Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    31-08-2024 15:06

General

  • Target

    9d4f75a0010bb641b3429acee75c668c42b991c897a80d6ac4ffe84f2cea44c0.exe

  • Size

    10.9MB

  • MD5

    8ef57b0ee52ad8d343c5febce2c3caf3

  • SHA1

    944e9be261db19754da9c1a097c7ac05f42fb7e9

  • SHA256

    9d4f75a0010bb641b3429acee75c668c42b991c897a80d6ac4ffe84f2cea44c0

  • SHA512

    630fa92ce62e6c9c0e8a6bdda757719c08d9344df5dfbe9867fa775e2d1f71e480e4fd4f6e9d386700f8caefda4577ab230295c209615df493d86c4411dbeb65

  • SSDEEP

    24576:3AWcGx111111111111111111111111111111111111111111111111111111111X:3HH

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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\9d4f75a0010bb641b3429acee75c668c42b991c897a80d6ac4ffe84f2cea44c0.exe
    "C:\Users\Admin\AppData\Local\Temp\9d4f75a0010bb641b3429acee75c668c42b991c897a80d6ac4ffe84f2cea44c0.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2532
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hkjblquy\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2540
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\frysxdqy.exe" C:\Windows\SysWOW64\hkjblquy\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1760
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create hkjblquy binPath= "C:\Windows\SysWOW64\hkjblquy\frysxdqy.exe /d\"C:\Users\Admin\AppData\Local\Temp\9d4f75a0010bb641b3429acee75c668c42b991c897a80d6ac4ffe84f2cea44c0.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2432
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description hkjblquy "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1660
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start hkjblquy
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2856
    • 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:2892
  • C:\Windows\SysWOW64\hkjblquy\frysxdqy.exe
    C:\Windows\SysWOW64\hkjblquy\frysxdqy.exe /d"C:\Users\Admin\AppData\Local\Temp\9d4f75a0010bb641b3429acee75c668c42b991c897a80d6ac4ffe84f2cea44c0.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2776
    • 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:2944

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    13.6MB

    MD5

    532fe57f937a08a88184f664fe4e6fa8

    SHA1

    1a1a010485fe5d483d77f4873ace3913a088a67d

    SHA256

    87111fdee62128438d5bb6382aeeadf2628f2422644606b2f927306647d6050d

    SHA512

    8772c9ac3febdf7766f9bd483d8a9660d3d1eb7a6d5f4e0d353317865fc7ac3bd04ce1b86849c2e8ffca8a6c3f57fa285061caf81ec1534c70d35bdfd3ec6de1

  • memory/2532-8-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/2532-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2532-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2532-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2532-9-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2532-1-0x0000000000600000-0x0000000000700000-memory.dmp

    Filesize

    1024KB

  • memory/2776-16-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/2944-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2944-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2944-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2944-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2944-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB