Analysis

  • max time kernel
    139s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:50

General

  • Target

    9f5b423a9328974ee01c625ab5338e698fa19f711c233ba941489eb802dadc96.exe

  • Size

    1.1MB

  • MD5

    598b8633e7ca22ed1fb1f90d13215880

  • SHA1

    01cd937912b153bad8bb9ee2c7314cb03b65fc5e

  • SHA256

    9f5b423a9328974ee01c625ab5338e698fa19f711c233ba941489eb802dadc96

  • SHA512

    5899fdff91b6901363fad1f9b88f7150a264eba207f47819540af4576a44f03f64b267cf5dfb5b699d4b6955eda1708c18e59dbb5e66cbc3ac53b4849cddf601

Malware Config

Signatures

  • Buer

    Buer is a new modular loader first seen in August 2019.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Buer Loader 4 IoCs

    Detects Buer loader in memory or disk.

  • Executes dropped EXE 1 IoCs
  • VMProtect packed file 3 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9f5b423a9328974ee01c625ab5338e698fa19f711c233ba941489eb802dadc96.exe
    "C:\Users\Admin\AppData\Local\Temp\9f5b423a9328974ee01c625ab5338e698fa19f711c233ba941489eb802dadc96.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1900
    • C:\ProgramData\RedTools\networker.exe
      C:\ProgramData\RedTools\networker.exe "C:\Users\Admin\AppData\Local\Temp\9f5b423a9328974ee01c625ab5338e698fa19f711c233ba941489eb802dadc96.exe" ensgJJ
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Deletes itself
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:316
      • C:\Windows\SysWOW64\secinit.exe
        C:\ProgramData\RedTools\networker.exe
        3⤵
          PID:1752

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1752-4-0x0000000000080000-0x0000000000081000-memory.dmp

      Filesize

      4KB