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Analysis

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

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29/12/2024, 11:50

General

  • Target

    JaffaCakes118_e363711ac1b9775290bd77d2194c0a4da0bea97397ace5db5e6749b4bb0b6b87.exe

  • Size

    243KB

  • MD5

    efb9c0c07fd0dac85d7d7f2366c1cd94

  • SHA1

    92e07b8e7566aa83a096f566070dd5a9d0469b1a

  • SHA256

    e363711ac1b9775290bd77d2194c0a4da0bea97397ace5db5e6749b4bb0b6b87

  • SHA512

    360c1a9b5261fdc3088da3feb28df8866b7f4a5e09ea9e5b66362bee0bc3858620ddeebf0c0f04e3c6fe90068945eab513ff21e6113302363139197bac20325a

  • SSDEEP

    6144:pnZQZPsbbeUbJ676nG7zMjAcuLngy0sXt4Q7Gk:JZTbeUbJ6mAMjT3y0sXKQ

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_e363711ac1b9775290bd77d2194c0a4da0bea97397ace5db5e6749b4bb0b6b87.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e363711ac1b9775290bd77d2194c0a4da0bea97397ace5db5e6749b4bb0b6b87.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2536
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rtprhzkf\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2576
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iupmtssg.exe" C:\Windows\SysWOW64\rtprhzkf\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2696
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create rtprhzkf binPath= "C:\Windows\SysWOW64\rtprhzkf\iupmtssg.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e363711ac1b9775290bd77d2194c0a4da0bea97397ace5db5e6749b4bb0b6b87.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2384
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description rtprhzkf "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2500
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start rtprhzkf
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2816
    • 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:2768
  • C:\Windows\SysWOW64\rtprhzkf\iupmtssg.exe
    C:\Windows\SysWOW64\rtprhzkf\iupmtssg.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e363711ac1b9775290bd77d2194c0a4da0bea97397ace5db5e6749b4bb0b6b87.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2852
    • 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:2880

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    14.7MB

    MD5

    b7d55e8645bab3d7f83b6c0cc86ba9d0

    SHA1

    a6f96d8a66ca1e9760e7a77e52773df7745dcc82

    SHA256

    245a842c6f105178a6eb0189b5906cee4502f990e3adeddc3cf733caf5c606b6

    SHA512

    47c502b4b7454cda9cc04b87f45f77bcc22c98a98e902e78e1b7451862873ae32ffe0937b490b4d745658eb8bc8ce93e6c4a9a3b7427b8ce25575e158f4daa67

  • memory/2536-8-0x0000000000400000-0x000000000044D000-memory.dmp

    Filesize

    308KB

  • memory/2536-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2536-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2536-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2536-9-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2536-1-0x0000000000610000-0x0000000000710000-memory.dmp

    Filesize

    1024KB

  • memory/2852-16-0x0000000000400000-0x000000000044D000-memory.dmp

    Filesize

    308KB

  • memory/2880-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2880-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2880-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2880-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2880-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB