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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4d8ce31d67d6109e997611328bb0c874b73b7b1e611f367a44be4057a70d7e28. 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: 7


Intelligence 7 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4d8ce31d67d6109e997611328bb0c874b73b7b1e611f367a44be4057a70d7e28
SHA3-384 hash: a9883e35cda40450cb35fa83815ab5fb01aba1f760c9bad1b1d1e6e92176138aebb082e67496843f4903ee4cc0a70293
SHA1 hash: 51c6c61a3ef8ebbd41461640f2987756ec4d9e48
MD5 hash: 7b7994d1312861980061c3c93fd45e2e
humanhash: ack-football-tennessee-bakerloo
File name:Comprovante-Itau-2026-05-20.vbs
Download: download sample
Signature XWorm
Create hunting rule
File size:463'190 bytes
First seen:2026-05-22 01:49:10 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:application/octet-stream
ssdeep 12288:7+7D98Jy4YuRib0HhRH5WV4bvLL+XhOgLtY:o9f4YurSV4bzaDLtY
TLSH T14CA41225A905EFCD8A241597D6442CCA19808FEA407DD3F07EDBD99BF291E182D780FB
Magika vba
Reporter johnk3r
Tags:vbs xworm

Intelligence

File Origin
# of uploads :
1
# of downloads :
55
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a0fb67898070a72bb9ca328
Tags:
obfuscate vmdetect shell sage
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm fingerprint
Link:
https://www.filescan.io/uploads/6a101154efbd399b39c5935c/reports/d28292cb-e898-4d61-afb6-413480794d62/overview
Verdict:
Malicious
File Type:
vbs
First seen:
2026-05-20T12:54:00Z UTC
Last seen:
2026-05-23T19:02:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/4d8ce31d67d6109e997611328bb0c874b73b7b1e611f367a44be4057a70d7e28/results?tab=lookup
Result
Threat name:
DonutLoader, XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1917540
Signature
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects code into the Windows Explorer (explorer.exe)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell is started from unusual location (likely to bypass HIPS)
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: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Powershell Decrypt And Execute Base64 Data
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
Unusual module load detection (module proxying)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected DonutLoader
Yara detected Powershell decode and execute
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1917540 Sample: Comprovante-Itau-2026-05-20.vbs Startdate: 22/05/2026 Architecture: WINDOWS Score: 100 70 k4linkd2.ddns.net 2->70 82 Found malware configuration 2->82 84 Malicious sample detected (through community Yara rule) 2->84 86 Multi AV Scanner detection for submitted file 2->86 90 13 other signatures 2->90 11 wscript.exe 3 2->11         started        15 wscript.exe 2->15         started        signatures3 88 Uses dynamic DNS services 70->88 process4 file5 66 C:\Users\user\...\iwVSfr4YBzgRHiqH.bat, DOS 11->66 dropped 100 VBScript performs obfuscated calls to suspicious functions 11->100 102 Wscript starts Powershell (via cmd or directly) 11->102 104 Windows Scripting host queries suspicious COM object (likely to drop second stage) 11->104 106 Suspicious execution chain found 11->106 17 cmd.exe 1 11->17         started        108 WScript reads language and country specific registry keys (likely country aware script) 15->108 20 cmd.exe 15->20         started        signatures6 process7 signatures8 74 Suspicious powershell command line found 17->74 76 Wscript starts Powershell (via cmd or directly) 17->76 78 Obfuscated command line found 17->78 80 Bypasses PowerShell execution policy 17->80 22 powershell.exe 12 17->22         started        24 powershell.exe 18 17->24         started        27 powershell.exe 15 17->27         started        29 conhost.exe 17->29         started        31 powershell.exe 20->31         started        33 powershell.exe 20->33         started        35 conhost.exe 20->35         started        37 powershell.exe 20->37         started        process9 signatures10 39 cmd.exe 1 22->39         started        92 Loading BitLocker PowerShell Module 24->92 94 Hides that the sample has been downloaded from the Internet (zone.identifier) 27->94 42 cmd.exe 33->42         started        process11 file12 62 C:\Users\user\Downloads\jzX.exe, PE32+ 39->62 dropped 64 C:\ProgramData\IntelDriver\.cmd, DOS 39->64 dropped 44 jzX.exe 39->44         started        48 jzX.exe 13 39->48         started        50 jzX.exe 39->50         started        54 5 other processes 39->54 52 conhost.exe 42->52         started        process13 file14 68 C:\Users\user\AppData\Roaming\FFJ.xml, XML 44->68 dropped 110 Injects code into the Windows Explorer (explorer.exe) 44->110 112 Writes to foreign memory regions 44->112 114 Powershell is started from unusual location (likely to bypass HIPS) 44->114 116 Creates a thread in another existing process (thread injection) 44->116 56 explorer.exe 44->56 injected 60 schtasks.exe 44->60         started        118 Uses schtasks.exe or at.exe to add and modify task schedules 48->118 120 Found suspicious powershell code related to unpacking or dynamic code loading 48->120 122 Reads the Security eventlog 48->122 124 Reads the System eventlog 50->124 126 Loading BitLocker PowerShell Module 54->126 signatures15 process16 dnsIp17 72 k4linkd2.ddns.net 45.146.81.76, 49699, 49700, 49701 BBHostLTDABR Brazil 56->72 96 System process connects to network (likely due to code injection or exploit) 56->96 98 Unusual module load detection (module proxying) 56->98 signatures18
Gathering data
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jwgoghlh2yij5glwcezixmgios3tw6y6meptm6sexzafpjynpyua._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/260522-j7ka7afz5p/
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Checks computer location settings
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/4d8ce31d67d6109e997611328bb0c874b73b7b1e611f367a44be4057a70d7e28

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:detect_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique

File information

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

Comments