Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/11/2026, 05:55

General

  • Target
    2026-11-10_aae8b3027db09bae9cf5930c929ab862_coinminer_cosmicduke_elex_redline-stealer_rhadamanthys_s.exe
  • Size 2.5MB
  • Sample261110-gmwglsty5j
  • SHA256 1ea90a4f71e18c5541256012a684970b9c96dda26bcd80481e5e46c1792d1582
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: CosmicDuke,TinyBaron

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

  • Detects CosmicDuke or TinyBaron 5 IoCs
  • Custom signature
    UPX dump on OEP (original entry point) 7 IoCs
  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 1 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 42 IoCs

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

  • Drops file in System32 directory 16 IoCs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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 Control Panel 5 IoCs
  • Modifies data under HKEY_USERS 12 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-11-10_aae8b3027db09bae9cf5930c929ab862_coinminer_cosmicduke_elex_redline-stealer_rhadamanthys_s.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-10_aae8b3027db09bae9cf5930c929ab862_coinminer_cosmicduke_elex_redline-stealer_rhadamanthys_s.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:2408
    • C:\Windows\SysWOW64\sysinf.exe
      C:\Windows\SysWOW64\sysinf.exe /combine local system
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4948
  • C:\Windows\SysWOW64\sysinf.exe
    C:\Windows\SysWOW64\sysinf.exe
    1⤵
    • Executes dropped EXE
    PID:476
  • C:\Windows\SysWOW64\hostsrv.exe
    "C:\Windows\SysWOW64\hostsrv.exe" fie
    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:1596
  • C:\Windows\SysWOW64\hostsrv.exe
    C:\Windows\SysWOW64\hostsrv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1836

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        cfgeng.scr

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

        ntpptp.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ntpptp.exe
        • Size 5KB
        • SHA256 5b50e26a01b320f05d66727e9d220d5858cdac203ff62e4b9ced1cafc2683637
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ntuser{4CB43D7F-7DCA-4906-8698-FFFFFFFF80CD9101}.pol

        • Path C:\Users\Public\Documents\ntuser{4CB43D7F-7DCA-4906-8698-FFFFFFFF80CD9101}.pol
        • Size 4B
        • SHA256 443c07a2c83b7b0253a325d2b72ac757c3aa5b41cd749842bc74fb3ee9b26866
        • MD5 SHA1 SHA512

        apidsp.scr

        • Path C:\Windows\SysWOW64\apidsp.scr
        • Size 2.5MB
        • SHA256 c94cd6ba2b4f950f192ed487c897491152e69e4223d49241243ae0468fabcd34
        • MD5 SHA1 SHA512 SSDEEP TLSH

        hostsrv.exe

        • Path C:\Windows\SysWOW64\hostsrv.exe
        • Size 2.5MB
        • SHA256 3517bcc1145d9f2f65e3a6f739380dda23b60911d3928ca4179406a2522cc4ab
        • MD5 SHA1 SHA512 SSDEEP TLSH

        sysinf.exe

        • Path C:\Windows\SysWOW64\sysinf.exe
        • Size 1.8MB
        • SHA256 dacef2cae899f32cc164b53f78f3f8d853d145f5f0fdc90238e09b9d38a5ad36
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1596-40-0x0000000000400000-0x00000000005B4000-memory.dmp

        memory/1596-79-0x0000000000400000-0x00000000005B4000-memory.dmp

        memory/1836-80-0x0000000000400000-0x00000000005B4000-memory.dmp

        memory/1836-81-0x0000000000400000-0x00000000005B4000-memory.dmp

        memory/1836-83-0x0000000000400000-0x00000000005B4000-memory.dmp

        memory/1836-85-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/2408-3-0x0000000000400000-0x00000000005B4000-memory.dmp

        memory/2408-4-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/2408-0-0x0000000000400000-0x00000000005B4000-memory.dmp

        memory/2408-2-0x0000000000400000-0x00000000005B4000-memory.dmp

        memory/2408-5-0x0000000000400000-0x00000000005B4000-memory.dmp

        memory/2408-1-0x0000000000423000-0x0000000000424000-memory.dmp