Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-01-2025 15:52

General

  • Target

    JaffaCakes118_cc3390920c32fc29ee73813ff463177d.exe

  • Size

    12.8MB

  • MD5

    cc3390920c32fc29ee73813ff463177d

  • SHA1

    f72379702f9604c605c150c7a7c56c48be09ae76

  • SHA256

    3be7a437a1eb7a1fac8c7b74bffbbf3ed758f0346329fd0ff835b94259f9a79d

  • SHA512

    b09f38c401d3625b7a22a3cd97d57b9603b48ca942fc6f61335949a6695eb43f84db85714d8bc5dd21467948afa6dd61f40c13c26aa95d158237077ece1de54e

  • SSDEEP

    196608:Dxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx5:

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_cc3390920c32fc29ee73813ff463177d.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cc3390920c32fc29ee73813ff463177d.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3840
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cprqbtv\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1804
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fgeorkpa.exe" C:\Windows\SysWOW64\cprqbtv\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1384
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create cprqbtv binPath= "C:\Windows\SysWOW64\cprqbtv\fgeorkpa.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cc3390920c32fc29ee73813ff463177d.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4640
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description cprqbtv "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2336
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start cprqbtv
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4984
    • 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:2544
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3840 -s 892
      2⤵
      • Program crash
      PID:1200
  • C:\Windows\SysWOW64\cprqbtv\fgeorkpa.exe
    C:\Windows\SysWOW64\cprqbtv\fgeorkpa.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cc3390920c32fc29ee73813ff463177d.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1196
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2400
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1196 -s 532
      2⤵
      • Program crash
      PID:2408
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3840 -ip 3840
    1⤵
      PID:4932
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1196 -ip 1196
      1⤵
        PID:1064

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        12.5MB

        MD5

        1223eaef000ee220b9c830cf29358586

        SHA1

        e6adcbe746038145d8ad5962ee2d673dfb2f5d4d

        SHA256

        fd33f37f68f569333e2e4d006b8659a6493a042580bb276642cf47a2bfaca643

        SHA512

        42f1ae588f4f5d9cabfe3c8859308ef972f96ee65279a49dedb62385f0361183172b9ace8407075a343b2d79bb137d8efbe7996527dcad58fbbb056f4d6f3aaf

      • memory/1196-14-0x0000000000400000-0x0000000002F06000-memory.dmp

        Filesize

        43.0MB

      • memory/2400-10-0x0000000000850000-0x0000000000865000-memory.dmp

        Filesize

        84KB

      • memory/2400-12-0x0000000000850000-0x0000000000865000-memory.dmp

        Filesize

        84KB

      • memory/2400-13-0x0000000000850000-0x0000000000865000-memory.dmp

        Filesize

        84KB

      • memory/3840-0-0x0000000004B10000-0x0000000004B1D000-memory.dmp

        Filesize

        52KB

      • memory/3840-1-0x0000000004B20000-0x0000000004B33000-memory.dmp

        Filesize

        76KB

      • memory/3840-2-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3840-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3840-8-0x0000000004B20000-0x0000000004B33000-memory.dmp

        Filesize

        76KB

      • memory/3840-7-0x0000000004B10000-0x0000000004B1D000-memory.dmp

        Filesize

        52KB

      • memory/3840-6-0x0000000000400000-0x0000000002F06000-memory.dmp

        Filesize

        43.0MB