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Analysis

  • max time kernel
    144s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29/12/2024, 10:44

General

  • Target

    JaffaCakes118_704f5e94f68cb6eab31620994c481bdcc2f99ab2976be6adeabf62900b7e32d2.exe

  • Size

    299KB

  • MD5

    a31d942ddc979a8c1d46608d5aa428ef

  • SHA1

    ddf40346d87a918d13bfe5f378a389c100538c59

  • SHA256

    704f5e94f68cb6eab31620994c481bdcc2f99ab2976be6adeabf62900b7e32d2

  • SHA512

    3ca502da4715b3bb6dc2e3191a87e6d5f89cd4d64fcd4d4c25650b2f554724f60549aab01e3ec15fda6e86b797322077e9663e90bbe0367c91d5238db568ceb0

  • SSDEEP

    6144:rcjMScmcUfbnJRoc904tsKZ4g+8IvhGDNGxty:rcjXf3V04tsKW78ShKGe

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

parubey.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_704f5e94f68cb6eab31620994c481bdcc2f99ab2976be6adeabf62900b7e32d2.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_704f5e94f68cb6eab31620994c481bdcc2f99ab2976be6adeabf62900b7e32d2.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2204
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\huclfhwz\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:536
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\exmrkmjs.exe" C:\Windows\SysWOW64\huclfhwz\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:932
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create huclfhwz binPath= "C:\Windows\SysWOW64\huclfhwz\exmrkmjs.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_704f5e94f68cb6eab31620994c481bdcc2f99ab2976be6adeabf62900b7e32d2.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2976
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description huclfhwz "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2684
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start huclfhwz
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2760
    • 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:2864
  • C:\Windows\SysWOW64\huclfhwz\exmrkmjs.exe
    C:\Windows\SysWOW64\huclfhwz\exmrkmjs.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_704f5e94f68cb6eab31620994c481bdcc2f99ab2976be6adeabf62900b7e32d2.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2876
    • 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:2788

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    13.0MB

    MD5

    db0e95cba57f08fa204dbcda14deb514

    SHA1

    55b53ee4899bb5f2462d87f7622e81a6cf958106

    SHA256

    ab83985262e89b368569072c239dfe50e71cf686e93fa9530e63620931d1bbbc

    SHA512

    ae91e15dfeba44233b75ca7176af807a86a02b5c3f860a41e0b95d8696d6548d79ae2e9334a265b8fabc127eb7001b4da77ae48eb2dc6e207e2e2167cb957e5e

  • memory/2204-7-0x0000000000400000-0x0000000000461000-memory.dmp

    Filesize

    388KB

  • memory/2204-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2204-1-0x0000000000290000-0x0000000000390000-memory.dmp

    Filesize

    1024KB

  • memory/2204-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2204-8-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2204-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2788-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2788-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2788-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2788-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2788-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2876-17-0x0000000000400000-0x0000000000461000-memory.dmp

    Filesize

    388KB