MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b452f866d578784aa6a22272de836476bc9aa165ffb027f43787ed07bdb1a750. 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


MassLogger


Vendor detections: 8


Intelligence 8 IOCs YARA 1 File information Comments
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SHA256 hash: b452f866d578784aa6a22272de836476bc9aa165ffb027f43787ed07bdb1a750
SHA3-384 hash: b5c55b024b5580e007755994c095a951b72c7bce05ba43b45629d97f2bb3a9ec2753e45e65e64f047b93e7747b21d26f
SHA1 hash: 28c93caf1405d9998316507e4b540b56bfcbe788
MD5 hash: 16aa0c3d82c3175f116eafced1e33b25
humanhash: uniform-bulldog-low-october
File name:LOI.vbs
Download: download sample
Signature MassLogger
Create hunting rule
File size:79'953 bytes
First seen:2025-01-30 13:48:45 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 1536:x9b3c97qF9aDp64WQwrKw6SEFP+cdHmkzDcr7qwX3hB/dLeWZ8QSTI:xt3Yq9Mp64aKtS0P+cdHmkz4rewX3hz/
TLSH T1AE732DECDB6D1F6C3B7774F3B49A91A0C299C8E6C09846BB91DCA8F41C75B1906EC181
Magika vba
Reporter James_inthe_box
Tags:MassLogger vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
129
Origin country :
US US
Vendor Threat Intelligence
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=679b842839cd5095f12c61fe
Tags:
dropper shell sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm fingerprint monero obfuscated powershell
Link:
https://www.filescan.io/uploads/679b8356addd15cb0b17f52a/reports/ee802d67-b0e3-4478-a694-824bc9f9af33/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/b452f866d578784aa6a22272de836476bc9aa165ffb027f43787ed07bdb1a750
Result
Verdict:
MALICIOUS
Details
Base64 Encoded Powershell Directives
Detected one or more base64 encoded Powershell directives.
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1603068
Signature
.NET source code contains a sample name check
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Bypasses PowerShell execution policy
Contains functionality to log keystrokes (.Net Source)
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)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded Invoke Keyword
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Tries to detect the country of the analysis system (by using the IP)
Tries to harvest and steal browser information (history, passwords, etc)
Uses cmd line tools excessively to alter registry or file data
Uses known network protocols on non-standard ports
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected MassLogger RAT
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1603068 Sample: LOI.vbs Startdate: 30/01/2025 Architecture: WINDOWS Score: 100 89 reallyfreegeoip.org 2->89 91 checkip.dyndns.org 2->91 93 2 other IPs or domains 2->93 95 Found malware configuration 2->95 97 Malicious sample detected (through community Yara rule) 2->97 99 Yara detected Telegram RAT 2->99 103 15 other signatures 2->103 11 wscript.exe 2 2->11         started        15 cmd.exe 2->15         started        17 powershell.exe 25 2->17         started        19 4 other processes 2->19 signatures3 101 Tries to detect the country of the analysis system (by using the IP) 89->101 process4 file5 79 C:\Users\user\AppData\Local\Temp\c.bat, ASCII 11->79 dropped 127 VBScript performs obfuscated calls to suspicious functions 11->127 129 Wscript starts Powershell (via cmd or directly) 11->129 131 Windows Scripting host queries suspicious COM object (likely to drop second stage) 11->131 133 Suspicious execution chain found 11->133 21 cmd.exe 1 11->21         started        24 cmd.exe 15->24         started        26 conhost.exe 15->26         started        135 Loading BitLocker PowerShell Module 17->135 28 conhost.exe 17->28         started        30 conhost.exe 19->30         started        32 conhost.exe 19->32         started        34 conhost.exe 19->34         started        signatures6 process7 signatures8 119 Suspicious powershell command line found 21->119 121 Wscript starts Powershell (via cmd or directly) 21->121 123 Uses cmd line tools excessively to alter registry or file data 21->123 125 Bypasses PowerShell execution policy 21->125 36 cmd.exe 2 21->36         started        39 conhost.exe 21->39         started        41 powershell.exe 24->41         started        43 powershell.exe 24->43         started        45 conhost.exe 24->45         started        47 reg.exe 24->47         started        process9 signatures10 109 Suspicious powershell command line found 36->109 111 Wscript starts Powershell (via cmd or directly) 36->111 113 Uses cmd line tools excessively to alter registry or file data 36->113 49 powershell.exe 14 35 36->49         started        54 powershell.exe 36->54         started        56 conhost.exe 36->56         started        58 reg.exe 36->58         started        115 Loading BitLocker PowerShell Module 41->115 60 csc.exe 41->60         started        62 cmstp.exe 41->62         started        117 Tries to harvest and steal browser information (history, passwords, etc) 43->117 process11 dnsIp12 81 0x0.st 168.119.145.117, 443, 49731, 49740 HETZNER-ASDE Germany 49->81 75 C:\Users\user\AppData\...\hmvoyz5k.cmdline, Unicode 49->75 dropped 105 Loading BitLocker PowerShell Module 49->105 64 csc.exe 3 49->64         started        67 cmstp.exe 8 7 49->67         started        83 156.253.250.62, 49738, 49749, 5000 POWERLINE-AS-APPOWERLINEDATACENTERHK Seychelles 54->83 85 checkip.dyndns.com 193.122.130.0, 49739, 49815, 80 ORACLE-BMC-31898US United States 54->85 87 reallyfreegeoip.org 104.21.48.1, 443, 49741, 49832 CLOUDFLARENETUS United States 54->87 107 Found suspicious powershell code related to unpacking or dynamic code loading 54->107 77 C:\Users\user\AppData\Local\...\zfskqdv3.dll, PE32 60->77 dropped 69 cvtres.exe 60->69         started        file13 signatures14 process15 file16 73 C:\Users\user\AppData\Local\...\hmvoyz5k.dll, PE32 64->73 dropped 71 cvtres.exe 1 64->71         started        process17
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/b452f866d578784aa6a22272de836476bc9aa165ffb027f43787ed07bdb1a750
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b452f866d578784aa6a22272de836476bc9aa165ffb027f43787ed07bdb1a750/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wrjpqzwvpb4evjvcejzn5a3eo26jvilf76ycp5bxq7wqppnru5ia._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
collection discovery execution persistence
Link:
https://tria.ge/reports/250130-q4nmrsvlgk/
Behaviour
Kills process with taskkill
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in System32 directory
Accesses Microsoft Outlook profiles
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
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/b452f866d578784aa6a22272de836476bc9aa165ffb027f43787ed07bdb1a750

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:Base64_Encoded_Powershell_Directives
Create hunting rule

File information

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

Malspam

MassLogger

Visual Basic Script (vbs) vbs b452f866d578784aa6a22272de836476bc9aa165ffb027f43787ed07bdb1a750

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
URLhaus
https://urlhaus.abuse.ch/url/3420654/

Comments