Threat Database Trojans Trojan.Downloader.Agent.WBD

Trojan.Downloader.Agent.WBD

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 1
First Seen: June 1, 2026
Last Seen: October 13, 2026
OS(es) Affected: Windows

Trojan.Downloader.Agent.WBD is a malicious program classified as a Trojan downloader, designed to secretly infiltrate Windows computers and bring additional malware onto the system. With a danger level rated 8 out of 10, this threat is considered highly damaging and should be removed as soon as it is detected.

What Trojan.Downloader.Agent.WBD Does

Once it finds its way onto a system, Trojan.Downloader.Agent.WBD installs itself quietly and runs in the background without any visible signs to the user. Its core purpose, as its name suggests, is to act as a downloader — it reaches out and retrieves other malicious files or payloads from remote sources, effectively opening the door for further infections. In some cases, this type of Trojan may also give attackers remote control over the compromised machine, allowing them to execute commands, manipulate files, or monitor activity. Interestingly, samples of this threat have been observed disguising themselves with names and file details resembling legitimate software, such as launcher-type executables, in an attempt to appear trustworthy and avoid raising suspicion.

How It Usually Gets Onto Computers

Like most Trojans in this category, Trojan.Downloader.Agent.WBD typically spreads through deceptive means rather than self-replication. It commonly infiltrates systems by exploiting unpatched software vulnerabilities and security flaws. It is also frequently bundled with software downloaded from unreliable or malicious websites, or delivered as an email attachment from an untrusted sender. These attachments can appear in various disguises, including files with .exe, .pif, .avi, or even .jpg extensions, tricking users into opening them. Because it carries no digital signature, the file lacks the verification markers that legitimate, trusted software usually has.

Risks for the User

The presence of this Trojan on a system poses serious risks. Since it can operate silently and potentially grant attackers remote access, victims may face theft of sensitive data, unauthorized changes to system settings, deletion of files, or installation of additional malware without their knowledge. Because downloaders like this one are primarily a delivery mechanism, the true extent of damage often depends on what secondary threats get pulled onto the machine — these can range from spyware and ransomware to other forms of malicious software.

Signs of Infection

Trojans of this type are built to avoid detection, so visible symptoms may be minimal or absent. Users should nonetheless watch for warning signs typical of this category of malware, such as unexpected slowdowns, unusual network activity, unfamiliar processes running in the background, new or unknown programs appearing on the system, or security tools being disabled without explanation. Any unexplained changes in system behavior should be treated as a potential red flag.

How to Stay Protected

To reduce the risk of infection, users should keep their operating system and all installed software fully updated, since unpatched vulnerabilities are a common entry point for this threat. Avoid downloading software from untrusted or unofficial websites, and never open email attachments from unknown or unexpected senders, regardless of the file extension. Running regular system scans with up-to-date security software, maintaining backups of important data, and exercising caution with unsolicited downloads all help minimize exposure to Trojan.Downloader.Agent.WBD and similar threats.

Analysis Report

General information

Family Name: Trojan.Downloader.Agent.WBD
Signature status: No Signature

Known Samples

MD5: efc5e6c1be3bc3ecfc8bdc4aae81f775
SHA1: 2f462adc760e90437d3df1250dd1d019dbc0c841
SHA256: A667CA16A350480A1AD3663235C41A9D7F5DBF3CE8CF262B52D3942F1CCE5967
File Size: 123.90 KB, 123904 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 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is Native application (NOT .NET application)
  • 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)

Windows PE Version Information

Name Value
Company Name Steam006
File Description x86launcher
File Version 1.8.7.0
Internal Name x64launcher
Legal Copyright Steam006
Original Filename x86launcher.exe
Product Name x86launcher
Product Version 1.8.7.0

File Traits

  • fptable
  • HighEntropy
  • WriteProcessMemory
  • x86

Block Information

Total Blocks: 533
Potentially Malicious Blocks: 1
Whitelisted Blocks: 526
Unknown Blocks: 6

Visual Map

0 ? ? x ? ? ? 0 ? 0 0 2 0 0 0 0 0 1 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 2 0 3 1 1 0 0 1 1 2 0 0 0 0
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

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