SeDLL
Description
(Proofpoint) This DLL is used for decrypting and executing another JavaScript backdoor such as AIRBREAK. The DLL is registered by the installer using regsvr32. The DllRegisterServer export is then called, which performs checks on the commandline parameter. If the string “DR” is passed as an argument, or if the DLL is running in the active session with a username that is not “system”, the final JavaScript backdoor is decoded using a custom base64 alphabet. This backdoor has to be present in the same directory as the dll, with a “.tmp” file extension. The backdoor script is then executed using the IActiveScript and IActiveScriptParse32 COM interfaces.
Names
| Name |
|---|
| SeDLL |
Category
Malware
Type
- Loader
Information
- https://www.proofpoint.com/us/threat-insight/post/leviathan-espionage-actor-spearphishes-maritime-and-defense-targets
- https://www.fireeye.com/blog/threat-research/2018/03/suspected-chinese-espionage-group-targeting-maritime-and-engineering-industries.html
- https://www.recordedfuture.com/chinese-threat-actor-tempperiscope/
Malpedia
Other Information
Uuid
caedd5d3-ee3f-4114-bc90-68648be98917
Last Card Change
2021-04-24