BKDR_BIFROSE.WINP
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.
It deletes the initially executed copy of itself.
TECHNICAL DETAILS
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.
Installation
This backdoor drops a copy of itself in the following folders using different file names:
- %System%\wminanp.exe
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Other System Modifications
This backdoor adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{UID}
HKEY_CURRENT_USER\Identities
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Active Setup\Installed Components\{UID}
StubPath = "%System%\wminanp.exe -a"
HKEY_CURRENT_USER\Identities
Last Name = "{hex values}"
Other Details
This backdoor connects to the following possibly malicious URL:
- a3release070108.{BLOCKED}ix.com
- wqertbbs.{BLOCKED}n.com
It deletes the initially executed copy of itself