Extracted

• • Target
    MasonClient.exe
  • Size 1.6MB
  • SHA256 8f3f93c5f53d1b36e8dbc5ad0123f5b89776a79af2cd676fb1595e39187a6e25
  • MD5 a8f1eb5a14d9052fd29d5e1913dd7896
  • SHA1 6254da8932fe030847e365cdc8a8fe9d9dddbf53
  • SHA512 2df036b4dba1533b6c4f6cd0b1e3bb622f3e1ae453761a602e3a7c194c2e06aa8478ecf0d572a74b0ad1e740fba5d91e34b14fe55aea8e9abfd9fcf8656701dc
  • SSDEEP 24576:58/ORRWXhfMV3X2Ua4rUHRc+gZixDBNDUCN3Nszfdlu/WcMuaTgL:S/WWXhK3/UHljtBNDUCN3NwGdMuaTs
  • TLSH
    T197853344376FE4DDD4F8D871B7EF402579E39258F09956EB420C06AABF26943A3342AC
  • MD5 SHA1 SHA512 SSDEEP TLSH

  Score

  10^/10

  bootkitdefense_evasiondiscoveryexecutiondonutloaderneptuneratloaderpersistenceprivilege_escalationtrojan

  • Detects DonutLoader

    loader

  • Detects NeptuneRAT stealer

  • Family: DonutLoader

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

    loaderdonutloader

  • Family: NeptuneRAT, MasonRAT

    NeptuneRAT aka MasonRAT is a trojan written in C#.

    trojanneptunerat

  • Suspicious use of NtCreateUserProcessOtherParentProcess

    defense_evasionprivilege_escalation

  • Sets service image path in registry

    This determines the executable launched when a service starts. It can be used to establish persistence.

    persistence

  • 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

  • Indicator Removal: Clear Windows Event Logs

    Clear Windows Event Logs to hide the activity of an intrusion.

    defense_evasion

  • Loads dropped DLL

  • 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

  • Drops file in System32 directory

  • Suspicious use of SetThreadContext

  behavioral1