Gelup
Description
(Trend Micro) In the same June 20 campaign, we also found another apparently new, undisclosed malware, which we named “Gelup”. A custom packer was also used to pack some variants of this malware. Again, it uses the same packer that TA505 has been using.
The unpacked payload is written in C++ and basically works as a downloader for another malware. What makes Gelup different, however, is its obfuscation technique and UAC-bypassing function bymocking trusted directories (spoofing the file’s execution path in a trusted directory), abusing auto-elevated executables, and using the dynamic-link library (DLL) side-loading technique.
First, Gelup resolves most Windows application programming interfaces (APIs) by using the hash just before calling it —a common technique used by a lot of malware families. Second, the strings in Gelup’s code are decrypted at runtime.
Names
| Name |
|---|
| Gelup |
Category
Malware
Type
- Downloader
Information
Alienvault Otx
Other Information
Uuid
fabed506-43cc-4663-8ad1-586396c8b76a
Last Card Change
2020-04-20