Analysis

  • max time kernel
    60s
  • max time network
    61s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    27-12-2020 08:29

General

  • Target

    client.bin.exe

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 9 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\client.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\client.bin.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3992
    • C:\Users\Admin\AppData\Local\Temp\NS-JH6FB.tmp\NS-ISSM6.tmp
      "C:\Users\Admin\AppData\Local\Temp\NS-JH6FB.tmp\NS-ISSM6.tmp" /et9 $20084 C:\Users\Admin\AppData\Local\Temp\client.bin.exe 4590206 359424 /password=1dwhcbw /verysilent
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1224
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\ml2os0lx\lb3od53.bat""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2708
        • C:\Windows\SysWOW64\xcopy.exe
          xcopy /Y /I /S "C:\Users\Admin\AppData\Local\Temp\ml2os0lx\*" "C:\Users\Admin\AppData\Roaming\Deployment\"
          4⤵
          • Enumerates system info in registry
          PID:3144
        • C:\Users\Admin\AppData\Roaming\Deployment\dwm.exe
          "C:\Users\Admin\AppData\Roaming\Deployment\dwm.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2248
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce" /V "dwm" /t REG_SZ /F /D "C:\Users\Admin\AppData\Roaming\DEPLOY~1\dwm.exe"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:748
            • C:\Windows\SysWOW64\reg.exe
              REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce" /V "dwm" /t REG_SZ /F /D "C:\Users\Admin\AppData\Roaming\DEPLOY~1\dwm.exe"
              6⤵
              • Adds Run key to start application
              PID:3864
          • C:\Users\Admin\AppData\Local\Temp\1.exe
            C:\Users\Admin\AppData\Local\Temp\1.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1892
            • C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1.exe
              "C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:2704
              • C:\Users\Admin\AppData\Local\dwedfwefewfweferferf.exe
                "C:\Users\Admin\AppData\Local\dwedfwefewfweferferf.exe"
                7⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:3540
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 3 & Del "dwedfwefewfweferferf.exe"
                  8⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1428
                  • C:\Windows\SysWOW64\choice.exe
                    choice /C Y /N /D Y /T 3
                    9⤵
                      PID:3632
            • C:\Users\Admin\AppData\Local\Temp\2.exe
              C:\Users\Admin\AppData\Local\Temp\2.exe
              5⤵
              • Executes dropped EXE
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              PID:3856

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/2704-53-0x00007FFCC07B0000-0x00007FFCC119C000-memory.dmp

      Filesize

      9.9MB

    • memory/2704-54-0x0000000000D30000-0x0000000000D31000-memory.dmp

      Filesize

      4KB

    • memory/3540-64-0x0000000006660000-0x0000000006661000-memory.dmp

      Filesize

      4KB

    • memory/3540-62-0x0000000005EB0000-0x0000000005EB1000-memory.dmp

      Filesize

      4KB

    • memory/3540-63-0x00000000060C0000-0x00000000060C1000-memory.dmp

      Filesize

      4KB

    • memory/3540-60-0x0000000000090000-0x0000000000091000-memory.dmp

      Filesize

      4KB

    • memory/3540-59-0x0000000071520000-0x0000000071C0E000-memory.dmp

      Filesize

      6.9MB

    • memory/3856-70-0x0000000071520000-0x0000000071C0E000-memory.dmp

      Filesize

      6.9MB

    • memory/3856-71-0x0000000000710000-0x0000000000711000-memory.dmp

      Filesize

      4KB

    • memory/3856-75-0x00000000051D0000-0x00000000051D1000-memory.dmp

      Filesize

      4KB

    • memory/3856-76-0x0000000008720000-0x0000000008721000-memory.dmp

      Filesize

      4KB

    • memory/3856-77-0x0000000005470000-0x0000000005474000-memory.dmp

      Filesize

      16KB