Malware.View on attack.mitre.org
DOWNIISSA is a shellcode downloader that has been used by MirrorFace since at least 2022 to deploy payloads, including the LODEINFO backdoor.
| Technique | Procedure example |
|---|---|
| T1027.013 Encrypted/Encoded File |
DOWNIISSA code is base64 encoded and XOR encrypted. |
| T1055 Process Injection |
DOWNIISSA can inject shellcode directly into process memory including WINWORD.exe and msiexec.exe. |
| T1070.004 File Deletion |
DOWNIISSA can delete files after download. |
| T1105 Ingress Tool Transfer |
DOWNIISSA can download files to the compromised host. |
| T1106 Native API |
DOWNIISSA can use the `URLDownloadToFileA()` API to download from remote resources. |
| T1140 Deobfuscate/Decode Files or Information |
DOWNIISSA can decode strings prior to execution. |
| T1218.007 Msiexec |
DOWNIISSA can create an instance of msiexec.exe and inject LODEINFO shellcode into the memory of the process. |
None recorded.
Data from MITRE ATT&CK® (Enterprise). ATT&CK® is a registered trademark of The MITRE Corporation.
