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Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29/09/2024, 20:47

General

  • Target

    pcnema-windows.msi

  • Size

    10.9MB

  • MD5

    02eb598ff04d0d7dfb79ba1af4c52d18

  • SHA1

    2d180eb225c646acb8e5a589611467dc16482d34

  • SHA256

    fe5c32ec712537d9b457c8354522b0a32cf7c231968850ce49ead114f2092541

  • SHA512

    14a66ec65f3e2fe9b2619cfb09008e3c8aa30b2905a723a0aa57422ed3bc172b28f4d5b39f431bf2b730938e0bec4801b7cceabcec84169893b0536893e7f393

  • SSDEEP

    196608:1Gc7HYf/k1hVN4TuO+p+VJ0FABpgFmstkrmyLtYGcEiNClnB:Ic7Yk1MuDpEccpdstkrPLtYGcLqB

Malware Config

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Powershell Invoke Web Request.

  • 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 Program Files directory 5 IoCs
  • Drops file in Windows directory 12 IoCs
  • Loads dropped DLL 7 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 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 46 IoCs
  • Modifies registry class 35 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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\pcnema-windows.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2572
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Loads dropped DLL
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3000
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 3129A49F0E1C5351D0F400E94DD0342E C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2112
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -NoProfile -windowstyle hidden try { [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 } catch {}; Invoke-WebRequest -Uri "https://go.microsoft.com/fwlink/p/?LinkId=2124703" -OutFile "$env:TEMP\MicrosoftEdgeWebview2Setup.exe" ; Start-Process -FilePath "$env:TEMP\MicrosoftEdgeWebview2Setup.exe" -ArgumentList ('/silent', '/install') -Wait
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      PID:1968
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:2100
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000005D8" "000000000000038C"
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      PID:2528

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Pcnema\Pcnema.lnk

      Filesize

      1KB

      MD5

      1746bb5ffe4014c78a6bcfe47c0a39c2

      SHA1

      e811e0270f308e9979e9d65887b0b4b60e975572

      SHA256

      401ca3ffd4acf30f014337b50c4859a476c804413cb1c38eb3c333516a784c9c

      SHA512

      0f410278b43e422296ac7203baf73d3020f4304143cf97343e86a2467f5ddeff84059f054ba0e277a2478aef23e730e5c56ad9313439b2c31471d7b9fa2ed52a

    • C:\Users\Admin\AppData\Local\Temp\MSIE292.tmp

      Filesize

      132KB

      MD5

      cfbb8568bd3711a97e6124c56fcfa8d9

      SHA1

      d7a098ae58bdd5e93a3c1b04b3d69a14234d5e57

      SHA256

      7f47d98ab25cfea9b3a2e898c3376cc9ba1cd893b4948b0c27caa530fd0e34cc

      SHA512

      860cbf3286ac4915580cefaf56a9c3d48938eb08e3f31b7f024c4339c037d7c8bdf16e766d08106505ba535be4922a87dc46bd029aae99a64ea2fc02cf3aec04

    • C:\Windows\Installer\f7702bf.msi

      Filesize

      10.9MB

      MD5

      02eb598ff04d0d7dfb79ba1af4c52d18

      SHA1

      2d180eb225c646acb8e5a589611467dc16482d34

      SHA256

      fe5c32ec712537d9b457c8354522b0a32cf7c231968850ce49ead114f2092541

      SHA512

      14a66ec65f3e2fe9b2619cfb09008e3c8aa30b2905a723a0aa57422ed3bc172b28f4d5b39f431bf2b730938e0bec4801b7cceabcec84169893b0536893e7f393

    • \Program Files\Pcnema\pcnema.exe

      Filesize

      13.2MB

      MD5

      64c0c966aecd048d861ea97ab35efec0

      SHA1

      a4fa9e7c766655f623d44f6e82f942c59d8c2815

      SHA256

      f6cdb5542153ec3709d82e6d3faf8de98365069291f45c4501f81954a1992167

      SHA512

      def270f4f1f0502927fc430f212a094c441924d5081f867638eb3933b0a7cba3a6a5b530b2c44eba6f974472b490b16b81e5eb60b826f4d81eeef2d0f6797cfd

    • memory/1968-42-0x0000000001DE0000-0x0000000001DE8000-memory.dmp

      Filesize

      32KB

    • memory/1968-41-0x000000001B820000-0x000000001BB02000-memory.dmp

      Filesize

      2.9MB