Analysis

  • max time kernel
    150s
  • max time network
    95s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    19/04/2026, 12:44

General

  • Target
    2026-04-19_31490957997af88b9650f876ccd4fb5a_cobalt-strike_hijackloader_icedid_njrat_satacom_stealc_vidar.exe
  • Size 7.8MB
  • Sample260419-pyyecaay3m
  • SHA256 44ec3ebdeb1377d61c443849df4f75cb4d092b431489fbf1db42b7216c7f2210
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Custom signature
    Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3128
    • C:\Users\Admin\AppData\Local\Temp\2026-04-19_31490957997af88b9650f876ccd4fb5a_cobalt-strike_hijackloader_icedid_njrat_satacom_stealc_vidar.exe
      "C:\Users\Admin\AppData\Local\Temp\2026-04-19_31490957997af88b9650f876ccd4fb5a_cobalt-strike_hijackloader_icedid_njrat_satacom_stealc_vidar.exe"
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3404
      • C:\Users\Admin\Videos\Symbiote.exe
        C:\Users\Admin\Videos\Symbiote.exe
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2808
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell.exe -c Add-MpPreference -ExclusionProcess "C:\Users\Admin\Videos\Symbiote.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:936
        • C:\Users\Admin\Videos\Symbiote.exe
          "C:\Users\Admin\Videos\Symbiote.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4984
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell.exe -c Add-MpPreference -ExclusionProcess "C:\Users\Admin\Videos\Symbiote.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Drops file in System32 directory
            • Modifies data under HKEY_USERS
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3808
  • C:\Users\Admin\Videos\Symbiote.exe
    C:\Users\Admin\Videos\Symbiote.exe
    1⤵
    • Executes dropped EXE
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4116
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -c Add-MpPreference -ExclusionProcess "C:\Users\Admin\Videos\Symbiote.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:484
    • C:\Users\Admin\Videos\Symbiote.exe
      "C:\Users\Admin\Videos\Symbiote.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2576
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell.exe -c Add-MpPreference -ExclusionProcess "C:\Users\Admin\Videos\Symbiote.exe"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3552

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
        • Size 4KB
        • SHA256 e27390d57580e3dfba07bec3d8e430203bbc91e90f6937079b3fd52abc721bd4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 b79f569e6c453b33139dcd90442a80e59ac882a1e272a8e4a322d295bfac3ab0
        • MD5 SHA1 SHA512 TLSH

        __PSScriptPolicyTest_x0ov1vvw.rky.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x0ov1vvw.rky.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH

        PEStub.dll

        • Path C:\Users\Admin\Videos\PEStub.dll
        • Size 59KB
        • SHA256 5aab76737f2d9f6e6d4d225b12e1123918306d86f1ba5e0f629f97fd3f9710d1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Phosphoric.dll

        • Path C:\Users\Admin\Videos\Phosphoric.dll
        • Size 868KB
        • SHA256 bbbf9287cbac6a35d66cd0ac5744298a62b1934cbc8cf2292e3f1efd43ab22fa
        • MD5 SHA1 SHA512 SSDEEP TLSH

        PsPInjector.dll

        • Path C:\Users\Admin\Videos\PsPInjector.dll
        • Size 21KB
        • SHA256 dd93e8ae016728ffcfd0dde17e67768357f909d9b09e73919838b394960f1a8f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Symbiote.exe

        • Path C:\Users\Admin\Videos\Symbiote.exe
        • Size 781KB
        • SHA256 dd822836313f979e21c86489d4b2a95a68c258baccb3abdce736d298a2c7ad14
        • MD5 SHA1 SHA512 SSDEEP TLSH

        StartupProfileData-NonInteractive

        • Path C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 1KB
        • SHA256 87b0c970e8d5fce5c168b70336a5d974a198c14dcc0c7fd1f49d6bcc503e63cf
        • MD5 SHA1 SHA512 TLSH

        memory/484-295-0x000001AFE1800000-0x000001AFE1FAE000-memory.dmp

        memory/484-296-0x000001AFC95E0000-0x000001AFC95F2000-memory.dmp

        memory/484-294-0x000001AFC78B0000-0x000001AFC78BC000-memory.dmp

        memory/936-43-0x00000238ED290000-0x00000238ED343000-memory.dmp

        memory/936-290-0x00000238EC830000-0x00000238EC842000-memory.dmp

        memory/936-64-0x00000238ED6E0000-0x00000238ED6FC000-memory.dmp

        memory/936-50-0x00000238ED560000-0x00000238ED56A000-memory.dmp

        memory/936-112-0x00000238ED820000-0x00000238ED83A000-memory.dmp

        memory/936-41-0x00000238ED270000-0x00000238ED28C000-memory.dmp

        memory/936-288-0x00000238EC860000-0x00000238ED00E000-memory.dmp

        memory/936-87-0x00000238ED6C0000-0x00000238ED6CA000-memory.dmp

        memory/936-287-0x00000238EC2A0000-0x00000238EC2AC000-memory.dmp

        memory/936-17-0x00000238ED1C0000-0x00000238ED1E2000-memory.dmp

        memory/3128-32-0x0000000003420000-0x0000000003421000-memory.dmp

        memory/3128-24-0x0000000003430000-0x0000000003431000-memory.dmp

        memory/3404-275-0x0000000140000000-0x0000000140398000-memory.dmp

        memory/3404-9-0x00007FF6D5EC0000-0x00007FF6D668D000-memory.dmp

        memory/3404-303-0x00007FF6D5EC0000-0x00007FF6D668D000-memory.dmp

        memory/3404-0-0x0000000180000000-0x00000001800DD000-memory.dmp

        memory/3404-304-0x0000027315710000-0x0000027315EBE000-memory.dmp

        memory/3552-302-0x000002EDFA040000-0x000002EDFA052000-memory.dmp

        memory/3552-300-0x000002EDF9F60000-0x000002EDF9F6C000-memory.dmp

        memory/3552-301-0x000002EDFBE70000-0x000002EDFC61E000-memory.dmp

        memory/3808-284-0x00000228ECE30000-0x00000228ED5DE000-memory.dmp

        memory/3808-289-0x00000228D4BB0000-0x00000228D4BC2000-memory.dmp

        memory/3808-283-0x00000228D4B00000-0x00000228D4B0C000-memory.dmp

        memory/3808-223-0x00000228EDCB0000-0x00000228EDCBA000-memory.dmp

        memory/3808-219-0x00000228EDCA0000-0x00000228EDCA6000-memory.dmp

        memory/3808-209-0x00000228EDC70000-0x00000228EDC78000-memory.dmp