Extracted

• • Target
    4e68a8a5c1e5515bfe503faf17c4569d28f7e7848fb1c3543a8ea47b99d98712
  • Size 3.9MB
  • SHA256 4e68a8a5c1e5515bfe503faf17c4569d28f7e7848fb1c3543a8ea47b99d98712
  • MD5 84b4f5e8bd578488c4167e805a6f0f85
  • SHA1 fbf619af3fea5f290ab310d26dcb7ca132b5e7f5
  • SHA512 f0e6173bab7451431b449bb084584cb2361e28e2c0ff85ab7d774450f1a3071ce6302e54c720af5bc7fb620eab0d3c1b3b34be57c540deffb84f469fa9f3c013
  • SSDEEP 98304:7PT5rGz6u3uBi2h6kyFDof3lr1x30PNYlEJAoiXAd+1k:NKZe1SFDof3P+PO2AoiQ8k
  • TLSH
    T1EC163302F68995B2DA311876527DB720243D7E205A30CED7A3E45F1FCA781C07A7AB5B
  • MD5 SHA1 SHA512 SSDEEP TLSH

  Score

  10^/10

  backdoorbootkitdefense_evasiondiscoveryexecutiondonutloadervalleyrat_s2loaderpersistencetrojan

  • Detects DonutLoader

    loader

  • Detects ValleyRAT payload

  • Family: DonutLoader

    DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

    loaderdonutloader

  • Family: ValleyRat

    ValleyRat stage2 is a backdoor written in C++.

    backdoorvalleyrat_s2

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

    defense_evasion

  • Checks BIOS information in registry

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

  • Checks computer location settings

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE

  • Adds Run key to start application

    persistence

  • Checks whether UAC is enabled

    defense_evasiontrojan

  • Enumerates connected drives

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

  • Writes to the Master Boot Record (MBR)

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

    bootkitpersistence

  • Suspicious use of NtSetInformationThreadHideFromDebugger

    defense_evasion
  behavioral1behavioral2