INF_PHORPIEX.A
Mal/Runbat-A (Sophos); INF/Autorun.a (McAfee)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan may be dropped by other malware.
It automatically executes files when a user opens a drive.
TECHNICAL DETAILS
7,180 bytes
INF
No
27 Sep 2016
Arrival Details
This Trojan may be dropped by the following malware:
- variants of WORM_PHORPIEX
Propagation
The said .INF file contains the following strings:
{garbage}
[autorun]
{garbage}
icon=%SystemRoot%\system32\SHELL32.dll,4
{garbage}
action=Open folder to view files
{garbage}
shellexecute=Manager.bat
{garbage}
UseAutoPlay=1
{garbage}
Other Details
This Trojan automatically executes the following files when a user opens a drive:
- {drive letter}:\Manager.bat
SOLUTION
9.800
12.818.08
05 Oct 2016
12.819.00
06 Oct 2016
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
Identify and terminate files detected as INF_PHORPIEX.A
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 3
Search and delete AUTORUN.INF files created by INF_PHORPIEX.A that contain these strings
{garbage}
[autorun]
{garbage}
icon=%SystemRoot%\system32\SHELL32.dll,4
{garbage}
action=Open folder to view files
{garbage}
shellexecute=Manager.bat
{garbage}
UseAutoPlay=1
{garbage}
Step 4
Scan your computer with your Trend Micro product to delete files detected as INF_PHORPIEX.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.
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