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Alex NightWatcher: Solved! (5 / 5)

Backdoor.Koutodoor also known as W32/Koutodoor.F!tr.bdr, Trojan[Backdoor]/Win32.Koutodoor, Gen:Variant.Adload.1.

Malware Analysis of Backdoor.Koutodoor – KJFRBO.DLL

Created files:

%SysDir%\drivers\gvhble.sys
%SysDir%\kjfrbo.dll

Autostart registry keys:

HKLM\System\CurrentControlSet\Services\gvhbl\ImagePath: “system32\drivers\gvhble.sys”
HKLM\System\CurrentControlSet\Services\gvhbl\DisplayName: “gvhbl”

Detected by UnHackMe:

KJFRBO.DLL
Default location: %SYSDIR%\KJFRBO.DLL

Dropper hash(md5): 0325f2ca3f436a93774435d89fa47792

Written by NightWatcher

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