Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    05/08/2026, 00:16

General

  • Target
    2026-08-04_ce94b4c58e184661066e8ae87c19e6dd_amadey_cosmicduke_elex_glassworm_smoke-loader_tofsee.exe
  • Size 1.0MB
  • Sample260805-akmncstfle
  • SHA256 7a9e05fb8f233b7f5cdf83f0900c7b8defc05dbbe7564caab60d42cea6f95b31
  • 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 1 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
  • System Location Discovery: System Language Discovery 1 TTPs 3 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\2026-08-04_ce94b4c58e184661066e8ae87c19e6dd_amadey_cosmicduke_elex_glassworm_smoke-loader_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-04_ce94b4c58e184661066e8ae87c19e6dd_amadey_cosmicduke_elex_glassworm_smoke-loader_tofsee.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:4316
    • C:\Windows\SysWOW64\svcurl.exe
      C:\Windows\SysWOW64\svcurl.exe /combine local system
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2420
  • C:\Windows\SysWOW64\hostctf.exe
    C:\Windows\SysWOW64\hostctf.exe qph
    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:540
  • C:\Windows\SysWOW64\svcurl.exe
    C:\Windows\SysWOW64\svcurl.exe
    1⤵
    • Executes dropped EXE
    PID:3992
  • C:\Windows\SysWOW64\hostctf.exe
    C:\Windows\SysWOW64\hostctf.exe
    1⤵
    • Executes dropped EXE
    PID:2880

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        mgrctf.exe

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

        msenv.scr

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

        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

        hostctf.exe

        • Path C:\Windows\SysWOW64\hostctf.exe
        • Size 1.1MB
        • SHA256 f3bd54fe03d311606d86d1767e1ffda828e78b219c4d4b50a9b2265f4bb34c20
        • MD5 SHA1 SHA512 SSDEEP TLSH

        svcurl.exe

        • Path C:\Windows\SysWOW64\svcurl.exe
        • Size 1.5MB
        • SHA256 df5848ca9668d70be6fd9afced8f40163d1f78832aa685fb29b9cedb168a4b2b
        • MD5 SHA1 SHA512 SSDEEP TLSH