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June 17, 2021
Rewterz Threat Advisory – Multiple AnyConnect Secure Mobility Client Vulnerabilities
June 17, 2021
Severity
High
Analysis Summary
New fourth version of the DanaBot banking trojan has surfaced after months of inactivity. This most recent variant comes packed mostly with the same deadly arsenal of tools that have come before. Main features include a ToR component to anonymize communications between the bad-guys and an infected hardware. As previously reported in DanaBot control panel, DanaBot is set up as a ‘malware as a service’ in which one threat actor controls a global command and control (C&C) panel and infrastructure then sells access to other threat actors known as affiliates,”.
DanaBot’s multi-stage infection chain starts with a dropper that triggers a cascading evolution of hacks. These include stealing network requests, siphoning off application and service credentials, data exfiltration of sensitive information, ransomware infection, desktop screenshot spying and the dropping of a cryptominer to turn targeted PCs into cryptocurrency worker bees. At least one of the DanaBot distribution methods is identified as misuse of various software warez and cracks websites that supposedly offer software keys and cracks for a free download, including anti-virus programs, VPNs, graphics editors, document editors, and games. However, the files distributed by these sites are a bundle of several different malware, including DanaBot. Earlier Campaign also distributed Danabot with new features.
Impact
- Data Exfiltration
- Information Theft
- Credential Theft
Indicators of Compromise
MD5
- d550e6b64c0ba0ed0df7033ee6c0a1ac
- f2500277d48a723d189bc7b865382570
SHA-256
- c4166c09672891ae529fcb8cedf8d5ed4f80157e428be4aa808f8b10e741707a
- 9337eb28690837d507aadecb6513ee6c83ab2484232b2f2450dc6a9d057522aa
SHA-1
- b88b85a22970e3c693731822f2cc4f8dbc95a424
- 6cc15b458b206d1b495c648e50e07997bde46e33
Remediation
- Block the threat indicators at their respective controls.
- Do not download software and files from unofficial and untrusted sources.
- Search for IOCs in your environment.