Thursday, 12 November 2015

AccountsPayable Remittance Advice

Description: Remittance Advice 6134443_101115_141851.xls macro malware.


Subject: Remittance Advice

Message Body:

Please find attached your remittance advice.


Attachment filename(s):


Sha256 Hashes:

f04473304c97b86589f7151b317c8988870db9d05945d0f57e7efe3bd51ee53b [1]
b4afaeb8c54b24c0d3de694407ddab56ba68bdd625410a72e6f918a73bf3a41d [2]

Malware Virus Scanner Report(s):

VirusTotal Report: [1] (detection 4/55)
VirusTotal Report: [2] (detection 4/55)

Sanesecurity Signature detection:

badmacro.ndb: Sanesecurity.Badmacro.XlsM.003.

Important notes:

The current round of Word/Excel/XML/Docm attachments are targeted at Windows users.

Apple, Android and Blackberry mobiles/tablets that open these attachments will be safe

The auto-downloaded/payload is normally a Windows executable and so will not currently run on  any operating system, apart from Windows.

However, if you are an Apple, Android or Blackberry user... and forward the message to a Windows user, you will then put them at risk of opening the attachment and auto-downloading the malware.

These word/excel attachments normally try to download either...

    Dridex banking trojan,
    Shifu banking trojan

... both of which are designed to steal login information regarding your bank accounts either by
key logging, taking screen shots or copying information directly from your clipboard (copy/paste)

It's also worth remembering that the company itself  may not have any knowledge of this faked email and any link(s) or attachment in the email normally won't have come from their servers or IT systems but from an external bot net.

These bot-net emails normally have faked email headers/addresses.

It's not advised to ring/email the the company themselves, as there won't really be anything they can do to help you or to stop the emails being spread.



Anonymous said...



Anonymous said...

we have been hit with three attacks in three days. each one has the same type of macro infected xls file but from a different address.

Seems to have a low detection rate on most av scanners.

We have put a complete quarantine in place for xls attachments, also recommend disabling Macros completely in Excel.

**Attack 1**
Occurred: 10/11/15 12:00pm approx.
Subject: PO99631
Attachment: 99631 RBE.xls

**Attack 2**
Occurred: 11/11/15 10:48am approx.
Subject: Invoice SI823610 from Order Ref 4016584
Attachment: SI823610.XLS

**Attack 3**
Occurred: 12/11/15 11:00am
Subject: Invoice
Attachment: V414980.XLS

Anonymous said...

We're getting two runs every day. All Dridex payloads, different strain each day.
If you have pattern filtering try adding raw mail body checks for these words


See if it improves anything.

Unknown said...

Got two of these: the IP traces back to Comsats, Islamabad, Pakistan. I notified them via their feedback link, do not think I will hear anything back.

Anonymous said...

If opened with Open Office, would the virus still execute?

Anonymous said...

Would the virus still execute when opened in Open Office?

Anonymous said...

These Macros do not run in Open Office, Libre Office, Word Perfect or any other office program that can read Word or Excel files.