aa
SHA3-384 hash:	d64e118d06cb5bf7dca2f1cb1cef8cecdd53b7e06b80b03648ed430807af1852358c97c9596baac5968f58777b5615f1
SHA1 hash:	5deb363ff9626b6071a50c66cbd35334d536dcb7
MD5 hash:	ac1e36a16ed1ef84df696f4128118c94
humanhash:	alpha-equal-east-louisiana
File name:	fatality.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	77'312 bytes
First seen:	2024-10-19 22:48:42 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	1536:/J9FzHsE81Rr+rPvcvbLao8aEgBjsm4C66UEO+evKf6:/Fz18rTbLa7aEusQYEO+evg6
TLSH	T172738D2877E54129F2FFAFB15DE13257CA39F7232902D25F30C5028B5A23A89CD915B9
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	aachum
Tags:	exe FormBook xworm

iamaachum

https://download.oxy.st/d/Gggi/

XWorm C2: 23.ip.gl.ply.gg:29091

Intelligence

File Origin

# of uploads :

# of downloads :

508

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

fatality.exe

Verdict:

Malicious activity

Analysis date:

2024-10-19 22:58:34 UTC

Tags:

evasion xworm

Link:

https://app.any.run/tasks/1fa3afac-1153-46d0-a0b2-3d791f5ee4bc

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-10019837-0

Win.Packed.Loveletter-10023052-0

Win.Dropper.Nanocore-10024427-0

Win.Packed.Loveletter-10024677-0

Win.Packed.Msilzilla-10024808-0

Win.Packed.Msilzilla-10026193-0

ditekSHen.MALWARE.Win.Trojan.AsyncRAT.UNOFFICIAL

Gathering data

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

Creating a window

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 asyncrat backdoor fingerprint hook keylogger rat vbnet

Link:

https://www.filescan.io/uploads/6714375fd875ce8b57d5fe61/reports/87606d64-c079-43fa-b2e1-2f226a83d9a7/overview

Verdict:

Malicious

Labled as:

Dump:Generic.Malware.SFL

Link:

https://www.hybrid-analysis.com/sample/adcff21b19c76c3d2146599e98f8e26283a8fdae5fb451faaa404c503c4855aa

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/bd016f8b-3e5b-433c-b92d-de4ec78c8a4c

Result

Threat name:

XWorm

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1537986

Signature

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

.NET source code contains potential unpacker

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Check if machine is in data center or colocation facility

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

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

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

Yara detected Generic Downloader

Yara detected XWorm

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/adcff21b19c76c3d2146599e98f8e26283a8fdae5fb451faaa404c503c4855aa

Detection:

xworm

Link:

https://mwdb.cert.pl/sample/adcff21b19c76c3d2146599e98f8e26283a8fdae5fb451faaa404c503c4855aa/

Threat name:

ByteCode-MSIL.Spyware.AsyncRAT

Status:

Malicious

First seen:

2024-10-19 22:49:06 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=vxh7egyzy5wd2ikglgpjr6hcmkb2r7nol62fd6vkibgfapcikwva._file

Verdict:

malicious

Label(s):

xworm

Similar samples:

error

Formbook

Result

Malware family:

xworm

Score:

10/10

Tags:

family:xworm rat trojan

Link:

https://tria.ge/reports/241019-2rnmsatenf/

Behaviour

Suspicious use of AdjustPrivilegeToken

Looks up external IP address via web service

Detect Xworm Payload

Xworm

Malware Config

C2 Extraction:

23.ip.gl.ply.gg:29091

Verdict:

Malicious

Tags:

rat xworm

YARA:

win_mal_XWorm EXE_RAT_XWorm_April2024 MALWARE_Win_XWorm win_xworm_bytestring

Link:

https://app.threat.zone/submission/b7b9d01f-255a-473b-b714-a80dc32e692d

Unpacked files

SH256 hash:

adcff21b19c76c3d2146599e98f8e26283a8fdae5fb451faaa404c503c4855aa

MD5 hash:

ac1e36a16ed1ef84df696f4128118c94

SHA1 hash:

5deb363ff9626b6071a50c66cbd35334d536dcb7

Detections:

win_xworm_w0

Link:

https://www.unpac.me/results/18ee8bcf-3946-4f53-adbf-aff416774b33/

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/adcff21b19c7/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/adcff21b19c76c3d2146599e98f8e26283a8fdae5fb451faaa404c503c4855aa

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:	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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Formbook

exe adcff21b19c76c3d2146599e98f8e26283a8fdae5fb451faaa404c503c4855aa

(this sample)

Link

https://tria.ge/241019-2nh8wswajm

Delivery method

Distributed via web download

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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