Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/05/2026, 13:07

General

  • Target
    2026-05-22_ba32833674eea39ae3b546461226cc43_elex_smoke-loader_stop.exe
  • Size 1.7MB
  • Sample260522-qcxrcset5x
  • SHA256 8115fecba76b58f239a8d146c8f2a617edddc0c4c224e3143a27bc91589f6f1d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Checks BIOS information in registry 2 TTPs 6 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 8 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 33 IoCs
  • NTFS ADS 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-22_ba32833674eea39ae3b546461226cc43_elex_smoke-loader_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-22_ba32833674eea39ae3b546461226cc43_elex_smoke-loader_stop.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3788
    • C:\Users\Admin\AppData\Local\Temp\wocualts.exe
      "C:\Users\Admin\AppData\Local\Temp\wocualts.exe"
      2⤵
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • NTFS ADS
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3300
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Windows\system32\vbzip11.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3344
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Windows\system32\vbzip11.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4504
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Windows\system32\vbzip11.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4712
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Windows\system32\vbzip11.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4892
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Users\Admin\AppData\Local\Temp\vbzip11.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3944
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Users\Admin\AppData\Local\Temp\vbzip11.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1076
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Users\Admin\AppData\Local\Temp\vbzip11.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:808
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Users\Admin\AppData\Local\Temp\vbzip11.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4116
  • C:\Users\Admin\AppData\Local\Temp\wocualts.exe
    C:\Users\Admin\AppData\Local\Temp\wocualts.exe
    1⤵
    • Checks BIOS information in registry
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • NTFS ADS
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:1700

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        TEMP:C9C13817

        • Path C:\ProgramData\TEMP:C9C13817
        • Size 112B
        • SHA256 e9f8e3835de77b6d4dcefc3934af545f12560cb6c0bedd1bf38a057a92805b06
        • MD5 SHA1 SHA512 TLSH

        TEMP:C9C13817

        • Path C:\ProgramData\TEMP:C9C13817
        • Size 112B
        • SHA256 7b74474f87665e114b9ec1f1fcea79539dfff0a202c7c793ad081b17527711da
        • MD5 SHA1 SHA512 TLSH

        micka.exe

        • Path C:\Users\Admin\AppData\Local\Temp\micka.exe
        • Size 128B
        • SHA256 38723a2e5e8a17aa7950dc008209944e898f69a7bd10a23c839d341e935fd5ca
        • MD5 SHA1 SHA512

        wocualts.exe

        • Path C:\Users\Admin\AppData\Local\Temp\wocualts.exe
        • Size 1.7MB
        • SHA256 8115fecba76b58f239a8d146c8f2a617edddc0c4c224e3143a27bc91589f6f1d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        vbzip11.dll

        • Path C:\Windows\SysWOW64\vbzip11.dll
        • Size 144KB
        • SHA256 d13f6334c4cb124052d658e687a0394fb431447e5239a4f8be576c9c416705ca
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1700-107-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/1700-111-0x00000000021A0000-0x0000000002288000-memory.dmp

        memory/1700-109-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/1700-110-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/1700-108-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/1700-103-0x00000000021A0000-0x0000000002288000-memory.dmp

        memory/1700-102-0x00000000021A0000-0x0000000002288000-memory.dmp

        memory/1700-100-0x00000000021A0000-0x0000000002288000-memory.dmp

        memory/1700-95-0x00000000021A0000-0x0000000002288000-memory.dmp

        memory/1700-116-0x00000000021A0000-0x0000000002288000-memory.dmp

        memory/1700-118-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3300-54-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3300-91-0x00000000021B0000-0x0000000002298000-memory.dmp

        memory/3300-46-0x00000000021B0000-0x0000000002298000-memory.dmp

        memory/3300-47-0x00000000021B0000-0x0000000002298000-memory.dmp

        memory/3300-44-0x00000000021B0000-0x0000000002298000-memory.dmp

        memory/3300-119-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3300-39-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3300-58-0x00000000021B0000-0x0000000002298000-memory.dmp

        memory/3300-56-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3300-38-0x00000000021B0000-0x0000000002298000-memory.dmp

        memory/3300-55-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3300-53-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3788-14-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3788-13-0x0000000002240000-0x0000000002328000-memory.dmp

        memory/3788-23-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3788-21-0x0000000002240000-0x0000000002328000-memory.dmp

        memory/3788-16-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3788-17-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3788-1-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3788-18-0x0000000002240000-0x0000000002328000-memory.dmp

        memory/3788-57-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3788-15-0x0000000000400000-0x0000000000620000-memory.dmp

        memory/3788-11-0x0000000002240000-0x0000000002328000-memory.dmp

        memory/3788-10-0x0000000002240000-0x0000000002328000-memory.dmp

        memory/3788-8-0x0000000002240000-0x0000000002328000-memory.dmp

        memory/3788-3-0x0000000002240000-0x0000000002328000-memory.dmp

        memory/3788-50-0x0000000002240000-0x0000000002328000-memory.dmp

        memory/3788-2-0x0000000000495000-0x0000000000496000-memory.dmp