TROJ_RANSOM.FB
Trojan:Win32/Ransom.CD (Microsoft); PWS-Zbot.gen.ce (McAfee); Packed.Mystic!gen4 (Symantec); Trojan-Ransom.Win32.DigiPog.nj (Kaspersky); VirTool.Win32.Obfuscator.ah!a (v) (Sunbelt); Gen:Variant.Tdss.27 (FSecure)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan 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
100,352 bytes
EXE
Yes
30 Dec 2012
Arrival Details
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
PC Health Status = "%User Profile%\Application Data\qkkkcwhw.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
PC Health Status = "%User Profile%\Application Data\qkkkcwhw.exe"
Dropping Routine
This Trojan drops the following files:
- %User Profile%\Application Data\358593513
- %User Profile%\Application Data\qkkkcwhw.ddr
- %User Profile%\Application Data\qkkkcwhw.exe358596621
- %User Profile%\Application Data\qkkkcwhw.exe
- %User Startup%\healm_vfpf.lnk
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}.49.168/_req/?{random characters}
This report is generated via an automated analysis system.
SOLUTION
9.300
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
Restart in Safe Mode
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\Microsoft\Windows\CurrentVersion\Run
- PC Health Status = "%User Profile%\Application Data\qkkkcwhw.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- PC Health Status = "%User Profile%\Application Data\qkkkcwhw.exe"
Step 4
Search and delete these components
- %User Profile%\Application Data\358593513
- %User Profile%\Application Data\qkkkcwhw.ddr
- %User Profile%\Application Data\qkkkcwhw.exe358596621
- %User Profile%\Application Data\qkkkcwhw.exe
- %User Startup%\healm_vfpf.lnk
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_RANSOM.FB. 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.
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