Kind of older versions, but a good general idea of the performance on XP systems.
1. PC Tools AntiVirus Free Edition 4.0.0.26 (freeware) pctools antivirus
Total memory usage during idle: 5680K
Total memory usage during scanning: 23948K
Cannot detect private trojan
Link:
PC Tools AntiVirus - Free Anti Virus Download and Removal
2. Norten Antivirus 2009 (shareware) Norton Antivirus 2009
Total memory usage during idle: 6000K
Total memory usage during scanning: 51312K
Cannot detect private trojan
Link:
Antivirus Software - Spyware Remover | Norton AntiVirus
3. Kaspersky Antivirus 2009 v8.0.0.357 (shareware) Kaspersky
Total memory usage during idle: 6565K
Total memory usage during scanning: 50892K
Detects private trojan through heuristic method, not through virus definition
Link:
Anti-Virus Software with Anti-Spyware Protection - Kaspersky Lab United States
4. Spyware Terminator v2.2.3.444 (freeware) Spyware Terminator
Total memory usage during idle: 7624K
Total memory usage during scanning: 64292K
Unable to detect virus with the built-in antivirus. However when tried to run the trojan, HIPS picks it up as a threat
Uses ClamAV for antivirus protection
Link:
Free spyware removal and spyware protection - Spyware Terminator
5. Norton AntiVirus 2008 (shareware) Norton Antivirus
Total memory usage during idle: 8424K
Total memory usage during scanning: 78008K
Cannot detect private trojan
Link:
Antivirus Software - Spyware Remover | Norton AntiVirus
6. BitDefender 10 Free Edition (freeware) Bitdefender
Total memory usage during idle: 9668K
Total memory usage during scanning: 42492K
Cannot detect private trojan
Link:
http://download.bitdefender.com/windows/desktop/free/final/en/bitdefender_free_v10.exe
7. Avira AntiVir Personal 8 (freeware) Avira
Total memory usage during idle: 10072K
Total memory usage during scanning: 70072K
Detects private trojan through heuristic method, not through virus definition
Link:
Free antivirus - Avira AntiVir
8. Kaspersky Internet Security 2009 v8.0.0.3578 (shareware) KIS 2009
Total memory usage during idle: 16180K
Total memory usage during scanning: 44216K
Detects private trojan through heuristic method, not through virus definition
Link:
Internet Security Software 2010 for Home Computer Security - Kaspersky Lab United States
9. Rising Antivirus 20.44 (freeware) Rising Antivirus
Total memory usage during idle: 16252K
Total memory usage during scanning: 59704K
Cannot detect private trojan through virus definition but blocks it from executing
Link:
RISING FREE Antivirus - Anti-Virus,Worms,Trojans,Spywares,Adwares
10. DriveSentry 3.1 (freeware) Drivesentry
Total memory usage during idle: 16992K
Total memory usage during scanning: 18504K
Cannot detect private trojan
Link:
DriveSentry ? Antivirus, data protection, encryption & USB storage backup solutions
11. avast! 4 Home Edition (freeware) Avast Home Edition
Total memory usage during idle: 23100K
Total memory usage during scanning: 63416K
Cannot detect private trojan
Link:
http://www.avast.com/eng/avast_4_home.html
12. CA Anti-Virus 2008 (shareware) CA Antivirus
Total memory usage during idle: 37756K
Total memory usage during scanning: 47556K
Cannot detect private trojan
Link:
CA Anti-Virus Plus Anti-Spyware 2010
13. AVG Anti-Virus Free Edition 8.0.138 (freeware) AVG
Total memory usage during idle: 38244K
Total memory usage during scanning: 88244K
Detects private trojan through virus definition. Maybe they got a sample of the private trojan and added the detection to its virus definition
Link:
AVG Free - Download Free Antivirus and Antispyware for Windows 7, Vista and XP
14. ESET NOD32 Antivirus 3.0.669 (shareware) eset nod32
Total memory usage during idle: 40364K
Total memory usage during scanning: 46012K
Cannot detect private trojan
Link:
NOD32 Antivirus Protection for Your PC: Antivirus for Windows XP and more
15. ESET Smart Security 3.0.669 (shareware) eset smart security
Total memory usage during idle: 42640K
Total memory usage during scanning: 39284K
Cannot detect private trojan
Link:
Firewall, Antivirus, Antispam: ESET Smart Security Has It All
16. Trend Micro AntiVirus plus AntiSpyware 2008 (shareware) Trend Micro
Total memory usage during idle: 42608K
Total memory usage during scanning: 63704K
Able to detect private trojan as suspicious activity and blocked it from executing
Link:
Trend Micro AntiVirus plus AntiSpyware 2008 - Trend Micro APAC
17. ZoneAlarm Antivirus 7.0.483 (shareware) Zonealarm antivirus
Total memory usage during idle: 52772K
Total memory usage during scanning: 97200K
Cannot detect private trojan
Link:
Antivirus Software, Firewall, Spyware Removal, Virus Scan: Computer Security by ZoneAlarm
18. BitDefender Antivirus 2008 v11 (shareware) Bitdefender
Total memory usage during idle: 56440K
Total memory usage during scanning: 73720K
Able to detect private trojan as threat
The free version uses BitDefender v10 and the shareware version uses the latest v11. So I had to make a comparison on both BitDefender products.
Link:
http://www.bitdefender.com/PRODUCT-2194-en–BitDefender-Antivirus-2008.html
19. Comodo AntiVirus 2.0.17.58 (freeware) Comodo antivirus
Total memory usage during idle: 56668K
Total memory usage during scanning: 76668K
Unable to detect virus through its virus definition. However when tried to run the trojan, HIPS picks it up as a threat.
Link:
AntiVirus Download Comodo Free Anti Virus Software Internet Security
20. Trend Micro Internet Security 2008 (shareware) Trend Micro
Total memory usage during idle: 59140
Total memory usage during scanning: 79688K
Able to detect private trojan as suspicious activity and blocked it from executing
21. F-Secure Anti-Virus 2008 (shareware) F-Secure
Total memory usage during idle: 61972K
Total memory usage during scanning: 178824K
Cannot detect private trojan
Link:
F-Secure ? AntiVirus Software, Internet Security Tools, Online Backup & Mobile Security Software
22. Moon Secure Antivirus 2.2.2.163 (freeware) Moon Secure Antivirus
Total memory usage during idle: 71528K
Total memory usage during scanning: 71528K
Cannot detect private trojan
No changes in memory usage during idle and scanning
Uses Clam Antivirus engine and definition
Link:
http://www.moonsecure.com/
23. Panda Antivirus 2008 (shareware) Panda Antivirus 2008
Total memory usage during idle: 76344K
Total memory usage during scanning: 101416K
Cannot detect private trojan
Link:
Antivirus, anti-spyware and anti-spam. Panda Antivirus 2008 Panda Security.
24. McAfee VirusScan Plus 2008 (shareware) Mcafee VirusScan plus
Total memory usage during idle: 87632K
Total memory usage during scanning: 140484K
Detects private trojan as backdoor program
Link:
Virus, Spyware, Virus Scan Software | VirusScan Plus | McAfee
25. Norman Antivirus & Antispyware (shareware) norman security suite
Total memory usage during idle: 99856K
Total memory usage during scanning: 201660K
Cannot detect private trojan
Link:
http://www.norman.com/Product/Home_Home_office/NVC/49922/
26. Windows One LiveCare 2.5 (shareware) Windows One LiveCare
Total memory usage during idle: 102868K
Total memory usage during scanning: 107868K
Cannot detect private trojan
Link:
Windows Live OneCare safety scanner: Free online tool for PC health and safety
27. eEye Blink 4.04 Personal Edition (shareware) eEye Blink
Total memory usage during idle: 117972K
Total memory usage during scanning: 131412K
Cannot detect private trojan
Free 1 year license for US/Canada residents
Link:
Blink Personal Edition - Free Product Trial | eEye Digital Security
28. G DATA AntiVirus 2008 (shareware) G-data antivirus
Total memory usage during idle: 130544K
Total memory usage during scanning: 175176K
Cannot detect private trojan
Link:
Antivirus Download, Antivirus-Software - G Data Software AG
29. Quick Heal AntiVirus Plus 2008 v9.50 (shareware) quickheal antivirus
Total memory usage during idle: 151660K
Total memory usage during scanning: 201660K
Cannot detect private trojan
Link:
Quick Heal Internet Security