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Analysis

  • max time kernel
    149s
  • 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
    28/01/2025, 03:46

General

  • Target

    2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe

  • Size

    12.3MB

  • MD5

    f2bdc578585d0f246e1c7a00b172c541

  • SHA1

    18844a0e15ba1ede158e432116377713c9217e1f

  • SHA256

    041bc2517d28c165af6f2d9c307ee80ba34c6841b1523c9e67d81afec2ddf046

  • SHA512

    db881f6ce3c602af1740eefce4987a4e2c5c7050a479f49e666f8235a63be5ce2edaa6c133bdb77e7a73c85d8cb147f895b725cf42236943a4d76132269f7dd4

  • SSDEEP

    24576:R6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQU:4WdLQku

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\2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2516
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cfonmsau\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2488
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fncgtraa.exe" C:\Windows\SysWOW64\cfonmsau\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3996
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create cfonmsau binPath= "C:\Windows\SysWOW64\cfonmsau\fncgtraa.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1528
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description cfonmsau "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4652
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start cfonmsau
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3220
    • 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:752
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 1300
      2⤵
      • Program crash
      PID:4988
  • C:\Windows\SysWOW64\cfonmsau\fncgtraa.exe
    C:\Windows\SysWOW64\cfonmsau\fncgtraa.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_f2bdc578585d0f246e1c7a00b172c541_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4108
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4820
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4108 -s 528
      2⤵
      • Program crash
      PID:4552
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2516 -ip 2516
    1⤵
      PID:1232
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4108 -ip 4108
      1⤵
        PID:1196

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        10.7MB

        MD5

        d022211c167109405961bd965a5e82f7

        SHA1

        5905fe3be1be30f84de41d8caf8e7523a5f0fceb

        SHA256

        31c57ebb2619ba49d14b5c6895d906fd5f5452c77bf5447dd076b22d9dda3dc3

        SHA512

        45fb267aadbd3f536fbdf6e57021fbb26fab588b122e718ed821591fd43b46921da9d92c6ce7ee36dd7d982f9aabc8e45e699ea48988c1bcebf58dc88d6a757e

      • memory/2516-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2516-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2516-2-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/2516-7-0x0000000000400000-0x000000000044F000-memory.dmp

        Filesize

        316KB

      • memory/2516-8-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/2516-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

        Filesize

        1024KB

      • memory/4108-12-0x0000000000400000-0x000000000044F000-memory.dmp

        Filesize

        316KB

      • memory/4108-11-0x0000000000400000-0x000000000044F000-memory.dmp

        Filesize

        316KB

      • memory/4108-13-0x0000000000400000-0x000000000044F000-memory.dmp

        Filesize

        316KB

      • memory/4108-18-0x0000000000400000-0x000000000044F000-memory.dmp

        Filesize

        316KB

      • memory/4820-14-0x0000000000960000-0x0000000000975000-memory.dmp

        Filesize

        84KB

      • memory/4820-16-0x0000000000960000-0x0000000000975000-memory.dmp

        Filesize

        84KB

      • memory/4820-17-0x0000000000960000-0x0000000000975000-memory.dmp

        Filesize

        84KB