Analysis

  • max time kernel
    147s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    15-04-2024 19:12

General

  • Target

    f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe

  • Size

    14.5MB

  • MD5

    f1b843cc2d7e3ff9331102932f909119

  • SHA1

    89981f7f7f6145380929ec8a16a24a0e7d5620d1

  • SHA256

    3f6b6baa3603a5cbe9eea30bc37a5cd7b17132926cc057b947acf6fdd0c01635

  • SHA512

    f414671e71039a0d369d6e113511a412fa2a13115078ed07790dfaee16a4149a1775de478b16bf2742a9218bbd348f200b92bfbb4dbb4bb8cb3b975142ff8096

  • SSDEEP

    24576:tEqa7lYB5DHlommmm2mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmW:tVl5

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vvtwrdyq\
      2⤵
        PID:2344
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sktbylxr.exe" C:\Windows\SysWOW64\vvtwrdyq\
        2⤵
          PID:3004
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create vvtwrdyq binPath= "C:\Windows\SysWOW64\vvtwrdyq\sktbylxr.exe /d\"C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2640
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description vvtwrdyq "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2688
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start vvtwrdyq
          2⤵
          • Launches sc.exe
          PID:2788
        • 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:2176
      • C:\Windows\SysWOW64\vvtwrdyq\sktbylxr.exe
        C:\Windows\SysWOW64\vvtwrdyq\sktbylxr.exe /d"C:\Users\Admin\AppData\Local\Temp\f1b843cc2d7e3ff9331102932f909119_JaffaCakes118.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2716
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:2172

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        10.7MB

        MD5

        8659d4cddb70df413a9c73b86f51ef9c

        SHA1

        7c913e32b8f907db6622e4cba897a288412c5e57

        SHA256

        b3ab13b8cf464e6265f3a8fa8913d4ccd6a7e0286abed0059c9214603ef71c41

        SHA512

        a0247136ab0403d1be8b6ab16233575e677e3cb0a72f16aaf441074d6e0de8f9b543a2fd44c07a52e0c0b667a36a497943b54d0b6fb8e0150b8afdb1582dfa08

      • memory/1128-1-0x0000000000530000-0x0000000000630000-memory.dmp

        Filesize

        1024KB

      • memory/1128-3-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

      • memory/1128-4-0x0000000000400000-0x0000000000468000-memory.dmp

        Filesize

        416KB

      • memory/1128-8-0x0000000000400000-0x0000000000468000-memory.dmp

        Filesize

        416KB

      • memory/2172-14-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2172-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2172-9-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2172-19-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2172-20-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2172-21-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2716-12-0x0000000000400000-0x0000000000468000-memory.dmp

        Filesize

        416KB

      • memory/2716-10-0x0000000000570000-0x0000000000670000-memory.dmp

        Filesize

        1024KB

      • memory/2716-17-0x0000000000400000-0x0000000000468000-memory.dmp

        Filesize

        416KB