General

  • Target

    MONSTERMCProtector.zip

  • Size

    2.9MB

  • Sample

    231202-r27hjade3y

  • MD5

    e8a8b0cab9eb9a710fd7895ff764cc99

  • SHA1

    39bc39ee525a3e4c3d18fd5fb07cb15463fbc701

  • SHA256

    98c8e17db7c4e1f5cac1d3f8487e984802bb436a52620667d0c2ff602a6b1789

  • SHA512

    d7f14f6c57bb93748fff6f6f028955a20423cc184deb8e3427b79a3262944c7f26a0d4cfe626d16be1fddc53f104ce16610baf4cd72eb7224619248299dd55e2

  • SSDEEP

    49152:6btLYS4beqTlCIuvYiV5G+NxFczKZZsy6nqvJD5tlQLmd:6bRYS4CqTxYYiVk+NxFjZsylhDVjd

Malware Config

Targets

    • Target

      MONSTERMCProtector.zip

    • Size

      2.9MB

    • MD5

      e8a8b0cab9eb9a710fd7895ff764cc99

    • SHA1

      39bc39ee525a3e4c3d18fd5fb07cb15463fbc701

    • SHA256

      98c8e17db7c4e1f5cac1d3f8487e984802bb436a52620667d0c2ff602a6b1789

    • SHA512

      d7f14f6c57bb93748fff6f6f028955a20423cc184deb8e3427b79a3262944c7f26a0d4cfe626d16be1fddc53f104ce16610baf4cd72eb7224619248299dd55e2

    • SSDEEP

      49152:6btLYS4beqTlCIuvYiV5G+NxFczKZZsy6nqvJD5tlQLmd:6bRYS4CqTxYYiVk+NxFjZsylhDVjd

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • AgentTesla payload

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Maps connected drives based on registry

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks