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Analysis

  • max time kernel
    151s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/11/2022, 15:45

General

  • Target

    3a7ed12eea1046eef1d722ed6873fe6f614bdc23d884bc021d78d41e37c0f14e.exe

  • Size

    434KB

  • MD5

    0e6d2f678cda0d2ffa212b881b9c0da0

  • SHA1

    8c5064521de78810378ebfbe767bbe4988451014

  • SHA256

    3a7ed12eea1046eef1d722ed6873fe6f614bdc23d884bc021d78d41e37c0f14e

  • SHA512

    a04fd1e6b6749a2b2cdf185a77a9a5819a18b13eaeda6fdf3d9d54d02eb15b024750e360e0ecddcd24f59107c4add00f4e3caee9dfe302eab410a7536ace5311

  • SSDEEP

    12288:ZSNC80I+cR3R03VseZOt/wq9rhYQmJjc9hoe:Z4ChZcRi3VseFqpGi2e

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • AutoIT Executable 3 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops autorun.inf file 1 TTPs 3 IoCs

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

  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • 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 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3a7ed12eea1046eef1d722ed6873fe6f614bdc23d884bc021d78d41e37c0f14e.exe
    "C:\Users\Admin\AppData\Local\Temp\3a7ed12eea1046eef1d722ed6873fe6f614bdc23d884bc021d78d41e37c0f14e.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Disables RegEdit via registry modification
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies Internet Explorer start page
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2016
    • C:\Documents and Settings\tazebama.dl_
      "C:\Documents and Settings\tazebama.dl_"
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops autorun.inf file
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      PID:2428
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2428 -s 728
        3⤵
        • Program crash
        PID:1700
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /C AT /delete /yes
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3768
      • C:\Windows\SysWOW64\at.exe
        AT /delete /yes
        3⤵
          PID:3508
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\chrome.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:888
        • C:\Windows\SysWOW64\at.exe
          AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\chrome.exe
          3⤵
            PID:1736
        • 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:3872
          • C:\Windows\SysWOW64\cacls.exe
            cacls "C:\system volume information" /e /g "Admin":f
            3⤵
              PID:1100
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2428 -ip 2428
          1⤵
            PID:3704

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Documents and Settings\tazebama.dl_

            Filesize

            151KB

            MD5

            a867a96fc073afd30656f6c0939e50ed

            SHA1

            ed51477960030dd12f330771d48a1d09812bdef4

            SHA256

            667e78bcc0eff0590950a2dfa4f579c92b4b4ad56ebbed14dd4d11e0baf0ec94

            SHA512

            687041e5b1ad74897f16b23b35b5358079d213627849cbd1d15d7f356250cb67c50fab6d30c07fab33cb0b7f28c2e56a941e280f961cabae6e84ce83e3a479c1

          • C:\Users\tazebama.dl_

            Filesize

            151KB

            MD5

            a867a96fc073afd30656f6c0939e50ed

            SHA1

            ed51477960030dd12f330771d48a1d09812bdef4

            SHA256

            667e78bcc0eff0590950a2dfa4f579c92b4b4ad56ebbed14dd4d11e0baf0ec94

            SHA512

            687041e5b1ad74897f16b23b35b5358079d213627849cbd1d15d7f356250cb67c50fab6d30c07fab33cb0b7f28c2e56a941e280f961cabae6e84ce83e3a479c1

          • C:\Users\tazebama.dll

            Filesize

            32KB

            MD5

            b6a03576e595afacb37ada2f1d5a0529

            SHA1

            d598d4d0e70dec2ffa2849edaeb4db94fedcc0b8

            SHA256

            1707eaf60aa91f3791aa5643bfa038e9d8141878d61f5d701ebac51f4ae7aaad

            SHA512

            181b7cc6479352fe2c53c3630d45a839cdeb74708be6709c2a75847a54de3ffc1fdac8450270dde7174ecb23e5cb002f8ce39032429a3112b1202f3381b8918c

          • memory/2016-134-0x0000000000400000-0x00000000004CA000-memory.dmp

            Filesize

            808KB

          • memory/2016-147-0x0000000000400000-0x00000000004CA000-memory.dmp

            Filesize

            808KB

          • memory/2016-146-0x0000000000400000-0x00000000004CA000-memory.dmp

            Filesize

            808KB

          • memory/2016-139-0x0000000000400000-0x00000000004CA000-memory.dmp

            Filesize

            808KB

          • memory/2016-132-0x0000000000400000-0x00000000004CA000-memory.dmp

            Filesize

            808KB

          • memory/2428-140-0x0000000000400000-0x0000000000416000-memory.dmp

            Filesize

            88KB