Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-09-2024 01:35

General

  • Target

    29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe

  • Size

    13.5MB

  • MD5

    46912015f4e217c84f81982305c8c6d5

  • SHA1

    ba7ccd3f4668126eed2a609eb6ac489e9893b78a

  • SHA256

    29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e

  • SHA512

    83900686d98969d7a00a1b78a3e1f7aeba2b95d8f931f412787a03fd32d87dfbfeb1d0506b2a2190254b0fa88e235264e58374b353d0a5c68f0c299f7782b17e

  • SSDEEP

    49152:fyzapZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZx:fC

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.

  • 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\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe
    "C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4988
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pozftddj\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2968
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tinoiqtm.exe" C:\Windows\SysWOW64\pozftddj\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1908
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create pozftddj binPath= "C:\Windows\SysWOW64\pozftddj\tinoiqtm.exe /d\"C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1540
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description pozftddj "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2584
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start pozftddj
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:740
    • 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:1924
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 1268
      2⤵
      • Program crash
      PID:848
  • C:\Windows\SysWOW64\pozftddj\tinoiqtm.exe
    C:\Windows\SysWOW64\pozftddj\tinoiqtm.exe /d"C:\Users\Admin\AppData\Local\Temp\29b0f91a35ae86daabb6e62bde864cf514549d1d3e9f0fa453521fccd389d51e.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4460
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:1912
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 512
      2⤵
      • Program crash
      PID:2412
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 4988 -ip 4988
    1⤵
      PID:2616
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4460 -ip 4460
      1⤵
        PID:1120

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        12.1MB

        MD5

        c819c4f2e4c10227c5dca3ab67e19bda

        SHA1

        4357d4d60c8d4d5728340cfac7ba1e9a7ee3428f

        SHA256

        c7c0c8ae2366ef73c263fc7c39a874fc8f818920e89633b4ef7188e4ffe17472

        SHA512

        f08ac3424c3bfec9d75c1579a6f74bb9a1f227a3091a4b279e0d56ed5e3b535ce942a600288835c32b6ffe25a205ceaea34b32e9b094180478224e90dbe02b2c

      • memory/1912-11-0x0000000000830000-0x0000000000845000-memory.dmp

        Filesize

        84KB

      • memory/1912-13-0x0000000000830000-0x0000000000845000-memory.dmp

        Filesize

        84KB

      • memory/1912-15-0x0000000000830000-0x0000000000845000-memory.dmp

        Filesize

        84KB

      • memory/4460-14-0x0000000000400000-0x00000000016BD000-memory.dmp

        Filesize

        18.7MB

      • memory/4460-16-0x0000000000400000-0x00000000016BD000-memory.dmp

        Filesize

        18.7MB

      • memory/4988-1-0x0000000001790000-0x0000000001890000-memory.dmp

        Filesize

        1024KB

      • memory/4988-2-0x0000000003400000-0x0000000003413000-memory.dmp

        Filesize

        76KB

      • memory/4988-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4988-10-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/4988-9-0x0000000003400000-0x0000000003413000-memory.dmp

        Filesize

        76KB

      • memory/4988-8-0x0000000000400000-0x00000000016BD000-memory.dmp

        Filesize

        18.7MB