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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b9d2f4b65f0943e31221ae1d937ea29d3da8b556dd6b7c4d7846444d7ba3001. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3b9d2f4b65f0943e31221ae1d937ea29d3da8b556dd6b7c4d7846444d7ba3001
SHA3-384 hash: 8badaca2d2134472c76a6cc441f5314329669a3af5c72a4419f1363a87a27a8fa8f9b19027d91c9360223c2bfd574e17
SHA1 hash: 299c5429117ec3f08d4fb3b89320faff41a37650
MD5 hash: 2b7fa55d8eef0e780403413bac4e44dc
humanhash: yellow-sierra-carbon-dakota
File name:Michael_Williams_Taxdocs_2026.pdf .js
Download: download sample
Signature XWorm
Create hunting rule
File size:26'891'920 bytes
First seen:2026-05-09 19:32:08 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 49152:ldUdqdYdjdKdBd2dMdEded3dGd5dFdSdzd6dMdZdYd9d0dLd9dxdSadodWdNd0dj:y
Threatray 244 similar samples on MalwareBazaar
TLSH T19247220D4F610AAF016DA16E13AC0F0F97EC9D48016AC5555BEFA99A8D1EE0CB7097FC
Magika javascript
Reporter smica83
Tags:js xworm

Intelligence

File Origin
# of uploads :
1
# of downloads :
167
Origin country :
HU HU
Vendor Threat Intelligence
No detections
Gathering data
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
encrypted masquerade obfuscated powershell repaired
Link:
https://www.filescan.io/uploads/69ff8bcb2fcb905ec28ae260/reports/d4e94b2c-7e5c-4020-9e67-78cae04cd0af/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/3b9d2f4b65f0943e31221ae1d937ea29d3da8b556dd6b7c4d7846444d7ba3001
Verdict:
Malicious
File Type:
js
First seen:
2026-05-11T11:16:00Z UTC
Last seen:
2026-05-11T11:22:00Z UTC
Hits:
~10
Detections:
Trojan.Win32.Garvi.a PDM:Trojan.Win32.Generic HEUR:Trojan.Script.Generic
Link:
https://opentip.kaspersky.com/3b9d2f4b65f0943e31221ae1d937ea29d3da8b556dd6b7c4d7846444d7ba3001/results?tab=lookup
Result
Threat name:
Kobalos, XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1911123
Signature
.NET source code contains very large array initializations
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Creates an autostart registry key pointing to binary in C:\Windows
Creates autostart registry keys with suspicious values (likely registry only malware)
Creates multiple autostart registry keys
Encrypted powershell cmdline option found
Found malware configuration
JavaScript file contains Antivirus product strings
JavaScript source code contains functionality to generate code involving a shell, file or stream
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Powershell drops PE file
Powershell is started from unusual location (likely to bypass HIPS)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Reads the Security eventlog
Reads the System eventlog
Sample uses string decryption to hide its real strings
Sigma detected: Potential Startup Shortcut Persistence Via PowerShell.EXE
Sigma detected: Potentially Suspicious PowerShell Child Processes
Sigma detected: PowerShell Base64 Encoded Invoke Keyword
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected Kobalos1
Yara detected Powershell download and execute
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1911123 Sample: Michael_Williams_Taxdocs_20... Startdate: 09/05/2026 Architecture: WINDOWS Score: 100 54 dd6qg4wn9ejpd.cloudfront.net 2->54 56 a37b157d-8823-4ec3-8447-919c9b91e4e3.usrfiles.com 2->56 58 2 other IPs or domains 2->58 68 Suricata IDS alerts for network traffic 2->68 70 Found malware configuration 2->70 72 Malicious sample detected (through community Yara rule) 2->72 74 17 other signatures 2->74 10 wscript.exe 1 1 2->10         started        13 OneDrive.exe 2->13         started        15 OneDrive.exe 2->15         started        17 5 other processes 2->17 signatures3 process4 signatures5 86 Wscript starts Powershell (via cmd or directly) 10->86 88 Bypasses PowerShell execution policy 10->88 90 Windows Scripting host queries suspicious COM object (likely to drop second stage) 10->90 100 2 other signatures 10->100 19 powershell.exe 19 47 10->19         started        92 Powershell is started from unusual location (likely to bypass HIPS) 13->92 94 Reads the Security eventlog 13->94 96 Reads the System eventlog 13->96 24 conhost.exe 13->24         started        26 conhost.exe 15->26         started        98 Encrypted powershell cmdline option found 17->98 28 powershell.exe 17->28         started        30 powershell.exe 17->30         started        32 powershell.exe 17->32         started        34 conhost.exe 17->34         started        process6 dnsIp7 60 209.99.186.200, 49708, 5959 ROYALEASNDE United States 19->60 62 dd6qg4wn9ejpd.cloudfront.net 108.138.106.21, 443, 49693, 49700 AMAZON-02US United States 19->62 64 2 other IPs or domains 19->64 50 C:\Users\user\AppData\Roaming\OneDrive.exe, PE32+ 19->50 dropped 52 C:\Users\user\AppData\...\OneDrive.lnk, MS 19->52 dropped 78 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 19->78 80 Creates autostart registry keys with suspicious values (likely registry only malware) 19->80 82 Creates multiple autostart registry keys 19->82 84 5 other signatures 19->84 36 conhost.exe 19->36         started        39 Acrobat.exe 58 19->39         started        41 schtasks.exe 19->41         started        file8 signatures9 process10 signatures11 76 Encrypted powershell cmdline option found 36->76 43 AcroCEF.exe 97 39->43         started        45 conhost.exe 41->45         started        process12 process13 47 AcroCEF.exe 43->47         started        dnsIp14 66 23.48.8.182, 443, 49704 AKAMAI-ASN1EU United States 47->66
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/3b9d2f4b65f0943e31221ae1d937ea29d3da8b556dd6b7c4d7846444d7ba3001
Gathering data
Gathering data
Verdict:
Malicious
Threat:
Family.XWORM
Link:
https://tip.neiki.dev/file/3b9d2f4b65f0943e31221ae1d937ea29d3da8b556dd6b7c4d7846444d7ba3001
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hoos6s3f6ckd4mjcdlq5sn7kfhj5vc2vnxllprgxqrsejv52gaaq._file
Verdict:
malicious
Label(s):
xworm
Create hunting rule
Similar samples:
42a08d1063980328bf1a1c5652c21a79e8b06d6abcac1881a0e8afa391b86c81
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744e8a3df80d94db5aaec3b7bdf630d680068dab28d65c07386bc82b44078bb9
XWorm
834fa1d96b7cf40739c4209a422a0698e1fae4c98b7072f0f7422c412a1a7cf1
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8bc544386ccb4eb630c4b8df83be99b28e8c0f1b45a17126178bcfb25ea668a6
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dbc31a4c65b7cee1bca3e93df0e2f3573c652a2af20ec93b11d7cd1a737ba2ab
XWorm
error
XWorm
+ 234 additional samples on MalwareBazaar
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm adware discovery execution persistence rat spyware trojan
Link:
https://tria.ge/reports/260509-x86gpscx2w/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies data under HKEY_USERS
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Browser Information Discovery
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Time Discovery
Drops file in Windows directory
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Drops startup file
Executes dropped EXE
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Detect Xworm Payload
Family: Xworm
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/3b9d2f4b65f0943e31221ae1d937ea29d3da8b556dd6b7c4d7846444d7ba3001

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: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:telebot_framework
Create hunting rule
Author:vietdx.mb

File information

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

Comments