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Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/12/2024, 00:54

General

  • Target

    JaffaCakes118_27d3fec7629071d5ce9122d2c729f5afbf1c5c0308cf44f32423ece8a6160cb0.exe

  • Size

    331KB

  • MD5

    02048a10ea697604d4afca796a0ab93b

  • SHA1

    fe06af1d3e80afcdce458a0d7bb2ee62b1533141

  • SHA256

    27d3fec7629071d5ce9122d2c729f5afbf1c5c0308cf44f32423ece8a6160cb0

  • SHA512

    e25d88f3a9837eaa5d7732950db48b2cf9ccacb4c72fc35165daf31a74dad799c09a29adb281ca1c995ba4a43e844275a2c6fe9fcf1f6a1d062fe9b2127f36fb

  • SSDEEP

    6144:F7+WqgwH1pbCLYCdNyZMQsyOlimfkkJaw:F6uu1pbCL90ZMQfrUjaw

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

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_27d3fec7629071d5ce9122d2c729f5afbf1c5c0308cf44f32423ece8a6160cb0.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27d3fec7629071d5ce9122d2c729f5afbf1c5c0308cf44f32423ece8a6160cb0.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1876
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lpbobsog\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3980
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wgtblfjk.exe" C:\Windows\SysWOW64\lpbobsog\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3676
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create lpbobsog binPath= "C:\Windows\SysWOW64\lpbobsog\wgtblfjk.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27d3fec7629071d5ce9122d2c729f5afbf1c5c0308cf44f32423ece8a6160cb0.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2608
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description lpbobsog "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5104
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start lpbobsog
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5080
    • 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:4300
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1876 -s 1156
      2⤵
      • Program crash
      PID:3396
  • C:\Windows\SysWOW64\lpbobsog\wgtblfjk.exe
    C:\Windows\SysWOW64\lpbobsog\wgtblfjk.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27d3fec7629071d5ce9122d2c729f5afbf1c5c0308cf44f32423ece8a6160cb0.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2816
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4616
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 512
      2⤵
      • Program crash
      PID:2684
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1876 -ip 1876
    1⤵
      PID:2944
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2816 -ip 2816
      1⤵
        PID:5000

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        12.9MB

        MD5

        6cca157e801da9eaefb6d842699b722f

        SHA1

        7acb4e79862f7bd1c7b8974e7d1e7eacaaf31905

        SHA256

        8aeca9fab3e737a2916286e8d969db6d411d4772b7b96a4276ae5b5879317b98

        SHA512

        ca53ab7f85e308e7a0ca236537f5bfa657e9e6e3b4494d94c4eb0bb49b628d3147eafe87fc4287e2ebc3e4fecfb75478745c8dd6167c9e876c6aff28de32d81d

      • memory/1876-2-0x0000000002CF0000-0x0000000002D03000-memory.dmp

        Filesize

        76KB

      • memory/1876-1-0x0000000002BB0000-0x0000000002CB0000-memory.dmp

        Filesize

        1024KB

      • memory/1876-4-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/1876-13-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/1876-12-0x0000000002CF0000-0x0000000002D03000-memory.dmp

        Filesize

        76KB

      • memory/1876-11-0x0000000000400000-0x0000000002B1C000-memory.dmp

        Filesize

        39.1MB

      • memory/2816-10-0x0000000000400000-0x0000000002B1C000-memory.dmp

        Filesize

        39.1MB

      • memory/4616-8-0x00000000005E0000-0x00000000005F5000-memory.dmp

        Filesize

        84KB

      • memory/4616-14-0x00000000005E0000-0x00000000005F5000-memory.dmp

        Filesize

        84KB

      • memory/4616-15-0x00000000005E0000-0x00000000005F5000-memory.dmp

        Filesize

        84KB