TrojanSpy.MSIL.NEGASTEAL.RJAHSPL
Other:Malware-gen [Trj] (Avast)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan Spy
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
This Trojan Spy 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
1,359,396 bytes
BAT
Yes
Modifies system registry
Arrival Details
This Trojan Spy 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 Trojan Spy drops the following files:
- %Application Data%\{Malware filename}.bat -> copy of itself
- {Malware Path}\{Malware filename}.bat.exe -> copy of powershell
- %User Temp%\{8 Random characters}.{3 Random characters}.ps1
- %User Temp%\{8 Random characters}.{3 Random characters}.psm1
- %AppDataLocal%\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
It adds the following processes:
- cmd.exe reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce /f /v {Malware filename} /d "%Application Data%\{Malware Name}.bat"
- cmd.exe attrib +s +h {Malware filename}.bat.exe
- cmd.exe {Malware filename}.bat.exe -wIn 1 -enC {Base64 Encoded Powershell}
- {Malware Path}\{Malware filename}.bat.exe "%System%\WindowsPowerShell\v1.0\powershell.exe" -ENC {Base64 Encoded Powershell}
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Other System Modifications
This Trojan Spy deletes the following files:
- %User Temp%\{8 Random characters}.{3 Random characters}.ps1
- %User Temp%\{8 Random characters}.{3 Random characters}.psm1
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Other Details
Based on analysis of the codes, it has the following capabilities:
- It adds the following folders:
- %Application Data%\eubJfun
- It adds the following registry entries for automatic execution every system startup:
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run eubJfun = %Application Data%\eubJfun\eubJfun.exe
- Steal the following information:
- Time
- Username
- Computername
- OS Version
- CPU Architecture
- IP Address
- RAM
- Browsers Credentials:
- Opera
- Yandex
- Iriduim
- Chromium
- 7Star
- Torch
- Cool Novo
- Chrome Plus
- Kometa
- Amigo
- Brave
- CentBrowser
- Chedot
- Orbitum
- Sputnik
- Comodo Dragon
- Vivaldi
- Citrio
- Chrome
- Uran
- Liebao
- Elements Browser
- Epic Privacy
- Coccoc
- Sleipnir
- QIP Surf
- Coowon
- Edge Chromium
- Edge
- Firefox
- SeaMonkey
- BlackHawk
- Cyberfox
- K-Meleon
- IceCat
- PaleMoon
- IceDragon
- Waterfox
- Flock
- Internet Explorer
- UC Browser
- Safari for Windows
- QQ Browser
- Falkon
- Email Clients:
- Thundebird
- Postbox
- Outlook
- Windows Mail App
- The Bat!
- Becky!
- IncrediMail
- Eudora
- Claws Mail
- Foxmail
- Opera Mail
- Pocomail
- eM client
- Mailbird
- FTPs:
- FileZilla
- WinSCP
- CoreFTP
- FlashFXP
- FTP Navigator
- SmartFTP
- WS_FTP
- FTP Commander
- FTP Commander Deluxe
- FTP Getter
- VPNs:
- OpenVPN
- NordVPN
- Private Internet Access
- Instant Messaging Applications
- Discord
- Trillian
- Psi/Psi+
- VNCs:
- RealVNC
- TightVNC
- TigerVNC
- UltraVNC
- Others:
- MySQL Workbench
- Internet Download Manager
- Jdownloader
- Credentials from the following vaults:
- Windows Secure Note
- Windows Web Password Credentials
- Windows Credential Picker Protector
- Web Credentials
- Windows Credentials
- Windows Domain Certificate Credential
- Windows Domain Password Credential
- Windows Extended Credential
- Send Stolen information to the following URL:
- https://api.telegram.org/{BLOCKED}3632223:AAG5KHZDs7KWoaqTYx3lSyFlOdfD9vGegQo/sendDocument?chat_id={ChatID}
- Connect to the following URL to retrieve affected system's IP address:
- https://{BLOCKED}i.{BLOCKED}y.org
SOLUTION
9.800
18.418.05
01 May 2023
18.419.00
02 May 2023
Step 1
Restart in Safe Mode
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
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\RunOnce
- {Malware Filename} = %Application Data%\{Malware Filename}.bat
- {Malware Filename} = %Application Data%\{Malware Filename}.bat
Step 5
Search and delete this file
- %Application Data%\{Malware filename}.bat
- %AppDataLocal%\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Step 6
Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.MSIL.NEGASTEAL.RJAHSPL. 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:
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TrojanSpy.MSIL.NEGASTEAL.RJAHSPL. 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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