Trojan:SymbOS/Singlejump.C
Summary
Singlejump.C (renamed Onehop.C) is a malicious SIS file dropper, that disables most well known third party file managers and Anti-Virus software. It uses modified Cabir to send itself forward and drops Singlejump.B torjan.
The modified Cabir is started automatically when the Singlejump.C is installed and will start spreading. When spreading from infected phone, the SIS files it sends will contain only the Singlejump.B.
Singlejump.C tries to disable F-Secure Mobile Anti-Virus by replacing it's files with non-functional versions. However as F-Secure Mobile Anti-Virus is capable of detecting Singlejump.C by using generic detection. The Anti-Virus will detect the infected SIS file and prevent it from being installed. Provided that the Anti-Virus is in realtime scan mode as it is by default.
Removal
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
-
Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
-
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
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Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
Installation to system
When installed Singlejump.C will replace most common third party file managers, Anti-Virus programs and application installer with non-functional versions.
Spreading in:MetalGear_by_scar69.sis
Payload
Disables following applications
- Simworks Anti-Virus
- F-Secure Mobile Anti-Virus
- Application installer
- Cabirfix
- Decabir
- F-Cabir
- FExplorer
- File manager
- Smart file manager
- System Explorer
)
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