TROJ_RANSOM.JEM
TrojanProxy:Win32/Sefbov.E (Microsoft); Ransom-AAY.gen.l (McAfee); Trojan Horse (Symantec); Trojan-Spy.Win32.Zbot.gyww (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Agent3.CHAC (AVG)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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.
TECHNICAL DETAILS
217,088 bytes
EXE
Yes
20 Feb 2013
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 copies of itself into the affected system:
- %System%\{malware file name}
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
Other System Modifications
This Trojan adds the following registry keys:
HKEY_USERS\.DEFAULT\Software\
AMService\CallBack
It adds the following registry entries:
HKEY_CURRENT_USER\Software\AMService\
CallBack
ID = "e27e"
This report is generated via an automated analysis system.
SOLUTION
9.300
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
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_USERS\.DEFAULT\Software\AMService
- CallBack
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_CURRENT_USER\Software\AMService\CallBack
- ID = "e27e"
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_RANSOM.JEM. 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.