Analysis

  • max time kernel
    117s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-02-2024 13:05

General

  • Target

    install.msi

  • Size

    3.3MB

  • MD5

    4e5903c4ff6d79dbad178815b377554d

  • SHA1

    74f50126aebbd186d6defa3641113cdc88a37fa2

  • SHA256

    d67bc5bfd6512b944e1c5e3e7d6871771c84d9eb94c863d123c5e92c6a86dc46

  • SHA512

    9a513449963c860e9be50c05a79beeea554fc6bc9748b260340711d8cb705cb022f53f10cfdc35ce1ad8d97644df57a9aae959b6dbb96c15b85d8ecaf62031a8

  • SSDEEP

    98304:5pKIwis1N1AaewONvZOIUFz+PlROVt1OTLmUsg:6IHmnqvZlUFz8RtyPg

Score
7/10

Malware Config

Signatures

  • Modifies file permissions 1 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops file in Windows directory 11 IoCs
  • Loads dropped DLL 1 IoCs
  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 53 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\install.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1116
  • 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:2896
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding AD8E20DBBB29DCA843CEC0B6DCDB2449
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2788
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-876408fe-f4bc-4e0e-b380-4b0c0df8c915\." /SETINTEGRITYLEVEL (CI)(OI)HIGH
        3⤵
        • Modifies file permissions
        PID:2520
      • C:\Windows\SysWOW64\EXPAND.EXE
        "C:\Windows\system32\EXPAND.EXE" -R files.cab -F:* files
        3⤵
        • Drops file in Windows directory
        PID:1020
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c start msedge https://www.concurtraining.com/customers/tech_pubs/Docs/_Current/UG_Inv/Inv_UG_Invoice_Pay.pdf
        3⤵
          PID:1636
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c rd /s /q "C:\Users\Admin\AppData\Local\Temp\MW-876408fe-f4bc-4e0e-b380-4b0c0df8c915\files"
          3⤵
            PID:1596
          • C:\Windows\SysWOW64\ICACLS.EXE
            "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-876408fe-f4bc-4e0e-b380-4b0c0df8c915\." /SETINTEGRITYLEVEL (CI)(OI)LOW
            3⤵
            • Modifies file permissions
            PID:2112
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2664
      • C:\Windows\system32\DrvInst.exe
        DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000005B8" "0000000000000060"
        1⤵
        • Drops file in Windows directory
        • Modifies data under HKEY_USERS
        • Suspicious use of AdjustPrivilegeToken
        PID:2512

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\MW-876408fe-f4bc-4e0e-b380-4b0c0df8c915\files.cab

        Filesize

        3.1MB

        MD5

        c5251b4a0300ac59b9c51b39b48960ef

        SHA1

        1a9f4710e07aff28c8961b8bb4d5a525ea385e42

        SHA256

        4d5fd376d65beb611b661283d72a19f92e69812c716546e3b3809062671238f2

        SHA512

        a00ddbbd2e4d29b6e54ad422d3a69c4cf3b68cec704c677b5713afe8080774a7b35367464fe5bde19efdd07795f1f7ce2ef13f236241b048638f56fa158b2e76

      • C:\Users\Admin\AppData\Local\Temp\MW-876408fe-f4bc-4e0e-b380-4b0c0df8c915\files\install.exe

        Filesize

        17.9MB

        MD5

        35c574ee1611ad96c67537e0144c46b5

        SHA1

        71de2d1469ebd24b8d2121a9a37c0b88e89b4f90

        SHA256

        fe36eda60222552f07f5aa703b2a43ab24051982cb49965b989d2672e15a2044

        SHA512

        058dfe922345c25022aec51cc83f67f59b88d4ff5d723d648bf3a400e36319e0f299fca4ba2697aafd16df78a3fcf0b1b370ec0379aa9ef2f67cf1d4d524fbc5

      • C:\Users\Admin\AppData\Local\Temp\MW-876408fe-f4bc-4e0e-b380-4b0c0df8c915\msiwrapper.ini

        Filesize

        1KB

        MD5

        0ac9e4ea55977201295392f1571aa101

        SHA1

        d351765ca7d9cb00caa1e579d3eb6300a5027b74

        SHA256

        3be6039252005183e1bcf0749319c02e42b0fca3512e2f96d71792f781fbf094

        SHA512

        3d703f84d50b47e9127c4c66a535c2ea58ae1a1ae6f36a38506b56c0a683d3bc96b44c88b459ff37fc1172b5e58c393b28fc2655369633698c998022c9bb19b3

      • C:\Users\Admin\AppData\Local\Temp\MW-876408fe-f4bc-4e0e-b380-4b0c0df8c915\msiwrapper.ini

        Filesize

        1KB

        MD5

        cd2710ad84af0a7df3cc931c81fff3ce

        SHA1

        14ec61a45f4f00dd8daa973cf3252c2feef43afa

        SHA256

        4750741cb4777c0f02a34c84e6344b7e33a122241fb5a885fcd8a6fd76936102

        SHA512

        dafd11a1e8cb8e52104079f749afa2638390d01edff6294635e4dcba14edd46b8aede98348c48c380fba7bf468de28ddb0a85355d776ba78a1e54be485fc4b91

      • C:\Windows\Installer\MSI8E7A.tmp

        Filesize

        208KB

        MD5

        4caaa03e0b59ca60a3d34674b732b702

        SHA1

        ee80c8f4684055ac8960b9720fb108be07e1d10c

        SHA256

        d01af2b8c692dffb04a5a04e3ccd0d0a3b2c67c8fc45a4b68c0a065b4e64cc3d

        SHA512

        25888848871286bdd1f9c43a0fba35640edb5bafbe0c6aa2f9708a070ea4e5b16745b7c4f744ae4f5643f75ef47f196d430bf70921ed27715f712825ec590a34

      • memory/1636-75-0x0000000002100000-0x0000000002101000-memory.dmp

        Filesize

        4KB