Analysis

  • max time kernel
    148s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-12-2024 21:54

General

  • Target

    JaffaCakes118_11d49902844ec882859eb77c3290075e777b549160f222a3b40223f2f46c2ced.exe

  • Size

    291KB

  • MD5

    780b60facfcf100af7a2d30da62ddf3d

  • SHA1

    17c31df57ed29494f39b0091e7ba3fe459018644

  • SHA256

    11d49902844ec882859eb77c3290075e777b549160f222a3b40223f2f46c2ced

  • SHA512

    87828565200be79a86d401bdb5a30d063171c28de7bc030baa29d03a3dc2ac9d6d1b38c3b6c0a41c5f998d1c7b23891a6075b0d810d097670e8a41c0d928f453

  • SSDEEP

    6144:M6k6SmTHN6W9Blk5gi615mof8WBCAb81wp:MZFmN6W9BlYgi6DAiCAbA

Malware Config

Extracted

Family

tofsee

C2

mubrikych.top

oxxyfix.xyz

Signatures

  • Tofsee

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

  • Tofsee family
  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_11d49902844ec882859eb77c3290075e777b549160f222a3b40223f2f46c2ced.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_11d49902844ec882859eb77c3290075e777b549160f222a3b40223f2f46c2ced.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4316
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ritxzcgo\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4844
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sxxyncn.exe" C:\Windows\SysWOW64\ritxzcgo\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4600
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create ritxzcgo binPath= "C:\Windows\SysWOW64\ritxzcgo\sxxyncn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_11d49902844ec882859eb77c3290075e777b549160f222a3b40223f2f46c2ced.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2432
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description ritxzcgo "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1428
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start ritxzcgo
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2036
    • 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
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2864
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4316 -s 1044
      2⤵
      • Program crash
      PID:4020
  • C:\Windows\SysWOW64\ritxzcgo\sxxyncn.exe
    C:\Windows\SysWOW64\ritxzcgo\sxxyncn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_11d49902844ec882859eb77c3290075e777b549160f222a3b40223f2f46c2ced.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4184
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4496
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4184 -s 520
      2⤵
      • Program crash
      PID:2860
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4316 -ip 4316
    1⤵
      PID:1208
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4184 -ip 4184
      1⤵
        PID:1232

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        11.7MB

        MD5

        61d367d844f45d9efb2743b41f84e3c4

        SHA1

        255ea02c5e0c08d9e23b160cafae3aa990a7f988

        SHA256

        d8fb141bc120a3107b98a8be4cc9c4f6326841a50267709b7cf83332d7fbad9d

        SHA512

        f83e2ccfc2d54a0ef15e35a82b1dfec97cbd93d4ccde7b41ce9975d3272a67885b22c1b19306a068bb70af3320195571a82bfe1afc466c3d9e6afc121d09927a

      • memory/4184-13-0x0000000000400000-0x00000000004CA000-memory.dmp

        Filesize

        808KB

      • memory/4184-12-0x0000000000400000-0x00000000004CA000-memory.dmp

        Filesize

        808KB

      • memory/4184-11-0x0000000000400000-0x00000000004CA000-memory.dmp

        Filesize

        808KB

      • memory/4184-19-0x0000000000400000-0x00000000004CA000-memory.dmp

        Filesize

        808KB

      • memory/4316-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4316-2-0x0000000002100000-0x0000000002113000-memory.dmp

        Filesize

        76KB

      • memory/4316-7-0x0000000000400000-0x00000000004CA000-memory.dmp

        Filesize

        808KB

      • memory/4316-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4316-8-0x0000000002100000-0x0000000002113000-memory.dmp

        Filesize

        76KB

      • memory/4316-1-0x0000000000580000-0x0000000000680000-memory.dmp

        Filesize

        1024KB

      • memory/4496-14-0x0000000000C00000-0x0000000000C15000-memory.dmp

        Filesize

        84KB

      • memory/4496-16-0x0000000000C00000-0x0000000000C15000-memory.dmp

        Filesize

        84KB

      • memory/4496-17-0x0000000000C00000-0x0000000000C15000-memory.dmp

        Filesize

        84KB