Analysis

  • max time kernel
    154s
  • max time network
    167s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    13-02-2022 10:45

General

  • Target

    67255c29a1b2fcc1f9067f08fcf575a2d654e4f8d235a5a583ff2605b7728455.msi

  • Size

    279KB

  • MD5

    6d1d353f28177bb6feb225553c552626

  • SHA1

    638b8fa9a96341126cd70bc3f8454e314c0e6aba

  • SHA256

    67255c29a1b2fcc1f9067f08fcf575a2d654e4f8d235a5a583ff2605b7728455

  • SHA512

    cc2d5e0b5369e4ef82df06572d990a0e5f20ae0aa6c3c51b8e4bdfddb7aae6f3312413fde3e8cad32445deeebe467d2f10ec5ed412f77b62828a07fa1d1a76b7

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 4 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 Windows directory 10 IoCs
  • Modifies Internet Explorer settings 1 TTPs 50 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 52 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\67255c29a1b2fcc1f9067f08fcf575a2d654e4f8d235a5a583ff2605b7728455.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1096
  • 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:568
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 891517A7869F271C43F4C9ADD9B1F85E
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:572
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C start /MAX https://adobe.ly/2RY5GJR
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1364
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe" https://adobe.ly/2RY5GJR
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1640
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1640 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1048
      • C:\Users\Admin\AppData\Local\Temp\lc1E81.tmp
        "C:\Users\Admin\AppData\Local\Temp\lc1E81.tmp"
        3⤵
        • Executes dropped EXE
        PID:636

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/572-56-0x0000000076491000-0x0000000076493000-memory.dmp

    Filesize

    8KB

  • memory/1096-54-0x000007FEFC451000-0x000007FEFC453000-memory.dmp

    Filesize

    8KB