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

• 55ce7bedbb562c58727b47abef769f27
• cff2799137f6dbfa54d7e8d6c45ab395
• 79f867b1b9a9b5b64b7fd471c63ccdd6
• a20c37f0c60ef053496b556da096cea7
• 642b210cce1c89ac83f1f9ba777f49a1

SHA-256

• 197e3f3db38b7f1107617a67e3a6e048133a8daef8d60a2599054d48b5da5815
• edbc89cb962e4fea5c8bf9946c841e68340a51c5a22afa07a8df9df4cca81d65
• 881f1c6cf0c2766e79cc77af44d8286e3816ed130d2595ca83e6114f0f1e7348
• 15644a32b535b90d5c20f99508b35644911e19d138586ef36d625a32413bdc91
• 0d8d30ee7f056dfc450a881e589f4e964c0c956c77f3fb4d96eaf0ad8d89353e

SHA-1

• d2625eca492c2b43189febfb16c1ecbda5be6fda
• ee58b60a36e5152de027bb5d00e85c5b8b613a8b
• 83c1c343245518432ba561f72d65d52e9f607fbf
• f1190e42f369e1f83a12c1a2f88de2c094fe947f
• bd5b60a4ff9443b6551028d939a60085942f8907

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.