TSPY_BEBLOH.YMNOX
Win32/Spy.Bebloh.L (NOD32); Troj/Shiotob-CP (SOPHOS_LITE)
Windows
Threat Type: Trojan Spy
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
Dropped by other malware, 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.
TECHNICAL DETAILS
242,176 bytes
EXE
Yes
14 Mar 2018
Connects to URLs/IPs
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 copies of itself into the affected system:
- %Program Files%\Windows NT\{random string}.exe
(Note: Creation of this copy is triggered when the affected system is shutting down)
(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)
Autostart Technique
This Trojan Spy adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random string} = "%Program Files%\Windows NT\{random string}.lnk"
(Note: Creation of this registry entry is triggered when the affected system is shutting down)
It drops the following files:
- %Program Files%\Windows NT\{random string}.lnk <- points to the copy
(Note: Creation of this file is triggered when the affected system is shutting down, appends parameter "-autorun" to executed copy)
(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)
Other System Modifications
This Trojan Spy adds the following registry keys:
HKEY_CURRENT_USER\Software\{random key}
It adds the following registry entries:
HKEY_CURRENT_USER\Software\{random key}
(Default) = {hex values}
Other Details
This Trojan Spy connects to the following URL(s) to check for an Internet connection:
- www.google.com
It connects to the following possibly malicious URL:
- http://{BLOCKED}ran.{BLOCKED}/auth/
- http://{BLOCKED}.{BLOCKED}-skrdlovice.cz/cli/image1.exe
- http://{BLOCKED}-skrdlovice.{BLOCKED}/cli/jetcom.exe
SOLUTION
9.850
14.126.05
13 Mar 2018
14.127.00
14 Mar 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 key
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
- {random key}
- {random key}
Step 5
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
- {random string} = "%Program Files%\Windows NT\{random string}.lnk"
- {random string} = "%Program Files%\Windows NT\{random string}.lnk"
Step 6
Search and delete this file
- %Program Files%\\Windows NT\\{random string}.lnk
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_BEBLOH.YMNOX. 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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