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
    29/10/2026, 18:19

General

  • Target
    CryptoKit.UnionPay.exe
  • Size 4.2MB
  • Sample261029-wx7pysca64
  • SHA256 1fcee9cd4a4c1080d6acee16d6b7b1a9593971283da2a02f56406218d557ecb4
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 13 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Checks installed software on the system 1 TTPs

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

  • Drops Chrome extension 2 IoCs
  • Drops file in System32 directory 6 IoCs
  • Drops file in Program Files directory 23 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies trusted root certificate store through registry 1 TTPs 5 IoCs

    A root certificate was added, modified, or removed in the trusted certificate store registry paths.

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CryptoKit.UnionPay.exe
    "C:\Users\Admin\AppData\Local\Temp\CryptoKit.UnionPay.exe"
    1⤵
    • Loads dropped DLL
    • Drops Chrome extension
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" /u "C:\Windows\system32\CryptoKit.UnionPay.x86.dll" /s
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2176
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" /u "C:\Windows\system32\CryptoKit.CertEnrollment.UnionPay.x86.dll" /s
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4216
    • C:\Windows\system32\regsvr32.exe
      "regsvr32.exe" "C:\Windows\system32\CryptoKit.UnionPay.x64.dll" /s
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:2996
    • C:\Windows\system32\regsvr32.exe
      "regsvr32.exe" "C:\Windows\system32\CryptoKit.CertEnrollment.UnionPay.x64.dll" /s
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:3376
    • C:\Windows\SysWOW64\regsvr32.exe
      "regsvr32.exe" "C:\Windows\system32\CryptoKit.UnionPay.x86.dll" /s
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:3304
    • C:\Windows\SysWOW64\regsvr32.exe
      "regsvr32.exe" "C:\Windows\system32\CryptoKit.CertEnrollment.UnionPay.x86.dll" /s
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:4576
    • C:\Program Files (x86)\CFCA\CryptoKit.UnionPay\CertEnrollmentHost.UnionPay.x86.exe
      "C:\Program Files (x86)\CFCA\CryptoKit.UnionPay\CertEnrollmentHost.UnionPay.x86.exe" -i
      2⤵
      • Executes dropped EXE
      • Modifies trusted root certificate store through registry
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:244

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        CertEnrollmentHost.UnionPay.x86.exe

        • Path C:\Program Files (x86)\CFCA\CryptoKit.UnionPay\CertEnrollmentHost.UnionPay.x86.exe
        • Size 471KB
        • SHA256 efef0c8b21b12401cecdd82e079098970ffe669b4a7796ce13e60cd617795c97
        • MD5 SHA1 SHA512 SSDEEP TLSH

        eventPage.js

        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Extensions\flaibjgdieeiakhdmgpkcogifikjnjhk\3.2.0.6_0\eventPage.js
        • Size 3KB
        • SHA256 b24e2351df4b5f64f7ccd634e40672f28c551536c9966251bc61f324f1108769
        • MD5 SHA1 SHA512 TLSH

        icon-128.png

        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Extensions\flaibjgdieeiakhdmgpkcogifikjnjhk\3.2.0.6_0\icon-128.png
        • Size 5KB
        • SHA256 bea6391b6ddfc0ca53a11d6b762d67e055413a0cc7a2369b86c7b5906800dc7c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        icon-16.png

        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Extensions\flaibjgdieeiakhdmgpkcogifikjnjhk\3.2.0.6_0\icon-16.png
        • Size 619B
        • SHA256 c905d2d994ae4a3ccffc4292af05c45ea4c8095576901f20b54a46d84a029448
        • MD5 SHA1 SHA512 TLSH

        icon-48.png

        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Extensions\flaibjgdieeiakhdmgpkcogifikjnjhk\3.2.0.6_0\icon-48.png
        • Size 2KB
        • SHA256 b03c28aea1df52490e1cec0734e66a418bd92d2c9c49709a052847131a5cd09c
        • MD5 SHA1 SHA512 TLSH

        CrxInstaller.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsxFD38.tmp\CrxInstaller.dll
        • Size 758KB
        • SHA256 8e92441227f30d715dd9e39569e057f0bde5344e14f978e12f93cb6c6bea8eea
        • MD5 SHA1 SHA512 SSDEEP TLSH

        FindProcDLL.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsxFD38.tmp\FindProcDLL.dll
        • Size 4KB
        • SHA256 337781f4d7524150600ad958aaf3d78b5bcbd30e921759bc7d12e7488687348c
        • MD5 SHA1 SHA512 TLSH

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsxFD38.tmp\System.dll
        • Size 11KB
        • SHA256 03cd57ab00236c753e7ddeee8ee1c10839ace7c426769982365531042e1f6f8b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsExec.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsxFD38.tmp\nsExec.dll
        • Size 6KB
        • SHA256 8165c7aef7de3d3e0549776535bedc380ad9be7bb85e60ad6436f71528d092af
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CryptoKit.CertEnrollment.UnionPay.x86.dll

        • Path C:\Windows\SysWOW64\CryptoKit.CertEnrollment.UnionPay.x86.dll
        • Size 413KB
        • SHA256 0940e9492cb5d7e98e71bb0825afcc6d6ea8d1117a6eccc7304b606558a52911
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CryptoKit.UnionPay.x86.dll

        • Path C:\Windows\SysWOW64\CryptoKit.UnionPay.x86.dll
        • Size 379KB
        • SHA256 f77b1fe75e2403a369cd926e3ddf77bf20f7bb0ec4f72889cea0d10897f18f85
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CryptoKit.CertEnrollment.UnionPay.x64.dll

        • Path C:\Windows\system32\CryptoKit.CertEnrollment.UnionPay.x64.dll
        • Size 474KB
        • SHA256 87b7124d061fbf699316fd23f7992a1043c7f3a4a403f755c1201b10bc5fd423
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CryptoKit.UnionPay.x64.dll

        • Path C:\Windows\system32\CryptoKit.UnionPay.x64.dll
        • Size 436KB
        • SHA256 5878fad5492408132a674921bd3eb587014465641ab553c38859e59f2210ce08
        • MD5 SHA1 SHA512 SSDEEP TLSH