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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
    01/02/2025, 04:45

General

  • Target

    2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe

  • Size

    10.4MB

  • MD5

    04e437967a97228b8a21dc2a0c069a00

  • SHA1

    3636d55251c0953be05d9f02897352f7f43f7a9f

  • SHA256

    2be71100003ab6289fedc5f0fe8bd605020c56ad24e4a3d1aad58634b2c259b9

  • SHA512

    4729d9fc7c432805ba60d98ffafe2663f4f92ae84e18291e001fe783148c22ec6692bfd747f6520e8c4837cd23d353780fef6200dad8152d2f4243c43084c59c

  • SSDEEP

    24576:IEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZS:FfotA

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\2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4496
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zertyvax\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3676
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\owlpcajj.exe" C:\Windows\SysWOW64\zertyvax\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3480
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create zertyvax binPath= "C:\Windows\SysWOW64\zertyvax\owlpcajj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3656
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description zertyvax "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:364
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start zertyvax
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:708
    • 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:1352
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4496 -s 1396
      2⤵
      • Program crash
      PID:2584
  • C:\Windows\SysWOW64\zertyvax\owlpcajj.exe
    C:\Windows\SysWOW64\zertyvax\owlpcajj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_04e437967a97228b8a21dc2a0c069a00_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3396
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:1784
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3396 -s 508
      2⤵
      • Program crash
      PID:4084
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4496 -ip 4496
    1⤵
      PID:2740
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3396 -ip 3396
      1⤵
        PID:1228

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        11.3MB

        MD5

        b1bdf052c687efb6e55d6d0f11c77443

        SHA1

        e6beb96ecd6e1ad9000a86ab9b2c41b21d7c24b7

        SHA256

        0db3eaeb645585859d210c340d62fa39940c62ca01c1c7dc79c886168c08a894

        SHA512

        6d83d4efca87c57acd19025f542950b1330c0e592f2e985bd4982b602bf275189f50d85dcf2304c41650eff031d4d1fe9eb63f892bb7f7620459a55aba6ba1cb

      • memory/1784-14-0x00000000004E0000-0x00000000004F5000-memory.dmp

        Filesize

        84KB

      • memory/1784-17-0x00000000004E0000-0x00000000004F5000-memory.dmp

        Filesize

        84KB

      • memory/1784-16-0x00000000004E0000-0x00000000004F5000-memory.dmp

        Filesize

        84KB

      • memory/3396-13-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3396-12-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3396-11-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3396-18-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/4496-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4496-8-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/4496-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

        Filesize

        1024KB

      • memory/4496-7-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/4496-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4496-2-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB