Introduction
DUMB variant discovered on November 16, 2017. Disguised itself as a popular virtual private network (VPN) in Iran known as Psiphon and infected Iranian users. Included Farsi-language ransom note, decryptable in the same way as previous DUMB-based variants. Message requested only US$15 for unlock key. Advertised two local and Iran-based payment processors: exchange.ir and webmoney.ir.Shared unique and specialized indicators with RASTAKHIZ; iDefense threat intelligence analysts believe this similarity confirms that the same actor was behind the repurposing of both types of ransomware.
Activities and Tactics
Information pending cataloguing.
Notable Campaigns
Information pending cataloguing.
Tactics, Techniques, and Procedures (TTPs)
Information pending cataloguing.
Notable Indicators of Compromise (IOCs)
No curated IOCs are currently published for this actor. This section will be updated when stable, attributable indicators are available.
Malware and Tools
Information pending cataloguing.
Attribution and Evidence
Information pending cataloguing.
References
References pending cataloguing.