✕

Rewterz Annual Threat Intelligence Report 2025 - Download Now

Request a Demo
Rewterz

Rewterz Threat Alert – Standard Chartered Themed Phishing Email

April 25, 2019
Rewterz

Rewterz Threat Advisory – Oracle WebLogic Zero-day Vulnerability

April 26, 2019

Rewterz Threat Alert – DNSpionage Threat Actors Resurface With “Karkoff” Malware

Severity

Medium

Analysis Summary


The DNSpionage malware campaign has resurfaced with a new sophisticated operation that infects selected victims with a new variant of the DNSpionage malware.

The DNSpionage attacks use compromised sites and craft malicious documents to infect victims’ computers with DNSpionage—a custom remote administrative tool that uses HTTP and DNS communication to communicate with the attacker-controlled command and control server.

With the release of Karkoff, the threat actors are more focused on evading detection and are primarily focused on targeting victims in the Middle East region.

Indicators of Compromise

URLs

  • coldfart[.]com
  • rimrun[.]com
  • kuternull[.]com

Malware Hash (MD5/SHA1/SH256)

  • 5b102bf4d997688268bab45336cead7cdf188eb0d6355764e53b4f62e1cdf30c
  • 6a251ed6a2c6a0a2be11f2a945ec68c814d27e2b6ef445f4b2c7a779620baa11
  • b017b9fc2484ce0a5629ff1fed15bca9f62f942eafbb74da6a40f40337187b04
  • cd4b9d0f2d1c0468750855f0ed352c1ed6d4f512d66e0e44ce308688235295b5
  • e398dac59f604d42362ffe8a2947d4351a652516ebfb25ddf0838dd2c8523be8

Remediation

Block the threat indicators at their respective controls.

Reading this advisory was a good start.

Make it a habit.

Rewterz publishes threat advisories ahead of mainstream cybersecurity media, informed by an AI-Native Autonomous SOC that sees regional threat actor activity in real time. Subscribe to receive each new advisory as it publishes, plus a monthly Middle East threat landscape brief drawn from our own SOC telemetry. For teams evaluating their detection coverage, a 30-minute consultation with a senior analyst is also available, at your pace, when you're ready.

Request a demo