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Rewterz Threat Alert – Tofsee Malware Resurfaces with Fresh IoCs

Severity

Medium

Analysis Summary

Tofsee malware has been around since 2016. It is used for sending spam messages, conducting click fraud, mining crypto-currency etc. When executed, the malware is capable of making changes to the settings on affected systems and exfiltrating information. It can track users online activities, steal personal information and credentials, and changing browser and DNS settings. Tofsee can be distributed via email as attachments or by bundling it with other programs.
Indicators of compromise are given below.

Impact

  • Information theft
  • Credential theft
  • Crypto-mining

Indicators of Compromise

Malware Hash (MD5/SHA1/SH256)

  • f3c57401b184dca3b93b0922fc09e77a
  • de94cf46b08aacfaef918efddcf2c48a
  • b91c979352ce4514654c25c11824187b
  • b9e6454a3057834d0c7141fe14593494
  • 18751e887e193bc99a7f62f105a665ad
  • d86b2f98d80e7671bae99dbe1fbb1433
  • df8944b9de98eaa3f7c06d398218e825
  • 1b7d0705c538927c8b76f638c288013e
  • ea464aad5955b6aa1dfe458679f5d9ab
  • 6d1233453b64a7496bdfeaa52219e25b
  • 6103b79e3ae60564d3a3e0a3f6d5b270
  • 313a4b27e4543ed43dcd570ec17c0232
  • 70ab33bcd971dbef50fd6a76b5271f40
  • 26a7708585dc7086162c128a0b712239
  • 4d9c87f4729d67443cdf2d1f13d36733

Remediation

  • Block the threat indicators at your respective controls.
  • Always scan downloaded files before executing them.
  • Do not download email attachments coming from untrusted sources.
  • Keep all software updated to the latest patched versions.

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