Analysis

  • max time kernel
    88s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2022, 05:02

General

  • Target

    51d3e0eb3011c3d97372f9365f78c4e90be2944e45eb3e4517906a13b37db21c.exe

  • Size

    2.3MB

  • MD5

    d549a6190c924c772ccd7955876f3c98

  • SHA1

    ad4e269a1e212b19a617216e347d5f3a4292640f

  • SHA256

    51d3e0eb3011c3d97372f9365f78c4e90be2944e45eb3e4517906a13b37db21c

  • SHA512

    5e4aa0eaff28eae5f8a5e2950bdf016ccb953c6378cf06fadb91f93167857c64eae09e02c3cf270f5b143ae7bea2e1006f9eddc639bc237175e1549bda190af2

  • SSDEEP

    49152:0UpX1ZyFHtTjlRW9raqaAxOpMyyrAugmMmj1WLXsr5YrltnOZncD0H2e6:XpX1ZoHtTjGpaqaWRFtMmjILXXDmTHG

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies system certificate store 2 TTPs 13 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\51d3e0eb3011c3d97372f9365f78c4e90be2944e45eb3e4517906a13b37db21c.exe
    "C:\Users\Admin\AppData\Local\Temp\51d3e0eb3011c3d97372f9365f78c4e90be2944e45eb3e4517906a13b37db21c.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1120
    • C:\Users\Admin\AppData\Local\Temp\51d3e0eb3011c3d97372f9365f78c4e90be2944e45eb3e4517906a13b37db21c.exe
      C:\Users\Admin\AppData\Local\Temp\51d3e0eb3011c3d97372f9365f78c4e90be2944e45eb3e4517906a13b37db21c.exe --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=63.0.3368.94 --initial-client-data=0x270,0x28c,0x290,0x288,0x294,0x74d4f558,0x74d4f568,0x74d4f574
      2⤵
      • Loads dropped DLL
      PID:5016
    • C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\51d3e0eb3011c3d97372f9365f78c4e90be2944e45eb3e4517906a13b37db21c.exe
      "C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\51d3e0eb3011c3d97372f9365f78c4e90be2944e45eb3e4517906a13b37db21c.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:4160

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\51d3e0eb3011c3d97372f9365f78c4e90be2944e45eb3e4517906a13b37db21c.exe

          Filesize

          2.3MB

          MD5

          d549a6190c924c772ccd7955876f3c98

          SHA1

          ad4e269a1e212b19a617216e347d5f3a4292640f

          SHA256

          51d3e0eb3011c3d97372f9365f78c4e90be2944e45eb3e4517906a13b37db21c

          SHA512

          5e4aa0eaff28eae5f8a5e2950bdf016ccb953c6378cf06fadb91f93167857c64eae09e02c3cf270f5b143ae7bea2e1006f9eddc639bc237175e1549bda190af2

        • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2210310602401961120.dll

          Filesize

          3.2MB

          MD5

          fe376e88ae5d8371834eec7e37388121

          SHA1

          35997c232a485a66255946dd2ee05ed48f0f0ff3

          SHA256

          76651c23343b95a15d0e540968204522c9805a723cea7b1be7cebcb3c7d408e6

          SHA512

          eae54e166abb63d3cbc44d0c8ccba22c2cbe6714aec53fb4c523463aca5ee61cc18442115570f8745b64fde58dea137c8f6f20f4e6de615b2a069f7ead3133e0

        • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2210310602426175016.dll

          Filesize

          3.2MB

          MD5

          fe376e88ae5d8371834eec7e37388121

          SHA1

          35997c232a485a66255946dd2ee05ed48f0f0ff3

          SHA256

          76651c23343b95a15d0e540968204522c9805a723cea7b1be7cebcb3c7d408e6

          SHA512

          eae54e166abb63d3cbc44d0c8ccba22c2cbe6714aec53fb4c523463aca5ee61cc18442115570f8745b64fde58dea137c8f6f20f4e6de615b2a069f7ead3133e0

        • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2210310602438524160.dll

          Filesize

          3.2MB

          MD5

          fe376e88ae5d8371834eec7e37388121

          SHA1

          35997c232a485a66255946dd2ee05ed48f0f0ff3

          SHA256

          76651c23343b95a15d0e540968204522c9805a723cea7b1be7cebcb3c7d408e6

          SHA512

          eae54e166abb63d3cbc44d0c8ccba22c2cbe6714aec53fb4c523463aca5ee61cc18442115570f8745b64fde58dea137c8f6f20f4e6de615b2a069f7ead3133e0

        • C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports\settings.dat

          Filesize

          40B

          MD5

          661425c202dc9753e20af0010690068b

          SHA1

          75e8761a891c32b5ba5ae5bc0da50b0dd7fcbc1a

          SHA256

          5df94837de2778724295959ee810001043ad471ee0682da6a3855b88d27c4123

          SHA512

          a5bfa53e64a3f3d7f7fb723a2f74b1130d1e5d825a0214f51f59e46556b009d9c285a82d53b16b8166921d298ee2fe69056b05bc025459856895b9732c06dfe3

        • memory/1120-132-0x0000000000250000-0x0000000000690000-memory.dmp

          Filesize

          4.2MB

        • memory/1120-143-0x0000000000250000-0x0000000000690000-memory.dmp

          Filesize

          4.2MB

        • memory/4160-140-0x0000000000FD0000-0x0000000001410000-memory.dmp

          Filesize

          4.2MB

        • memory/4160-142-0x0000000000FD0000-0x0000000001410000-memory.dmp

          Filesize

          4.2MB

        • memory/5016-136-0x0000000000250000-0x0000000000690000-memory.dmp

          Filesize

          4.2MB