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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, 17:29

General

  • Target

    2025-01-28_3d6eefda163d7f4ebf4dfc4c46426110_mafia.exe

  • Size

    12.8MB

  • MD5

    3d6eefda163d7f4ebf4dfc4c46426110

  • SHA1

    b8307ffee2975a25abd1cda73735724e7521d228

  • SHA256

    41c20c399f19561f0c2f65baee9a5ba7a0c93c001b78144f891de3aab46c251c

  • SHA512

    23b2f27978778ab87338d8ac807ed5c3bc48fd0c88ac55d5858e328356a303ea0c3f39a863c974f17cc56aad97e1b817779a11fac49602c10c72a985bd12c293

  • SSDEEP

    24576:BpomTTN9ttttttttttttttttttttttttttttttttttttttttttttttttttttttt1:boo

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_3d6eefda163d7f4ebf4dfc4c46426110_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-28_3d6eefda163d7f4ebf4dfc4c46426110_mafia.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4860
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tcybmxdj\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2704
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gibmtbpf.exe" C:\Windows\SysWOW64\tcybmxdj\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1972
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create tcybmxdj binPath= "C:\Windows\SysWOW64\tcybmxdj\gibmtbpf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_3d6eefda163d7f4ebf4dfc4c46426110_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4172
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description tcybmxdj "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4416
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start tcybmxdj
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4564
    • 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:1748
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 1028
      2⤵
      • Program crash
      PID:3532
  • C:\Windows\SysWOW64\tcybmxdj\gibmtbpf.exe
    C:\Windows\SysWOW64\tcybmxdj\gibmtbpf.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_3d6eefda163d7f4ebf4dfc4c46426110_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1064
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3392
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1064 -s 512
      2⤵
      • Program crash
      PID:1480
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4860 -ip 4860
    1⤵
      PID:4900
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1064 -ip 1064
      1⤵
        PID:648

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        10.0MB

        MD5

        65c919290eeb33a5ed781e4443a1f47a

        SHA1

        052d7ffa0e0e0b167d501cbc9859c0afdff3826b

        SHA256

        f4dd7467103952767dabd02879631611b64a25843aacd5f110a614a013b55cfb

        SHA512

        8436795f16f02908dccd8e3b86582a77102b1850101addf706c1823fd5198d6554292922265d45dc8c4ce2f1e15262a9ab0fe6eafebf6a03ac31eb4fd0d5bd7b

      • memory/1064-13-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/1064-11-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/1064-12-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/1064-18-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/3392-14-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

        Filesize

        84KB

      • memory/3392-16-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

        Filesize

        84KB

      • memory/3392-17-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

        Filesize

        84KB

      • memory/4860-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4860-2-0x00000000004C0000-0x00000000004D3000-memory.dmp

        Filesize

        76KB

      • memory/4860-7-0x0000000000400000-0x000000000044E000-memory.dmp

        Filesize

        312KB

      • memory/4860-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4860-8-0x00000000004C0000-0x00000000004D3000-memory.dmp

        Filesize

        76KB

      • memory/4860-1-0x0000000000520000-0x0000000000620000-memory.dmp

        Filesize

        1024KB