Backdoor.Win32.OBLIVION.AB
Trojan:Win32/Optixkill.B [non_writable_container] (Microsoft); BackDoor-QY (McAfee); Backdoor.Oblivion (Symantec); Backdoor.Win32.Oblivion.01.d (Kaspersky); Troj/Oblivion-A (Sophos); BehavesLike.Win32.Malware.ssc (mx-v) (Sunbelt)
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
8,020 bytes
EXE
Yes
09 Jan 2020
Arrival Details
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Other System Modifications
This Backdoor adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\RunServices
HKEY_LOCAL_MACHINE\Software\Microsoft\
Active Setup\Installed Components\windrv
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Run
windrv = "%System%\windrv32.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
RunServices
windrv = "%System%\windrv32.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Active Setup\Installed Components\
windrv
StubPath = "%System%\windrv32.exe ASC"
Dropping Routine
This Backdoor drops the following files:
- %System%\windrv32.exe
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Other Details
This Backdoor connects to the following possibly malicious URL:
- http://wwp.{BLOCKED}lis.com
This report is generated via an automated analysis system.
SOLUTION
9.850
Step 1
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 2
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion
- RunServices
- In HKEY_LOCAL_MACHINE\Software\Microsoft\Active Setup\Installed Components
- windrv
Step 3
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run
- windrv = "%System%\windrv32.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunServices
- windrv = "%System%\windrv32.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\windrv
- StubPath = "%System%\windrv32.exe ASC"
Step 4
Search and delete this file
- %System%\windrv32.exe
Step 5
Scan your computer with your Trend Micro product to delete files detected as Backdoor.Win32.OBLIVION.AB. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:
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