Resubmissions

16-09-2024 21:04

240916-zw13kazcpf 10

16-09-2024 20:09

240916-yw8xqsxenb 10

General

  • Target

    utweb_installer.exe

  • Size

    1.7MB

  • Sample

    240916-yw8xqsxenb

  • MD5

    adb84780e2db2c3643975b76ad57bba9

  • SHA1

    76d1b85e91f0aa8e322669429c1f638dba807b65

  • SHA256

    52984d792bb0fc6b530a989ef1c8389506fccf669e9a902597c135a42ff201f4

  • SHA512

    94572f68fba6f085b5936fd0827cb6b3ffaa480d9473e26f87122443743aec797f312e73fe6a827db9e645edef06f8a44a27c09d39f354ccf14485fe242322fe

  • SSDEEP

    24576:F7FUDowAyrTVE3U5FtFB5xG7wUTgNUYrT0TWmsMFZ2DzcbIZY4:FBuZrEUHB5xmc7Tl7c14

Malware Config

Targets

    • Target

      utweb_installer.exe

    • Size

      1.7MB

    • MD5

      adb84780e2db2c3643975b76ad57bba9

    • SHA1

      76d1b85e91f0aa8e322669429c1f638dba807b65

    • SHA256

      52984d792bb0fc6b530a989ef1c8389506fccf669e9a902597c135a42ff201f4

    • SHA512

      94572f68fba6f085b5936fd0827cb6b3ffaa480d9473e26f87122443743aec797f312e73fe6a827db9e645edef06f8a44a27c09d39f354ccf14485fe242322fe

    • SSDEEP

      24576:F7FUDowAyrTVE3U5FtFB5xG7wUTgNUYrT0TWmsMFZ2DzcbIZY4:FBuZrEUHB5xmc7Tl7c14

    • Cobalt Strike reflective loader

      Detects the reflective loader used by Cobalt Strike.

    • Cobaltstrike

      Detected malicious payload which is part of Cobaltstrike.

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Drops file in Drivers directory

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Downloads MZ/PE file

    • Enumerates connected drives

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

    • Modifies powershell logging option

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks