Rewterz Threat Alert – AgentTesla Information Stealer – Fresh IoCs

Severity

Medium

Analysis Summary

A new AgentTesla campaign is seen targeting victims with malspam. AgentTesla is known for stealing data from different applications on victim machines, such as browsers, FTP clients, and file downloaders. Agent Tesla collects personal information from the victim’s machine, steals data from the victim’s clipboard, can log keystrokes, capture screenshots and access the victim’s webcam. It can kill running analysis processes and AVsoftware. The spyware also performs basic actions to check whether it is running on a virtual machine or in debug mode, in an attempt to hide its capabilities and actions from researchers. All the data it obtains is sent in encrypted form via SMTP protocol. This current Agent Tesla campaign seems to be using email attachments with the common phishing themes of invoice, quotation request, new order, shipping advice, etc. These malicious attachments when downloaded and executed will infect the target system with Agent Tesla.

Impact

• Credential Theft 
• Data Exfiltration 
• Information Disclosure 
• Detection Evasion

Indicators of Compromise

SHA-256

• a8e7364be8ee1d0cd5af946f8539f7f6364936f54233ea18ebee021f73373a78
• 988a03626122f51e9c3c63ffd4639c00fda40c1d5261872e5026e2a375ec61e2
• 4de46d3b4c6b4624a650b03eff54b2c93af94cc168f4869dddbad05f0ed83082
• 527595925cba49d29a946fe1e13ad8651c2c220809714e3882929aa369969ba5

Remediation

• Block all threat indicators at your respective controls.
• Search for IOCs in your environment.