Windows 7 deprecation

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Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    13/12/2024, 02:15

General

  • Target

    2a6978db146ea87b8da5cb48b821c8219ac05d6d3f33cbff8571f5ff4141d198.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\2a6978db146ea87b8da5cb48b821c8219ac05d6d3f33cbff8571f5ff4141d198.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1916
  • 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:1264
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 858E278B05B2C424315FDB43DF99C156
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2436
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-182c8942-292f-471c-b9e1-edcdb85d0f63\." /SETINTEGRITYLEVEL (CI)(OI)HIGH
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2044
      • 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:1816
      • 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:2644
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c rd /s /q "C:\Users\Admin\AppData\Local\Temp\MW-182c8942-292f-471c-b9e1-edcdb85d0f63\files"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2392
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-182c8942-292f-471c-b9e1-edcdb85d0f63\." /SETINTEGRITYLEVEL (CI)(OI)LOW
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:1076
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1052
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000005A8" "00000000000005DC"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2844

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MW-182c8942-292f-471c-b9e1-edcdb85d0f63\files.cab

    Filesize

    1.5MB

    MD5

    6ea1c4d2c75ee362820e814110f3dc90

    SHA1

    6f73fda661df49c64f6d8d2b66bef5a2f1939775

    SHA256

    8d1a7eafd0eb76d2aa0b522c6a98240489692fd1ca82565ad85d65be64b05d94

    SHA512

    5335ac317d7aeb93f509f073442e65a5be2bf0aed5fd88839d69a6b72360560ed227975fac062ab8d2476074417288dfd53eddfb3b12667ae0a8677e73f7a495

  • C:\Users\Admin\AppData\Local\Temp\MW-182c8942-292f-471c-b9e1-edcdb85d0f63\msiwrapper.ini

    Filesize

    380B

    MD5

    b5b927794f28e1332c390da32483545d

    SHA1

    9d51ac574c00ded72764260b114ac0449818ae39

    SHA256

    d06fb9266e71db1b4fe0eac10d5a036e32a052b127ba9e50dcccde4a00edc19c

    SHA512

    b91840bb2409c4c1aec98f4cc3bb2ba93ffce451affa6d3ac806058359d988743b8613647fb573775e97823db9e086c3f2bba42c2f71b7d4f6d9d2da3dbec6be

  • C:\Users\Admin\AppData\Local\Temp\MW-182c8942-292f-471c-b9e1-edcdb85d0f63\msiwrapper.ini

    Filesize

    1KB

    MD5

    ff6d4e5cce4ebd61c584cf4296f2dbfd

    SHA1

    f38216e03b9078f5d678df2b5954999e6ff4d184

    SHA256

    ef06f5f476459829917b01821a4a2ff1414d44dcf19791ea5e57816969c877c3

    SHA512

    b068947b2746d497db0838f407ff80dca2eb86e41a79d8d31942d964c469e9a14980d4f7ca36df4c4ff85ccb87733fc9681750dfce6be62528e2ae45e22b5e30

  • C:\Windows\Installer\MSI9D49.tmp

    Filesize

    208KB

    MD5

    0c8921bbcc37c6efd34faf44cf3b0cb5

    SHA1

    dcfa71246157edcd09eecaf9d4c5e360b24b3e49

    SHA256

    fd622cf73ea951a6de631063aba856487d77745dd1500adca61902b8dde56fe1

    SHA512

    ed55443e20d40cca90596f0a0542fa5ab83fe0270399adfaafd172987fb813dfd44ec0da0a58c096af3641003f830341fe259ad5bce9823f238ae63b7e11e108