TROJ_KRYPTIK.XXHY
Trojan:Win32/Totbrick.E (Microsoft); Trojan.Trickybot (Symantec); Trojan.Win32.Trickster.hl (Kaspersky); Troj/Wonton-YJ (Sophos); Trojan-Downloader.Win32.Upatre.tfl (v) (Sunbelt)
Windows
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
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:
- %User Profile%\application data\{malware file name}
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
It creates the following folders:
- Modules
Dropping Routine
This Trojan drops the following files:
- %Windows%\Tasks\services update.job
- client_id
(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)
Other Details
This Trojan connects to the following possibly malicious URL:
- {BLOCKED}70.163
This report is generated via an automated analysis system.
SOLUTION
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
Search and delete these components
- %Windows%\Tasks\services update.job
- client_id
Step 3
Search and delete this folder
- Modules
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_KRYPTIK.XXHY. 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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