TrojanSpy.MSIL.NEGASTEAL.KDL
HEUR:Trojan.MSIL.Crypt.gen (Kaspersky), Trojan.MSIL.Krypt(Ikarus)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan Spy
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
Downloaded from the Internet
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.
It steals certain information from the system and/or the user. It logs a user's keystrokes to steal information.
TECHNICAL DETAILS
536,064 bytes
EXE
Yes
03 Feb 2020
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.
Other System Modifications
This Trojan Spy modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows Defender\Features
TamperProtection = 0
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender
DisableAntiSpyware = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableBehaviorMonitoring = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableOnAccessProtection = 1
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender\Real-Time Protection
DisableScanOnRealtimeEnable = 1
Information Theft
This Trojan Spy steals the following information:
- IP Address
- Time
- Username
- Computer Name
- OS Name
- Processor Name
- Amouont of Memory
- Screenshot
It logs a user's keystrokes to steal information.
It attempts to steal stored account information used in the following installed File Transfer Protocol (FTP) clients or file manager software:
- FileZilla
- IPSwitch
- WinSCP
- FTP Navigator
- Flash FXP
- Smart FTP
- CFTP
- FTP Getter
- Internet Download Manager
- JDownloader
- Core FTP
It attempts to get stored information such as user names, passwords, and hostnames from the following browsers:
- Chrome
- Firefox
- Safari
- QQ Browser
- SeaMonkey
- Flock
- UC Browser
- BlackHawk
- CyberFox
- KMeleon
- IceCat
- IceDragon
- PaleMoon
- WaterFox
It attempts to steal stored email credentials from the following:
- Outlook
- Thunderbird
- Foxmail
- Opera Mail
- IncrediMail
- Pocomail
- Eudora
- The Bat!
- Postbox
- Claws Mail
- Becky!
Stolen Information
This Trojan Spy sends the data it gathers to the following email addresses via SMTP:
- {BLOCKED}do@montacargasperu.com
Other Details
This Trojan Spy does the following:
- Checks if the malware is being ran under sandbox mode by checking the username if it is one of the following:
- USER
- SANDBOX
- VIRUS
- MALWARE
- SCHMIDTI
- CURRENTUSER
- Also checks the %User Startup% path if it contains one of the following:
- \VIRUS
- SANDBOX
- SAMPLE
- The email uses any of the following strings as it's subject:
- C_{Username}/{Computer Name}
- S_{Username}/{Computer Name}
- K_{Username}/{Computer Name}
- The email body contains the stolen information and may have a jpeg or zip file attached
(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows 2003(32-bit), XP and 2000(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit), 10(64-bit).)
It checks if the following virtual machine or sandbox related module(s) is loaded in the affected system:
- SbieDll.dll
It checks if the following virtual machine- or sandbox-related registry entries are present in the affected system:
HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\
Scsi\Scsi Port 0\Scsi Bus 0\
Target Id 0\Logical Unit Id 0
Identifier = {Registry entry that contains the string "VBOX"}
HKEY_LOCAL_MACHINE\HARDWARE\Description\
System
SystemBiosVersion = {Registry entry that contains the string "VBOX"}
HKEY_LOCAL_MACHINE\HARDWARE\Description\
System
VideoBiosVersion = {Registry entry that contains the string "VIRTUALBOX"}
HKEY_LOCAL_MACHINE\SOFTWARE\Oracle\
VirtualBox Guest Additions
"" = noValueButYesKey
HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\
Scsi\Scsi Port 0\Scsi Bus 0\
Target Id 0\Logical Unit Id 0
Identifier = {Registry entry that contains the string "VMWARE"}
HKEY_LOCAL_MACHINE\SOFTWARE\VMware, Inc.\
VMware Tools
"" = noValueButYesKey
HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\
Scsi\Scsi Port 1\Scsi Bus 0\
Target Id 0\Logical Unit Id 0
Identifier = {Registry entry that contains the string "VMWARE"}
HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\
Scsi\Scsi Port 2\Scsi Bus 0\
Target Id 0\Logical Unit Id 0
Identifier = {Registry entry that contains the string "VMWARE"}
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Disk\Enum
0 = {Registry entry that contains the string "VMWARE"}
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\
0000
DriverDesc = {Registry entry that contains the string "VMWARE"}
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\
0000\Setting
Device Description = {Registry entry that contains the string "VMWARE"}
HKEY_LOCAL_MACHINE\SOFTWARE\VMware, Inc.\
VMware Tools
InstallPath = {Registry entry that contains the string "C:\PROGRAM FILES\VMWARE\VMWARE TOOLS\"}
HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\
Scsi\Scsi Port 0\Scsi Bus 0\
Target Id 0\Logical Unit Id 0
Identifier = {Registry entry that contains the string "QEMU"}
HKEY_LOCAL_MACHINE\HARDWARE\Description\
System
SystemBiosVersion = {Registry entry that contains the string "QEMU"}
It checks for the presence of the following antivirus and security applications:
- ESET NOD32
SOLUTION
9.850
15.670.05
07 Feb 2020
15.671.00
08 Feb 2020
Step 1
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 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
Identify and terminate files detected as TrojanSpy.MSIL.NEGASTEAL.KDL
- 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 4
Restore this modified 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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender\Features
- TamperProtection = 0
- TamperProtection = 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender
- DisableAntiSpyware = 1
- DisableAntiSpyware = 1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection
- DisableBehaviorMonitoring = 1
- DisableBehaviorMonitoring = 1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection
- DisableOnAccessProtection = 1
- DisableOnAccessProtection = 1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection
- DisableScanOnRealtimeEnable = 1
- DisableScanOnRealtimeEnable = 1
Step 5
Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.MSIL.NEGASTEAL.KDL. 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:
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