Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    05-08-2024 03:41

General

  • Target

    41ef278a866d57e3c81882e4ad7f6d04ae6b066cfd5632120d9ac4332d66753e.msi

  • Size

    96KB

  • MD5

    42ad49ed99c0d41a820316309bc2c3b3

  • SHA1

    f447a72b3cbea72e1b56fda8f44fd9f304b4474a

  • SHA256

    41ef278a866d57e3c81882e4ad7f6d04ae6b066cfd5632120d9ac4332d66753e

  • SHA512

    4e0af295dc656ad70361363c77646fb899a1ff4a816790959e090125bdba2089eb058dfa2b18bdcede34b45d9420b6f57c0db6aefa32f9799eccec3f163bdf75

  • SSDEEP

    1536:kiqCWq/Gf2CJ7ZrhzZr98n+lW0D80D+7fxun:xqCWqu+q8nLLxun

Malware Config

Signatures

  • 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
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Modifies data under HKEY_USERS 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 5 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\41ef278a866d57e3c81882e4ad7f6d04ae6b066cfd5632120d9ac4332d66753e.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:3016
  • 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:2408
    • C:\Windows\system32\MsiExec.exe
      C:\Windows\system32\MsiExec.exe -Embedding 56B629DEB185B2D746DBA51851C2864D
      2⤵
      • Loads dropped DLL
      PID:2448
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1368
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "0000000000000324" "00000000000003C0"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Config.Msi\f771518.rbs

    Filesize

    7KB

    MD5

    3559fb64cc308644926fe54559242e34

    SHA1

    dbf0fe1b28516a31d172723ec3a87c78f56237fc

    SHA256

    1f0a0f83038ca65c731e75fdece4b08a99cd92bfe6bb6e227e36355a949b1bd8

    SHA512

    541c0c0fd7d4d94f65443a9e72c3d22986bbb8b5355ba3a984d701ad0298ec3ddd6493eabd85899160fae9fe76bb82f6fe9b2162b44189cc5a1d88515b35f488

  • C:\Windows\Installer\MSI16BC.tmp

    Filesize

    56KB

    MD5

    91de8a79098ac3d20726e1acb50cd05d

    SHA1

    9cb04003c75f0cb63fe0c6dcd22a0c64d63154be

    SHA256

    54f8d71fb3117854743d594aa28427b943e5b2fb46f6003dbf4a9b562ebbfcea

    SHA512

    70cf1fe2c4d9b68c12b30df9013c4a1fd5b5a9fef1de704a42535259d1196b35eca6191270b19dedc4d3699b8211868b6b31a5ae3cccdc24711fb335fc32edc3

  • C:\Windows\Installer\f771516.msi

    Filesize

    96KB

    MD5

    42ad49ed99c0d41a820316309bc2c3b3

    SHA1

    f447a72b3cbea72e1b56fda8f44fd9f304b4474a

    SHA256

    41ef278a866d57e3c81882e4ad7f6d04ae6b066cfd5632120d9ac4332d66753e

    SHA512

    4e0af295dc656ad70361363c77646fb899a1ff4a816790959e090125bdba2089eb058dfa2b18bdcede34b45d9420b6f57c0db6aefa32f9799eccec3f163bdf75