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Rewterz Threat Advisory – CVE-2021-26084 – Atlassian Confluence Server and Center Vulnerability Exploited in the Wild
June 9, 2022
Rewterz Threat Alert – Emotet – Active IOCs
June 9, 2022

Rewterz Threat Alert – Vidar Malware – Active IOCs

June 9, 2022

Severity

High

Analysis Summary

Vidar, which first appeared in late 2018, is a malware family that primarily acts as an information stealer and is frequently seen as a prelude to ransomware distribution. This malware takes data and distributes it as spam email, cracked commercial software, and keygen programs. Vidar can scrape a wide range of digital wallets in addition to credit card data and passwords. Various campaigns can be used to propagate this malware. It allows data such as system information, browser data, and passwords to be captured and exfiltrated from a system. Vidar has also been seen as a secondary payload in ransomware attacks like STOP/DJVU.

Researchers discovered newly registered domains created by a threat actor to spoof Microsoft’s official Windows 11 OS download portal in April 2022. The fake sites were set up to spread malicious ISO files that infect endpoints with the Vidar infostealer. These Vidar malware variants fetch their C2 configuration via attacker-controlled Telegram and Mastodon social media channels.

Impact

  • Data Exfiltration
  • Information Theft
  • Exposure of Sensitive Data

Indicators of Compromise

MD5

  • c710829aa3d308bb7639a30412c069e9
  • 0228a106cb350d47ab75a992dbe9bc9b
  • 2915b3f8b703eb744fc54c81f4a9c67f
  • 72fa05be3392be5638758ee698836ffb
  • 26ed698da25b4644a62ca4b33513395c

SHA-256

  • aa5505196a233d0a122a07ff0d3df00962a48d55ef94c79155ff5017ef33d785
  • 844d51dcf1dca54944fe6eda67ca3782bca9bc718c62ad922d0a241b4dff5143
  • 9f1f11a708d393e0a4109ae189bc64f1f3e312653dcf317a2bd406f18ffcc507
  • 27cd376e2cadfbc6a07f01b0168e20ba22ea6d181d510c7316b758f85c72442a
  • 93b0ea64ed8a6c613b656b8835e34f54b12a971e27a257e2c9afbf9eeb62b8f9

SHA-1

  • 24bc74cd20fe974d0353db24c6d1f03bfef652dd
  • 7fba6f2efaa8be84835c773fcf831abf49fbc410
  • e10361a11f8a7f232ac3cb2125c1875a0a69a3e4
  • e7e9a38bba03ba858083eea322271016afeee1dd
  • 0b36728a48fbff17a45be400c628052e6dca95fc

Remediation

  • Block all the threat indicators at your respective controls.
  • Search for IOCs in your environment.
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      • Compromise Assessment
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    •     SIEM Gap Analysis
    •     SIEM Optimization
    •     SOC Content Pack
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    • Tabletop Exercise
    • Simulated Cyber Attack Exercises
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      • Hybrid SOC
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      • Managed Penetration Testing
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