Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 01:26

General

  • Target

    f3ac9b8dee459898ff653a9ee6f5056b716ae7e4d880d1e4d3aa2f09dccad691.exe

  • Size

    923KB

  • MD5

    3c105635371528e1027593857051e4d6

  • SHA1

    d14d696e1989294cd89937b377780a30f9b1eb76

  • SHA256

    f3ac9b8dee459898ff653a9ee6f5056b716ae7e4d880d1e4d3aa2f09dccad691

  • SHA512

    28c76cdb0d2b12d62cee0941b0aa080e27f7628a8f9c0d0b077c4a62effe46f4e35d6888f2fd221042ebee3e13447f65da9fd0cea0fa049cc9087bdb557c2a5b

  • SSDEEP

    6144:mpqoa8aLKC/2OLSAN7gNVpNleQUohBfGPOtQciXeL/XYqGlebojSP2pjNhcAYnCP:mpqKC/2OGAtkCP4cejGSOpRK3CnIiv

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies Internet Explorer settings 1 TTPs 5 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f3ac9b8dee459898ff653a9ee6f5056b716ae7e4d880d1e4d3aa2f09dccad691.exe
    "C:\Users\Admin\AppData\Local\Temp\f3ac9b8dee459898ff653a9ee6f5056b716ae7e4d880d1e4d3aa2f09dccad691.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops autorun.inf file
    • Modifies Internet Explorer settings
    • Modifies Internet Explorer start page
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1624
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /C AT /delete /yes
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:992
      • C:\Windows\SysWOW64\at.exe
        AT /delete /yes
        3⤵
          PID:1580
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Users\Admin\Desktop\system3_.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1252
        • C:\Windows\SysWOW64\at.exe
          AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Users\Admin\Desktop\system3_.exe
          3⤵
            PID:1612
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /C cacls "C:\system volume information" /e /g "Admin":f
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1036
          • C:\Windows\SysWOW64\cacls.exe
            cacls "C:\system volume information" /e /g "Admin":f
            3⤵
              PID:564

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/564-63-0x0000000000000000-mapping.dmp

        • memory/992-55-0x0000000000000000-mapping.dmp

        • memory/1036-62-0x0000000000000000-mapping.dmp

        • memory/1252-58-0x0000000000000000-mapping.dmp

        • memory/1580-56-0x0000000000000000-mapping.dmp

        • memory/1612-59-0x0000000000000000-mapping.dmp

        • memory/1624-54-0x0000000076041000-0x0000000076043000-memory.dmp

          Filesize

          8KB

        • memory/1624-61-0x0000000000400000-0x00000000004E1000-memory.dmp

          Filesize

          900KB

        • memory/1624-64-0x0000000000400000-0x00000000004E1000-memory.dmp

          Filesize

          900KB