Avast5 detected cmdagent.exe and msmpeng.exe as threat

Viruses and worms
1

Just installed the Avast5 free edition, did a scan and it detect virus/threat in my running process, the 2 process is cmdagent.exe(belong to Comodo CIS) and msmpeng.exe(belong to Window Defender). cmdagent.exe have 2 threat and msmpeng.exe have 13 threat. Below are the virus name for the process

The 2 threat list for cmdagent.exe
Win32:Adloader-AC
Win32:Delf-DNW

tHE 13 threat list for msmpeng.exe
Win32:Adloader-AC
Win32:Fraudload-P
Win32:Agent-SG
Win32:PC Client-OD
Win32:Baidubar-B
Win32:Small-HZH
Win32:Banker-CDW
Win32:Agent-CWD
Win32:Small-HUF
Win32:Small-gen2
Win32:Zbot-AVH
BV:Autorun-E
JS:Agent-AU

I’m using Window XP sp3, Comodo CIS(Only using the Firewall & Defense+) & Window defender for realtime antispyware scan, i had done a avast5 scan on the Comodo folder and window defender folder where the mentioned exe file are located, no threat are reported, but whenever i use custom scan with features to scan memory process & rootkit, i will get threat warning. I am also using mbam and had done a scan, which if i’m not wrong also scan for memory process,i have also used Superantispyware & Spybot to scan, nothing were detected.i’m really confused, Thanks

2

Update, had use avast5 to schedule a boot time scan and the default full system scan, scan completed with nothing found, i had went through the custom scan log and the detection log is show below, by the way, i will only get threat warning when scanning with custom scan(with memory scan, auto-start program scan and rootkit scan enabled, the infected file cannot be deleted or move to chest, the error is show as ''access is denied(5).When using the default bootime scan and default full system scan, no infection are detected.

Process 1120 [cmdagent.exe], memory block 0x0000000000F80000, block size 90112 [L] Win32:Agent-KXV [Drp] (0)
Process 1120 [cmdagent.exe], memory block 0x0000000008C10000, block size 843776 [L] Win32:Delf-DNW [Trj] (0)

Process 1176 [msmpeng.exe], memory block 0x0000000003D80000, block size 262144 [L] Win32:Adloader-AC [Trj] (0)
Process 1176 [msmpeng.exe], memory block 0x0000000003ED0000, block size 262144 [L] Win32:FraudLoad-P [Trj] (0)
Process 1176 [msmpeng.exe], memory block 0x0000000004050000, block size 262144 [L] Win32:Agent-SG [Trj] (0)
Process 1176 [msmpeng.exe], memory block 0x00000000040A0000, block size 262144 [L] Win32:PcClient-OD [Trj] (0)
Process 1176 [msmpeng.exe], memory block 0x0000000004130000, block size 262144 [L] Win32:Baidubar-B [Trj] (0)
Process 1176 [msmpeng.exe], memory block 0x00000000041E0000, block size 262144 [L] Win32:Small-HZH [Trj] (0)
Process 1176 [msmpeng.exe], memory block 0x00000000042C0000, block size 262144 [L] Win32:Banker-CDW [Trj] (0)
Process 1176 [msmpeng.exe], memory block 0x0000000004320000, block size 262144 [L] Win32:Agent-CWD [Trj] (0)
Process 1176 [msmpeng.exe], memory block 0x0000000004390000, block size 262144 [L] BV:AutoRun-E [Wrm] (0)
Process 1176 [msmpeng.exe], memory block 0x0000000004490000, block size 262144 [L] JS:Agent-AU [Expl] (0)
Process 1176 [msmpeng.exe], memory block 0x0000000004560000, block size 397312 [L] Win32:Small-HUF [Trj] (0)
Process 1176 [msmpeng.exe], memory block 0x00000000045E0000, block size 262144 [L] Win32:Small-gen2 [Trj] (0)
Process 1176 [msmpeng.exe], memory block 0x00000000046A0000, block size 262144 [L] Win32:Zbot-AVH [Trj] (0)