OSX_REVIR.A
Mac OS X
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Mac malware disguises itself as a harmless document by dropping and executing a non-malicious .PDF file onto the affected system.
To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.
![](https://documents.trendmicro.com/images/OSX_RERVIR_A.gif)
This Trojan connects to a certain website to download and execute a malicious file detected by Trend Micro as OSX_IMULER.A.
This Trojan may be unknowingly downloaded by a user while visiting malicious websites.
It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.
TECHNICAL DETAILS
192,512 bytes
ELF
No
23 Sep 2011
Downloads files
Arrival Details
This Trojan may be unknowingly downloaded by a user while visiting malicious websites.
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- http://{BLOCKED}od.ru/cdmax
Trend Micro detects the dowloaded file as:
- OSX_IMULER.A
It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.
NOTES:
This Trojan disguises itself as a harmless document by dropping and executing a non-malicious PDF. It creates a downloader component in the following location:
- /tmp/host
The downloaded file is then saved in:
- /tmp/updtdata
SOLUTION
9.200
8.450.13
23 Sep 2011
8.451.00
23 Sep 2011
Step 2
Scan your computer with your Trend Micro product to delete files detected as OSX_REVIR.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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