Analysis

  • max time kernel
    185s
  • max time network
    189s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/11/2022, 19:43

General

  • Target
    c22eb6455aa61cd9cec812f19827a4a09000f537ed841598fe47d9d80d249936.exe
  • Size 2.5MB
  • Sample221124-yfcjlaef28
  • SHA256 c22eb6455aa61cd9cec812f19827a4a09000f537ed841598fe47d9d80d249936
  • 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c22eb6455aa61cd9cec812f19827a4a09000f537ed841598fe47d9d80d249936.exe
    "C:\Users\Admin\AppData\Local\Temp\c22eb6455aa61cd9cec812f19827a4a09000f537ed841598fe47d9d80d249936.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4372
    • C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\sKFtMPQdlhE3jvm.exe
      .\sKFtMPQdlhE3jvm.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops Chrome extension
      • Installs/modifies Browser Helper Object
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3496
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s "C:\Program Files (x86)\GoSave\K39UAGkB3Qo5MW.x64.dll"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:904
        • C:\Windows\system32\regsvr32.exe
          /s "C:\Program Files (x86)\GoSave\K39UAGkB3Qo5MW.x64.dll"
          4⤵
          • Loads dropped DLL
          • Installs/modifies Browser Helper Object
          PID:3120

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        K39UAGkB3Qo5MW.dat

        • Path C:\Program Files (x86)\GoSave\K39UAGkB3Qo5MW.dat
        • Size 6KB
        • SHA256 1f2c881c09a5b3c950d9a05a7ed98b373072761a5fb472539cdfb98e0614ae5a
        • MD5 SHA1 SHA512 SSDEEP

        K39UAGkB3Qo5MW.dll

        • Path C:\Program Files (x86)\GoSave\K39UAGkB3Qo5MW.dll
        • Size 751KB
        • SHA256 a40c397aa1d9c03137df2edf100a2b26fe61b59d88ed3a61d8ad611a03adb2ef
        • MD5 SHA1 SHA512 SSDEEP

        K39UAGkB3Qo5MW.x64.dll

        • Path C:\Program Files (x86)\GoSave\K39UAGkB3Qo5MW.x64.dll
        • Size 893KB
        • SHA256 72f2e5818632af4cb7bb0adf08831852c7a55704c8a10e7a231da08fd2a20bfd
        • MD5 SHA1 SHA512 SSDEEP

        K39UAGkB3Qo5MW.x64.dll

        • Path C:\Program Files (x86)\GoSave\K39UAGkB3Qo5MW.x64.dll
        • Size 893KB
        • SHA256 72f2e5818632af4cb7bb0adf08831852c7a55704c8a10e7a231da08fd2a20bfd
        • MD5 SHA1 SHA512 SSDEEP

        K39UAGkB3Qo5MW.x64.dll

        • Path C:\Program Files (x86)\GoSave\K39UAGkB3Qo5MW.x64.dll
        • Size 893KB
        • SHA256 72f2e5818632af4cb7bb0adf08831852c7a55704c8a10e7a231da08fd2a20bfd
        • MD5 SHA1 SHA512 SSDEEP

        K39UAGkB3Qo5MW.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\K39UAGkB3Qo5MW.dll
        • Size 751KB
        • SHA256 a40c397aa1d9c03137df2edf100a2b26fe61b59d88ed3a61d8ad611a03adb2ef
        • MD5 SHA1 SHA512 SSDEEP

        K39UAGkB3Qo5MW.tlb

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\K39UAGkB3Qo5MW.tlb
        • Size 3KB
        • SHA256 8d3c02cc5277c8e19048fcdfbc924b0f3993503e77005299aa9babd3b0394370
        • MD5 SHA1 SHA512

        K39UAGkB3Qo5MW.x64.dll

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\K39UAGkB3Qo5MW.x64.dll
        • Size 893KB
        • SHA256 72f2e5818632af4cb7bb0adf08831852c7a55704c8a10e7a231da08fd2a20bfd
        • MD5 SHA1 SHA512 SSDEEP

        bootstrap.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\[email protected]\bootstrap.js
        • Size 2KB
        • SHA256 6c325461fba531a94cf8cbdcfc52755494973df0629ce0ee3fef734ab0838fc4
        • MD5 SHA1 SHA512

        chrome.manifest

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\[email protected]\chrome.manifest
        • Size 35B
        • SHA256 effb04b2494a0e2b1601a9dd6ee233c3e605ce089e251c9ab40affab698bdf73
        • MD5 SHA1 SHA512

        bg.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\[email protected]\content\bg.js
        • Size 7KB
        • SHA256 d2d1c330da57b8b0eca3fcb8beadd6fd4a3e34c75abb5bed227411bcd064bae0
        • MD5 SHA1 SHA512 SSDEEP

        install.rdf

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\[email protected]\install.rdf
        • Size 599B
        • SHA256 8e70f69bec150b007491fd208a4e727c2182371596a831e00841c7f0c525c309
        • MD5 SHA1 SHA512

        YFQS.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\gifggbmfoaopmklbalffnjeobjafjlin\YFQS.js
        • Size 5KB
        • SHA256 502af8ea22b34334072d1157c8202f5f679a586faf420b34ba65bf4a304a90d0
        • MD5 SHA1 SHA512 SSDEEP

        background.html

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\gifggbmfoaopmklbalffnjeobjafjlin\background.html
        • Size 141B
        • SHA256 c519afdede47e5231a182a310061e7d62b1706edae3a3ee2aed925637055fd0e
        • MD5 SHA1 SHA512

        content.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\gifggbmfoaopmklbalffnjeobjafjlin\content.js
        • Size 144B
        • SHA256 332b00395bc23d4cb0bf6506b0fbb7e17d690ed41f91cf9b5d1c481cb1d3e82a
        • MD5 SHA1 SHA512

        lsdb.js

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\gifggbmfoaopmklbalffnjeobjafjlin\lsdb.js
        • Size 531B
        • SHA256 ea2caf61817c6f7781ee049217e51c1083c8fc4f1e08e07792052dfdfa529ae7
        • MD5 SHA1 SHA512

        manifest.json

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\gifggbmfoaopmklbalffnjeobjafjlin\manifest.json
        • Size 498B
        • SHA256 e4aa7c089e32d14ddf584e9de6d007ec16581cd30c248ff7284bc0eb7757d4af
        • MD5 SHA1 SHA512

        sKFtMPQdlhE3jvm.dat

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\sKFtMPQdlhE3jvm.dat
        • Size 6KB
        • SHA256 1f2c881c09a5b3c950d9a05a7ed98b373072761a5fb472539cdfb98e0614ae5a
        • MD5 SHA1 SHA512 SSDEEP

        sKFtMPQdlhE3jvm.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\sKFtMPQdlhE3jvm.exe
        • Size 772KB
        • SHA256 c54b01f36010744726e69c473ab871f3dd0503333a428fa09d7216c3c3d1d661
        • MD5 SHA1 SHA512 SSDEEP

        sKFtMPQdlhE3jvm.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS1240.tmp\sKFtMPQdlhE3jvm.exe
        • Size 772KB
        • SHA256 c54b01f36010744726e69c473ab871f3dd0503333a428fa09d7216c3c3d1d661
        • MD5 SHA1 SHA512 SSDEEP