Analysis

  • max time kernel
    151s
  • max time network
    109s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23/01/2023, 19:09

General

  • Target
    5577a97d0c2c1e2930eb1aa36b4d0ebb.exe
  • Size 3.6MB
  • Sample230123-xtvfwsge5v
  • SHA256 217859f8f952a9de8aeb91dc175ef6dad10142327bb6111fafa2b4523161d178
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Blocklisted process makes network request 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 4 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops desktop.ini file(s) 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 27 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 24 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5577a97d0c2c1e2930eb1aa36b4d0ebb.exe
    "C:\Users\Admin\AppData\Local\Temp\5577a97d0c2c1e2930eb1aa36b4d0ebb.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:856
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll,start
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Accesses Microsoft Outlook accounts
      • Accesses Microsoft Outlook profiles
      • Drops desktop.ini file(s)
      • Suspicious use of SetThreadContext
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1328
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 30708
        3⤵
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        PID:1192
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /End /tn \Microsoft\Windows\Wininet\CacheTask
        3⤵
          PID:1952
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask
          3⤵
            PID:1620

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            Qdwywhepeywaes.dll

            • Path C:\Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
            • Size 4.3MB
            • SHA256 d283a1b4f7fd567b7458586269609ce400f4245173281047da50cec1bbd92209
            • MD5 SHA1 SHA512 SSDEEP

            Qdwywhepeywaes.dll

            • Path \Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
            • Size 4.3MB
            • SHA256 d283a1b4f7fd567b7458586269609ce400f4245173281047da50cec1bbd92209
            • MD5 SHA1 SHA512 SSDEEP

            Qdwywhepeywaes.dll

            • Path \Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
            • Size 4.3MB
            • SHA256 d283a1b4f7fd567b7458586269609ce400f4245173281047da50cec1bbd92209
            • MD5 SHA1 SHA512 SSDEEP

            Qdwywhepeywaes.dll

            • Path \Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
            • Size 4.3MB
            • SHA256 d283a1b4f7fd567b7458586269609ce400f4245173281047da50cec1bbd92209
            • MD5 SHA1 SHA512 SSDEEP

            Qdwywhepeywaes.dll

            • Path \Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
            • Size 4.3MB
            • SHA256 d283a1b4f7fd567b7458586269609ce400f4245173281047da50cec1bbd92209
            • MD5 SHA1 SHA512 SSDEEP

            memory/856-58-0x0000000000400000-0x0000000002F0B000-memory.dmp

            memory/856-57-0x0000000004BC0000-0x00000000050A2000-memory.dmp

            memory/856-54-0x0000000076151000-0x0000000076153000-memory.dmp

            memory/856-56-0x0000000004830000-0x0000000004BB2000-memory.dmp

            memory/856-55-0x0000000004830000-0x0000000004BB2000-memory.dmp

            memory/856-67-0x0000000000400000-0x0000000002F0B000-memory.dmp

            memory/1192-92-0x0000000001EC0000-0x000000000216F000-memory.dmp

            memory/1192-80-0x0000000000290000-0x000000000052D000-memory.dmp

            memory/1192-91-0x0000000000290000-0x000000000052D000-memory.dmp

            memory/1192-88-0x000007FEFBD11000-0x000007FEFBD13000-memory.dmp

            memory/1192-86-0x0000000002280000-0x00000000023C0000-memory.dmp

            memory/1192-87-0x0000000002280000-0x00000000023C0000-memory.dmp

            memory/1328-66-0x0000000001FE0000-0x0000000002430000-memory.dmp

            memory/1328-71-0x0000000003390000-0x0000000003F06000-memory.dmp

            memory/1328-77-0x0000000003390000-0x0000000003F06000-memory.dmp

            memory/1328-79-0x0000000004210000-0x0000000004350000-memory.dmp

            memory/1328-75-0x0000000003F10000-0x0000000004050000-memory.dmp

            memory/1328-82-0x0000000004210000-0x0000000004350000-memory.dmp

            memory/1328-83-0x0000000003F10000-0x0000000004050000-memory.dmp

            memory/1328-84-0x0000000003F10000-0x0000000004050000-memory.dmp

            memory/1328-73-0x0000000003390000-0x0000000003F06000-memory.dmp

            memory/1328-76-0x0000000003F10000-0x0000000004050000-memory.dmp

            memory/1328-70-0x0000000003390000-0x0000000003F06000-memory.dmp

            memory/1328-69-0x0000000001FE0000-0x0000000002430000-memory.dmp

            memory/1328-89-0x00000000042E5000-0x00000000042E7000-memory.dmp

            memory/1328-90-0x00000000042E5000-0x00000000042E7000-memory.dmp

            memory/1328-68-0x0000000001FE0000-0x0000000002430000-memory.dmp

            memory/1328-95-0x00000000042E5000-0x00000000042E7000-memory.dmp

            memory/1328-94-0x0000000003390000-0x0000000003F06000-memory.dmp