TROJ_DROPPER.XOF
TrojanDownloader:Win32/Dofoil.R (Microsoft), Trojan.Win32.Jorik.Mokes.cfr (Kaspersky), Trojan.Ransomlock!g32 (Symantec), Win32/TrojanDownloader.Zurgop.AW trojan (NOD32), Trojan-Downloader.Win32.Dofoil (Sunbelt)
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:
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.
It deletes the initially executed copy of itself.
TECHNICAL DETAILS
93,184 bytes
EXE
Yes
23 Nov 2012
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:
- %Application Data%\{random folder name}\{random file name}.exe
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
It injects codes into the following process(es):
- svchost.exe
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Explorer\Run
SourceTec = "%Application Data%\{random folder name}\{random file name}.exe"
Other Details
This Trojan connects to the following possibly malicious URL:
- {BLOCKED}04.{BLOCKED}loose.co
It deletes the initially executed copy of itself