Infection Channel: Downloaded from the Internet, Dropped by other malware
This malware was involved in a zero-day Java vulnerability exploit attack in January 2013. Its backdoor routines allow remote attackers to perform commands on the affected system, which may compromise the system's security.
To get a one-glance comprehensive view of the behavior of this Backdoor, refer to the Threat Diagram shown below.
This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
File size: 695,044 bytes
File type: Mach-O
Memory resident: No
Initial samples received date: 19 Feb 2013
Payload: Compromises system security
Arrival Details
This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Backdoor Routine
This backdoor connects to the following URL(s) to send and receive commands from a remote malicious user:
NOTES:
This backdoor opens a reverse shell to wait for commands from the remote malicious user.
It is a modified version of SSH daemon used to encrypt the network traffic to avoid easy detection. It encrypts the traffic with the remote server using RSA private key. This version is also modified so that the command history is not to be logged.
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