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S1240 RedLine Stealer

RedLine Stealer is an information-stealer malware variant first identified in 2020.134 RedLine Stealer is a Malware as a Service (MaaS) and was reportedly sold as either a one-time purchase or a monthly subscription service.15 Information obtained from RedLine Stealer has been known to be sold on the deep and dark web to Initial Access Brokers (IABs), who use or resell the stolen credentials for further intrusions.25

Item Value
ID S1240
Associated Names
Type MALWARE
Version 1.0
Created 17 September 2025
Last Modified 24 October 2025
Navigation Layer View In ATT&CK® Navigator

Techniques Used

Domain ID Name Use
enterprise T1087 Account Discovery -
enterprise T1087.001 Local Account RedLine Stealer has collected account information from the victim’s machine.34
enterprise T1071 Application Layer Protocol -
enterprise T1071.001 Web Protocols RedLine Stealer has utilized HTTP for C2 communications.6 RedLine Stealer has also conducted C2 communications to hardcoded C2 servers over HTTPS.14 RedLine Stealer has leveraged SOAP protocol for C2 communications.3
enterprise T1217 Browser Information Discovery RedLine Stealer can collect information from browsers and browser extensions.4
enterprise T1059 Command and Scripting Interpreter -
enterprise T1059.003 Windows Command Shell RedLine Stealer has executed windows cmd using ErrorHandler.cmd to create scheduled tasks.6
enterprise T1059.011 Lua RedLine Stealer malware has leveraged Lua bytecode to perform malicious behavior.6
enterprise T1555 Credentials from Password Stores RedLine Stealer has obtained credentials from VPN services, FTP clients and Instant Messenger (IM)/Chat clients.234
enterprise T1555.003 Credentials from Web Browsers RedLine Stealer was designed to steal sensitive information from web browsers, including credit card details, saved credentials, and autocomplete data.1 RedLine Stealer can also gather credentials from several browsers.234
enterprise T1132 Data Encoding -
enterprise T1132.001 Standard Encoding RedLine Stealer has used Base64 to encode command and control traffic.6
enterprise T1005 Data from Local System RedLine Stealer has collected data stored locally including chat logs and files associated with chat services such as Steam, Discord, and Telegram.1
enterprise T1140 Deobfuscate/Decode Files or Information RedLine Stealer has decoded its payload prior to execution.4
enterprise T1480 Execution Guardrails RedLine Stealer has built in settings to not operate based on geolocation or country of the victim host.13
enterprise T1041 Exfiltration Over C2 Channel RedLine Stealer has sent victim data to its C2 server or RedLine panel server.3
enterprise T1657 Financial Theft RedLine Stealer has collected data from cryptocurrency wallets and harvested credit cards details from browsers.12345
enterprise T1562 Impair Defenses -
enterprise T1562.001 Disable or Modify Tools RedLine Stealer can disable security software and update services.4
enterprise T1105 Ingress Tool Transfer RedLine Stealer has the ability download additional payloads.25
enterprise T1036 Masquerading RedLine Stealer malware has masqueraded as legitimate software such as “PDF Converter Software” which has been distributed through poisoned search engine results often resembling legitimate software lures with the combination of typo squatted domains.2
enterprise T1027 Obfuscated Files or Information -
enterprise T1027.002 Software Packing RedLine Stealer has used obfuscation tools such as DNGuard and Boxed App to pack their code.1
enterprise T1027.010 Command Obfuscation RedLine Stealer has obfuscated scripts within text files used in execution.6
enterprise T1027.013 Encrypted/Encoded File RedLine Stealer has encrypted and encoded configuration data with Base64 and XOR functions.4
enterprise T1012 Query Registry RedLine Stealer can query the Windows Registry.6
enterprise T1053 Scheduled Task/Job -
enterprise T1053.005 Scheduled Task RedLine Stealer has achieved persistence via scheduled tasks.6
enterprise T1113 Screen Capture RedLine Stealer can capture screenshots on a compromised host.64
enterprise T1518 Software Discovery RedLine Stealer can get a list of programs on the victim device.4
enterprise T1518.001 Security Software Discovery RedLine Stealer has identified installed antivirus software on the system.25
enterprise T1539 Steal Web Session Cookie RedLine Stealer has stolen browser cookies and settings.1234
enterprise T1553 Subvert Trust Controls -
enterprise T1553.002 Code Signing RedLine Stealer has used both valid certificates and self-signed digital certificates to appear legitimate.1
enterprise T1218 System Binary Proxy Execution -
enterprise T1218.007 Msiexec RedLine Stealer has been installed via MSI Installer.6
enterprise T1082 System Information Discovery RedLine Stealer can collect information about the local system.2345
enterprise T1614 System Location Discovery RedLine Stealer has gathered detailed information about victims’ systems, such as IP addresses, and geolocation.123 RedLine Stealer has also checked the IP from where it was being executed and leveraged an opensource geolocation IP-lookup service. 6
enterprise T1614.001 System Language Discovery RedLine Stealer can retrieve system default language and time zone.4
enterprise T1016 System Network Configuration Discovery RedLine Stealer can enumeate information about victims’ systems including IP addresses.2
enterprise T1033 System Owner/User Discovery RedLine Stealer has obtained the username from the victim’s machine.345
enterprise T1204 User Execution -
enterprise T1204.002 Malicious File RedLine Stealer malware has been executed through the download of malicious files.125 RedLine Stealer has also lured users to install malware with an Install Wizard interface.6
enterprise T1497 Virtualization/Sandbox Evasion RedLine Stealer has an anti-sandbox technique that requires the malware to consistently check with the C2 server, if the communication fails RedLine Stealer will not continue execution.4
enterprise T1102 Web Service RedLine Stealer has leveraged legitimate file sharing web services to host malicious payloads.34

References

  1. Alexandre Cote Cyr. (2024, November 8). Life on a crooked RedLine: Analyzing the infamous infostealer’s backend. Retrieved September 17, 2025. ↩↩↩↩↩↩↩↩↩↩↩↩

  2. George Glass. (2024, August 14). REDLINESTEALER Malware Driving the Initial Access Broker Market. Retrieved September 17, 2025. ↩↩↩↩↩↩↩↩↩↩↩↩

  3. Proofpoint Threat Insight Team, Jeremy H, Axel F. (2020, March 16). New Redline Password Stealer Malware. Retrieved September 17, 2025. ↩↩↩↩↩↩↩↩↩↩↩↩↩

  4. Splunk Threat Research Team. (2023, June 1). Do Not Cross The ‘RedLine’ Stealer: Detections and Analysis. Retrieved September 17, 2025. ↩↩↩↩↩↩↩↩↩↩↩↩↩↩↩↩↩↩

  5. Yair Herling. (2023, April 4). From ChatGPT to RedLine Stealer: The Dark Side of OpenAI and Google Bard. Retrieved September 17, 2025. ↩↩↩↩↩↩↩↩

  6. Mohansundaram M, Neil Tyagi. (2024, April 17). Redline Stealer: A Novel Approach. Retrieved September 17, 2025. ↩↩↩↩↩↩↩↩↩↩↩