SymbOS/Acallno
Additional type information.
Date that AVERT discovered this threat.
File size, in bytes, of the threat.
McAfee DAT files contain detection and repair information for threats. The Minimum DAT field specifies the lowest/oldest DAT version that is capable of detecting the first incarnation of a threat, and the release date. The highest/newest DAT version should always be used for the most complete protection and are available on the Anti-Virus Updates page.
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For each description listed, detection is always available. In the event that the DAT version specified is not yet available, an EXTRA.DAT file may be downloaded via the McAfee AVERT Extra.dat Request Page. Alternatively, minimally tested HOURLY BETA DAT files are available for downloading.
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The scan engine uses the DAT files to detect threats. The Minimum Engine field specifies the lowest/oldest engine version that is capable of detecting this threat. The highest/newest engine version should always be used for the most complete protection and are available on the Anti-Virus Updates page.
Date/time this description was published using Pacific Time.
Date/time this description was last modified using Pacific Time.
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Characteristics
SymbOS/Acallno.A is a spyware application.
It steals the following informstion:
- Incoming and outgoing SMS messages.
The stolen messages are forwarded to a predetermined phone number.
SymbOS/Acallno.A is a commercial application used for monitoring text messages. It is distributed in a sis file named ".SIS", where is the IMEI of the handset for which the software is customized.
The malware installs under the name "appstart".
A user who purchases SymbOS/Acallno.A must know the IMEI of the device they wish to monitor.
The user must also provide a mobile number which is to receive the forwarded SMS messages.
The user must send an SMS message containing a start message to the target phone to begin receiving forwarded messages. Similarly an SMS message containing a stop message must be sent to end the forwarding of messages.
Removal
