INF_BLACKEN.SM
Exploit-CVE2014-4114 (McAfee), Trojan.Inf.BlackEnergy.A (BitDefender), Backdoor.Win32.Fonten.k (Kaspersky)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Dropped by other malware
This Trojan may be dropped by other malware.
It is used to load and execute a file.
TECHNICAL DETAILS
Varies
Other
14 Oct 2014
Modifies files
Arrival Details
This Trojan may be dropped by the following malware:
- TROJ_MDLOAD.PGTY
- TROJ_MDROP.JBR
This malware arrives via the following means:
- It is dropped or downloaded upon leveraging any of the following vulnerabilities:
- CVE-2014-4114
- CVE-2014-6352
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\Microsoft\Windows\
CurrentVersion\RunOnce =
Install = "{malware path}\slide1.gif.exe"
HKEY_LOCAL_MACHINE\Microsoft\Windows\
CurrentVersion\RunOnce
Install = "{malware path}\slide.gif.exe"
Other System Modifications
This Trojan modifies the following file(s):
- renames {malware path}\slide.gif to {malware path}\slide.gif.exe - detected as TROJ_TALERET.DRP
- renames slide1.gif to slide1.gif.exe - detected as BKDR_BLACKEN.A
Other Details
This Trojan is used to load and execute the following file:
- {malware path}\slide.gif.exe - detected as TROJ_TALERET.DRP
- {malware path}\slide1.gif.exe - detected as BKDR_BLACKEN.A
SOLUTION
9.700
11.273.00
12 Nov 2014
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Remove the malware/grayware file that dropped/downloaded INF_BLACKEN.SM. (Note: Please skip this step if the threat(s) listed below have already been removed.)
- TROJ_MDLOAD.PGTY
- TROJ_MDROP.JBR
Step 4
Remove the malware/grayware file dropped/downloaded by INF_BLACKEN.SM. (Note: Please skip this step if the threat(s) listed below have already been removed.)
- TROJ_TALERET.DRP
- BKDR_BLACKEN.A
Step 5
Restart in Safe Mode
Step 6
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\Microsoft\Windows\CurrentVersion\RunOnce
- Install = "{malware path}\slide1.gif.exe"
- Install = "{malware path}\slide1.gif.exe"
- In HKEY_LOCAL_MACHINE\Microsoft\Windows\CurrentVersion\RunOnce
- Install = "{malware path}\slide.gif.exe"
- Install = "{malware path}\slide.gif.exe"
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as INF_BLACKEN.SM. 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 this Knowledge Base page for more information.
Step 8
Download and apply this security patch Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.
- https://technet.microsoft.com/en-us/library/security/MS14-060
- https://technet.microsoft.com/library/security/3010060
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