Trojan.SteamStealer.FB
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Threat Level: | 80 % (High) |
| Infected Computers: | 1 |
| First Seen: | May 31, 2023 |
| Last Seen: | August 27, 2023 |
| OS(es) Affected: | Windows |
Trojan.SteamStealer.FB is a variant within the broader SteamStealer malware family — a category of information-stealing trojans designed specifically to compromise Valve's Steam gaming platform accounts. Like other members of this family, the .FB variant focuses on harvesting login credentials, session data, and valuable in-game inventory items for resale on secondary markets, rather than pursuing broader system compromise.
Table of Contents
Infection Vectors
SteamStealer-family trojans, including this variant, typically rely on social engineering rather than exploit-based delivery:
Malicious browser extensions masquerading as trade-value calculators or inventory trackers
Fake trade/gift offers sent via Steam chat or third-party messaging apps, linking to a "skin viewer," "inventory checker," or screenshot-hosting page that actually delivers the payload
Bundled with cracked games, cheats, or trainers distributed through torrent sites and unofficial forums
Fake Steam support or VAC-ban appeal pages that prompt victims to download a "verification tool"
Risk and Impact
While scoped narrowly to gaming credentials, the financial impact can be significant given the real-world resale value of rare in-game items and account inventories. Compromised Steam credentials are also frequently reused across other services, so victims face secondary risk of credential-stuffing attacks against email, other game platforms, or financial accounts if password reuse is present.
Analysis Report
General information
| Family Name: | Trojan.SteamStealer.FB |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
0c6aa6e581a95b6d0f38caf3af9d1c92
SHA1:
2a5c0b53c6f4fc9d13bf45f6006959531fb49846
SHA256:
67ECD9593B8A28BDD60E41F9BB55A8B97E46CB8A454A31F7F71383538F51EDE0
File Size:
3.22 MB, 3224064 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have relocations information
- File doesn't have security information
- File has exports table
- File has TLS information
- File is 32-bit executable
- File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI application
- File is Native application (NOT .NET application)
- File is not packed
Show More
- IMAGE_FILE_DLL is not set inside PE header (Executable)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Icons
File Icons
This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.
Windows PE Version Information
Windows PE Version Information
This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.| Name | Value |
|---|---|
| Company Name | Valve Corporation |
| File Description | Steam Client Service |
| File Version | 1, 0, 0, 1 |
| Internal Name | Steam Client Service |
| Legal Copyright | Copyright (C) Valve Corporation |
| Original Filename | SteamService.exe |
| Product Name | Steam Client Service |
| Product Version | 1, 0, 0, 1 |
| Source Control I D | 8908832 |
File Traits
- 2+ executable sections
- GetConsoleWindow
- HighEntropy
- x86
Block Information
Block Information
During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.| Total Blocks: | 2,487 |
|---|---|
| Potentially Malicious Blocks: | 3 |
| Whitelisted Blocks: | 2,442 |
| Unknown Blocks: | 42 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
Files Modified
Files Modified
This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.| File | Attributes |
|---|---|
| c:\users\user\downloads\service_log.txt | Generic Read,Write Data,Write Attributes,Write extended,Append data |
Windows API Usage
Windows API Usage
This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.| Category | API |
|---|---|
| Anti Debug |
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