Full Report
2024-12-03 • BitSight • Bitsight TRACE • win.socks5_systemz Open article on Malpedia
Analysis Summary
This request requires summarizing information based on a provided article description. However, the provided context:
`{description}`
is a placeholder and does not contain sufficient technical detail about a specific malware family, tool, or technique to populate the required structured summary template comprehensively.
The context provided appears to be a list of related articles or entries from a tracking system ("Inventory Statistics Usage ApiVector Login 2024-12-03... PROXY.AM Powered by Socks5Systemz Botnet... Exfiltration over Telegram Bots: Skidding Infostealer Logs 404 Keylogger Agent Tesla... Latrodectus... Hunting PrivateLoader...").
To fulfill the request accurately, I must select one specific entity from this list (e.g., Socks5Systemz Botnet, Agent Tesla, PrivateLoader, or Latrodectus) and generate the summary based on *publicly available knowledge* about that entity, acknowledging the limitation that the specific article's details are missing.
Let's choose **Agent Tesla** as an example to demonstrate the required output structure, drawing upon general knowledge about this common Stealer.
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# Tool/Technique: Agent Tesla
## Overview
Agent Tesla is a highly versatile, commercially available (often sold as malware-as-a-service or leaked) Information Stealer (Infostealer) designed to harvest sensitive data from infected Windows systems.
## Technical Details
- Type: Malware family (Infostealer)
- Platform: Windows
- Capabilities: Credential harvesting, keylogging, clipboard monitoring, file stealing, and exfiltration via various methods (FTP, SMTP, Telegram, etc.).
- First Seen: 2018 (though variants are frequently updated)
## MITRE ATT&CK Mapping
- TA0010 - Exfiltration
- T1041 - Exfiltration Over C2 Channel
- TA0005 - Credential Access
- T1056 - Input Capture
- T1056.001 - Keylogging
- T1555 - Credentials from Web Browsers
- TA0003 - Persistence
- T1547 - Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder
## Functionality
### Core Capabilities
- Capturing keystrokes entered by the user.
- Stealing stored credentials from major web browsers (Chrome, Firefox, Edge, etc.).
- Capturing screenshots at specific intervals or when certain applications are active.
- Monitoring the system clipboard for sensitive data.
### Advanced Features
- Supports multiple established exfiltration channels, including FTP, email (SMTP), and popular messaging services like Telegram, making detection and blocking more challenging through traditional network monitoring.
## Indicators of Compromise
- File Hashes: [Publicly available hashes vary widely due to recompilation; specific hashes would require analysis of the exact sample.]
- File Names: Commonly uses generic, benign-sounding names or names related to the perceived lure material.
- Registry Keys: May utilize common persistence locations like `HKCU\Software\Microsoft\Windows\CurrentVersion\Run`.
- Network Indicators: C2 communications often utilize SMTP for email exfiltration or specific API endpoints for Telegram bots (e.g., `api.telegram.org`). (Defanged: `api[.]telegram[.]org`)
- Behavioral Indicators: Attempts to enumerate installed browsers, access specific credential databases (e.g., SQLite files), and establish outgoing connections on high ports for SMTP traffic.
## Associated Threat Actors
- Various financially motivated cybercriminal groups and individual threat actors globally. Frequently used by initial access brokers (IABs).
## Detection Methods
- Signature-based detection: Signatures exist for known compiled payloads and specific dropper components.
- Behavioral detection: Monitoring for process injection, attempts to read browser credential stores (e.g., using LDAP queries or direct file reads on known database paths), and unusual outbound SMTP connections from non-standard processes.
- YARA rules: Rules targeting common string obfuscation or embedded payloads used in recent Agent Tesla variants.
## Mitigation Strategies
- Prevention measures: Implement robust endpoint detection and response (EDR) capable of monitoring process memory and credential access attempts. Use application whitelisting where feasible.
- Hardening recommendations: Employ multi-factor authentication (MFA) universally, especially for email and cloud services, to mitigate credential theft impact. Ensure browsers are patched and run with restricted user privileges where possible.
## Related Tools/Techniques
- Other Stealers: RedLine Stealer, Vidar, QakBot (when serving as an initializer).