Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    29/05/2026, 18:15

General

  • Target
    DocuSign.msi
  • Size 8.2MB
  • Sample260529-wvx3qset9n
  • SHA256 cdf8e1012400896e603aceb7d9bce167b2eeb54f6b0f194f4603efbe2db001f0
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 13 IoCs

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Powershell Invoke Web Request.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 24 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops file in System32 directory 8 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 31 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Time Discovery 1 TTPs 4 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

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

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 22 IoCs
  • Suspicious behavior: EnumeratesProcesses 35 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 13 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⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4564
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • 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:4296
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:5488
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding 864888BB249E95FA4992090BB826B3C5
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3608
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI5B69.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240671703 2 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.GenerateAgentId
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:1308
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI5CA3.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240671921 6 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.ShouldContinueInstallation
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1836
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI6D2E.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240676156 10 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.ReportMsiInstallStart
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:4020
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSI71E3.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240677359 15 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.DetectDotNetFrameworkRuntime
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Time Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:4168
      • C:\Windows\system32\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIA953.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240691546 31 Atera.Agent.Installer.Msi.Ca!Atera.Agent.Installer.Msi.Ca.CustomActions.ReportMsiInstallEnd
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • Drops file in Windows directory
        PID:2012
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding 4F12C0F57B527F26587CCD8A16BEB1D1 E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4360
      • C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe
        "C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe" init-settings --agent-id "4b73f7cd-7ae4-4aa8-8a4d-d89c3eb170d7" --account-id "1YQa15qEdxo/AZJk300eVU1MMDBQMDO2SuShs2nCsGA=" --environment "Production" --customer-id "1" --folder-id ""
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3184
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" -ExecutionPolicy Bypass -NoProfile -Command "[Net.ServicePointManager]::SecurityProtocol=[Net.SecurityProtocolType]::Tls12;Invoke-WebRequest -Uri 'https://dot.net/v1/dotnet-install.ps1' -OutFile \"C:\Program Files\ATERA Networks\AteraAgent\Agent\dotnet-install.ps1\""
        3⤵
        • Badlisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5152
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" -ExecutionPolicy unrestricted -NoProfile -File "C:\Program Files\ATERA Networks\AteraAgent\Agent\dotnet-install.ps1" -Channel 8.0 -Runtime dotnet -InstallDir "C:\Program Files\ATERA Networks\AteraAgent\Agent\\.dotnet"
        3⤵
        • Badlisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Drops file in Program Files directory
        • System Time Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5692
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:4056
  • C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe
    "C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe"
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3944
    • C:\Windows\system32\cmd.exe
      "cmd.exe" /c "C:\Program Files\ATERA Networks\AteraAgent\Agent\.dotnet\dotnet.exe" --list-runtimes
      2⤵
      • System Time Discovery
      • Suspicious use of WriteProcessMemory
      PID:2540
      • C:\Program Files\ATERA Networks\AteraAgent\Agent\.dotnet\dotnet.exe
        "C:\Program Files\ATERA Networks\AteraAgent\Agent\.dotnet\dotnet.exe" --list-runtimes
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Time Discovery
        PID:4608

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e585aaf.rbs

        • Path C:\Config.Msi\e585aaf.rbs
        • Size 7KB
        • SHA256 9e7064b7b30a06718d40fd791bd47d27f78510b9ae204b78418972520b7e2eae
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dotnet.exe

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\.dotnet\dotnet.exe
        • Size 153KB
        • SHA256 07f5d2cce93e97878a765fd81d1981acc3b21be0fdfb519cf0544ca2ae2d0ab5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hostfxr.dll

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\.dotnet\host\fxr\8.0.27\hostfxr.dll
        • Size 357KB
        • SHA256 0a495d3a7befebf627a973760439da0f7f1f1667b99832f083664fac7641d2dc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        .settings.json

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\.settings.json
        • Size 179B
        • SHA256 73af3df7b3389d7a3888ec3feda86f2d5ea52a8cf3b8281ad007a675e0f07471
        • MD5 SHA1 SHA512 TLSH

        AteraAgent.exe

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\AteraAgent.exe
        • Size 21.1MB
        • SHA256 93d6fe2287fb4a0d5466a5b466bd1838d5ba53f6e90fae960a1c709dde52062b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        agent.cert.pfx

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\certificates\production\agent.cert.pfx
        • Size 2KB
        • SHA256 13eedf9ee121c26790c87b2bc6e05d053ed8cdf87fbb37c41caf6b6f19665daf
        • MD5 SHA1 SHA512 TLSH

        dotnet-install.ps1

        • Path C:\Program Files\ATERA Networks\AteraAgent\Agent\dotnet-install.ps1
        • Size 74KB
        • SHA256 6585899aed55ff6ae13dbe1e8c3b878f2d00433520e7efbe250b75db948b7da9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB
        • Size 471B
        • SHA256 ad5b506e0a5c2db99afa567bbda74d3ca0fdec30b0185bcc2b9abf2f62e9ad7b
        • MD5 SHA1 SHA512 TLSH

        8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E
        • Size 727B
        • SHA256 ae70e5ca10f73c994474e487f7f2186da679f9bc4bf65fc225c9e0266cf15eda
        • MD5 SHA1 SHA512 TLSH

        C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
        • Size 727B
        • SHA256 8360cc6f51681fb6e2af86774f6ac60fe7cf57a08070f59aafe50a9bf3172a56
        • MD5 SHA1 SHA512 TLSH

        698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\698460A0B6E60F2F602361424D832905_8BB23D43DE574E82F2BEE0DF0EC47EEB
        • Size 400B
        • SHA256 8472a9e2bbb110cdc9d19a24d3a13705ba6b26fb4975856ba874ac3ae4c1ae7d
        • MD5 SHA1 SHA512 TLSH

        8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_6FBFBE34ABAF2109B411B965FB39009E
        • Size 408B
        • SHA256 52ef7878886e29b0c3978b251c51cad334a4243b4795ad6ee829ad9e35ff354a
        • MD5 SHA1 SHA512 TLSH

        C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
        • Size 412B
        • SHA256 d7fa97014d88f974a0e64330e2184584b7876b3b0a7dce2a9acd225604402e10
        • MD5 SHA1 SHA512 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

        rundll32.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\rundll32.exe.log
        • Size 847B
        • SHA256 f0ab05c32d6af3c2b559dbce4dec025ce3e730655a2430ade520e89a557cace8
        • MD5 SHA1 SHA512 TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 ab0e475782e364be238bbe72860e880d77a0945676b5366edaf07dca5c868449
        • MD5 SHA1 SHA512 TLSH

        __PSScriptPolicyTest_uiuem5ld.5ny.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uiuem5ld.5ny.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        MSI5B69.tmp

        • Path C:\Windows\Installer\MSI5B69.tmp
        • Size 340KB
        • SHA256 1997e4959d6c187e9ae35097b4cc0702e8a1564acb1dec7b080adcaa9b973fd0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSI72EE.tmp

        • Path C:\Windows\Installer\MSI72EE.tmp
        • Size 390KB
        • SHA256 7aacd4c18710e9bc4ff2034895a0a0c8f80f21809fb177d520e93f7688216e6d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Atera.Agent.Installer.Msi.Ca.dll

        • Path C:\Windows\Installer\SFXCA574FF7353248F53BFC41B70248B5D753\Atera.Agent.Installer.Msi.Ca.dll
        • Size 59KB
        • SHA256 46a2844072f1be835debc683da08d7a37d866c6a4a2b1bff79f9e4bae60d9403
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CustomAction.config

        • Path C:\Windows\Installer\SFXCA751849EAD845521A4236887D069A39E0\CustomAction.config
        • Size 956B
        • SHA256 2dbc73a3bc444a9119c9b5e20276698384d9ad9535a8a7547c44d1b9a8d67346
        • MD5 SHA1 SHA512 TLSH

        WixToolset.Dtf.WindowsInstaller.dll

        • Path C:\Windows\Installer\SFXCA751849EAD845521A4236887D069A39E0\WixToolset.Dtf.WindowsInstaller.dll
        • Size 193KB
        • SHA256 a614884ea627da1925131ebf41e8ae202caeac0fe543b86384f5eb2bfaf1aa75
        • MD5 SHA1 SHA512 SSDEEP TLSH

        e585aae.msi

        • Path C:\Windows\Installer\e585aae.msi
        • Size 8.2MB
        • SHA256 cdf8e1012400896e603aceb7d9bce167b2eeb54f6b0f194f4603efbe2db001f0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TmpB2A1.tmp

        • Path C:\Windows\Temp\TmpB2A1.tmp
        • Size 3KB
        • SHA256 94739ca46676bd602a78671257fbfce39feaabc9664c6326bf4970a0108e3429
        • MD5 SHA1 SHA512 TLSH

        metadata-2

        • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
        • Size 24.1MB
        • SHA256 6f0b8bc47cf8fc9095957dda9c8346a04c2ec56005cfe12241ee4cde70b61488
        • MD5 SHA1 SHA512 SSDEEP TLSH

        {8826caae-1dea-4c0f-ba7e-77166bfe71e9}_OnDiskSnapshotProp

        • Path \??\Volume{12d9ef41-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{8826caae-1dea-4c0f-ba7e-77166bfe71e9}_OnDiskSnapshotProp
        • Size 6KB
        • SHA256 da776120be9b94d2d9e152440a3acff7d8f9873d19b20c7f2a9682b058c8f6d8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1308-33-0x0000024845C40000-0x0000024845C74000-memory.dmp

        memory/1308-37-0x0000024845AB0000-0x0000024845AC4000-memory.dmp

        memory/1836-59-0x0000027AD28A0000-0x0000027AD28DC000-memory.dmp

        memory/1836-58-0x0000027AD2840000-0x0000027AD2852000-memory.dmp

        memory/5152-123-0x000002A4AD270000-0x000002A4AD292000-memory.dmp

        memory/5692-164-0x000001716C690000-0x000001716C6A2000-memory.dmp

        memory/5692-163-0x000001716C450000-0x000001716C45A000-memory.dmp

        memory/5692-161-0x000001716C6A0000-0x000001716C6C4000-memory.dmp

        memory/5692-160-0x000001716C6A0000-0x000001716C6CA000-memory.dmp

        memory/5692-159-0x000001716C420000-0x000001716C42A000-memory.dmp

        memory/5692-158-0x000001716C460000-0x000001716C515000-memory.dmp

        memory/5692-157-0x000001716C440000-0x000001716C45C000-memory.dmp