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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/01/2025, 03:03

General

  • Target

    JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe

  • Size

    11.7MB

  • MD5

    874b4f072e4f7a9ef9fe5223fbe918ea

  • SHA1

    f69d63c6ac97ff3765c5bf7e85c684d9f2b9227f

  • SHA256

    bb104f4d64f9a531d76f8a32cff00750975b1897faa74a6284af22bc7df9b002

  • SHA512

    c6b4a093eba3c715d9e3e5302c58d28d49e58813725aca183188b05230198d0be0464d51a0d9017fc4426622975c8fc660e0a4a3cbd965d1ddddedae068e46f9

  • SSDEEP

    24576:6zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzT:

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.

  • 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_874b4f072e4f7a9ef9fe5223fbe918ea.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3948
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bdsqzzh\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:956
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xniuoaew.exe" C:\Windows\SysWOW64\bdsqzzh\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4948
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create bdsqzzh binPath= "C:\Windows\SysWOW64\bdsqzzh\xniuoaew.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3588
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description bdsqzzh "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3196
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start bdsqzzh
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2388
    • 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:2080
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3948 -s 576
      2⤵
      • Program crash
      PID:556
  • C:\Windows\SysWOW64\bdsqzzh\xniuoaew.exe
    C:\Windows\SysWOW64\bdsqzzh\xniuoaew.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:812
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2468
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 512
      2⤵
      • Program crash
      PID:60
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3948 -ip 3948
    1⤵
      PID:1740
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 812 -ip 812
      1⤵
        PID:1348

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        12.4MB

        MD5

        6b451a87022dcdea41f9ca25bf6117db

        SHA1

        8c3d0a717f8102af5e60e171e204a05083e66c4a

        SHA256

        dc2c1b6dfbd86cb19facfc8920dba08fe691229d255ddd911756f954e723d474

        SHA512

        3dd30ab88197078ca1d2e371be42a0c652b29feedaaa083f35e742f90c8596bef6f167ed2bcb52f857cfd37577048c494e111f0d7357fdf2b30bb4dac79b8435

      • memory/812-11-0x0000000000400000-0x00000000004AA000-memory.dmp

        Filesize

        680KB

      • memory/812-18-0x0000000000400000-0x00000000004AA000-memory.dmp

        Filesize

        680KB

      • memory/812-13-0x0000000000400000-0x00000000004AA000-memory.dmp

        Filesize

        680KB

      • memory/812-12-0x0000000000400000-0x00000000004AA000-memory.dmp

        Filesize

        680KB

      • memory/2468-14-0x0000000000C70000-0x0000000000C85000-memory.dmp

        Filesize

        84KB

      • memory/2468-16-0x0000000000C70000-0x0000000000C85000-memory.dmp

        Filesize

        84KB

      • memory/2468-17-0x0000000000C70000-0x0000000000C85000-memory.dmp

        Filesize

        84KB

      • memory/3948-8-0x0000000000400000-0x00000000004AA000-memory.dmp

        Filesize

        680KB

      • memory/3948-9-0x0000000002210000-0x0000000002223000-memory.dmp

        Filesize

        76KB

      • memory/3948-10-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3948-2-0x0000000002210000-0x0000000002223000-memory.dmp

        Filesize

        76KB

      • memory/3948-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3948-1-0x00000000007E0000-0x00000000008E0000-memory.dmp

        Filesize

        1024KB