MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99fa7aa6955981c6018c0da6d71164a00f53b13ae0aa78597aed99524aa7b40d. 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: 12


Intelligence 12 IOCs 1 YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99fa7aa6955981c6018c0da6d71164a00f53b13ae0aa78597aed99524aa7b40d
SHA3-384 hash: 5dcaf470d026c11ff1760c9e801a7db22f04f64049832bc38760f5e66582b8dc1fd40c360c85055cff28ffac20827aa4
SHA1 hash: fedb119939e9d541b4438b8066dc10b4a1184235
MD5 hash: 57190b0377e2155334443342c85f404e
humanhash: don-ceiling-romeo-arizona
File name:Purchase list and specificationJPEG File.vbs
Download: download sample
Signature XWorm
Create hunting rule
File size:176'311 bytes
First seen:2025-10-21 01:05:16 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 3072:veAicjpUjeRclobO8VWrJpOw/tUm0UqQ+zbxrtYT8LQzN:vePCKlobzAFJ+Q+zbxryT8LQJ
TLSH T16004D52EB274B9E4431A23E3E8192986205F8553C37BCDBC9C66B8770CD7148A7267D7
Magika vba
Reporter abuse_ch
Tags:vbs xworm


Avatar
abuse_ch
XWorm C2:
103.83.86.27:1122

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
103.83.86.27:1122 https://threatfox.abuse.ch/ioc/1618858/

Intelligence

File Origin
# of uploads :
1
# of downloads :
82
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
XWorm
Create hunting rule
Link:
https://www.capesandbox.com/analysis/33542/
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68f6dc743edd081eba403267
Tags:
obfuscate xtreme shell
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/99fa7aa6955981c6018c0da6d71164a00f53b13ae0aa78597aed99524aa7b40d
Verdict:
Malicious
File Type:
vbs
First seen:
2025-10-20T20:10:00Z UTC
Last seen:
2025-10-22T22:12:00Z UTC
Hits:
~100
Detections:
Backdoor.Agent.TCP.C&C Trojan-Downloader.JS.Cryptoload.sb HEUR:Trojan-Downloader.Script.Generic Trojan.BAT.Agent.sb PDM:Trojan.Win32.Generic Trojan.PowerShell.AmsiBypass.sb HEUR:Trojan.VBS.SAgent.gen HEUR:Trojan.BAT.Tesre.gen Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic HEUR:Trojan.PowerShell.Tesre.sb
Link:
https://opentip.kaspersky.com/99fa7aa6955981c6018c0da6d71164a00f53b13ae0aa78597aed99524aa7b40d/results?tab=lookup
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1798772
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Creates processes via WMI
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
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: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential Startup Shortcut Persistence Via PowerShell.EXE
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded IEX Cmdlet
Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Uses the Telegram API (likely for C&C communication)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Yara detected Powershell decode and execute
Yara detected Telegram RAT
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1798772 Sample: Purchase list and specifica... Startdate: 21/10/2025 Architecture: WINDOWS Score: 100 48 api.telegram.org 2->48 60 Suricata IDS alerts for network traffic 2->60 62 Found malware configuration 2->62 64 Malicious sample detected (through community Yara rule) 2->64 68 15 other signatures 2->68 10 wscript.exe 1 2->10         started        14 XWormClient.exe 25 2->14         started        16 XWormClient.exe 25 2->16         started        18 svchost.exe 1 1 2->18         started        signatures3 66 Uses the Telegram API (likely for C&C communication) 48->66 process4 dnsIp5 46 C:\Users\Public\MeadowArea.bat, ASCII 10->46 dropped 82 Wscript starts Powershell (via cmd or directly) 10->82 84 Windows Scripting host queries suspicious COM object (likely to drop second stage) 10->84 86 Suspicious execution chain found 10->86 88 Creates processes via WMI 10->88 21 cmd.exe 1 10->21         started        90 Powershell is started from unusual location (likely to bypass HIPS) 14->90 92 Reads the Security eventlog 14->92 94 Reads the System eventlog 14->94 24 conhost.exe 14->24         started        26 conhost.exe 16->26         started        50 127.0.0.1 unknown unknown 18->50 file6 signatures7 process8 signatures9 70 Suspicious powershell command line found 21->70 72 Wscript starts Powershell (via cmd or directly) 21->72 28 cmd.exe 1 21->28         started        30 conhost.exe 21->30         started        process10 process11 32 cmd.exe 2 28->32         started        signatures12 56 Suspicious powershell command line found 32->56 58 Wscript starts Powershell (via cmd or directly) 32->58 35 powershell.exe 16 32 32->35         started        40 conhost.exe 32->40         started        process13 dnsIp14 52 103.83.86.27, 1122, 49722 GELEXIY-AS-INGelexiyCabNetIN India 35->52 54 api.telegram.org 149.154.167.220, 443, 49721 TELEGRAMRU United Kingdom 35->54 42 C:\Users\user\AppData\...\XWormClient.exe, PE32+ 35->42 dropped 44 C:\Users\user\AppData\...\XWormClient.lnk, MS 35->44 dropped 74 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 35->74 76 Found suspicious powershell code related to unpacking or dynamic code loading 35->76 78 Loading BitLocker PowerShell Module 35->78 80 Powershell drops PE file 35->80 file15 signatures16
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/99fa7aa6955981c6018c0da6d71164a00f53b13ae0aa78597aed99524aa7b40d
Verdict:
Malware
YARA:
2 match(es)
Tags:
Base64 Block Contains Base64 Block DeObfuscated PowerShell Scripting.FileSystemObject VBScript
Link:
https://app.malva.re/file/57190b0377e2155334443342c85f404e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/99fa7aa6955981c6018c0da6d71164a00f53b13ae0aa78597aed99524aa7b40d/
Verdict:
Malicious
Threat:
Family.XWORM
Link:
https://tip.neiki.dev/file/99fa7aa6955981c6018c0da6d71164a00f53b13ae0aa78597aed99524aa7b40d
Threat name:
Script-WScript.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2025-10-21 01:05:54 UTC
File Type:
Text
AV detection:
7 of 24 (29.17%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=th5hvjuvlga4mammbwtnoeleuahvhmj24cvhqwl25wmvesvhwqgq._file
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm execution persistence rat trojan
Link:
https://tria.ge/reports/251021-bfy19szqbr/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Adds Run key to start application
Command and Scripting Interpreter: PowerShell
Drops startup file
Executes dropped EXE
Badlisted process makes network request
Detect Xworm Payload
Process spawned unexpected child process
Xworm
Xworm family
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/99fa7aa6955981c6018c0da6d71164a00f53b13ae0aa78597aed99524aa7b40d

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)

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/33542/

Comments