Threat Description

Trojan: Android/KabStamper.A


Category: Malware
Type: Trojan
Platform: Android
Aliases: Trojan:Android/KabStamper.A


KabStamper.A is a malware that circulated in Japan during the AKB48 (a Japanese pop group) election. The malware modifies images found in the device by overwriting them with a predefined image.


Automatic action

F-Secure's Mobile Security product blocks installation of this program with default settings.

More scanning & removal options

More information on scanning or removal options are available in the documentation for your F-Secure Mobile Security product on the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details

KabStamper.A is a malware that circulated in Japan during the AKB48 'election.' AKB48 is a Japanese pop group that consists of 48 members. The 'election' was held to select the most popular member who will become the face of the group.

KabStamper.A is distributed via trojanized applications that deliver news and videos about the AKB48 group. Malicious code in the malware is highly destructive; it destroys images found in the sdcard/DCIM/camera folder that stores images taken with the device's camera. Every five minutes, the malware checks this folder and modifies any found image by overwriting it with a predefined image.

Comparison between before and after KabStamper's infection.


Suspect a file or URL was wrongly detected? Submit a sample to our Labs for analysis

Submit Now

Keep your mobile device protected

F-Secure Mobile Security will keep your mobile device protected on the go and enable you to find it in case you lose it

Learn More