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Analysis

  • max time kernel
    144s
  • 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
    27/01/2025, 18:44

General

  • Target

    2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe

  • Size

    13.3MB

  • MD5

    6aedcabbe6c76777301c851da07c6c3c

  • SHA1

    844aaac0d4383b8df6bf5ebe266ed8b704f76bb2

  • SHA256

    df205ed8f7724b3a6a00a9fecca1aeef1077885af5a9be0a85a910920919701e

  • SHA512

    0f940b01a7d5695ad414b818cf082de7d37e36d5b715024b1fe8650f45613facfb03ca006efa0962e35fd9f47d524f2af55fc1cb350676db903bff6fe6c221ce

  • SSDEEP

    3072:RLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:UOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2868
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ypxvdfw\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3560
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zmyvobgq.exe" C:\Windows\SysWOW64\ypxvdfw\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3092
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create ypxvdfw binPath= "C:\Windows\SysWOW64\ypxvdfw\zmyvobgq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2328
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description ypxvdfw "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2020
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start ypxvdfw
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1996
    • 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:3440
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2868 -s 1220
      2⤵
      • Program crash
      PID:4224
  • C:\Windows\SysWOW64\ypxvdfw\zmyvobgq.exe
    C:\Windows\SysWOW64\ypxvdfw\zmyvobgq.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5112
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:664
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5112 -s 548
      2⤵
      • Program crash
      PID:2016
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2868 -ip 2868
    1⤵
      PID:2336
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 5112 -ip 5112
      1⤵
        PID:116

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        13.9MB

        MD5

        cf97622a7a6a5b037e2001a61fff643d

        SHA1

        08e0bb60f09aff2eadc07adeaa9910c3fc6c46bb

        SHA256

        50cde2309c4b1d1f44160d8f9d9b67bb0111d0a588de63a4f638d31022ffacef

        SHA512

        5ab125f2eff0f50e13cea2130136b543b56b05044da19a352c53b15a3660bea9ca18c7e7c36d774f2b75073e8450cb4067e365f023ad1c640afeed3987b23ba4

      • memory/664-14-0x0000000000840000-0x0000000000855000-memory.dmp

        Filesize

        84KB

      • memory/664-17-0x0000000000840000-0x0000000000855000-memory.dmp

        Filesize

        84KB

      • memory/664-16-0x0000000000840000-0x0000000000855000-memory.dmp

        Filesize

        84KB

      • memory/2868-7-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/2868-8-0x0000000000580000-0x0000000000593000-memory.dmp

        Filesize

        76KB

      • memory/2868-2-0x0000000000580000-0x0000000000593000-memory.dmp

        Filesize

        76KB

      • memory/2868-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2868-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2868-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

        Filesize

        1024KB

      • memory/5112-12-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/5112-11-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/5112-13-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/5112-19-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB