Analysis

  • max time kernel
    146s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/07/2024, 22:23

General

  • Target

    3f1b7aa146a77bf2b405b38e0cf62df1_JaffaCakes118.exe

  • Size

    13.9MB

  • MD5

    3f1b7aa146a77bf2b405b38e0cf62df1

  • SHA1

    2fc056586e9b126a845916e2f3f44093745fab97

  • SHA256

    e3a222160ea8ef3a551466e2307177cbba020d448a1c987810873aff2dfc217c

  • SHA512

    89a6a7204348648067827fb0baf36f188139b40466e71e39834650574b28b5e9257d6ad829fab082ae1a159b79d48e7b4d3fcfc1803086f6be8d5ecb1b9cd202

  • SSDEEP

    196608:z3qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq3:z

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3f1b7aa146a77bf2b405b38e0cf62df1_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3f1b7aa146a77bf2b405b38e0cf62df1_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1592
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cerzsspq\
      2⤵
        PID:2780
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\adwecemw.exe" C:\Windows\SysWOW64\cerzsspq\
        2⤵
          PID:2884
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create cerzsspq binPath= "C:\Windows\SysWOW64\cerzsspq\adwecemw.exe /d\"C:\Users\Admin\AppData\Local\Temp\3f1b7aa146a77bf2b405b38e0cf62df1_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3408
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description cerzsspq "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:960
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start cerzsspq
          2⤵
          • Launches sc.exe
          PID:644
        • 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
          PID:3980
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1592 -s 1044
          2⤵
          • Program crash
          PID:4496
      • C:\Windows\SysWOW64\cerzsspq\adwecemw.exe
        C:\Windows\SysWOW64\cerzsspq\adwecemw.exe /d"C:\Users\Admin\AppData\Local\Temp\3f1b7aa146a77bf2b405b38e0cf62df1_JaffaCakes118.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:648
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Deletes itself
          PID:3940
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 648 -s 516
          2⤵
          • Program crash
          PID:3260
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1592 -ip 1592
        1⤵
          PID:888
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 648 -ip 648
          1⤵
            PID:1148

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            10.4MB

            MD5

            f9edefbec9b86a439939d1ef0dff237f

            SHA1

            075fb6da0dd9a87139ccfd42b7ff6848a8ec2d3b

            SHA256

            8e1f91236b81edfec4160211865c19a6f4c8a0805bff7befd636fa7ac94dec0a

            SHA512

            f8e7444a7b8463a386e357a656abaaeb6c19b1cc76968ffe77a8d370a8aa30f69f5edca24bd4ec219dcd7b6861de06399adfb3722e4b0c089f6296ec330c4569

          • memory/648-11-0x0000000000400000-0x0000000000871000-memory.dmp

            Filesize

            4.4MB

          • memory/648-17-0x0000000000400000-0x0000000000871000-memory.dmp

            Filesize

            4.4MB

          • memory/648-12-0x0000000000400000-0x0000000000871000-memory.dmp

            Filesize

            4.4MB

          • memory/1592-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

            Filesize

            76KB

          • memory/1592-10-0x0000000000400000-0x0000000000415000-memory.dmp

            Filesize

            84KB

          • memory/1592-1-0x0000000000B70000-0x0000000000C70000-memory.dmp

            Filesize

            1024KB

          • memory/1592-8-0x0000000000400000-0x0000000000871000-memory.dmp

            Filesize

            4.4MB

          • memory/1592-4-0x0000000000400000-0x0000000000415000-memory.dmp

            Filesize

            84KB

          • memory/1592-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

            Filesize

            76KB

          • memory/3940-15-0x0000000000DB0000-0x0000000000DC5000-memory.dmp

            Filesize

            84KB

          • memory/3940-13-0x0000000000DB0000-0x0000000000DC5000-memory.dmp

            Filesize

            84KB

          • memory/3940-16-0x0000000000DB0000-0x0000000000DC5000-memory.dmp

            Filesize

            84KB