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Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2024, 01:09

General

  • Target

    JaffaCakes118_dd9c4385fc60b66787f053905a3b64f0aea756f985cfcea9fe1b8d44ded821e6.exe

  • Size

    316KB

  • MD5

    6e429866ebb90b7584e2ff0b07e20940

  • SHA1

    4f6f8aca65c4a1276424ff4689c67ded7df61da1

  • SHA256

    dd9c4385fc60b66787f053905a3b64f0aea756f985cfcea9fe1b8d44ded821e6

  • SHA512

    8b8cd1beda47812676b7288e254183b8084c7d4bcb02ad149a7c5ed763898b25b81e94a27f6d9b2cb9caed745ebd2bb1608ddcdf4aec8f669898f71364e9b35d

  • SSDEEP

    6144:0PCx2eJABZX5sTWQ3J+fX/8wOeIIDLY493GLMLI2fsS:oCx2W+X5sTWQ5+fX/8wOeIIDLY495LI

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.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\JaffaCakes118_dd9c4385fc60b66787f053905a3b64f0aea756f985cfcea9fe1b8d44ded821e6.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dd9c4385fc60b66787f053905a3b64f0aea756f985cfcea9fe1b8d44ded821e6.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2516
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kgxsxmbb\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:108
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kcubarcj.exe" C:\Windows\SysWOW64\kgxsxmbb\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1792
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create kgxsxmbb binPath= "C:\Windows\SysWOW64\kgxsxmbb\kcubarcj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dd9c4385fc60b66787f053905a3b64f0aea756f985cfcea9fe1b8d44ded821e6.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1972
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description kgxsxmbb "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2812
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start kgxsxmbb
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2972
    • 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:2744
  • C:\Windows\SysWOW64\kgxsxmbb\kcubarcj.exe
    C:\Windows\SysWOW64\kgxsxmbb\kcubarcj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dd9c4385fc60b66787f053905a3b64f0aea756f985cfcea9fe1b8d44ded821e6.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2736
    • 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:2832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    12.3MB

    MD5

    82cd4b3d2f81f7758f130e81f86b5f6b

    SHA1

    73dd29dee11c414d1d8453d40ad4dc75f389e6dc

    SHA256

    b16ecff45beceb3c7607f6a22b4e3330a0924d8ef1611867d76875a01235ab41

    SHA512

    165b57fff24dbe4e469b6a7978a1aaff591d721295bdd5969879209a08e0bf2a3686982076ff13e960ecbb000504df50d43eb2f14588491d8ba90a65f1292269

  • memory/2516-1-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

    Filesize

    1024KB

  • memory/2516-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2516-4-0x0000000000400000-0x0000000002776000-memory.dmp

    Filesize

    35.5MB

  • memory/2516-7-0x0000000000400000-0x0000000002776000-memory.dmp

    Filesize

    35.5MB

  • memory/2516-8-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2736-16-0x0000000000400000-0x0000000002776000-memory.dmp

    Filesize

    35.5MB

  • memory/2832-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2832-10-0x0000000000100000-0x0000000000115000-memory.dmp

    Filesize

    84KB

  • memory/2832-13-0x0000000000100000-0x0000000000115000-memory.dmp

    Filesize

    84KB

  • memory/2832-15-0x0000000000100000-0x0000000000115000-memory.dmp

    Filesize

    84KB

  • memory/2832-17-0x0000000000100000-0x0000000000115000-memory.dmp

    Filesize

    84KB