General

  • Target

    .

  • Size

    146KB

  • Sample

    240405-qhvtysdf23

  • MD5

    76bda9b59d5aac22de246d89bcfb75e1

  • SHA1

    4d965319a9a2af9271b97913a5e93c1aae032c8d

  • SHA256

    a76364703233d375b024d5f3ca5415e42dd7283643cf67b8a50cba691c659c9f

  • SHA512

    5c821c3866c7a6b5359efda20dd785f67bd333ba1f4cb80c9c74936f1ee9a265cff4d0c32c018d762968f33eb6452daac903b33845ca34ecacb3a7af391db128

  • SSDEEP

    1536:oukud8LFVMUK4DgnVR4DBllKoVkL30vD9329s4DCHhqiS:dkPLFoVsllXmxUHhqiS

Malware Config

Targets

    • Target

      .

    • Size

      146KB

    • MD5

      76bda9b59d5aac22de246d89bcfb75e1

    • SHA1

      4d965319a9a2af9271b97913a5e93c1aae032c8d

    • SHA256

      a76364703233d375b024d5f3ca5415e42dd7283643cf67b8a50cba691c659c9f

    • SHA512

      5c821c3866c7a6b5359efda20dd785f67bd333ba1f4cb80c9c74936f1ee9a265cff4d0c32c018d762968f33eb6452daac903b33845ca34ecacb3a7af391db128

    • SSDEEP

      1536:oukud8LFVMUK4DgnVR4DBllKoVkL30vD9329s4DCHhqiS:dkPLFoVsllXmxUHhqiS

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Installed Components in the registry

    • Modifies Windows Firewall

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Sets service image path in registry

    • Stops running service(s)

    • Uses Session Manager for persistence

      Creates Session Manager registry key to run executable early in system boot.

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Drops startup file

    • 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.

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • UPX packed file

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

    • Windows security modification

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

    • 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.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks