Analysis

  • max time kernel
    144s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    31-08-2024 01:51

General

  • Target

    00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc.exe

  • Size

    11.2MB

  • MD5

    6673656f0eea34edbe311046d2525113

  • SHA1

    d94411ba9cec4a38a2f2ddf11df6f2e27eb5cbfd

  • SHA256

    00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc

  • SHA512

    f321489b42db6d062837414749adaefffeb87703f937b8ebb1e27a670cae75128af278222284b8bd72d26828535b1683d821e97b721d110b971d183312f37a01

  • SSDEEP

    12288:ozZd0++++++++++++++++++++++++++++++++++++++++++++++++++++++++++/:ozZ

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.

  • 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\00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc.exe
    "C:\Users\Admin\AppData\Local\Temp\00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:576
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ohhvszjj\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1676
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ktnskjea.exe" C:\Windows\SysWOW64\ohhvszjj\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1936
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create ohhvszjj binPath= "C:\Windows\SysWOW64\ohhvszjj\ktnskjea.exe /d\"C:\Users\Admin\AppData\Local\Temp\00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:776
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description ohhvszjj "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1720
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start ohhvszjj
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2824
    • 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:2772
  • C:\Windows\SysWOW64\ohhvszjj\ktnskjea.exe
    C:\Windows\SysWOW64\ohhvszjj\ktnskjea.exe /d"C:\Users\Admin\AppData\Local\Temp\00a7fe01857f4c5a118c936b5573b4c2755c8369534870394c3d61a5af058bcc.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2876
    • 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:2616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    14.1MB

    MD5

    cc05685e6b68508597b4b7074b4392ce

    SHA1

    b566ce79e3869fa4b1e73f5c5003fb037db37c5b

    SHA256

    8b6a3354cf8c256943f7e0b3c25deda555b0e095353a94e0bff70f3ef65f62b6

    SHA512

    28ea98137879e40cb894a2e622f7dd32c1cbef238b309432ff6e0336b8331a897b9b32b4cfb70374a3d3d750e5520de63a699cdfdaddbf6e89b0f61fc24e41c5

  • memory/576-2-0x0000000000400000-0x0000000002DAC000-memory.dmp

    Filesize

    41.7MB

  • memory/576-3-0x0000000000400000-0x0000000002DAC000-memory.dmp

    Filesize

    41.7MB

  • memory/576-14-0x0000000000400000-0x0000000002DAC000-memory.dmp

    Filesize

    41.7MB

  • memory/2616-10-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2616-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2616-7-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2616-15-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2616-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2876-11-0x0000000000400000-0x0000000002DAC000-memory.dmp

    Filesize

    41.7MB