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Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    12/12/2024, 11:29

General

  • Target

    57ff67.msi

  • Size

    1.9MB

  • MD5

    74a757de4790c76a4d83d640901e5249

  • SHA1

    d27c7ace0079aaf1fd39abbc0e161aa84aa399a9

  • SHA256

    6d2705d1bd666792331b29b0ae1895a1ef2072d0dc1e55ef105212da9024fc47

  • SHA512

    db06f8f0082fb45c97e35b3d959e513dc9defc8ed2ef15f4a937dee92c2a762ef0802dfcadb6a8741964e517eb0190bf40adca08c64bc0f9a976cbca57a2ede4

  • SSDEEP

    24576:Qt9cpVDh7lt0nSRDxmR+UJ2jUvshD3rcxCEiPzRqe:PpRh7FDxzUSDFr7EKz9

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\57ff67.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2328
  • 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:1748
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 15D056002E22474D7D033CB663DBDF59
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:876
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-728a4ade-f9bc-484a-8b0f-664a96c1e652\." /SETINTEGRITYLEVEL (CI)(OI)HIGH
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:1988
      • 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:860
      • 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:2500
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c rd /s /q "C:\Users\Admin\AppData\Local\Temp\MW-728a4ade-f9bc-484a-8b0f-664a96c1e652\files"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2536
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-728a4ade-f9bc-484a-8b0f-664a96c1e652\." /SETINTEGRITYLEVEL (CI)(OI)LOW
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:408
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2956
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "0000000000000498" "0000000000000598"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2952

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MW-728a4ade-f9bc-484a-8b0f-664a96c1e652\files.cab

    Filesize

    1.6MB

    MD5

    d0ecbe8399a46101b4e9d90b891deeb8

    SHA1

    1bcd3c5af8ab80e427402c92665e39a993a85b9a

    SHA256

    639f888682c0526229cabecac2da894fddf3a90e899f20d48aad28563b2cd3fb

    SHA512

    6986e33f3b3be73803a32d481f0987c3906bfadfe38a6fddf2b0df626f74bf9618e964aec9d091ad38f4253b0c5d2a242c8f4840c81e27464f537fc13730619f

  • C:\Users\Admin\AppData\Local\Temp\MW-728a4ade-f9bc-484a-8b0f-664a96c1e652\msiwrapper.ini

    Filesize

    1KB

    MD5

    f5bedf3eefa890c5738fdb5a4af2454c

    SHA1

    3db6cdcffa79c4b978ab64f4b4a1a3749f0097cd

    SHA256

    69680697798506a84bb9261a58b023e409f7fa02b758fd51e98a9e5a2a6db298

    SHA512

    bdae79dd62a2d442baf6b714819b950f3e0f7a5c588bfc17b1352e1058db5d94e79660e1968640bfcd78b282ac1868e245964a1ceabc25781fcf800a2e0f53ab

  • C:\Windows\Installer\MSI1610.tmp

    Filesize

    208KB

    MD5

    0c8921bbcc37c6efd34faf44cf3b0cb5

    SHA1

    dcfa71246157edcd09eecaf9d4c5e360b24b3e49

    SHA256

    fd622cf73ea951a6de631063aba856487d77745dd1500adca61902b8dde56fe1

    SHA512

    ed55443e20d40cca90596f0a0542fa5ab83fe0270399adfaafd172987fb813dfd44ec0da0a58c096af3641003f830341fe259ad5bce9823f238ae63b7e11e108