TSPY_HESBOT.A
Win32/Spy.Hesperbot.A trojan (NOD32)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Spyware
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It retrieves specific information from the affected system.
TECHNICAL DETAILS
263,168 bytes
EXE
Yes
06 Sep 2013
Compromises system security
Arrival Details
This spyware 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 spyware drops the following copies of itself into the affected system:
- %Windows%\{random folder name}\(random filename).exe
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
It creates the following folders:
- %All Users Profile%\Application Data\{random folder name}
- %All Users Profile%\Application Data\Sun
(Note: %All Users Profile% is the All Users or Common profile folder, which is C:\Documents and Settings\All Users in Windows 2000, XP, and Server 2003, and C:\ProgramData in Windows Vista and 7.)
It adds the following mutexes to ensure that only one of its copies runs at any one time:
- Global\{random}.mutex
It stays memory-resident by creating remote threads:
- explorer.exe
Autostart Technique
This spyware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
{random = "%Windows%\{random folder name}\(random filename).exe"
Dropping Routine
This spyware drops the following files:
- %All Users Profile%\Application Data\{random folder name 1}\{random filename1}.dat
- %All Users Profile%\Application Data\{random folder name 1}\{random filename2}.dat
- %All Users Profile%\Application Data\Sun\{random filename3}.bkp
- %All Users Profile%\Application Data\Sun\{random filename4}.bkp
(Note: %All Users Profile% is the All Users or Common profile folder, which is C:\Documents and Settings\All Users in Windows 2000, XP, and Server 2003, and C:\ProgramData in Windows Vista and 7.)
Information Theft
This spyware retrieves the following information from the affected system:
- Computer Name
- OS Version
- System Information (Processor type and architecture)
NOTES:
This spyware has the capability to do any of the following:
- Download Configuration File
- Download Component Malwares
- Download updated copy of itself
It connects to the following URL to send and receive information:
- {BLOCKED}whoisrecord.co.uk
As of this writing, the said servers are currently inaccessible.
It retrieves machine GUID and digital product ID by querying the following registries:
quote>HKEY_LOCAL_MACHINE\Software\Microsoft\Cryptography
MachineGuid
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion
DigitalProductId
SOLUTION
9.300
10.260.05
06 Sep 2013
10.261.00
06 Sep 2013
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
Restart in Safe Mode
Step 3
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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- {random} "%Windows%\{random folder name}\(random filename).exe"
- {random} "%Windows%\{random folder name}\(random filename).exe"
Step 4
Search and delete these folders
- %All Users Profile%\Application Data\{random folder name}
- %All Users Profile%\Application Data\Sun
Step 5
Scan your computer with your Trend Micro product to delete files detected as TSPY_HESBOT.A. 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 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_HESBOT.A. 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.
Did this description help? Tell us how we did.