Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2024, 17:06

General

  • Target

    de8324c81f580d5f1f3f313224f9cee2.exe

  • Size

    11.4MB

  • MD5

    de8324c81f580d5f1f3f313224f9cee2

  • SHA1

    e0eeaa9e3000f88f3c37c15949bc90cd45a80fab

  • SHA256

    ee9b872015d916a29d3cb56629f02477d60ad22e62013ded3914fd72ea97f966

  • SHA512

    d5ebd3502d271830240fceac7aacf5b2235383584c86917f825191cc351c81b4517df589d98bcc066cbeb8ecdc2108bf57974d0324f107d04e0e19493de1523c

  • SSDEEP

    24576:Wm1111111111111111111111111111111111111111111111111111111111111V:

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.

  • 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\de8324c81f580d5f1f3f313224f9cee2.exe
    "C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2924
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jtqwrirc\
      2⤵
        PID:2996
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ddwjvsrt.exe" C:\Windows\SysWOW64\jtqwrirc\
        2⤵
          PID:2920
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create jtqwrirc binPath= "C:\Windows\SysWOW64\jtqwrirc\ddwjvsrt.exe /d\"C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2608
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description jtqwrirc "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2696
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start jtqwrirc
          2⤵
          • Launches sc.exe
          PID:2624
        • 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:1184
      • C:\Windows\SysWOW64\jtqwrirc\ddwjvsrt.exe
        C:\Windows\SysWOW64\jtqwrirc\ddwjvsrt.exe /d"C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1420
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:2524

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        13.6MB

        MD5

        15955627bb0532349314f9dd256f5625

        SHA1

        358a42d0eb46b601f5f6ccd4a53c1654402f706b

        SHA256

        7d3055e4e20d9b0232ca87992744baeefd6fe0522f8a1b35c82f930f4cd9d9b8

        SHA512

        8ff8c2df63cfed5f8da2c250dd4fc360b2ae5f1d7a5c2529bd83cc644e6a291d25bc8b2ee10f3d19c580495c016d7992ed12f98ac2d8d06686355bfd2f1b7c82

      • C:\Windows\SysWOW64\jtqwrirc\ddwjvsrt.exe

        Filesize

        6.1MB

        MD5

        2b112cfa3c7d070d5c21b6b7712fdde3

        SHA1

        5d3f4810619830b3ca591987d717df1f862a7e29

        SHA256

        46b06219996222655f87edbad59fbf4875c3b25c0b94f13e8a6fcc95453ad7de

        SHA512

        246fb3c00f3658849bd0918c96b23414c0d885c767895dcf65e6a523e1246247ef12213b0af2073269c9e866c692e7975513df957778ecc7e36fc94f54d6e32b

      • memory/1420-9-0x0000000000290000-0x0000000000390000-memory.dmp

        Filesize

        1024KB

      • memory/1420-16-0x0000000000400000-0x0000000002C6D000-memory.dmp

        Filesize

        40.4MB

      • memory/2524-13-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2524-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2524-10-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2524-19-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2524-20-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2524-21-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2924-4-0x0000000000400000-0x0000000002C6D000-memory.dmp

        Filesize

        40.4MB

      • memory/2924-3-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

      • memory/2924-8-0x0000000000400000-0x0000000002C6D000-memory.dmp

        Filesize

        40.4MB

      • memory/2924-1-0x0000000002D80000-0x0000000002E80000-memory.dmp

        Filesize

        1024KB