Dexter
Description
(Trend Micro) Based on our analysis of the malware, BKDR_DEXTR.A downloads files, sends information, and checks memory for information among others. But the centerpiece of the malware is its ability to collect and send certain information to a remote server. Some of the possible data that can be stolen from POS systems include such as username, hostname, key to decrypt the sent information, OS information, and list of running processes. These data are then presumably duplicated by remote malicious users.
The malware executable is found to be packed or encrypted and when loaded, it loads long garbage code to decrypt the actual code. However, this decryption routine involves only a combination of XOR and ADD instructions, with the use of a hardcoded key. The perpetrators behind ‘Dexter’ malware probably done this to make analysis difficult.
Names
| Name |
|---|
| Dexter |
| LusyPOS |
| StarDust |
Category
Malware
Type
- POS malware
- Reconnaissance
- Backdoor
- Keylogger
- Info stealer
- Credential stealer
- Botnet
Information
- https://blog.trendmicro.com/trendlabs-security-intelligence/infostealer-dexter-targets-checkout-systems/
- https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/the-dexter-malware-getting-your-hands-dirty/
- https://securitykitten.github.io/2014/12/01/lusypos-and-tor.html
- https://volatility-labs.blogspot.com/2012/12/unpacking-dexter-pos-memory-dump.html
- https://kc.mcafee.com/resources/sites/MCAFEE/content/live/PRODUCT_DOCUMENTATION/25000/PD25658/en_US/McAfee_Labs_Threat_Advisory-LusyPOS.pdf
- https://www.trendmicro.de/cloud-content/us/pdfs/security-intelligence/white-papers/wp-pos-ram-scraper-malware.pdf
- https://www.secureworks.com/research/point-of-sale-malware-threats
- https://www.us-cert.gov/ncas/alerts/TA14-002A
Malpedia
Other Information
Uuid
25d41291-d4ad-4a88-93c8-9f4cab025f12
Last Card Change
2020-05-25