Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/11/2024, 01:26

General

  • Target
    b32c182598a85ff194f0baf8aa02c784f11de18a3b76f95de3f3d2fb229a7a99.exe
  • Size 3.6MB
  • Sample241109-bthlfathmc
  • SHA256 b32c182598a85ff194f0baf8aa02c784f11de18a3b76f95de3f3d2fb229a7a99
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b32c182598a85ff194f0baf8aa02c784f11de18a3b76f95de3f3d2fb229a7a99.exe
    "C:\Users\Admin\AppData\Local\Temp\b32c182598a85ff194f0baf8aa02c784f11de18a3b76f95de3f3d2fb229a7a99.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    PID:4064

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        dr.dll

        • Path C:\Users\Admin\AppData\Local\Tencent\TxGameAssistant\TGBDownloader\dr.dll
        • Size 74KB
        • SHA256 5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67
        • MD5 SHA1 SHA512 SSDEEP