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Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/12/2024, 19:05

General

  • Target

    2024-12-25_40de753ae75251c4ba1910408ad71dfc_mafia.exe

  • Size

    13.5MB

  • MD5

    40de753ae75251c4ba1910408ad71dfc

  • SHA1

    7842fa9f32079e5b5525d77d1c1d7a87da02b340

  • SHA256

    17afeb97d4656c3c6543c32937673c8d0996e2b852811995f998bb44811fc393

  • SHA512

    39ef9e23243ad5489a253457fa77f02a6695cea351f8a63b66e36dff76c5dfc198253decf7268f1b28bd8e296ea4d484f7d6aac4eed5b0cc05629a36f2c1cd58

  • SSDEEP

    3072:vLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:mOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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.

  • 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\2024-12-25_40de753ae75251c4ba1910408ad71dfc_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-25_40de753ae75251c4ba1910408ad71dfc_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2888
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kfjleopz\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1400
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ktnskjea.exe" C:\Windows\SysWOW64\kfjleopz\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2452
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create kfjleopz binPath= "C:\Windows\SysWOW64\kfjleopz\ktnskjea.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-25_40de753ae75251c4ba1910408ad71dfc_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:404
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description kfjleopz "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3728
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start kfjleopz
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1044
    • 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:2692
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 1288
      2⤵
      • Program crash
      PID:1864
  • C:\Windows\SysWOW64\kfjleopz\ktnskjea.exe
    C:\Windows\SysWOW64\kfjleopz\ktnskjea.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-25_40de753ae75251c4ba1910408ad71dfc_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4500
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2056
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4500 -s 560
      2⤵
      • Program crash
      PID:4404
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2888 -ip 2888
    1⤵
      PID:2308
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4500 -ip 4500
      1⤵
        PID:1144

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        10.7MB

        MD5

        ede0c377951c2147c1754b3d164e1589

        SHA1

        2cdaa5d37b952b90a43e890dd5159342e1fac819

        SHA256

        a46ee6539a28820654579eea5a8260fe64fb5b388317577982da2f079db492f3

        SHA512

        46d1ecd34887cbd731e9e7db7b0aa31ecaad262466b36d2e00ab95203627b65e5969e48cf10921b4d00fbf9ffa04abbe1ad78e872d77bc177819fc9b7d48acbc

      • memory/2056-16-0x0000000000550000-0x0000000000565000-memory.dmp

        Filesize

        84KB

      • memory/2056-17-0x0000000000550000-0x0000000000565000-memory.dmp

        Filesize

        84KB

      • memory/2056-14-0x0000000000550000-0x0000000000565000-memory.dmp

        Filesize

        84KB

      • memory/2888-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2888-8-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/2888-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

        Filesize

        1024KB

      • memory/2888-7-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/2888-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2888-2-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/4500-11-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/4500-12-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/4500-13-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/4500-19-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB