Self Extracting Package Creation Via Iexpress.EXE From Potentially Suspicious Location
Detects the use of iexpress.exe to create binaries via Self Extraction Directive (SED) files located in potentially suspicious locations. This behavior has been observed in-the-wild by different threat actors.
Detection logic
Detection requirements
- Platform
- LinuxmacOSWindows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
- Log source product
- windows
- Log source category
- process_creation
Known benign triggers
- Administrators building packages using iexpress.exe
MITRE ATT&CK mappings
0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.
References
| Reference | Cited by |
|---|---|
| decoded.avast.io/janvojtesek/raspberry-robins-roshtyak-a-little-lesson-in-trickery/ | Only this detection cites it |
| en.wikipedia.org/wiki/IExpress | 3 |
| strontic.github.io/xcyclopedia/library/iexpress.exe-D594B2A33EFAFD0EABF09E3FDC05FCEA.html | 3 |
| www.virustotal.com/gui/file/602f4ae507fa8de57ada079adff25a6c2a899bd25cd092d0af7e62cdb619c93c/behavior | 3 |
From the source
- At source
- Open at source
- Upstream identifier
- b2b048b0-7857-4380-b0fb-d3f0ab820b71
- Tagged by the source as
- attack.stealth
Licence
- Published under
- Detection Rule License 1.1Read the licence
- Attribution
- Required
Authorship
- Published
- Aug 26, 2026
- Version
- 1