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Rewterz Threat Alert – GuLoader Malspam Campaign – Active IOCs
April 5, 2022
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Rewterz Threat Alert – Agent Tesla Malware – Active 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.

Impact

  • Credential Theft
  • Data Exfiltration
  • Information Disclosure

Indicators of Compromise

Filename

  • UnsafeValueTypeAttrib[.]exe

MD5

  • cfa330517bfbf442018f686a56d60c46
  • 536bb388ea5e223722a39edea86cefea

SHA-256

  • 6e3187bb101c291c77365027d780116692f596b898f2125388a444a4e2c0dc87
  • 1642dbad825ea6a90e1c6deae6acfcd16af39828c288fddf3b8dd7300dfc6c11

SHA-1

  • 816fb643d8ebeccd878e0d15f07397d0920e8670
  • b987fd2871dd2f8e98025722d187490d9b0d1b4e

URL

  • https[:]//api[.]telegram[.]org/bot2124462934[:]AAGr-L06waDdFGpnKJz3_DCOFcJpWDQ7WIM/sendDocument

Remediation

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