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Analysis

  • max time kernel
    141s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/12/2024, 20:40

General

  • Target

    2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe

  • Size

    12.1MB

  • MD5

    bf0482b484090d1a7804ebb245a98bb1

  • SHA1

    9bde15de16971320eb45314538f3916547f85e4c

  • SHA256

    7361cc6e57468a8f812fb6174a3ca3081d136942c82a2cf6250e8eabdb9b0aee

  • SHA512

    cd6d9cf4d3a89a93f1274b2e85ce54f396c6aa3b573c93b8b30cbac6e229915b39c714d14befbf1e91a93abbac9aeec8cf589972665e1d32c60cea1da9c5b310

  • SSDEEP

    3072:/LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:2OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3012
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\usktemoi\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4540
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nqwqfqbh.exe" C:\Windows\SysWOW64\usktemoi\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4660
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create usktemoi binPath= "C:\Windows\SysWOW64\usktemoi\nqwqfqbh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:472
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description usktemoi "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:924
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start usktemoi
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:624
    • 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:4112
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 1204
      2⤵
      • Program crash
      PID:3312
  • C:\Windows\SysWOW64\usktemoi\nqwqfqbh.exe
    C:\Windows\SysWOW64\usktemoi\nqwqfqbh.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-27_bf0482b484090d1a7804ebb245a98bb1_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1920
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3964
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1920 -s 508
      2⤵
      • Program crash
      PID:820
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3012 -ip 3012
    1⤵
      PID:4396
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1920 -ip 1920
      1⤵
        PID:2068

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        10.3MB

        MD5

        6430f657f348909da51eec4054e509c9

        SHA1

        484579702bc414420f1f12749733a0dd7075efb1

        SHA256

        88258ffcb140f07573564924db08602730922cc7cba1d0734d493654dd17d5b7

        SHA512

        21408a8dc2fd0899cacf346058be1361a1283a122735c024904a5b61825a2f09537e107f694d14f99dcb0fc2dd8c36c8a397e26a67c4322659842581ee989c16

      • memory/1920-12-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/1920-11-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/1920-13-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/1920-19-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3012-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3012-2-0x00000000008A0000-0x00000000008B3000-memory.dmp

        Filesize

        76KB

      • memory/3012-8-0x00000000008A0000-0x00000000008B3000-memory.dmp

        Filesize

        76KB

      • memory/3012-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3012-7-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3012-1-0x0000000000680000-0x0000000000780000-memory.dmp

        Filesize

        1024KB

      • memory/3964-14-0x0000000000730000-0x0000000000745000-memory.dmp

        Filesize

        84KB

      • memory/3964-16-0x0000000000730000-0x0000000000745000-memory.dmp

        Filesize

        84KB

      • memory/3964-17-0x0000000000730000-0x0000000000745000-memory.dmp

        Filesize

        84KB