Concrete signature match: Trojan - Appears legitimate but performs malicious actions for 64-bit Windows platform, family Donut
This is a concrete detection of a Win64 Donut family Trojan. It leverages various Windows system binaries (e.g., PowerShell, mshta, rundll32, schtasks, BITS) and techniques like process hooking for execution, persistence, and defense evasion, communicating with a command-and-control server at 141.98.6.14.
Relevant strings associated with this threat: - SM_LASTSM_x64.exe (PEHSTR_EXT) - Y+;+.+:P+: (PEHSTR_EXT) - 141.98.6.14:5563/ (PEHSTR_EXT) - .exe (PEHSTR_EXT) - executePowerShell (PEHSTR_EXT) - schtasks /create /tn (PEHSTR_EXT) - djkggosj.bat (PEHSTR_EXT) - !#HSTR:StringCodeForMshta.A!pli (PEHSTR_EXT) - !#HSTR:StringCodeForHooking.C!pli (PEHSTR_EXT) - !#HSTR:StringCodeForHooking.D!pli (PEHSTR_EXT) - !#HSTR:StringCodeForHooking.L!pli (PEHSTR_EXT) - !#HSTR:StringCodeForHooking.O!pli (PEHSTR_EXT) - !#HSTR:StringCodeForRegsvr32.A!pli (PEHSTR_EXT) - !#HSTR:StringCodeForRundll32.A!pli (PEHSTR_EXT) - rundll32 (PEHSTR_EXT) - !#HSTR:StringCodeForBITSJobs.A!pli (PEHSTR_EXT) - !#HSTR:StringCodeForPowerShell.G!pli (PEHSTR_EXT) - !#HSTR:StringCodeForScheduledTask.A!pli (PEHSTR_EXT) - !#HSTR:StringCodeForDataEncoding.D!pli (PEHSTR_EXT) - !#HSTR:StringCodeForHooking.J!pli (PEHSTR_EXT) - !#HSTR:StringCodeForHooking.K!pli (PEHSTR_EXT) - !#HSTR:StringCodeForRemoteFileCopy.B!pli (PEHSTR_EXT) - !#HSTR:ExecutionGuardrails (PEHSTR_EXT) - !#HSTR:StringCodeForFileDeletion.A!pli (PEHSTR_EXT) - !#HSTR:StringCodeForHooking.M!pli (PEHSTR_EXT) - !#HSTR:StringCodeForNetshHelperDLL.A!pli (PEHSTR_EXT) - !#HSTR:StringCodeForRemoteServices.A!pli (PEHSTR_EXT)
be6928a5935f0b49ec86015be3f600a635d3aef55f602827a7104a661b13200a4d90753ef2115ad9c5c646f537c1b10285bed07b4f96813557c2a80013af24d9Immediately isolate the infected system, perform a full antivirus scan, remove identified persistence mechanisms (scheduled tasks), block communication to 141.98.6.14 at the network perimeter, and consider re-imaging the system to ensure complete eradication.