General

  • Target
    Spoofer.exe
  • Size 304KB
  • Sample260811-v8azpafe86
  • SHA256 005c10b8feced149bf19ea0ad5c57db854de3339cffb47a905ebb88f4c392eba
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • sheetrat

Version
  • 2.6

Campaign
  • Sheet_rjknnhelcnb

C2
  • tcp.cloudpub.ru:20597

Targets

    • Target
      Spoofer.exe
    • Size 304KB
    • SHA256 005c10b8feced149bf19ea0ad5c57db854de3339cffb47a905ebb88f4c392eba
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects Sheetrat obfuscated V1.8 and higher

      Sheetrat aka NonEuclid RAT is a trojan written in C#.

    • Detects Sheetrat obfuscated version

    • Family: Sheetrat, NonEuclid rat

      Sheetrat aka NonEuclid RAT is a trojan written in C#.

    • Modifies WinLogon for persistence

    • 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

    • Event Triggered Execution: AppInit DLLs

      Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

    • Checks computer location settings

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

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • 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.

    • Command and Scripting Interpreter: PowerShell

      Start PowerShell.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v16

Tasks