MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311. 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


AsyncRAT


Vendor detections: 15


Intelligence 15 IOCs YARA 10 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311
SHA3-384 hash: f68c4e81b5d02fa9d44509235a3e083ba2337de0bc2454fc4a42a5c2587217cf6c2336ee101a251701ad52848bd3e765
SHA1 hash: dc23006a97e7d5bc34eedec563432e63ed6a226a
MD5 hash: 109adf5a32829b151d536e30a81ee96b
humanhash: magnesium-rugby-colorado-enemy
File name:109adf5a32829b151d536e30a81ee96b
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:72'192 bytes
First seen:2024-04-01 13:15:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 1536:QeYZA06UMG73jWw9o5zeS6LQR9bAayaIMbckM6mfOWcNFOfab:QfZxfMGTFXS6LQR9bAaZbfsfOPMab
TLSH T1BF638D4C7BF00929D4FFABB609F26122CB38EB135513EA5F68C905D62623A9DCD017E5
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)
Reporter zbetcheckin
Tags:32 AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
274
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
Verdict:
Malicious activity
Analysis date:
2024-04-01 13:20:50 UTC
Tags:
xworm
Link:
https://app.any.run/tasks/4ce2b048-1696-4d3d-bbb4-f3b5966a99b3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Connection attempt
Moving a file to the Program Files subdirectory
Replacing files
Creating a process from a recently created file
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file
Launching a process
Creating a window
Searching for the 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:
80%
Tags:
anti-vm coinminer hook keylogger lolbin lolbin njrat schtasks schtasks
Link:
https://www.filescan.io/uploads/660ab39beda3192746173eb7/reports/5d54577e-710c-4de2-bb8a-03696769a342/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d157ffce-f91e-46e1-adaa-b025d8ebd10b
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1418167
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
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1418167 Sample: pSZnQqzOqX.exe Startdate: 01/04/2024 Architecture: WINDOWS Score: 100 41 involved-hurt.gl.at.ply.gg 2->41 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for URL or domain 2->49 51 9 other signatures 2->51 8 pSZnQqzOqX.exe 1 6 2->8         started        13 WindowsHealthSystem.exe 2->13         started        15 WindowsHealthSystem.exe 2->15         started        17 2 other processes 2->17 signatures3 process4 dnsIp5 43 involved-hurt.gl.at.ply.gg 147.185.221.18, 35238 SALSGIVERUS United States 8->43 39 C:\Users\user\...\WindowsHealthSystem.exe, PE32 8->39 dropped 53 Protects its processes via BreakOnTermination flag 8->53 55 Bypasses PowerShell execution policy 8->55 57 Uses schtasks.exe or at.exe to add and modify task schedules 8->57 59 Adds a directory exclusion to Windows Defender 8->59 19 powershell.exe 23 8->19         started        21 powershell.exe 23 8->21         started        23 powershell.exe 23 8->23         started        25 3 other processes 8->25 61 Antivirus detection for dropped file 13->61 63 Multi AV Scanner detection for dropped file 13->63 65 Machine Learning detection for dropped file 13->65 file6 signatures7 process8 process9 27 conhost.exe 19->27         started        29 conhost.exe 21->29         started        31 conhost.exe 23->31         started        33 WmiPrvSE.exe 25->33         started        35 conhost.exe 25->35         started        37 conhost.exe 25->37         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311
Detection:
xworm
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311/
Threat name:
ByteCode-MSIL.Backdoor.XWormRAT
Create hunting rule
Status:
Malicious
First seen:
2024-03-26 07:27:56 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
33 of 38 (86.84%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jooyta3z4xor2jqmc4dkubfkqjyjssbvuur3xa3jkbrnsledamiq._file
Verdict:
malicious
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm persistence rat trojan
Link:
https://tria.ge/reports/240401-qhxzbaeg3z/
Behaviour
Creates scheduled task(s)
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
Detect Xworm Payload
Xworm
Malware Config
C2 Extraction:
involved-hurt.gl.at.ply.gg:35238
Unpacked files
SH256 hash:
4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311
MD5 hash:
109adf5a32829b151d536e30a81ee96b
SHA1 hash:
dc23006a97e7d5bc34eedec563432e63ed6a226a
Detections:
MALWARE_Win_XWorm
Create hunting rule
win_mal_XWorm
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
MALWARE_Win_AsyncRAT
Create hunting rule
Link:
https://www.unpac.me/results/ba396326-20dd-42dc-a1d5-1949e6396ac7/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4b9d898379e5/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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: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.

Web download

AsyncRAT

Executable exe 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2797770/

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments


Avatar
zbet commented on 2024-04-01 13:15:16 UTC

url : hxxps://file-drop.cc/D/fde960/XClient.exe