Detection rules › Sigma
Potential RipZip Attack on Startup Folder
Detects a phishing attack which expands a ZIP file containing a malicious shortcut. If the victim expands the ZIP file via the explorer process, then the explorer process expands the malicious ZIP file and drops a malicious shortcut redirected to a backdoor into the Startup folder. Additionally, the file name of the malicious shortcut in Startup folder contains {0AFACED1-E828-11D1-9187-B532F1E9575D} meaning the folder shortcut operation.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1547 Boot or Logon Autostart Execution |
| Privilege Escalation | T1547 Boot or Logon Autostart Execution |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 11 | FileCreate |
Stages and Predicates
Stage 1: selection
Image|endswith: '\explorer.exe'
TargetFilename|contains: '.lnk.{0AFACED1-E828-11D1-9187-B532F1E9575D}'
TargetFilename|contains: '\Microsoft\Windows\Start Menu\Programs\Startup'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
Image | ends_with |
|
TargetFilename | match |
|