Threat Database Keyloggers Keylogger.SimpleRAT.D

Keylogger.SimpleRAT.D

Keylogger.SimpleRAT.D is a threat identified as belonging to the keylogger category, a type of malicious software designed to secretly monitor and record what a user types or does on an infected computer. Because detailed technical data about this specific threat is not available, this article explains the general behavior typical of keyloggers and remote access tool (RAT) style threats so users can understand the risks associated with this type of infection and how to respond to it.

What This Threat Does

Like other keyloggers, Keylogger.SimpleRAT.D is built to operate quietly in the background of an infected system, capturing keystrokes, clipboard content, screenshots, or other activity without the user's knowledge. The "RAT" portion of its name suggests it may also include remote access capabilities, allowing an attacker to control certain functions of the infected machine from a distance. This combination is common in modern spyware families, where keylogging is paired with remote command features to give attackers broader access to a victim's system and data.

Information gathered by this type of threat is typically sent back to a remote server controlled by cybercriminals. This can include login credentials, banking details, private messages, browsing habits, and other sensitive information typed or stored on the device.

How It Usually Gets Onto Computers

Keyloggers and RAT-based threats like this one commonly spread through methods typical of the broader malware landscape. These include malicious email attachments, deceptive download links, bundled software installers, cracked or pirated program downloads, and fake updates. Users may unknowingly install this type of threat by opening an infected file, clicking a malicious link, or downloading software from untrustworthy sources. Once installed, the program is generally designed to run silently and avoid drawing attention to itself.

Risks for the User

The presence of a keylogger/RAT combination threat poses serious privacy and security risks. Because it can record keystrokes and potentially allow remote control of the machine, sensitive information such as passwords, financial data, and personal communications could be exposed to attackers. This information may later be used for identity theft, unauthorized financial transactions, account takeovers, or further distribution of malware. In some cases, remote access capabilities could also allow an attacker to install additional malicious software or manipulate files on the compromised system.

Signs of Infection

Keyloggers are generally designed to be stealthy, so infections are not always obvious. However, typical warning signs for this category of threat may include unusual system slowdowns, unexpected network activity, programs or processes that the user does not recognize, security tools being disabled unexpectedly, or strange behavior such as the cursor moving or files changing without user interaction. Because these symptoms can vary, the absence of obvious signs does not guarantee a system is clean.

How to Stay Protected

To reduce the risk of infection from threats like Keylogger.SimpleRAT.D, users should avoid downloading software from unofficial or unverified sources, be cautious with email attachments and links from unknown senders, and keep their operating system and applications updated with the latest security patches. Running reputable, up-to-date security software and performing regular system scans can help detect and remove such threats. Practicing strong password hygiene, enabling multi-factor authentication where possible, and staying alert to unusual system behavior can further reduce the potential damage caused by keylogging and remote access threats.

Analysis Report

General information

Family Name: Keylogger.SimpleRAT.D
Signature status: No Signature

Known Samples

MD5: 6e1b099574e1051414cd2dd48a4e2ad6
SHA1: 34e726362bf88a9cda263439d31c9545acc5dfe3
SHA256: 0701F93CD1BA5DD07B43127C77AE56671210F43B02A12A8F6C6DDAF74853E783
File Size: 430.59 KB, 430592 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have security information
  • File is .NET application
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

Windows PE Version Information

Name Value
Assembly Version 1.0.0.0
File Description usb loader host
File Version 1.0.0.0
Internal Name UpgradeFirmware.exe
Legal Copyright Copyright © 2010
Original Filename UpgradeFirmware.exe
Product Name usb loader host
Product Version 1.0.0.0

File Traits

  • .NET
  • HighEntropy
  • x86

Block Information

Total Blocks: 134
Potentially Malicious Blocks: 62
Whitelisted Blocks: 72
Unknown Blocks: 0

Visual Map

x 0 0 x x x x x x x 0 0 0 0 0 0 0 0 x 0 0 0 0 0 0 0 0 x x x x 0 0 x 0 0 0 0 0 0 0 0 0 0 0 0 x 0 0 0 0 x x x x 0 0 x 0 0 0 x 0 x x 0 x x x x x x x x x x x x x x x x x x x x x x x x 0 x 0 0 0 0 x x x x x x x x x 0 x 0 0 x x x x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

  • SimpleRAT.D

Windows API Usage

Category API
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation