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Analysis

  • max time kernel
    148s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    18/03/2024, 15:08

General

  • Target

    d3d0c67da718de678206c8e774c6d30c.exe

  • Size

    14.6MB

  • MD5

    d3d0c67da718de678206c8e774c6d30c

  • SHA1

    b2b4039df080b6ad64d6a886ac4b29c76fcd1a37

  • SHA256

    916ed7d444a4233ca18d621514bc9a419608860fa3d13d1aef060d9e034bceb1

  • SHA512

    2647deb5b80f83d8d8f6a7f47e393fea4e57299703ba7458aba84317a5694eb5e70ea038342bdd60de5370b6fabb8685582c3e2115ca5fb1c4867af2b97b3974

  • SSDEEP

    49152:r66666666666666666666666666666666666666666666666666666666666666/:

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.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\d3d0c67da718de678206c8e774c6d30c.exe
    "C:\Users\Admin\AppData\Local\Temp\d3d0c67da718de678206c8e774c6d30c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1932
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\narfwhma\
      2⤵
        PID:1784
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\laeiylcc.exe" C:\Windows\SysWOW64\narfwhma\
        2⤵
          PID:1608
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create narfwhma binPath= "C:\Windows\SysWOW64\narfwhma\laeiylcc.exe /d\"C:\Users\Admin\AppData\Local\Temp\d3d0c67da718de678206c8e774c6d30c.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2952
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description narfwhma "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2572
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start narfwhma
          2⤵
          • Launches sc.exe
          PID:2560
        • 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:2496
      • C:\Windows\SysWOW64\narfwhma\laeiylcc.exe
        C:\Windows\SysWOW64\narfwhma\laeiylcc.exe /d"C:\Users\Admin\AppData\Local\Temp\d3d0c67da718de678206c8e774c6d30c.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2584
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:2532

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        9.1MB

        MD5

        a19f5bf65fb69a51e5ab803764866bed

        SHA1

        3570d9b051a324c7c2c347bb31eec0e361c1aa53

        SHA256

        47a91b904e8bcc11b923a0dc6f929ee7f0485999edd2b96987f2fafd2c3e5f97

        SHA512

        ca77d0d2df1556914913db4804c66373495f52da61e5e051c4a0f8fbb6c1713fc210c20552dcbce4c1870d94cee9290087e92bdae1875cbbc02162f4052d93c4

      • C:\Windows\SysWOW64\narfwhma\laeiylcc.exe

        Filesize

        2.5MB

        MD5

        f665bfc55d516f4fedb437a9442d59d7

        SHA1

        49ef0118c2d7c40abd10b0268c9a52b658a6e34f

        SHA256

        670eeddfe3f17a268072a769f21119f992b377624f446382f88b1ef0fef279d3

        SHA512

        3de8720e279e981d4789e5d8696465b7542b6b6e4beed9a6d47ba2d82bdac2b4721ede0aa9fe47a8648dc04dd9047a9434ead987eb559f4bbf952fec94373e2f

      • memory/1932-1-0x0000000000D50000-0x0000000000E50000-memory.dmp

        Filesize

        1024KB

      • memory/1932-3-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

      • memory/1932-4-0x0000000000400000-0x0000000000C0A000-memory.dmp

        Filesize

        8.0MB

      • memory/1932-7-0x0000000000400000-0x0000000000C0A000-memory.dmp

        Filesize

        8.0MB

      • memory/2532-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2532-10-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2532-13-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2532-19-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2532-20-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2532-21-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2584-9-0x0000000000D20000-0x0000000000E20000-memory.dmp

        Filesize

        1024KB

      • memory/2584-15-0x0000000000400000-0x0000000000C0A000-memory.dmp

        Filesize

        8.0MB

      • memory/2584-17-0x0000000000400000-0x0000000000C0A000-memory.dmp

        Filesize

        8.0MB