Rewterz Threat Alert – SmokeLoader Malware – Active IOCs

Severity

Medium

Analysis Summary

Smoke Loader – a malicious bot application – can be used to load additional malware. Smoke Loader has been spotted in the wild since 2011, carrying a variety of payloads. This malware is mostly used to load additional malicious software, which is often obtained from a third-party source. Smoke Loader can load its modules allowing it to do several activities without the use of additional components. To date, the supplier of Smokeloader, who goes by the alias SmokeLdr, is still active in delivering this malware as a service. It is well-known for using deception and self-defense. This malware can be spread in several ways and is widely linked to criminal activity. To hide its C2 activity, this malware sends queries to popular websites like microsoft.com, bing.com, adobe.com, and others.

Impact

• Information theft
• Unauthorized Access

Indicators of Compromise

MD5

452cfcf5e097044902f68cd48319a210
34fdd28a583fc8bc7d8966da18f5399b
20842eae6f7a98f5e4987a27b05c9c3b

SHA-256

269b8a0363b4f46bc7d6def213a772a3d0a879560b3ff7cd22768c3fc24bc7c6
bd9f56cff4739bdab749e8975b7c34998095a6393992471c6fe5debe89850bc7
982ce844285349ed672a22af69e1122d2093f4498d3d41e2776d8a4f79a0bbb6

SHA-1

141f4fb93af785be564e6f4d43c2ff3989f6ef35
0a51204a215b187b347e735cb856121a4f959143
6cd15b802551cc353fad0b113a2c74d6b3af26cb

Remediation

• Block all threat indicators at your respective controls.
• Search for Indicators of compromise (IOCs) in your environment utilizing your respective security controls
• Do not download document ?les attached in emails from unknown sources and strictly refrain from enabling macros when the source isn’t reliable.
• Enable antivirus and anti-malware software and update signature definitions in a timely manner. Using multi-layered protection is necessary to secure vulnerable assets
• Patch and upgrade any platforms and software timely and make it into a standard security policy.