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Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/12/2024, 01:24

General

  • Target

    JaffaCakes118_e8cd082dad812bd35b097e5af74fe682a4f25b0a22d2aec37b76f5949c31f44b.exe

  • Size

    185KB

  • MD5

    d27b2ce9b4ed5d0a7451ef9e8d099aaf

  • SHA1

    bc45234704d9ee0b4c7aee62252bd3e2fc1f93ac

  • SHA256

    e8cd082dad812bd35b097e5af74fe682a4f25b0a22d2aec37b76f5949c31f44b

  • SHA512

    3845388ef1ef7afc26885461ec312247507195e8f8c5a4d918bb66bf90bc9bac774edb36ce93a9d9e01f05eb293e82681403f71050bdcd84effd55990224accd

  • SSDEEP

    3072:27nDIxHSknMqtvpOc/6isHRrIcSzAhHr1PFTGa7Q6uBbVggjcGkNIVqIF:0IxykNpOcivxrzVhHD707ITsq

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
  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Program crash 2 IoCs
  • 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 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8cd082dad812bd35b097e5af74fe682a4f25b0a22d2aec37b76f5949c31f44b.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8cd082dad812bd35b097e5af74fe682a4f25b0a22d2aec37b76f5949c31f44b.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\svucswxm\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4004
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sxhxlq.exe" C:\Windows\SysWOW64\svucswxm\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3988
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create svucswxm binPath= "C:\Windows\SysWOW64\svucswxm\sxhxlq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8cd082dad812bd35b097e5af74fe682a4f25b0a22d2aec37b76f5949c31f44b.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3488
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description svucswxm "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:548
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start svucswxm
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1588
    • 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:3792
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2024 -s 1256
      2⤵
      • Program crash
      PID:5032
  • C:\Windows\SysWOW64\svucswxm\sxhxlq.exe
    C:\Windows\SysWOW64\svucswxm\sxhxlq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e8cd082dad812bd35b097e5af74fe682a4f25b0a22d2aec37b76f5949c31f44b.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1428
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:1236
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1428 -s 532
      2⤵
      • Program crash
      PID:1584
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2024 -ip 2024
    1⤵
      PID:5060
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1428 -ip 1428
      1⤵
        PID:4780

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        14.4MB

        MD5

        4e7176a38174bbae64e9a50742992ef0

        SHA1

        4f0cae037da6c8f4765e081d00acf6c0bfafbc85

        SHA256

        012a119a1141dee02c6e1b4f9f72661fa1042d34ab48822cadfe65a811ec5832

        SHA512

        add461acbb5a39ac39c8d8b25476a8998b01dd0e1643bd2d25ddf688e36b59dbdcd68a34965ac9ceb1f9a59f72eef533061e65aab6208510114132a0f186b0e4

      • memory/1236-14-0x00000000009E0000-0x00000000009F5000-memory.dmp

        Filesize

        84KB

      • memory/1236-12-0x00000000009E0000-0x00000000009F5000-memory.dmp

        Filesize

        84KB

      • memory/1236-15-0x00000000009E0000-0x00000000009F5000-memory.dmp

        Filesize

        84KB

      • memory/1428-11-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/1428-10-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/1428-16-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2024-2-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2024-1-0x0000000002190000-0x00000000021A3000-memory.dmp

        Filesize

        76KB

      • memory/2024-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2024-8-0x0000000002190000-0x00000000021A3000-memory.dmp

        Filesize

        76KB

      • memory/2024-7-0x0000000002180000-0x000000000218D000-memory.dmp

        Filesize

        52KB

      • memory/2024-6-0x0000000000400000-0x0000000000438000-memory.dmp

        Filesize

        224KB

      • memory/2024-0-0x0000000002180000-0x000000000218D000-memory.dmp

        Filesize

        52KB