RANSOM_STUPALOISA.A
Mal/MSILRnsm-A(Sophos)
Windows
Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
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.
It encrypts files found in specific folders.
TECHNICAL DETAILS
1,453,056 bytes
EXE
No
14 Jul 2017
Displays windows, Encrypts files
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.
Other Details
This Ransomware does the following:
Displays the following window as ransom note:
- Requires the password CREATEDBYMR403FORBIDDEN to decrypt files
Displays the following window after using the password:
Displays the message box after decryption:
Ransomware Routine
This Ransomware encrypts files found in the following folders:
- D:\
It appends the following extension to the file name of the encrypted files:
- .aloisa
SOLUTION
9.850
13.540.07
18 Jul 2017
13.541.00
19 Jul 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
Scan your computer with your Trend Micro product to delete files detected as RANSOM_STUPALOISA.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 3
Restore encrypted files from backup.
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