TROJ_GLOBYY.SLO
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: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It does not have any downloading capability.
It does not have any information-stealing capability.
TECHNICAL DETAILS
46,080 bytes
EXE
No
18 Sep 2013
Drops files
Arrival Details
This Trojan 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 drops the following component file(s):
- %System%\appmgmts32.dll - detected as PTCH_GLOBYY.SLO
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
Other System Modifications
This Trojan adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
{random}\Btr
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
{random}
"AppMgmt" = "AppMgmt"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
{random}
id = "1B6E1C566BSA20F9"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
{random}
ie = "{malware path and file name}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
{random}
it = "{random value}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
{random}\Btr
Run = "{binary data}"
Download Routine
This Trojan does not have any downloading capability.
Information Theft
This Trojan does not have any information-stealing capability.
NOTES:
It registers its dropped component as a system service to ensure its automatic execution at every system startup. It does this by modifying the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AppMgmt
Start = "2"
Start = "3"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AppMgmt
ServiceDll = "%System%\appmgmts32.dll"
ServiceDll = "%System%\appmgmts.dll"
It checks for certain services if running on the system by querying this registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Svchost
netsvcs
The following are the services this malware checks:
- 6to4
- AppMgmt
It also checks for the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AppMgmt
DependOnService
Start
It does not have rootkit capabilities.
It does not exploit any vulnerability.
SOLUTION
9.300
10.304.08
28 Sep 2013
10.305.00
28 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
Remove malware/grayware files dropped/downloaded by TROJ_GLOBYY.SLO
- PTCH_GLOBYY.SLO
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_LOCAL_MACHINE\SOFTWARE\Microsoft\{random}
- Btr
- Btr
Step 5
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AppMgmt
- From: Start = "2"
To: Start = 3
- From: Start = "2"
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AppMgmt
- From: ServiceDll = "%System%\appmgmts32.dll"
To: ServiceDll = "%System%\appmgmts.dll"
- From: ServiceDll = "%System%\appmgmts32.dll"
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_GLOBYY.SLO. 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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