RANSOM_GAMEOVER.THGAIAH
Generic.Ransom.WCryG.DADAEB97 (Bitdefender)
Windows
Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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 infects by overwriting certain sections of target files with its code.
It encrypts files with specific file extensions.
TECHNICAL DETAILS
119,296 bytes
EXE
No
19 Jul 2018
Terminates processes, Connects to URLs/IPs, Displays message/message boxes, 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.
Installation
This Ransomware drops the following copies of itself into the affected system:
- {All Available Drives}\{Executed Malware Name}.exe
It creates the following folders:
- %System Root%\ghost
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
Autostart Technique
This Ransomware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
gameover = {Executed Malware Directory}
File Infection
This Ransomware infects the following file types:
- .exe
It infects by overwriting certain sections of target files with its code.
It searches for target files in the following folders:
- %System Root%
- %System Root%\Games
- %System Root%\GoG Games
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
Process Termination
This Ransomware terminates the following processes if found running in the affected system's memory:
- ISafe
- ITMRTSVC
- QOELoader
- cctray
- CAVRID
- capfasem
- VetMsg
- MSASCui
- avp
- SSU
- Ad-Aware
- SpySweeperUI
- capfsem
- CAPPActiveProtection
- ccprovsp
- PPCtlPriv
- cmdagent
- aswUpdSv
- SpySweeper
- bdagent
- livesrv
- CAGlobalLight
- AAWService
- ashServ
- sched
- avguard
- pctsAuxs
- pctsSvc
- avmailc
- AVWEBGRD
- ashMaiSv
- ashMaiSv
- AAWTray
- Mcafeeupdate
- cfp
- pctsTray
- egui
- WEXTRACT
- ccApp
- osCheck
- isPwdSvc
- nod32
- mcmscsvc
- TeaTimer
- noadware5
- persfw
- CAGlobal
- xcommsvr
- ccprovsp
- UmxPol
- UmxFwHlp
- UmxCfg
- UmxAgent
- avgwdsvc
- mcagent
- avgrsx
- avgemc
- VetMsg
- ISafe
- mcshield
- mcproxy
- mcsysmon
- MsMpEng
- avgcc
- mbamservice
- mbamgui
- avgemc
- avgupsvc
- avgamsvr
- explorer
- ashDisp
- SUPERAntiSpyware
- RegFirewall
- HiJackThis
- MPFSrv
- MskSrver
- mcagent
- mcsysmon
- McSACore
- avp
- persfw
- kavtray
- aawservice
- kavfsscs
- ccSetMgr
- SNDSrvc
- SPBBCSvc
- ccEvtMgr
- blackd
- navapsvc
- NPFMntor
- rapapp
- symlcsvc
- NAVAPW32
- BLACKICE
- rtsserv
- blackice
- navapw32
- wextact
- itmrtsvc
- isafe
- cavrid
- avgamsvr
- avgupsvc
- avgemc
- avgcc
- zlclient
- FPAVServer
- fssf
- FProtTray
- nvvsvc
- avgwdsvc
- pctsAuxs
- pctsSvc
- avgrsx
- avgnsx
- pctsTray
- avgcsrvx
- avgemc
- avgtray
- Dwm
- WUDFHost
- MSACUI
- MsMpEng
- MSASCui
- wscntfy
- egui
- smc
- TrayNotify
Other Details
This Ransomware does the following:
- It executes the following command to ping the specified URL with a specific buffer size:
- ping -n 4294967265 -l 65500 {BLOCKED}.{BLOCKED}.204.222:80
- It displays the following ransom note after restarting the system:
- This ransomware is still in development, it is not capable of its intended routine.
Ransomware Routine
This Ransomware encrypts files with the following extensions:
- .3g2
- .3gp
- .asf
- .asx
- .avi
- .flv
- .m2ts
- .mkv
- .mov
- .mp4
- .mpg
- .mpeg
- .rm
- .swf
- .vob
- .wmv
- .docx
- .rar
- .jpg
- .jpeg
- .png
- .tiff
- .zip
- .7z
- .tar
- .gz
- .tar
- .mp3
- .sh
- .c
- .gif
- .txt
- .py
- .pyc
- .jar
- .sql
- .bundle
- .sqlite3
- .html
- .php
- .log
- .pptx
- .xlsx
- .ppt
- .accdb
- .pub
- .js
- .bat
- .vbs
- .jse
- .vbe
- .cs
- .vbproj
- .csproj
- .htm
- .rpa
- .pyo
- .pyd
- .db
- .cpp
- .cmd
- .ocx
- .sln
- .vb
- .sb2
- .asm
- .aes
- .der
- .pfx
- .key
- .crt
- .csr
- .pem
- .odt
- .ott
- .sxw
- .stw
- .uot
- .max
- .ods
- .sxc
- .stc
- .slk
- .odp
- .otp
- .sxd
- .std
- .uop
- .odg
- .xdata
- .otg
- .sxm
- .mml
- .lay
- .lay6
- .asc
- .sqlitedb
- .sql
- .mdp
- .dbf
- .odp
- .frm
- .myd
- .myi
- .ibd
- .mdf
- .lbd
- .suo
- .pas
- .dip
- .dch
- .sch
- .brd
- .wma
- .mid
- .midi
- .djvu
- .svg
- .nef
- .cgm
- .raw
- .vcd
- .iso
- .backup
- .bak
- .tbk
- .PAQ
- .ARC
- .gpg
- .vmx
- .vdmk
- .vdi
- .sldm
- .sldx
- .sti
- .sxi
- .hwp
- .snt
- .ppsx
- .ppsm
- .pps
- .pot
- .pptm
- .xltm
- .xltx
- .xlc
- .xlm
- .xlt
- .xlw
- .xlsb
- .xlsm
- .xls
- .dotx
- .dot
- .docm
- .docb
- .doc
- .onetoc2
- .dwg
- .wks
- .csv
- .vsdx
- .vsd
- .edb
- .eml
- .msg
- .ost
- .pst
- .potm
- .potx
- .ppam
- .wncry
It appends the following extension to the file name of the encrypted files:
- .gameover
SOLUTION
9.850
14.390.02
19 Jul 2018
14.391.00
20 Jul 2018
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
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- gameover = {Executed Malware Directory}
- gameover = {Executed Malware Directory}
Step 5
Search and delete these files
- {All Available Drives}\{Executed Malware Name}.exe
Step 6
Search and delete these folders
- %System Root%\ghost
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as RANSOM_GAMEOVER.THGAIAH. 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
Restore encrypted files from backup.
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