Uploaded June 2012 | Updated September 2026, 2 weeks ago

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In general it drops itself to %windir% with filename "pic.exe", edits a line in Win.ini to load that file at every boot ("load=pic.exe"), and then it creates about 1,410 folders named with zeros, ones, twos, threes, fours and fives, and it keeps stacking number by number using this pattern:
0
00
000
...
00000000000000000000000000000000... (It's pretty much difficult to count...)
After it came to maximum, it continues to next number (1):
1
11
111
...

Another interesting thing is that it checks the folder name of current folder with specific pattern. If the 1st letter is W or 5th letter is O and 6th letter is W, it will not show fake error message. Note that it does check even parent folders as far it's noticed when trojan was launched on desktop.

Aliases:
Trojan.Win32.Macur (Kaspersky Lab)
Trojan: Macur (McAfee)
Troj/Macur (Sophos)
Trj/Macur (Panda)
W32/Trojan!028f (FPROT)
Trojan:Win32/Macur (MS(OneCare))
Trojan.Macur (DrWeb)
Win32/Macur trojan (Nod32)
Trojan.Win32.Macur (BitDef7)
Trojan.Macur.B (VirusBuster)
Win32:Trojan-gen (AVAST)
Trojan.Win32.Macur (Ikarus)
Generic.KSI (AVG)
TR/Macur.A (AVIRA)
Trojan.Macur (NAV)
W32/Macur.A (Norman)
Macur (NAI)
TROJ_MACUR.A (PCCIL)
Trojan.Macur (Rising)
Trojan.Win32.Macur [AVP] (FSecure)
TROJ_MACUR.A (TrendMicro)
Trojan.Macur.B (VirusBusterBeta)