 |
สำนักงานพัฒนาธุรกรรมทางอิเล็กทรอนิกส์ Electronic Transactions Development Agency |
|
สำนักงานพัฒนาธุรกรรมทางอิเล็กทรอนิกส์ Electronic Transactions Development Agency |
Tool: SeDLL| Names | SeDLL | |
| Category | Malware | |
| Type | Loader | |
| 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. | |
| 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 | <https://malpedia.caad.fkie.fraunhofer.de/details/win.sedll> | |
Last change to this tool card: 24 April 2021
Download this tool card in JSON format
| Changed | Name | Country | Observed | ||
APT groups | |||||
| Leviathan, APT 40, TEMP.Periscope |  | 2013-Jul 2021 |  | ||
1 group listed (1 APT, 0 other, 0 unknown)
|
Digital Service Security Center Follow us on
|
Report incidents |
|
 |
+66 (0)2-123-1227 | |
 |
[email protected] | |