30
30
60
60
New Python-Based Payload MechaFlounder Used by Chafer
Unit 42 identified MechaFlounder, a new Python backdoor used by the Chafer group to target a Turkish government entity via HTTP-based C2.
Unit 42 reports that in November 2018 the Chafer group targeted a Turkish government entity, reusing the win10-update[.]com infrastructure reported earlier in 2018 by ClearSky. The new secondary payload, tracked as MechaFlounder, is Python compiled with PyInstaller and acts as a backdoor supporting file upload/download and command execution. It beacons over HTTP using anomalous GET requests containing the username and hostname, suggesting a custom C2 server rather than a standard web server. Code overlap with OilRig's Clayside VBScript was noted, but Chafer and OilRig remain tracked as separate groups.
44
42
47
55
42
42
42
30
45
30
57
42
30
45
35
42
55
42
Ongoing exploitation of Cisco Catalyst SD
60
55
42
42
57
60
42
42
42
30
35
57
42
42
30
35
30
30