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Rewterz Threat Alert – GuLoader Malspam Campaign – Active IOCs

October 5, 2021
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Rewterz Threat Alert – CryptBot Trojan – Active IOCs

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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

MD5

  • fdea7ed0f17f66f950af4e7d66b14801
  • 59001f3bbce8718527348e9097fe9015
  • fe04506591094b6fa136ff4ccfcbccf6
  • ffd7c817323ded9ab17c4e020fbc8d98

SHA-256

  • 4a36589cc22144aa35b63daa5b0557f743f75fb0d3d16d81f47a8f6ebf252ebc
  • 6fc2ea0c312d9f45085083867d13a2311ffa14e53b9562728764b11023fcf726
  • 8c7b2a9de0c292079954b1a378f65f5bfd81c5fda14304c4dac51271f7af50a5
  • 63f1f675dfba6996628ec3e6ed448f753786013fa4e626fbbf75128d0adee6f2

SHA-1

  • 100593a46878f7c25d91e97115e0be6b0c1ff3c7
  • b48d0690f9f5ef380d488f4d3d9164f9befb6bce
  • dd603213fc9fb06811897bf8f331abafdfa5c9dd
  • ac21d64b6cb3d0ba316db73b7e521c629f60fdec

Remediation

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

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