Resubmissions

24/03/2025, 15:44

250324-s6wr9swjv7 10

General

  • Target

    sample

  • Size

    274KB

  • Sample

    250324-s6wr9swjv7

  • MD5

    78ccd84b6783d7c1b1d00c86b6ba46b7

  • SHA1

    967092de87077d1dfa92c4d48646e8d021af5d01

  • SHA256

    eb9d3281b04e2b56de3f1dc9e2e2420ec6b68418f40689b435bbd52322d1face

  • SHA512

    7cc4e0f485f59cdb0f60c5c92692516d3aaef7206a30e77a84dd8bfce3de01443a566586e86207378d47d68c07fb0292f4c86391e2d59dd9518a96724f4da88c

  • SSDEEP

    6144:HmXaaeApOL/saqkPV97HILqgIDSsqIl9yvZJT3CqbMrhryf65NRPaCieMjAkvCJi:IaaeApOL/saqkPV97HILqgIDSsqIl9yt

Malware Config

Targets

    • Target

      sample

    • Size

      274KB

    • MD5

      78ccd84b6783d7c1b1d00c86b6ba46b7

    • SHA1

      967092de87077d1dfa92c4d48646e8d021af5d01

    • SHA256

      eb9d3281b04e2b56de3f1dc9e2e2420ec6b68418f40689b435bbd52322d1face

    • SHA512

      7cc4e0f485f59cdb0f60c5c92692516d3aaef7206a30e77a84dd8bfce3de01443a566586e86207378d47d68c07fb0292f4c86391e2d59dd9518a96724f4da88c

    • SSDEEP

      6144:HmXaaeApOL/saqkPV97HILqgIDSsqIl9yvZJT3CqbMrhryf65NRPaCieMjAkvCJi:IaaeApOL/saqkPV97HILqgIDSsqIl9yt

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

    • Dharma family

    • Modifies WinLogon for persistence

    • Njrat family

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (880) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Event Triggered Execution: Image File Execution Options Injection

    • Modifies RDP port number used by Windows

    • Modifies Windows Firewall

    • Office macro that triggers on suspicious action

      Office document macro which triggers in special circumstances - often malicious.

    • Possible privilege escalation attempt

    • Sets service image path in registry

    • Uses Session Manager for persistence

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

    • 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.

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Deletes itself

    • Drops startup file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

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

    • 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.

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • 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

    • Writes to the Master Boot Record (MBR)

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

    • Boot or Logon Autostart Execution: Authentication Package

      Suspicious Windows Authentication Registry Modification.

    • Checks system information in the registry

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks