General

  • Target

    bfb49b198bec40507f48ae692234f001c7b0daf41c5efd93bbce37c3f9082e60.exe

  • Size

    4.2MB

  • Sample

    240414-b3c3bach56

  • MD5

    88c9cb2995c96df8d838a12ea9ce4dd0

  • SHA1

    bd9036aafaf4bc173d3094eb37c52bef4b6d0b9e

  • SHA256

    bfb49b198bec40507f48ae692234f001c7b0daf41c5efd93bbce37c3f9082e60

  • SHA512

    aaf43c0182a621c6677f2f613ed31cd187849c89793d06f91326d39ac99178662daca987a8a03bcd7a2dcb6f10b8e61570b3d9c2d218e05a1194b2e1bd50eb7f

  • SSDEEP

    98304:mxYk/Wd4gprCGADohyqBdv1Fi5ytzZrDpDNU:YnWmu2kBdS54nBNU

Malware Config

Targets

    • Target

      bfb49b198bec40507f48ae692234f001c7b0daf41c5efd93bbce37c3f9082e60.exe

    • Size

      4.2MB

    • MD5

      88c9cb2995c96df8d838a12ea9ce4dd0

    • SHA1

      bd9036aafaf4bc173d3094eb37c52bef4b6d0b9e

    • SHA256

      bfb49b198bec40507f48ae692234f001c7b0daf41c5efd93bbce37c3f9082e60

    • SHA512

      aaf43c0182a621c6677f2f613ed31cd187849c89793d06f91326d39ac99178662daca987a8a03bcd7a2dcb6f10b8e61570b3d9c2d218e05a1194b2e1bd50eb7f

    • SSDEEP

      98304:mxYk/Wd4gprCGADohyqBdv1Fi5ytzZrDpDNU:YnWmu2kBdS54nBNU

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • Windows security bypass

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects executables Discord URL observed in first stage droppers

    • Detects executables containing URLs to raw contents of a Github gist

    • Detects executables containing artifacts associated with disabling Widnows Defender

    • Detects executables referencing many varying, potentially fake Windows User-Agents

    • Modifies boot configuration data using bcdedit

    • UPX dump on OEP (original entry point)

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • Possible attempt to disable PatchGuard

      Rootkits can use kernel patching to embed themselves in an operating system.

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

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

    • Windows security modification

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Manipulates WinMon driver.

      Roottkits write to WinMon to hide PIDs from being detected.

    • Manipulates WinMonFS driver.

      Roottkits write to WinMonFS to hide directories/files from being detected.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks