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Resubmissions

12/03/2024, 12:15

240312-pezs3aad78 10

11/03/2024, 18:38

240311-xaablscg82 10

General

  • Target

    Builder.exe

  • Size

    6.0MB

  • Sample

    240312-pezs3aad78

  • MD5

    ec995aa1b938ce1b443d7625aebef20f

  • SHA1

    460688fb176ccaa1bc2c9845b9e418c57ab96cbc

  • SHA256

    4aa9b9dff3db2b5a07090069c13581f99fe7a8ab3d3b37917a49312de4df12c3

  • SHA512

    1e032f80c693c30a17497db179b9078ac783d988f08f9f52dd5b62e59d05821636cec8d368fe7e7439301c4c32a8753975ed0b88c73e96dc62c8dc50d251e339

  • SSDEEP

    98304:vwIu4+Dc0tIlamaHl3Ne4i3gDUZnhhM7M+yvFaW9cIzaF6ARwDtyDe2HrMgK3Uom:vrp+DMgeNoInY7/sHfbRy9AgdTZ

Malware Config

Targets

    • Target

      Builder.exe

    • Size

      6.0MB

    • MD5

      ec995aa1b938ce1b443d7625aebef20f

    • SHA1

      460688fb176ccaa1bc2c9845b9e418c57ab96cbc

    • SHA256

      4aa9b9dff3db2b5a07090069c13581f99fe7a8ab3d3b37917a49312de4df12c3

    • SHA512

      1e032f80c693c30a17497db179b9078ac783d988f08f9f52dd5b62e59d05821636cec8d368fe7e7439301c4c32a8753975ed0b88c73e96dc62c8dc50d251e339

    • SSDEEP

      98304:vwIu4+Dc0tIlamaHl3Ne4i3gDUZnhhM7M+yvFaW9cIzaF6ARwDtyDe2HrMgK3Uom:vrp+DMgeNoInY7/sHfbRy9AgdTZ

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • UPX packed file

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

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

    • Enumerates connected drives

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Enterprise v15

Tasks