MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a49c603dd72f51a238c1c8effb14f385d2ded3b40bcf4fa31c4f57ccaef5b7da. 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: 8


Intelligence 8 IOCs YARA 1 File information Comments
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SHA256 hash: a49c603dd72f51a238c1c8effb14f385d2ded3b40bcf4fa31c4f57ccaef5b7da
SHA3-384 hash: 8bc9d95e16632e9baabc3a6565502fa4a89a83d140f9b5184363281f593b55042f7acb6060bed2865ee4a5ed05ef9fa4
SHA1 hash: 4dbb5cae1a09d226447956a572646823b8478b8f
MD5 hash: bb4534691466cacd694545b9f362128d
humanhash: jupiter-five-fifteen-zebra
File name:pure.vbs
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:443'287 bytes
First seen:2025-01-30 08:26:46 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 12288:hartNcEVjWry3UmCesoyPUW57Zl0ho3XS/Aor:ucHy3Um1soycm1l0Ogr
TLSH T1FD9412F45B3DE998363839EBB0CB4B25345ADDD5C048C27F81BDE9EE2C5AA0845E1067
Magika vba
Reporter JAMESWT_WT
Tags:156-253-250-62 AsyncRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
98
Origin country :
IT IT
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.VBS.Agent.BXH.Eldorado.3198.22245.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=679b38a729ae628cf42b74e1
Tags:
obfuscate xtreme sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm fingerprint monero obfuscated powershell
Link:
https://www.filescan.io/uploads/679b37dab05f23d167eb8598/reports/9260a810-7653-4dd7-8cef-7e7858a326e5/overview
Verdict:
Suspicious
Labled as:
VBS/Agent.BXH
Link:
https://www.hybrid-analysis.com/sample/a49c603dd72f51a238c1c8effb14f385d2ded3b40bcf4fa31c4f57ccaef5b7da
Result
Verdict:
MALICIOUS
Details
Base64 Encoded Powershell Directives
Detected one or more base64 encoded Powershell directives.
Result
Threat name:
PureCrypter, AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1602834
Signature
.NET source code contains very large array initializations
Bypasses PowerShell execution policy
Creates multiple autostart registry keys
Detected PureCrypter Trojan
Found many strings related to Crypto-Wallets (likely being stolen)
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)
Multi AV Scanner detection for submitted file
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: Powerup Write Hijack DLL
Sigma detected: Rare Remote Thread Creation By Uncommon Source Image
Sigma detected: Register Wscript In Run Key
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
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 AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1602834 Sample: pure.vbs Startdate: 30/01/2025 Architecture: WINDOWS Score: 100 117 0x0.st 2->117 123 Sigma detected: Register Wscript In Run Key 2->123 125 Malicious sample detected (through community Yara rule) 2->125 127 Multi AV Scanner detection for submitted file 2->127 129 13 other signatures 2->129 11 wscript.exe 2 2->11         started        15 wscript.exe 2->15         started        17 wscript.exe 2->17         started        19 7 other processes 2->19 signatures3 process4 file5 115 C:\Users\user\AppData\Local\Temp\c.bat, ASCII 11->115 dropped 151 VBScript performs obfuscated calls to suspicious functions 11->151 153 Wscript starts Powershell (via cmd or directly) 11->153 155 Windows Scripting host queries suspicious COM object (likely to drop second stage) 11->155 157 Suspicious execution chain found 11->157 21 cmd.exe 1 11->21         started        24 cmd.exe 15->24         started        26 cmd.exe 17->26         started        159 Loading BitLocker PowerShell Module 19->159 28 cmd.exe 19->28         started        30 conhost.exe 19->30         started        32 conhost.exe 19->32         started        34 4 other processes 19->34 signatures6 process7 signatures8 135 Suspicious powershell command line found 21->135 137 Wscript starts Powershell (via cmd or directly) 21->137 139 Bypasses PowerShell execution policy 21->139 36 cmd.exe 2 21->36         started        39 conhost.exe 21->39         started        41 cmd.exe 24->41         started        43 conhost.exe 24->43         started        45 cmd.exe 26->45         started        47 conhost.exe 26->47         started        49 cmd.exe 28->49         started        51 conhost.exe 28->51         started        process9 signatures10 131 Suspicious powershell command line found 36->131 133 Wscript starts Powershell (via cmd or directly) 36->133 53 powershell.exe 36->53         started        58 powershell.exe 14 35 36->58         started        60 conhost.exe 36->60         started        62 powershell.exe 41->62         started        64 powershell.exe 41->64         started        66 conhost.exe 41->66         started        68 powershell.exe 45->68         started        70 conhost.exe 45->70         started        72 2 other processes 49->72 process11 dnsIp12 119 89.117.79.31, 49739, 49740, 49742 LRTC-ASLT Lithuania 53->119 99 C:\Users\user\...\WindowsUpdate_653.vbs, ASCII 53->99 dropped 101 C:\Users\user\...\WindowsUpdate_653.bat, ASCII 53->101 dropped 141 Found many strings related to Crypto-Wallets (likely being stolen) 53->141 143 Creates multiple autostart registry keys 53->143 145 Found suspicious powershell code related to unpacking or dynamic code loading 53->145 121 0x0.st 168.119.145.117, 443, 49731, 49738 HETZNER-ASDE Germany 58->121 103 C:\Users\user\AppData\...\ofkdkbmp.cmdline, Unicode 58->103 dropped 147 Loading BitLocker PowerShell Module 58->147 74 csc.exe 3 58->74         started        77 cmstp.exe 8 7 58->77         started        105 C:\Users\user\...\WindowsUpdate_186.bat, ASCII 62->105 dropped 149 Detected PureCrypter Trojan 62->149 79 csc.exe 64->79         started        81 cmstp.exe 64->81         started        83 csc.exe 68->83         started        85 cmstp.exe 68->85         started        87 csc.exe 72->87         started        89 cmstp.exe 72->89         started        file13 signatures14 process15 file16 107 C:\Users\user\AppData\Local\...\ofkdkbmp.dll, PE32 74->107 dropped 91 cvtres.exe 1 74->91         started        109 C:\Users\user\AppData\Local\...\w3imvomc.dll, PE32 79->109 dropped 93 cvtres.exe 79->93         started        111 C:\Users\user\AppData\Local\...\n5pifc4k.dll, PE32 83->111 dropped 95 cvtres.exe 83->95         started        113 C:\Users\user\AppData\Local\...\2vj0yryt.dll, PE32 87->113 dropped 97 cvtres.exe 87->97         started        process17
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/a49c603dd72f51a238c1c8effb14f385d2ded3b40bcf4fa31c4f57ccaef5b7da
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a49c603dd72f51a238c1c8effb14f385d2ded3b40bcf4fa31c4f57ccaef5b7da/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=usogapoxf5i2eogbzdx7wfhtqxjn5u5ubphu7iy4j5l4zlxvw7na._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution persistence
Link:
https://tria.ge/reports/250130-kce9eswkgy/
Behaviour
Kills process with taskkill
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in System32 directory
Adds Run key to start application
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.

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
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File information

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

Web download

AsyncRAT

Visual Basic Script (vbs) vbs a49c603dd72f51a238c1c8effb14f385d2ded3b40bcf4fa31c4f57ccaef5b7da

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3420646/
  
Delivery method
Distributed via web download

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