Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    07-01-2025 10:35

General

  • Target

    JaffaCakes118_5dfcaf4e5871ac873611bd6f471ef2fc.exe

  • Size

    12.8MB

  • MD5

    5dfcaf4e5871ac873611bd6f471ef2fc

  • SHA1

    4e629c67eea486e000f176945c1432db02ff762d

  • SHA256

    f4cfa45ff195fb3fe470b75d9d3c8b6d8a8d8741a6e1401ba5eb494c27dd4090

  • SHA512

    b949db654cc28ae03a1e83953fe608a3990b5dc37d9145ca011d4ba43f0d1d0bc54c18a7c85f648b141230db65d4168701a0ccd0d151ce71b2d4071b201684cb

  • SSDEEP

    6144:kNvMXNc7x72uNJFeTgkYIvpjkHp2e7z+/uyAmMGwDkqyyyyyyyyyyyyyyyyyyyyi:kNvM9i7fNJFeTgk9BjkHp2Euu1mr

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_5dfcaf4e5871ac873611bd6f471ef2fc.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5dfcaf4e5871ac873611bd6f471ef2fc.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3028
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\esnjjlbb\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2240
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wxvfibgr.exe" C:\Windows\SysWOW64\esnjjlbb\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2664
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create esnjjlbb binPath= "C:\Windows\SysWOW64\esnjjlbb\wxvfibgr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5dfcaf4e5871ac873611bd6f471ef2fc.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2760
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description esnjjlbb "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2568
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start esnjjlbb
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2800
    • 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:2600
  • C:\Windows\SysWOW64\esnjjlbb\wxvfibgr.exe
    C:\Windows\SysWOW64\esnjjlbb\wxvfibgr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5dfcaf4e5871ac873611bd6f471ef2fc.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2840
    • 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:2636

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    12.2MB

    MD5

    fd35a954f6ef58000c7fd30b0be6191d

    SHA1

    a86588311578d7c5149b7dc904d86532855e2f7b

    SHA256

    a41fc76f7c7c362dfc6413358f5f108359087da11223ae1333a9869ace3bf055

    SHA512

    4db0f0460fa9b8d6db83274800ec799bd5aa382b659760a0fbe36196eda98b954c2d3ba7e4b69fb245b6261641994b93e0035be04dc2c6dc9714e506866cbf68

  • memory/2636-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2636-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2636-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2636-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2636-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2840-17-0x0000000000400000-0x0000000000784000-memory.dmp

    Filesize

    3.5MB

  • memory/3028-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/3028-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/3028-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/3028-9-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/3028-8-0x0000000000400000-0x0000000000784000-memory.dmp

    Filesize

    3.5MB

  • memory/3028-1-0x0000000000930000-0x0000000000A30000-memory.dmp

    Filesize

    1024KB