Analysis

  • max time kernel
    147s
  • max time network
    146s
  • 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 00:10

General

  • Target

    JaffaCakes118_7ce7daef52a1c8726226d122f5f8c9233125559a520122df725a9cc95c92bb24.exe

  • Size

    247KB

  • MD5

    d23ae6b656e69571bec33d1d66040b62

  • SHA1

    7fbbda8293662d9ea6c6ce5e93a3f87e6d309ab4

  • SHA256

    7ce7daef52a1c8726226d122f5f8c9233125559a520122df725a9cc95c92bb24

  • SHA512

    9f8f4ba57ef42855038e670a858ff67d9aea9543199cc8028ee1c17d3a3bda389fe15e0f106342cd3f9657f6201d28ac580a039d74b74da09935353c614cadd9

  • SSDEEP

    6144:/LHu867AvjovMgt2tJdzPUywFsDYjOuzbgwu6QigabwVf:K867vltUJdzcywFqunn5

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_7ce7daef52a1c8726226d122f5f8c9233125559a520122df725a9cc95c92bb24.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ce7daef52a1c8726226d122f5f8c9233125559a520122df725a9cc95c92bb24.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1240
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xhpulqh\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2388
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sbksgygp.exe" C:\Windows\SysWOW64\xhpulqh\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2236
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create xhpulqh binPath= "C:\Windows\SysWOW64\xhpulqh\sbksgygp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ce7daef52a1c8726226d122f5f8c9233125559a520122df725a9cc95c92bb24.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:956
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description xhpulqh "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1560
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start xhpulqh
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1140
    • 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:2212
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1240 -s 1200
      2⤵
      • Program crash
      PID:3612
  • C:\Windows\SysWOW64\xhpulqh\sbksgygp.exe
    C:\Windows\SysWOW64\xhpulqh\sbksgygp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ce7daef52a1c8726226d122f5f8c9233125559a520122df725a9cc95c92bb24.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1748
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:1620
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1748 -s 512
      2⤵
      • Program crash
      PID:2408
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1240 -ip 1240
    1⤵
      PID:3204
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1748 -ip 1748
      1⤵
        PID:1332

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        10.2MB

        MD5

        fd3e56c3a13c2e03c2de5b5b99284a6e

        SHA1

        17a1c410fdccbdd55e5984137c085d245cb8ce2b

        SHA256

        365e683a259353e5b2664903617dcdf0a98a96787018657ee76fc5d2897a3854

        SHA512

        8292a9c03c0c6487dcbe6c25d5d1bbc8f493905e77b7dd1ec305707a64028e67cfbaaf966f3825845c315e4553c4b93609b8c270c3268db2040702451abb85d1

      • memory/1240-0-0x0000000002190000-0x000000000219D000-memory.dmp

        Filesize

        52KB

      • memory/1240-1-0x00000000021A0000-0x00000000021B3000-memory.dmp

        Filesize

        76KB

      • memory/1240-2-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/1240-14-0x0000000002190000-0x000000000219D000-memory.dmp

        Filesize

        52KB

      • memory/1240-15-0x00000000021A0000-0x00000000021B3000-memory.dmp

        Filesize

        76KB

      • memory/1240-16-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/1240-13-0x0000000000400000-0x0000000000447000-memory.dmp

        Filesize

        284KB

      • memory/1620-12-0x0000000000400000-0x000000000040E000-memory.dmp

        Filesize

        56KB

      • memory/1620-9-0x0000000000E90000-0x0000000000EA5000-memory.dmp

        Filesize

        84KB

      • memory/1620-19-0x0000000000E90000-0x0000000000EA5000-memory.dmp

        Filesize

        84KB

      • memory/1620-20-0x0000000000E90000-0x0000000000EA5000-memory.dmp

        Filesize

        84KB

      • memory/1748-8-0x0000000000400000-0x0000000000447000-memory.dmp

        Filesize

        284KB

      • memory/1748-18-0x0000000000400000-0x0000000000447000-memory.dmp

        Filesize

        284KB

      • memory/1748-7-0x0000000000400000-0x0000000000447000-memory.dmp

        Filesize

        284KB

      • memory/1748-6-0x0000000000400000-0x0000000000447000-memory.dmp

        Filesize

        284KB