Windows 7 deprecation

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Analysis

  • max time kernel
    119s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    12/12/2024, 11:09

General

  • Target

    setup.msi

  • Size

    1.8MB

  • MD5

    a08ac9d031b2c05b4ad646e76867f2c2

  • SHA1

    49e8cd403932e528db6ab8fea229dac7dc2064af

  • SHA256

    2a6978db146ea87b8da5cb48b821c8219ac05d6d3f33cbff8571f5ff4141d198

  • SHA512

    3acdb495d5ecf2579d54e7fe30d4e3686f3aab65b6fbf3b39c9e73bead09bd9de422dc91baba45f235baef6c326b5d1c8a58d1e68b2c9ba62a1497f3378ee922

  • SSDEEP

    24576:Kt9cpVDhmldE4LOTVE+2gDcVYBII/g7M3z:9pRhmkthkQIbM

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
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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\setup.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2732
  • 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:2656
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 15D089D9ADA73274F58591CFB6E9DB03
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2908
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-f217f8d7-20d3-4480-902e-0f5dd86ef5ec\." /SETINTEGRITYLEVEL (CI)(OI)HIGH
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2792
      • C:\Windows\SysWOW64\EXPAND.EXE
        "C:\Windows\system32\EXPAND.EXE" -R files.cab -F:* files
        3⤵
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:264
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c start msedge https://www.docusign.com/sites/default/files/Signature_Appliance_Client_Guide_8.0.pdf
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2972
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c rd /s /q "C:\Users\Admin\AppData\Local\Temp\MW-f217f8d7-20d3-4480-902e-0f5dd86ef5ec\files"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:908
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-f217f8d7-20d3-4480-902e-0f5dd86ef5ec\." /SETINTEGRITYLEVEL (CI)(OI)LOW
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3044
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2776
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000002FC" "0000000000000568"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MW-f217f8d7-20d3-4480-902e-0f5dd86ef5ec\files.cab

    Filesize

    1.5MB

    MD5

    6ea1c4d2c75ee362820e814110f3dc90

    SHA1

    6f73fda661df49c64f6d8d2b66bef5a2f1939775

    SHA256

    8d1a7eafd0eb76d2aa0b522c6a98240489692fd1ca82565ad85d65be64b05d94

    SHA512

    5335ac317d7aeb93f509f073442e65a5be2bf0aed5fd88839d69a6b72360560ed227975fac062ab8d2476074417288dfd53eddfb3b12667ae0a8677e73f7a495

  • C:\Users\Admin\AppData\Local\Temp\MW-f217f8d7-20d3-4480-902e-0f5dd86ef5ec\msiwrapper.ini

    Filesize

    380B

    MD5

    46fddbca447b4380a0ed0c8e573cb942

    SHA1

    bc154bf219d53bafd7c9aed89a829d05c8fcefdb

    SHA256

    63364abf6beb77d8d07c514b8c3a96e83d50fe50fa592d4b79aa59c1a1875a2e

    SHA512

    4ac6e20a253d068d14ef0c035f84a2df423c7f6f40341c1e702d78c70127ef4a33f061c849a54d18f22706a30c7d77f76a06f3925ca306e637e5b5114d5b96bd

  • C:\Users\Admin\AppData\Local\Temp\MW-f217f8d7-20d3-4480-902e-0f5dd86ef5ec\msiwrapper.ini

    Filesize

    1KB

    MD5

    155c56eba027b8b52ff5a2c67e18f2ba

    SHA1

    a37c77df491a19bbfdf7d3a0a01bfd41512cd8ca

    SHA256

    8bc8c88dd9729a55335e4353548f431bff4b4fc2ee292c5474687a3a576867e9

    SHA512

    eb7e6f85b5e19fc84d6cb92e752a4ccb9dc6fda714f512923515e87b36a87f9551992af0e2878c34eceb39685d35dc788a500b7335be86e70a7137deeafdfd03

  • C:\Windows\Installer\MSI1120.tmp

    Filesize

    208KB

    MD5

    0c8921bbcc37c6efd34faf44cf3b0cb5

    SHA1

    dcfa71246157edcd09eecaf9d4c5e360b24b3e49

    SHA256

    fd622cf73ea951a6de631063aba856487d77745dd1500adca61902b8dde56fe1

    SHA512

    ed55443e20d40cca90596f0a0542fa5ab83fe0270399adfaafd172987fb813dfd44ec0da0a58c096af3641003f830341fe259ad5bce9823f238ae63b7e11e108