RANSOM_SURERAN.A
Troj/FakeLock-Z(Sophos)
Windows
Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Ransomware 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
161,792 bytes
EXE
No
29 Aug 2017
Displays windows, Displays message/message boxes
Arrival Details
This Ransomware 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 Ransomware drops the following file(s) in the Windows User Startup folder to enable its automatic execution at every system startup:
- %User Startup%\cd445b84-305e-408a-9d66-5dca29257bb2.exe
(Note: %User Startup% is the current user's Startup folder, which is usually C:\Documents and Settings\{user}\Start Menu\Programs\Startup on Windows 2000 and XP, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows Vista, 7, and 8.)
Information Theft
This Ransomware gathers the following data:
- UserName
- Computer Name
- Files(And also state if encryptable, viewable, or unsupported)
Stolen Information
This Ransomware sends the gathered information via HTTP POST to the following URL:
- http://{BLOCKED}kgov.uk/action/?action=files&username={ComputerName}%5C{Username}&computer={ComputerName}
Other Details
This Ransomware does the following:
- Displays the following window:
- After clicking Purchase Key, display the following window:
- After clicking the check button which says Purchase Key display the following window:
- After clicking the close button, deletes self and the dropped copy in startup and exits
NOTES:
This malware does not have the ability to encrypt files.
SOLUTION
9.850
13.626.01
29 Aug 2017
13.627.00
30 Aug 2017
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
Restart in Safe Mode
Step 4
Search and delete these files
- %User Startup%\cd445b84-305e-408a-9d66-5dca29257bb2.exe
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as RANSOM_SURERAN.A. 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 6
Restore encrypted files from backup.
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