Rewterz Threat Alert – Hancitor InfoStealer – Active IOCs
December 2, 2021Rewterz Threat Alert – NJRAT – Active IOCs
December 2, 2021Rewterz Threat Alert – Hancitor InfoStealer – Active IOCs
December 2, 2021Rewterz Threat Alert – NJRAT – Active IOCs
December 2, 2021Severity
Medium
Analysis Summary
GuLoader is currently being distributed via spam email campaigns with archived attachments that contain the malware. The majority of malware downloaded by GuLoader is commodity malware, with AgentTesla, FormBook, and NanoCore being the most predominant. This downloader typically stores its encrypted payloads on Google Drive. It has also downloaded its payloads from Microsoft OneDrive and also from compromised or attacker-controlled websites. By utilizing legitimate file- sharing websites, GuLoader can evade network-based detection, as these services are not generally filtered or inspected in corporate environments. Usually, the downloaded payloads are encrypted with a hard-coded XOR key embedded in the malware, making it difficult for file-sharing service providers to identify the payload as malicious.
Impact
- Information Theft
- Security Bypass
Indicators of Compromise
MD5
- 582a642df36cdac38982e4842f370b44
- 26e034a56f86ed41cb3e869095ec73b7
- e32061da9b34b82e0ab5d0e53caf5a09
- 89a584acaeb2f9e8baf46714eb7d3550
SHA-256
- 361deddf3e436753730dbb20842fbd6d1ef2ec27c56cd9da99e87751c3bbe890
- 60ab75a94e04aa5dfab1a68da060a817e9f5ccb79f8a93d0c3dbfe47cb526b7d
- 7c9aeb4763912be27c0b5cfe843642e4424902dd2eefb1ad2df6092ebf10a468
- 59ae017767f6a56eba79abdad1343cba3643744f4668b320c30fda283abdedf2
SHA-1
- 3dd6d0cecd4cd9414d7df148f7c46548c5709d62
- a74551ce377aadbaae0b31b54b2536daaa832754
- 5aabad649f6c4b826c30bdf8152e6f8d33cb8133
- 263ff0b238d57cfc30492f8801530b9986dcae38
Remediation
- Search for IOCs in your environment.
- Block all the threat indicators at your respective controls.
- Do not download files attached in untrusted emails.
- Do not download files from untrusted sources on the internet