W32.HLLW.Gaobot.AO is a minor variant of W32.HLLW.Gaobot.AF
. It attempts to spread to network shares that have weak passwords and allows hackers to access an infected computer through IRC.
The worm uses multiple vulnerabilities to spread, including:
W32.HLLW.Gaobot.AO is compressed with UPX.
Virus definitions dated prior to October 1, 2003 may detect this worm as a hack tool.
Virus definitions dated November 19, 2003 and later contain a modified W32.HLLW.Gaobot.AO signature to account for the discovery of a minor variant.
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.