Analysis

  • max time kernel
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/09/2026, 00:20

General

  • Target
    $TEMP/ytb.exe
  • Size 2.2MB
  • Sample260913-amvrraycme
  • SHA256 7ab505da56855344404834de64efa3c3bf396cb051f09f849c5ec24c1dacb0a5
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 42 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$TEMP\ytb.exe
    "C:\Users\Admin\AppData\Local\Temp\$TEMP\ytb.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5652
    • C:\Users\Admin\AppData\Local\Temp\nsh6ECE.tmp\ytb_setup.exe
      "C:\Users\Admin\AppData\Local\Temp\nsh6ECE.tmp\ytb_setup.exe" /ybsini=C:\Users\Admin\AppData\Local\Temp\nsh6ECE.tmp\BOOTST~1.INI
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2616

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsh6ECE.tmp\System.dll
        • Size 9KB
        • SHA256 fd58286ab8abf3400912809a78d679f75b8054878e804a8e9767b2379f184f71
        • MD5 SHA1 SHA512 SSDEEP TLSH

        bootstrap.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nsh6ECE.tmp\bootstrap.ini
        • Size 480B
        • SHA256 edd24217e36177e37ed0b5aa8bac24e60ac9058ae9afa971fcdf69432b0b6276
        • MD5 SHA1 SHA512 TLSH

        nsisProcMgr_U.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsh6ECE.tmp\nsisProcMgr_U.dll
        • Size 52KB
        • SHA256 657fb9d2407e65eb4f8ea74ec97cbcfd2c85c2e06422836ddbf3688b3c4da0fe
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ytb_setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\nsh6ECE.tmp\ytb_setup.exe
        • Size 1.9MB
        • SHA256 d5832cf2b429e366e9642fef77839606697f47dbbb98d8f201022e2cfabaab45
        • MD5 SHA1 SHA512 SSDEEP TLSH

        InstallOptions.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsu743D.tmp\InstallOptions.dll
        • Size 15KB
        • SHA256 a0bbb60b8651fb0f10384f38c33fd16600996b6c2c041480326d3cf5d0f54ec4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        privacy.unicode.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nsu743D.tmp\privacy.unicode.ini
        • Size 2KB
        • SHA256 aebca120b26bc07bee9d0e8c365c667c3dd84d44089ecc2b99132a5e80ed74fb
        • MD5 SHA1 SHA512 TLSH

        privacy.unicode.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nsu743D.tmp\privacy.unicode.ini
        • Size 3KB
        • SHA256 0a6ee7566e7e592e0bb08bae4123327d900f499bfe080752ef9bce8e5c375f7b
        • MD5 SHA1 SHA512 TLSH

        welcome.unicode.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nsu743D.tmp\welcome.unicode.ini
        • Size 2KB
        • SHA256 c2e1fa972dc7166fadd17302280567884012d8b37a67a658b303d2c3a6fc8c22
        • MD5 SHA1 SHA512 TLSH

        welcome.unicode.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nsu743D.tmp\welcome.unicode.ini
        • Size 2KB
        • SHA256 d1f9018626e38efb5bdb4a232727e2b15e910e481ddcade66d4a9e1773ec80b5
        • MD5 SHA1 SHA512 TLSH

        welcome.unicode.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nsu743D.tmp\welcome.unicode.ini
        • Size 2KB
        • SHA256 597bd25b1e67ed77f08240e524d9c3cd1f5ef766cef2b9cc0d94842adabcdc0c
        • MD5 SHA1 SHA512 TLSH