Ransom.Win32.CRYSIS.TIBGGS
Ransom:Win32/Crysis.A(MICROSOFT);TrojanRansom.Crusis(VBA32)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Ransomware
Destructiveness: No
Encrypted:
In the wild:
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
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.
Installation
This Ransomware drops the following files:
- {Malware Directory}\takeaway.ps1 -> detected as Trojan.PS1.CRYSIS.AA
- {Malware Directory}\purgeMemory.ps1 -> detected as Trojan.PS1.KILLSVC.A
- {Malware Directory}\NS2.exe -> detected as HackTool.Win32.NetTool.A
- {Malware Directory}\winhost.exe -> detected as Ransom.Win32.CRYSIS.TIBGGQ
It adds the following processes:
- powershell -ExecutionPolicy Bypass -noLogo -noProfile -File takeaway.ps1 winhost
SOLUTION
Step 1
Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:
- Troj.Win32.TRX.XXPE50FSX002
Step 2
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 3
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 4
Identify and terminate files detected as Ransom.Win32.CRYSIS.TIBGGS
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 5
Search and delete this file
- {Malware Directory}\takeaway.ps1
- {Malware Directory}\purgeMemory.ps1
- {Malware Directory}\NS2.exe
- {Malware Directory}\winhost.exe
Step 6
Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.CRYSIS.TIBGGS. 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 the following Trend Micro Support pages for more information:
Did this description help? Tell us how we did.