This is a common trait in ThreatNeedle loaders. The most common example we’ve seen is similar to the ThreatNeedle installer – the malware decrypts an embedded string using RC4, and compares it with the parameter “Sx6BrUk4v4rqBFBV” upon launch. If it matches, the malware begins decrypting its embedded payload using the same RC4 key. The decrypted payload is an archive file which is subsequently decompressed in the process. Eventually, the ThreatNeedle malware spawns in memory