Analysis

  • max time kernel
    151s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/11/2022, 22:54

General

  • Target
    a4c273a9ef3205807d21920b1b1947a2ae6509c831504f962dd554e5a2033984.exe
  • Size 2.1MB
  • Sample221123-2v2ntaah45
  • SHA256 a4c273a9ef3205807d21920b1b1947a2ae6509c831504f962dd554e5a2033984
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 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.

  • Drops Chrome extension 5 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 9 IoCs

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

  • Drops file in Program Files directory 8 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a4c273a9ef3205807d21920b1b1947a2ae6509c831504f962dd554e5a2033984.exe
    "C:\Users\Admin\AppData\Local\Temp\a4c273a9ef3205807d21920b1b1947a2ae6509c831504f962dd554e5a2033984.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4384
    • C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\nhRoMa2rPyywN4Z.exe
      .\nhRoMa2rPyywN4Z.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops Chrome extension
      • Installs/modifies Browser Helper Object
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1360
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Program Files (x86)\YYOOutuBBeAdBloCke\XadfVBk60XYLxg.x64.dll"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2840
        • C:\Windows\system32\regsvr32.exe
          /s "C:\Program Files (x86)\YYOOutuBBeAdBloCke\XadfVBk60XYLxg.x64.dll"
          4⤵
          • Loads dropped DLL
          • Installs/modifies Browser Helper Object
          PID:4764

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        XadfVBk60XYLxg.dat

        • Path C:\Program Files (x86)\YYOOutuBBeAdBloCke\XadfVBk60XYLxg.dat
        • Size 6KB
        • SHA256 aa4522b189187a21bfdb73042379aa6fdb60b40ab2303c4e9d2687f5ae584b25
        • MD5 SHA1 SHA512 SSDEEP

        XadfVBk60XYLxg.dll

        • Path C:\Program Files (x86)\YYOOutuBBeAdBloCke\XadfVBk60XYLxg.dll
        • Size 618KB
        • SHA256 d40aa49822621713e0f79f6c9a187468251fc22559cb1bbd6b5f71a94819eeb7
        • MD5 SHA1 SHA512 SSDEEP

        XadfVBk60XYLxg.x64.dll

        • Path C:\Program Files (x86)\YYOOutuBBeAdBloCke\XadfVBk60XYLxg.x64.dll
        • Size 695KB
        • SHA256 81f98c4034227951bd4ad5e6d6a823bd112602f3550fd7066a01f16b8c8aca69
        • MD5 SHA1 SHA512 SSDEEP

        XadfVBk60XYLxg.x64.dll

        • Path C:\Program Files (x86)\YYOOutuBBeAdBloCke\XadfVBk60XYLxg.x64.dll
        • Size 695KB
        • SHA256 81f98c4034227951bd4ad5e6d6a823bd112602f3550fd7066a01f16b8c8aca69
        • MD5 SHA1 SHA512 SSDEEP

        XadfVBk60XYLxg.x64.dll

        • Path C:\Program Files (x86)\YYOOutuBBeAdBloCke\XadfVBk60XYLxg.x64.dll
        • Size 695KB
        • SHA256 81f98c4034227951bd4ad5e6d6a823bd112602f3550fd7066a01f16b8c8aca69
        • MD5 SHA1 SHA512 SSDEEP

        bootstrap.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\[email protected]\bootstrap.js
        • Size 2KB
        • SHA256 6c325461fba531a94cf8cbdcfc52755494973df0629ce0ee3fef734ab0838fc4
        • MD5 SHA1 SHA512

        chrome.manifest

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\[email protected]\chrome.manifest
        • Size 35B
        • SHA256 f8e8a1116f09e3cd883a9df1cbd2673dbf763bcae1931baf15b306bbaba31679
        • MD5 SHA1 SHA512

        bg.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\[email protected]\content\bg.js
        • Size 7KB
        • SHA256 661ee01016a58cd126b9e6bc2033ab1434024d0c1b43cda101b95127220860f2
        • MD5 SHA1 SHA512 SSDEEP

        install.rdf

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\[email protected]\install.rdf
        • Size 605B
        • SHA256 ff9fb075cf99c7418309bd9f0845a9f9e18bc8f0d880bc3c85f708cc412b02ac
        • MD5 SHA1 SHA512

        XadfVBk60XYLxg.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\XadfVBk60XYLxg.dll
        • Size 618KB
        • SHA256 d40aa49822621713e0f79f6c9a187468251fc22559cb1bbd6b5f71a94819eeb7
        • MD5 SHA1 SHA512 SSDEEP

        XadfVBk60XYLxg.tlb

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\XadfVBk60XYLxg.tlb
        • Size 3KB
        • SHA256 0fc752f18e2f21a6d0b45fb9769deefe70d4690e72225037a37d1dc0553ae8ed
        • MD5 SHA1 SHA512

        XadfVBk60XYLxg.x64.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\XadfVBk60XYLxg.x64.dll
        • Size 695KB
        • SHA256 81f98c4034227951bd4ad5e6d6a823bd112602f3550fd7066a01f16b8c8aca69
        • MD5 SHA1 SHA512 SSDEEP

        nhRoMa2rPyywN4Z.dat

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\nhRoMa2rPyywN4Z.dat
        • Size 6KB
        • SHA256 aa4522b189187a21bfdb73042379aa6fdb60b40ab2303c4e9d2687f5ae584b25
        • MD5 SHA1 SHA512 SSDEEP

        nhRoMa2rPyywN4Z.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\nhRoMa2rPyywN4Z.exe
        • Size 634KB
        • SHA256 724380928512fc5261d5f42e64f7705fcdeae1410f24a8ec6b0a2ba783675cb4
        • MD5 SHA1 SHA512 SSDEEP

        nhRoMa2rPyywN4Z.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\nhRoMa2rPyywN4Z.exe
        • Size 634KB
        • SHA256 724380928512fc5261d5f42e64f7705fcdeae1410f24a8ec6b0a2ba783675cb4
        • MD5 SHA1 SHA512 SSDEEP

        background.html

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\oogjboeeepeiafmiapiheehokkkiomgb\background.html
        • Size 147B
        • SHA256 438463ec996c89919ef6e7507b479d9415c810c79ef6ec70f4114454a2198f60
        • MD5 SHA1 SHA512

        content.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\oogjboeeepeiafmiapiheehokkkiomgb\content.js
        • Size 144B
        • SHA256 332b00395bc23d4cb0bf6506b0fbb7e17d690ed41f91cf9b5d1c481cb1d3e82a
        • MD5 SHA1 SHA512

        lsdb.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\oogjboeeepeiafmiapiheehokkkiomgb\lsdb.js
        • Size 531B
        • SHA256 ea2caf61817c6f7781ee049217e51c1083c8fc4f1e08e07792052dfdfa529ae7
        • MD5 SHA1 SHA512

        manifest.json

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\oogjboeeepeiafmiapiheehokkkiomgb\manifest.json
        • Size 510B
        • SHA256 ddcfd418e86489df2a14e84b80c2b0d0b941f14511dee0e4558dfd031427582c
        • MD5 SHA1 SHA512

        xag9BEsxCu.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS9F42.tmp\oogjboeeepeiafmiapiheehokkkiomgb\xag9BEsxCu.js
        • Size 5KB
        • SHA256 0fa4a292d2ba19d5a645dfa2b94bf9cbf35e9be4d6da803f5a373786f41f9adf
        • MD5 SHA1 SHA512 SSDEEP