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

• 8021460702777318a468e62cb10be252
• 3ef4b957cbd8922f5bba0cfc031a6c94
• 908a00fa64599d1f3e40e5926bb77548

SHA-256

• c32e08dd9502c6f42d7c553f1115984d1958c859f428381cff4cc17fbf5b2498
• ff6ef98e1aa7b4db979b96058a05ba107a7938546f66ce5012921a0cf5592259
• 0c480c5b85acca820cc14ca9d9fd55ea5ba106228a44f5ec1123bc796d63a786

SHA-1

• fc90f57d99a60a507d1ac9b40a851c7c9c744f3e
• 50a7f4258f6eb1795c59b3799c70ff240022626a
• 0a9295ab7a2db702c7188e2b7e2574d8db9927b8

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 documents 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.