Analysis

  • max time kernel
    91s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2022, 18:15

General

  • Target
    347ee9331348778d87a0f67c4d2f86a6b75eefe1dd2a32ff6a69e5ff8d94bd6b.exe
  • Size 255KB
  • Sample221205-wv2e6adc32
  • SHA256 347ee9331348778d87a0f67c4d2f86a6b75eefe1dd2a32ff6a69e5ff8d94bd6b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 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.

  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 4 IoCs
  • Modifies registry class 63 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\347ee9331348778d87a0f67c4d2f86a6b75eefe1dd2a32ff6a69e5ff8d94bd6b.exe
    "C:\Users\Admin\AppData\Local\Temp\347ee9331348778d87a0f67c4d2f86a6b75eefe1dd2a32ff6a69e5ff8d94bd6b.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2284
    • C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\setup.exe
      .\setup.exe /s
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      • System policy modification
      PID:4636

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        bhoclass.dll

        • Path C:\ProgramData\Bcool\bhoclass.dll
        • Size 164KB
        • SHA256 25ab733f417a9def519ff2443f38cff31baa02743cac803f53f662c875b9be5f
        • MD5 SHA1 SHA512 SSDEEP

        bootstrap.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\[email protected]\bootstrap.js
        • Size 2KB
        • SHA256 e12cf6794432571425714261d2118728536cf283963cccf8f1f7439945acd19e
        • MD5 SHA1 SHA512

        chrome.manifest

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\[email protected]\chrome.manifest
        • Size 116B
        • SHA256 de395c43f3e00238085896f8ce384c65bc175d136dfcbda75aee6e8c714a2ac5
        • MD5 SHA1 SHA512

        bg.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\[email protected]\content\bg.js
        • Size 8KB
        • SHA256 bae7c351a599a9c46e25f0d1fed1ada9e8a89c8cd3a8f08aa77a819f8b0390da
        • MD5 SHA1 SHA512 SSDEEP

        zy.xul

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\[email protected]\content\zy.xul
        • Size 225B
        • SHA256 ea63bf7dc4c5e44e81c3da9edea4a8332e4313580f5fc1743a8762411c7f9c4c
        • MD5 SHA1 SHA512

        install.rdf

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\[email protected]\install.rdf
        • Size 705B
        • SHA256 5968ba3538e3dccf5c1c83bbc1801903f558b0568e13a240f7ca232219406381
        • MD5 SHA1 SHA512

        background.html

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\background.html
        • Size 4KB
        • SHA256 2074be8b5e036c2475dcaf809fe91761666d4374ac79c89393f7086f14a2aacf
        • MD5 SHA1 SHA512 SSDEEP

        bhoclass.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\bhoclass.dll
        • Size 164KB
        • SHA256 25ab733f417a9def519ff2443f38cff31baa02743cac803f53f662c875b9be5f
        • MD5 SHA1 SHA512 SSDEEP

        content.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\content.js
        • Size 387B
        • SHA256 8d055be6f408351be6097a4d30179907f5c37ec0b5413f73096c8fee25d408e4
        • MD5 SHA1 SHA512

        felfhbennoninbgofgpgacfhjljfngnm.crx

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\felfhbennoninbgofgpgacfhjljfngnm.crx
        • Size 3KB
        • SHA256 db584cacc5497824450129f602de27bbddff30f5154da192513d135384b9a6d6
        • MD5 SHA1 SHA512

        settings.ini

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\settings.ini
        • Size 650B
        • SHA256 5d3e2e9b940715d34665db3ab92a64970b2817feb8ceee8d8658621aca6c581a
        • MD5 SHA1 SHA512

        setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\setup.exe
        • Size 61KB
        • SHA256 6b9a2b64b90799f1d50458dc38fb4e9e13a8abb37210c8f5d9eeedae84c6912f
        • MD5 SHA1 SHA512 SSDEEP

        setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCE80.tmp\setup.exe
        • Size 61KB
        • SHA256 6b9a2b64b90799f1d50458dc38fb4e9e13a8abb37210c8f5d9eeedae84c6912f
        • MD5 SHA1 SHA512 SSDEEP