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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/02/2025, 00:47

General

  • Target

    2025-02-02_065fcd213148ae2a7cb1baef6e3992be_mafia.exe

  • Size

    10.6MB

  • MD5

    065fcd213148ae2a7cb1baef6e3992be

  • SHA1

    8499e64908ed5c0ec00605337b1e2f992cccf654

  • SHA256

    ddb2a9fe2ec84d3e59e219c1f76df48096f699633f9074ecff9b692d65f674af

  • SHA512

    2e15883e0f2266f14bfa9de0d2ff3c137a366c3839f6ce1633444baf63ab4b3c13c60bd32c0e5ba2ec0e406750d5573589049596b7d17ba048b50eebc1af3ed1

  • SSDEEP

    3072:uLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:3OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\2025-02-02_065fcd213148ae2a7cb1baef6e3992be_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-02-02_065fcd213148ae2a7cb1baef6e3992be_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3904
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ssuujwxh\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1900
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xgafxwrn.exe" C:\Windows\SysWOW64\ssuujwxh\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4328
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create ssuujwxh binPath= "C:\Windows\SysWOW64\ssuujwxh\xgafxwrn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_065fcd213148ae2a7cb1baef6e3992be_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3784
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description ssuujwxh "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:468
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start ssuujwxh
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2924
    • 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:3504
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3904 -s 1244
      2⤵
      • Program crash
      PID:3648
  • C:\Windows\SysWOW64\ssuujwxh\xgafxwrn.exe
    C:\Windows\SysWOW64\ssuujwxh\xgafxwrn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_065fcd213148ae2a7cb1baef6e3992be_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3600
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3272
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3600 -s 512
      2⤵
      • Program crash
      PID:4500
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3904 -ip 3904
    1⤵
      PID:232
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3600 -ip 3600
      1⤵
        PID:5004

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        13.5MB

        MD5

        be58a046ff49fd6c93595fb314dcbb4a

        SHA1

        5058581348cbf99dd4fbbe570eb32f6ca19713e8

        SHA256

        aeeece921b4717a3a5ea0d5f8eb581935bdf16ce177bc0f3045f666480b1c090

        SHA512

        3d8f38fdf6c0935bc44c14928450ee64c56cf6604efe6a367097c199f6de3e47838e03c22463191066d57c4632df7020d423dc4078865fab9d4ad03e34ede10a

      • memory/3272-14-0x0000000000D70000-0x0000000000D85000-memory.dmp

        Filesize

        84KB

      • memory/3272-16-0x0000000000D70000-0x0000000000D85000-memory.dmp

        Filesize

        84KB

      • memory/3272-17-0x0000000000D70000-0x0000000000D85000-memory.dmp

        Filesize

        84KB

      • memory/3600-11-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3600-12-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3600-13-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3600-19-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3904-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3904-2-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/3904-7-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3904-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3904-8-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/3904-1-0x0000000000630000-0x0000000000730000-memory.dmp

        Filesize

        1024KB