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Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    29/12/2024, 10:48

General

  • Target

    JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe

  • Size

    164KB

  • MD5

    2bb1fbbbed9cc4fadfa75a080379f3fb

  • SHA1

    32c784d175b2c892686d79ef500b3d6a7e286dc9

  • SHA256

    30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c

  • SHA512

    35a409fe79641ad6deeab7176785fb0db9393250fb20f971de0e8ece15dbf20bb36e5593a4b9da0ca1c6c893193aa1a0f160f40c27205dbbbe4dc8bd77d3f409

  • SSDEEP

    3072:nhqXElKGK4Pm2B32eXAH57V3OUQuhS9H6S:ns0l9NXXK7hEa

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.

  • 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_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:516
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wwdmtyhj\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2548
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ybucacku.exe" C:\Windows\SysWOW64\wwdmtyhj\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2040
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create wwdmtyhj binPath= "C:\Windows\SysWOW64\wwdmtyhj\ybucacku.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:524
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description wwdmtyhj "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2772
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start wwdmtyhj
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2788
    • 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:2784
  • C:\Windows\SysWOW64\wwdmtyhj\ybucacku.exe
    C:\Windows\SysWOW64\wwdmtyhj\ybucacku.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2884
    • 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:2892

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    13.4MB

    MD5

    3bb445becfa660319a3e5eb7dbd2d4d4

    SHA1

    26cd67899945ac4074a421f7e8b27ac2805d039a

    SHA256

    532d4948619fd359c815c1a008234b83360d3a953ee26a06233ced82ee08b96b

    SHA512

    10b9449fae4a67e8c8428c774742eca0d05aeb0e7855a96fb28d07ba364397817d38af5505964d3263077efd474d1bdf0e75f6b843500d292411a34430969edf

  • memory/516-3-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/516-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/516-1-0x0000000000520000-0x0000000000620000-memory.dmp

    Filesize

    1024KB

  • memory/516-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/516-9-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2884-17-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2892-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2892-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2892-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2892-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2892-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB