Analysis

  • max time kernel
    146s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    15-01-2025 18:57

General

  • Target

    2025-01-15_b5745a86aa14cdcecc7ff3c6249aa5a9_mafia.exe

  • Size

    10.9MB

  • MD5

    b5745a86aa14cdcecc7ff3c6249aa5a9

  • SHA1

    3db2edc1501ad7c74a887aa05b42db80ca69d3fb

  • SHA256

    14cc73a250ed6baf6a54c20f5e3b16b9873e33ffa3d034dd493ed9076fa133e3

  • SHA512

    9b2637111e11ced1a39b5835e98103f897ac49784e293ca298d2741eae04c62fb4a38d0124a4e8e5e370a0468f1b323dff47af2b59775944d11df7b11548f0f0

  • SSDEEP

    24576:SpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttl:2oo

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
  • Windows security bypass 2 TTPs 1 IoCs
  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • 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.

  • 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 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-01-15_b5745a86aa14cdcecc7ff3c6249aa5a9_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-01-15_b5745a86aa14cdcecc7ff3c6249aa5a9_mafia.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2200
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bgxkssto\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2564
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tcwbtsnj.exe" C:\Windows\SysWOW64\bgxkssto\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1948
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create bgxkssto binPath= "C:\Windows\SysWOW64\bgxkssto\tcwbtsnj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-15_b5745a86aa14cdcecc7ff3c6249aa5a9_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2304
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description bgxkssto "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2356
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start bgxkssto
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1248
    • 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:3020
  • C:\Windows\SysWOW64\bgxkssto\tcwbtsnj.exe
    C:\Windows\SysWOW64\bgxkssto\tcwbtsnj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-15_b5745a86aa14cdcecc7ff3c6249aa5a9_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2348
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2856

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    14.2MB

    MD5

    af4b18ff639376b3ab6841c299ba06eb

    SHA1

    ce6bbc9559927c4fa575a7d2b4cab6dd9e0251e3

    SHA256

    6ce358dcba8f0f5cd287c5bf6df3cc6b36b004efb7ade145bceb8ec1892313d4

    SHA512

    1cf52c8a1f69e42339912b42e02efe70e43a4b18c09f5d3657fa626c4add7aa94216ba53b1bebf094a848d3c667d5037ae2d1bcb2429e0ee8b53f6954c72735b

  • memory/2200-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

    Filesize

    1024KB

  • memory/2200-3-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/2200-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2200-16-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2200-15-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/2348-12-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/2856-8-0x0000000000090000-0x00000000000A5000-memory.dmp

    Filesize

    84KB

  • memory/2856-11-0x0000000000090000-0x00000000000A5000-memory.dmp

    Filesize

    84KB

  • memory/2856-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2856-17-0x0000000000090000-0x00000000000A5000-memory.dmp

    Filesize

    84KB

  • memory/2856-18-0x0000000000090000-0x00000000000A5000-memory.dmp

    Filesize

    84KB