Analysis

  • max time kernel
    145s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13/03/2024, 09:41

General

  • Target

    c58c41fb9de90f13223980a5147fdf71.exe

  • Size

    14.5MB

  • MD5

    c58c41fb9de90f13223980a5147fdf71

  • SHA1

    2e98477e74a0af057086b7161a3fbadb188df450

  • SHA256

    f1698aadacb8433276f1e225a8c00f0311d6bb2b721e40e2f88e4fecc3d6cd3e

  • SHA512

    f725e97b5bd5729318ab8dedc4a259b53ead052f39e0fbc2d65172a2afde65e1d01a4c0e36ef7f68c14086ef79cae2b973e56cf27952a0700474506097d63f5b

  • SSDEEP

    24576:0ATa7/2ggggggggggggggggggggggggggggggggggggggggggggggggggggggggr:0A27

Malware Config

Extracted

Family

tofsee

C2

176.111.174.19

defeatwax.ru

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs 1 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • 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).

  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.exe
    "C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2884
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hhmdterx\
      2⤵
        PID:2896
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jgzopasf.exe" C:\Windows\SysWOW64\hhmdterx\
        2⤵
          PID:1856
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create hhmdterx binPath= "C:\Windows\SysWOW64\hhmdterx\jgzopasf.exe /d\"C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2568
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description hhmdterx "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2696
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start hhmdterx
          2⤵
          • Launches sc.exe
          PID:2564
        • 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
          PID:2704
      • C:\Windows\SysWOW64\hhmdterx\jgzopasf.exe
        C:\Windows\SysWOW64\hhmdterx\jgzopasf.exe /d"C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2784
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:2700

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              10.6MB

              MD5

              2529655477b4192aae0f3f034a999a0a

              SHA1

              d6d6e8f5550d79995d6d5de6618c375a0aff57e5

              SHA256

              aff3d242ddc20be5b26dfb3d0ea4445bfca0fc67dd7a0c4dfc9f95b0aa7abcb6

              SHA512

              d2d5291c5578ed10278d3c60819e3753a7d2d7ba02650e9d25fd2b2f4842a9adcd573f56d7b3c2f0c43894b77564d80ef9fa11a83664b14992513e57de2d7fe5

            • memory/2700-13-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2700-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2700-18-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2700-10-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2700-19-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2700-20-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2784-9-0x0000000000A80000-0x0000000000B80000-memory.dmp

              Filesize

              1024KB

            • memory/2784-15-0x0000000000400000-0x000000000099D000-memory.dmp

              Filesize

              5.6MB

            • memory/2784-17-0x0000000000400000-0x000000000099D000-memory.dmp

              Filesize

              5.6MB

            • memory/2884-4-0x0000000000400000-0x000000000099D000-memory.dmp

              Filesize

              5.6MB

            • memory/2884-1-0x00000000002B0000-0x00000000003B0000-memory.dmp

              Filesize

              1024KB

            • memory/2884-8-0x0000000000400000-0x000000000099D000-memory.dmp

              Filesize

              5.6MB

            • memory/2884-3-0x00000000001B0000-0x00000000001C3000-memory.dmp

              Filesize

              76KB