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Analysis

  • max time kernel
    141s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/02/2025, 21:14

General

  • Target

    2025-02-03_65a3d9af44eb20cfc288db3372369d7d_mafia.exe

  • Size

    11.7MB

  • MD5

    65a3d9af44eb20cfc288db3372369d7d

  • SHA1

    fd7c2c1fb7d3f26607fe3c5d67a9bd32d4390961

  • SHA256

    c8168e252d66c907dd3f08216091330e989beb9f5f39e09a3775a9d10d157c45

  • SHA512

    49b24870e57053898fc9ea7fdd552f493fee3776ac6e49bc64e12af6d420830a4299f22f2b186a2fd8f8e7525138e49e5f016a596cb8a3ad976dde43c34b3de5

  • SSDEEP

    3072:5LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:8OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\2025-02-03_65a3d9af44eb20cfc288db3372369d7d_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-02-03_65a3d9af44eb20cfc288db3372369d7d_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:452
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jvfbxpyx\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2912
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\easspedr.exe" C:\Windows\SysWOW64\jvfbxpyx\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3068
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create jvfbxpyx binPath= "C:\Windows\SysWOW64\jvfbxpyx\easspedr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_65a3d9af44eb20cfc288db3372369d7d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1432
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description jvfbxpyx "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5012
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start jvfbxpyx
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3460
    • 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:3456
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 452 -s 668
      2⤵
      • Program crash
      PID:3672
  • C:\Windows\SysWOW64\jvfbxpyx\easspedr.exe
    C:\Windows\SysWOW64\jvfbxpyx\easspedr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_65a3d9af44eb20cfc288db3372369d7d_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2428
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2584
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 508
      2⤵
      • Program crash
      PID:2292
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 452 -ip 452
    1⤵
      PID:3276
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2428 -ip 2428
      1⤵
        PID:1972

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        13.7MB

        MD5

        36ad0603776f34d90e13324ccdf9732b

        SHA1

        d8248c185a92b9318d70a71804ebca51553f23ed

        SHA256

        1f44bd12254ee5f6bb61ea433d76ab8e00a6f1d8c33e3a9e4abcaba508e1fefe

        SHA512

        63679de0e5bafc340ba3d739622f80d4195e65c1631f2e525ea1696a8d6ae3e4f19365e6083ae4bd45cf36796416cce53c650aeaa35d9ff9f85c45f56b27194d

      • memory/452-8-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/452-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/452-2-0x0000000000490000-0x00000000004A3000-memory.dmp

        Filesize

        76KB

      • memory/452-7-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/452-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/452-1-0x0000000000510000-0x0000000000610000-memory.dmp

        Filesize

        1024KB

      • memory/2428-12-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/2428-11-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/2428-13-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/2428-19-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/2584-14-0x0000000000A10000-0x0000000000A25000-memory.dmp

        Filesize

        84KB

      • memory/2584-16-0x0000000000A10000-0x0000000000A25000-memory.dmp

        Filesize

        84KB

      • memory/2584-17-0x0000000000A10000-0x0000000000A25000-memory.dmp

        Filesize

        84KB