Donot Team (also known as APT-C-35 and SectorE02) is a threat actor operating since at least 2016 and known for targeting organizations and individuals in South Asia with Windows and Android malware. A recent report by Amnesty International links the group’s malware to an Indian cybersecurity company that may be selling the spyware or offering a hackers-for-hire service to governments of the region.
We have been closely following the activities of Donot Team, and have traced several campaigns that
In this blogpost, we document two variants of the malware used in recent campaigns – DarkMusical and Gedit. For each of the variants, we analyze the whole attack chain and provide insight into how the group updates its tools, tactics, and techniques.
Going as far as targeting embassies of these countries in other regions, such as the Middle East, Europe, North America, and Latin America, is also not outside Donot Team’s realm.
Try, try, try again
It’s not a rarity for APT operators to attempt to regain access to a compromised network after they have been ejected from it. In some cases this is achieved through the deployment of a stealthier backdoor that remains quiet until the attackers need it; in other cases they simply restart their operation with new malware or a variant of the malware they used previously. The latter is the case with Donot Team operators, only that they are remarkably persistent in their attempts.
According to ESET telemetry, Donot Team has been consistently targeting the same entities with waves of spearphishing emails with malicious attachments every two to four months. Interestingly, emails we were able to retrieve and analyze did not show signs of spoofing. Some emails were sent from the same organizations that were being attacked. It’s possible that the attackers may have compromised the email accounts of some of their victims in earlier campaigns, or the email server used by those organizations.