Overview

overview

10

Static

static

3

2026-07-04...ar.exe

windows10-2004-x64

10

2026-07-04...ar.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    120s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/07/2026, 04:18

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General

  • Target
    2026-07-04_7e622957f43b3732e324f28f301fa441_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
  • Size 2.8MB
  • Sample260704-excfdafs2l
  • SHA256 0b87e876b33d0b273a853522f406ea492103e75fb1467176ba26e5d6654a5fdc
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
apt29adwareaptcollectiondefense_evasiondiscoverycosmicdukepersistenceransomwarespywarestealer

Malware Config

Signatures

  • Family: CosmicDuke,TinyBaron

    CosmicDuke aka TinyBaron is an information stealer used by the APT29 group.

    stealercosmicduke
  • Detects CosmicDuke or TinyBaron 3 IoCs
    stealeraptapt29
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

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

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

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
    collection
  • Checks installed software on the system 1 TTPs

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

    discovery
  • Enumerates connected drives 3 TTPs 44 IoCs

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

  • Drops file in System32 directory 16 IoCs
  • 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.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Modifies Control Panel 5 IoCs
    defense_evasion
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies data under HKEY_USERS 12 IoCs
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 2 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.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-07-04_7e622957f43b3732e324f28f301fa441_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-04_7e622957f43b3732e324f28f301fa441_cosmicduke_elex_redline-stealer_rhadamanthys_smoke-loader_stealc_tofsee_vidar.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • Enumerates connected drives
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_win_path
    PID:2036
    • C:\Windows\SysWOW64\hostfs.exe
      C:\Windows\SysWOW64\hostfs.exe /combine local system
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5452
  • C:\Windows\SysWOW64\hostfs.exe
    C:\Windows\SysWOW64\hostfs.exe
    1⤵
    • Executes dropped EXE
    PID:5852
  • C:\Windows\SysWOW64\uidhcp.exe
    "C:\Windows\SysWOW64\uidhcp.exe" pkt
    1⤵
    • Executes dropped EXE
    • Enumerates connected drives
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2480
  • C:\Windows\SysWOW64\uidhcp.exe
    C:\Windows\SysWOW64\uidhcp.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2944
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1892
    • C:\Windows\explorer.exe
      explorer.exe /LOADSAVEDWINDOWS
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:3644
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:2272
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:1316

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        prep_Activatable Class_Hermes_perf.cache
        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
        • Size 607B
        • SHA256 be6b74e52e5eef1f1c27c0976bf3bf1bfa99958c00bbef2898a602f691be6dae
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        dspfw.scr
        • Path C:\Users\Admin\AppData\Local\Temp\dspfw.scr
        • Size 3KB
        • SHA256 47f3405ab0da5af125bcc6ebb6d17a1573b090c54d7a0a00630ec170ccc4b9d1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ntuser{4CB43D7F-7DCA-4906-8698-FFFFFFFF8094E303}.pol
        • Path C:\Users\Public\Documents\ntuser{4CB43D7F-7DCA-4906-8698-FFFFFFFF8094E303}.pol
        • Size 4B
        • SHA256 443c07a2c83b7b0253a325d2b72ac757c3aa5b41cd749842bc74fb3ee9b26866
        • MD5 SHA1 SHA512
        Submit Download

        hostfs.exe
        • Path C:\Windows\SysWOW64\hostfs.exe
        • Size 1.3MB
        • SHA256 32ab6b09d51516c527a3d573d9f7f99839a96663114144f93d8168823e96e771
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        uidhcp.exe
        • Path C:\Windows\SysWOW64\uidhcp.exe
        • Size 2.8MB
        • SHA256 12e016c61dd7380a59a649a5434d7ec3d9c96a998ffe4185b239f8502c3b04f9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1316-147-0x00000273142A0000-0x00000273142C0000-memory.dmp
        Download

        memory/1316-137-0x0000027301A20000-0x0000027301A40000-memory.dmp
        Download

        memory/1316-141-0x0000027301E40000-0x0000027301E60000-memory.dmp
        Download

        memory/1316-138-0x0000027314000000-0x0000027314100000-memory.dmp
        Download

        memory/1316-131-0x00000273001E0000-0x00000273002E0000-memory.dmp
        Download

        memory/2036-0-0x0000000000400000-0x00000000005D5000-memory.dmp
        Download

        memory/2036-3-0x00000000023D0000-0x0000000002418000-memory.dmp
        Download

        memory/2036-4-0x0000000000400000-0x0000000000420000-memory.dmp
        Download

        memory/2036-1-0x0000000000400000-0x00000000005D5000-memory.dmp
        Download

        memory/2036-2-0x0000000000400000-0x00000000005D5000-memory.dmp
        Download

        memory/2480-33-0x0000000000400000-0x00000000005D5000-memory.dmp
        Download

        memory/2480-73-0x0000000000400000-0x00000000005D5000-memory.dmp
        Download

        memory/2944-79-0x0000000000400000-0x0000000000438000-memory.dmp
        Download

        memory/2944-77-0x0000000000400000-0x00000000005D5000-memory.dmp
        Download

        memory/2944-75-0x0000000000400000-0x00000000005D5000-memory.dmp
        Download

        memory/2944-74-0x0000000000400000-0x00000000005D5000-memory.dmp
        Download

        memory/2944-36-0x0000000000400000-0x00000000005D5000-memory.dmp
        Download