Analysis

  • max time kernel
    149s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2024, 16:12

General

  • Target

    de6b0434de35cf7e80ca010ea9c0bd03.exe

  • Size

    10.7MB

  • MD5

    de6b0434de35cf7e80ca010ea9c0bd03

  • SHA1

    1465db214939cdf236463023b37ec908d97bf4e5

  • SHA256

    b33a01548088b02d5ef5e727d704cb0f60adb233a8c0592e59ff4c69204cb9e1

  • SHA512

    df25341fcfbe0c16e563958c0d10d5f09d7b61651d8a0c22d4cd24924372a352ccd7c01de9d0a51e550b984001dda389269c08f7029487c38a5de8799bdfe1b9

  • SSDEEP

    49152:jyjfVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV3:

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

  • Tofsee

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

  • Windows security bypass 2 TTPs 1 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\de6b0434de35cf7e80ca010ea9c0bd03.exe
    "C:\Users\Admin\AppData\Local\Temp\de6b0434de35cf7e80ca010ea9c0bd03.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1948
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\esukvmyu\
      2⤵
        PID:868
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qkkbmvmo.exe" C:\Windows\SysWOW64\esukvmyu\
        2⤵
          PID:2940
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create esukvmyu binPath= "C:\Windows\SysWOW64\esukvmyu\qkkbmvmo.exe /d\"C:\Users\Admin\AppData\Local\Temp\de6b0434de35cf7e80ca010ea9c0bd03.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2528
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description esukvmyu "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2624
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start esukvmyu
          2⤵
          • Launches sc.exe
          PID:2576
        • 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 Windows Firewall
          PID:2540
      • C:\Windows\SysWOW64\esukvmyu\qkkbmvmo.exe
        C:\Windows\SysWOW64\esukvmyu\qkkbmvmo.exe /d"C:\Users\Admin\AppData\Local\Temp\de6b0434de35cf7e80ca010ea9c0bd03.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2424
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:2600

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        2.0MB

        MD5

        780c714e424d8988d6e259632588ba2e

        SHA1

        daefc3af14c1498ca10ded8abc1a4c1dbdbe42e9

        SHA256

        3d7bf1d2c5fc1227d34287ca23a56ca6bb8cc59d39334358ae4da0e618a376a1

        SHA512

        90644d66c66bb79397d8bd360beebe66fb65ccd51dc20686cf6ca30f40bc67e5abf57d0e906dfa4dc4e5de4dcce4ea3bd05a2811dac8d43e9f6606e13b499176

      • C:\Windows\SysWOW64\esukvmyu\qkkbmvmo.exe

        Filesize

        6.4MB

        MD5

        5833a6a9c093266df2ae5c0430a291a7

        SHA1

        00bf58b5ee1745b18ab36762cf728bac7a5b8e10

        SHA256

        5d6806b4d75b1a6ee120910b1933897741d09af4bae895609ff8ae2a1792232d

        SHA512

        1ba836ca6c16231453b0f2a1a1b1def95e9952416e3bcc749038ee32b33c7e47c98c41a8f7778152feaa21ca668fcd7ad01e2b0d45dc2b52ec4d71db48af281e

      • memory/1948-7-0x0000000000400000-0x0000000000C18000-memory.dmp

        Filesize

        8.1MB

      • memory/1948-2-0x0000000000020000-0x0000000000033000-memory.dmp

        Filesize

        76KB

      • memory/1948-1-0x0000000000CE0000-0x0000000000DE0000-memory.dmp

        Filesize

        1024KB

      • memory/1948-9-0x0000000000020000-0x0000000000033000-memory.dmp

        Filesize

        76KB

      • memory/1948-4-0x0000000000400000-0x0000000000C18000-memory.dmp

        Filesize

        8.1MB

      • memory/2424-17-0x0000000000400000-0x0000000000C18000-memory.dmp

        Filesize

        8.1MB

      • memory/2424-10-0x0000000000270000-0x0000000000370000-memory.dmp

        Filesize

        1024KB

      • memory/2424-11-0x0000000000400000-0x0000000000C18000-memory.dmp

        Filesize

        8.1MB

      • memory/2600-12-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2600-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2600-15-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2600-20-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2600-19-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2600-21-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2600-22-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB