VBS_MAILFIND.A

This worm 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 gathers target email addresses from cached email, address books, and mailboxes. The sent messages contains a link where a copy of the malware may be downloaded.

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

Arrival Details

This worm 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.

Installation

This worm creates the following folders:

• C:\temp

Propagation

This worm uses the MAPI to send email messages that contain links to sites hosting remote copies of itself with the following details:

• Sender: {BLOCKED}te.{BLOCKED}bon3374@yahoo.de

It uses any of the following Simple Mail Transfer Protocol (SMTP) servers:

• SMTP Server: "mailgate.otenet.gr"
• SMTP Server Port: 587
• User Name: "nastia26@otenet.gr"
• Password: "nat1978#"

It gathers target email addresses from cached email, address books, and mailboxes.

The sent messages contain the following link(s), where a copy of the malware may be downloaded:

• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/uw92ooko73yincw/Documents.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/j7eiyij7wshwhoe/Documents.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/x2npx95tzmk724r/Documents.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/i0orsrnizec9fr0/Documents.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/liwvrveoh67qbnw/Documents.zip?dl=1 - Not accessible

It sends out the following messages:

Here re the required documents you asked for.
{malware download link} hyper link as Documents.zip
Keep me posted for any complaints or anything.
Thank you.

Download Routine

This worm downloads an updated copy of itself from the following website(s):

• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/uw92ooko73yincw/Documents.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/j7eiyij7wshwhoe/Documents.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/x2npx95tzmk724r/Documents.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/i0orsrnizec9fr0/Documents.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/liwvrveoh67qbnw/Documents.zip?dl=1 - Not accessible

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

• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/o0d1ce9toe9a9rq/clickyes.dat?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/f2h777xsqv8cepb/clickyes.dat?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/ui6zo977ttx7bqy/clickyes.dat?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/tsv6l172jqlt0tf/clickyes.dat?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/d9bt6hyvhjjwwkd/clickyes.dat?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/o0d1ce9toe9a9rq/clickyes.dat?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/f2h777xsqv8cepb/clickyes.dat?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/ui6zo977ttx7bqy/clickyes.dat?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/tsv6l172jqlt0tf/clickyes.dat?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/d9bt6hyvhjjwwkd/clickyes.dat?dl=1 - Not accessible

It connects to the following URL(s) to download its component file(s):

• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/rxkbtjtpvzgrra4/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/8w0ldbbf0ndb78l/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/ubdlqx6leqy3gw8/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/h6znwxvjs3rpvw7/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/eclb44x6t01lxsg/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/ywfb7lux4of25au/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/6xm9cw2dkmo0q0k/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/xoqbc490nurxeow/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/ja2hb47rwkzqqo8/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/y8lpltcjxuf81n7/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/8zaselhbwkdw3w7/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/xfyakmoo7gzv4j3/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/bxlxjku6u6i5mqq/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/gs3eq8r00yn4of8/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/6e7xw9qrovheepd/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/073he87wsizsn14/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/z4jl4ckge68ly86/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/2v5auf9b4wh1sas/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/clw9swn6w7ez8yz/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/yc4ju3wap4y71va/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/l93ij60w4jsgj6e/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/ll2ydaxt1qesxbg/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/h5fy4kinzcqpo0e/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/1dxzjip2h8ep2fl/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/98yoxgz9nh00lxp/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/r7ll4mze3xigpkb/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/da9mznunn0kz588/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/36gldtb1ngjhjg1/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/h3bt7tygbf91jsm/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/m26w3f17a8zc3tr/xml.zip?dl=1 - Not accessible
• http://{BLOCKED}.{BLOCKED}xusercontent.com/s/vntfj2zc6nygvv2/xml.zip?dl=1 - Not accessible

It saves the files it downloads using the following names:

• C:\temp\{random}.{random} - Component file
• C:\temp\clickyes.exe - Malicious file

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

It saves downloaded files into the said created folder.

As of this writing, the said sites are inaccessible.