Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    26/03/2024, 12:12

General

  • Target

    df22722085baaf84cd07e5d92b7ac69a.exe

  • Size

    10.5MB

  • MD5

    df22722085baaf84cd07e5d92b7ac69a

  • SHA1

    9be3215a254149267f6477c8e3e64d18aef0e38d

  • SHA256

    e801ec0c491f33580b9474ab6e202b18f6952d48b69019a9c4ed48c279c5cf33

  • SHA512

    c804dcc3643d69d1a4c330eafddd39e043584220d907d42e7dfeb353f5bc67e0fc0d1614e4e769b1d25b627cbe413369bb13e81243b3d25add5b8ad371589531

  • SSDEEP

    49152:Z88888888888888888888888888888888888888888888888888888888888888f:

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\df22722085baaf84cd07e5d92b7ac69a.exe
    "C:\Users\Admin\AppData\Local\Temp\df22722085baaf84cd07e5d92b7ac69a.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3036
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ixlsfvbf\
      2⤵
        PID:3032
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pkzjotlj.exe" C:\Windows\SysWOW64\ixlsfvbf\
        2⤵
          PID:2620
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ixlsfvbf binPath= "C:\Windows\SysWOW64\ixlsfvbf\pkzjotlj.exe /d\"C:\Users\Admin\AppData\Local\Temp\df22722085baaf84cd07e5d92b7ac69a.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2704
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ixlsfvbf "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2528
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ixlsfvbf
          2⤵
          • Launches sc.exe
          PID:2832
        • 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:2548
      • C:\Windows\SysWOW64\ixlsfvbf\pkzjotlj.exe
        C:\Windows\SysWOW64\ixlsfvbf\pkzjotlj.exe /d"C:\Users\Admin\AppData\Local\Temp\df22722085baaf84cd07e5d92b7ac69a.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2468
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:652

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        10.3MB

        MD5

        fe530ab617a30dd01218b5f2cc3a5cfd

        SHA1

        ceea36060fb7f4b9b33cec3383935fc84cc7af8a

        SHA256

        a9e652f019965eb1a797b369c72031072961acfe5db072f2024387a8de30c5e3

        SHA512

        4d41c92a912e864b1ae0ecaffd6ee45fd383ef940634a8ce363694898f79e315ba1ebf71bf8b0927561b4b15dd527a0894a91d54d35b9f3e2ed1ecbfcac04f72

      • C:\Windows\SysWOW64\ixlsfvbf\pkzjotlj.exe

        Filesize

        1.2MB

        MD5

        054bf43724b35d3cef24331dfeaefa3c

        SHA1

        3f8898e8964518164a14312c6112083ff8663663

        SHA256

        b85ab20b7c88500e6d7657e0c4fb110ddec66ee02aa82aaca41573628a6cae02

        SHA512

        7485c1e2149ed31b38639fd3bcedc80558a9cef73bdf852b4a4df41ec27c9eb2d183699b6d8051f688c3214e233d55024f7cfdc3819448ce38f1c5546a22e59c

      • memory/652-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/652-13-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/652-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/652-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/652-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/652-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

      • memory/652-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2468-9-0x0000000002DD0000-0x0000000002ED0000-memory.dmp

        Filesize

        1024KB

      • memory/2468-18-0x0000000000400000-0x0000000002C68000-memory.dmp

        Filesize

        40.4MB

      • memory/2468-16-0x0000000000400000-0x0000000002C68000-memory.dmp

        Filesize

        40.4MB

      • memory/3036-4-0x0000000000400000-0x0000000002C68000-memory.dmp

        Filesize

        40.4MB

      • memory/3036-1-0x0000000002DA0000-0x0000000002EA0000-memory.dmp

        Filesize

        1024KB

      • memory/3036-2-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

      • memory/3036-6-0x0000000000400000-0x0000000002C68000-memory.dmp

        Filesize

        40.4MB