Analysis

  • max time kernel
    1s
  • max time network
    90s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/01/2024, 03:47

General

  • Target
    4a5be414954dcf03646813f815811f9a.exe
  • Size 126KB
  • Sample240108-ecm2daaegj
  • SHA256 1af2b29be3299ab755ae9cc7bd65892be012fa106683c530254a6201dfdc235e
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 7 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4a5be414954dcf03646813f815811f9a.exe
    "C:\Users\Admin\AppData\Local\Temp\4a5be414954dcf03646813f815811f9a.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4996
    • C:\Windows\SysWOW64\Regsvr32.exe
      Regsvr32 /s C:\Windows\system32\MSWINSCK.OCX
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:5028
    • C:\Windows\SysWOW64\1024\SVCHOST.EXE
      C:\Windows\system32\1024\SVCHOST.EXE
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Modifies Internet Explorer settings
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3388
  • C:\Windows\SysWOW64\cmd.exe
    cmd /c "C:\Windows\SysWOW64\1024\SVCHOST.exe" "C:\Windows\system32\1024\SVCHOST.EXE"
    1⤵
      PID:4360
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c "C:\Windows\SysWOW64\1024\SVCHOST.exe" "C:\Windows\system32\1024\SVCHOST.EXE"
      1⤵
        PID:3512
      • C:\Windows\SysWOW64\1024\SVCHOST.EXE
        C:\Windows\system32\1024\SVCHOST.EXE -sysrun
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetWindowsHookEx
        PID:116

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            SVCHOST.EXE

            • Path C:\Windows\SysWOW64\1024\SVCHOST.EXE
            • Size 49KB
            • SHA256 3db08ea4bc5fc7141cc0d9d29815be43172ffdf46be06a481934fb29ac312421
            • MD5 SHA1 SHA512 SSDEEP

            SVCHOST.EXE

            • Path C:\Windows\SysWOW64\1024\SVCHOST.EXE
            • Size 64KB
            • SHA256 6a12bf9016e12ce807dafe22f59e71568d5de36c3581610fb93867ff896ad5d1
            • MD5 SHA1 SHA512 SSDEEP

            SVCHOST.EXE

            • Path C:\Windows\SysWOW64\1024\SVCHOST.EXE
            • Size 32KB
            • SHA256 5bac2cb9e0aa694949ca751c3206769e68f29326f5e7d7526de98c97ed5e5734
            • MD5 SHA1 SHA512 SSDEEP

            MSWINSCK.OCX

            • Path C:\Windows\SysWOW64\MSWINSCK.OCX
            • Size 60KB
            • SHA256 1e554d0b8d2fa1553c6f2edf1a03c7ee445b343dbca5a2893029ec7d6cb023eb
            • MD5 SHA1 SHA512 SSDEEP

            MSWINSCK.OCX

            • Path C:\Windows\SysWOW64\MSWINSCK.OCX
            • Size 38KB
            • SHA256 869d7ba1cad348472ac3d453bf98d20572ff57b7300b9d1749fc4c559795f8bb
            • MD5 SHA1 SHA512 SSDEEP

            MSWINSCK.OCX

            • Path C:\Windows\SysWOW64\MSWINSCK.OCX
            • Size 36KB
            • SHA256 8aeda5fffdea52521bbbc08df8870bbc696419ea9b0eca21d9868538eea09a0a
            • MD5 SHA1 SHA512 SSDEEP

            MSWINSCK.OCX

            • Path C:\Windows\SysWOW64\MSWINSCK.OCX
            • Size 19KB
            • SHA256 35d99275116e4709f1c3f6c1d6b4f58983bb447b106a1ce9474967910da00664
            • MD5 SHA1 SHA512 SSDEEP

            memory/4996-0-0x0000000000400000-0x0000000000453000-memory.dmp

            memory/4996-17-0x0000000000400000-0x0000000000453000-memory.dmp