Analysis

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

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-12-2024 15:50

General

  • Target

    JaffaCakes118_94d8164b8e24f05fc9a654c110a8a126816f69554fda6ad4971a6a7a450059b1.exe

  • Size

    160KB

  • MD5

    6ec4ce9ef727b0ce459f8b33a2558946

  • SHA1

    223323ff0bbd014582fe858475493e7786fa75a6

  • SHA256

    94d8164b8e24f05fc9a654c110a8a126816f69554fda6ad4971a6a7a450059b1

  • SHA512

    a4197009bc6dbeb5fc37dc38feca53d3f444a9a3de98fa9e6c5c640a6cab0454ce05b6d58ce4c666e8530f87c7efff22506528b4f9fa8c4120011374a394926a

  • SSDEEP

    3072:Y27J44gMgmR69KfphQ2j11L0Jbudv5aNlXdUMQ:YggmR6oBhQ2j1oqv5aTG

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_94d8164b8e24f05fc9a654c110a8a126816f69554fda6ad4971a6a7a450059b1.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_94d8164b8e24f05fc9a654c110a8a126816f69554fda6ad4971a6a7a450059b1.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4184
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dyjmoohq\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4136
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uejwdyxm.exe" C:\Windows\SysWOW64\dyjmoohq\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4256
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create dyjmoohq binPath= "C:\Windows\SysWOW64\dyjmoohq\uejwdyxm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_94d8164b8e24f05fc9a654c110a8a126816f69554fda6ad4971a6a7a450059b1.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1044
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description dyjmoohq "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2744
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start dyjmoohq
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1456
    • 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:116
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4184 -s 592
      2⤵
      • Program crash
      PID:1996
  • C:\Windows\SysWOW64\dyjmoohq\uejwdyxm.exe
    C:\Windows\SysWOW64\dyjmoohq\uejwdyxm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_94d8164b8e24f05fc9a654c110a8a126816f69554fda6ad4971a6a7a450059b1.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:464
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:3048
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 512
      2⤵
      • Program crash
      PID:220
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4184 -ip 4184
    1⤵
      PID:2724
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 464 -ip 464
      1⤵
        PID:2036

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        11.1MB

        MD5

        0d6017bf380b32059df269f872266984

        SHA1

        9cfe0365901ff8577c01610a076409be634358a4

        SHA256

        295212fbb918cddf8651f65c6058a6d0794c7ccad36cabfcf2b610f22f4db058

        SHA512

        0285ed957049eb866cb57177e019a77a0f00dd33ed818f9300e7b77f1cb4e2382a5b2a6353047208924ee31f2b858bc375b82b9b524fd6b4f172843a3c6d6980

      • memory/464-6-0x0000000000400000-0x000000000042F000-memory.dmp

        Filesize

        188KB

      • memory/464-13-0x0000000000400000-0x000000000042F000-memory.dmp

        Filesize

        188KB

      • memory/464-7-0x0000000000400000-0x000000000042F000-memory.dmp

        Filesize

        188KB

      • memory/3048-8-0x0000000000480000-0x0000000000495000-memory.dmp

        Filesize

        84KB

      • memory/3048-14-0x0000000000480000-0x0000000000495000-memory.dmp

        Filesize

        84KB

      • memory/3048-15-0x0000000000480000-0x0000000000495000-memory.dmp

        Filesize

        84KB

      • memory/4184-2-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4184-1-0x0000000002180000-0x0000000002193000-memory.dmp

        Filesize

        76KB

      • memory/4184-12-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4184-11-0x0000000002180000-0x0000000002193000-memory.dmp

        Filesize

        76KB

      • memory/4184-10-0x0000000000400000-0x000000000042F000-memory.dmp

        Filesize

        188KB

      • memory/4184-0-0x0000000002170000-0x000000000217D000-memory.dmp

        Filesize

        52KB