Gen.Variant.Graftor.266801_2131ce152d

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):No processes have been created.The Trojan injects its code into the following process(es):

%original file name%.exe:740

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

The process %original file name%.exe:740 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

C:\UUWiseHelper.dll (291 bytes)
C:\ZMApi.dll (7972 bytes)
C:\dc.dll (122 bytes)
C:\KZSZ.ini (170 bytes)
C:\%original file name%.exe (17629 bytes)

The Trojan deletes the following file(s):

C:\uygqjgwuzpzhqdqfklvr.dfg (0 bytes)

Registry activity

The process %original file name%.exe:740 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "74 9B 83 35 41 08 A4 BE 56 80 1E C4 A0 08 25 D7"

[HKCU\Software\Microsoft\Windows Script\Settings]
"JITDebug" = "0"

[HKCU\Software\Microsoft\Multimedia\DrawDib]
"vga.drv 1276x846x32(BGR 0)" = "31,31,31,31"

Dropped PE files

MD5	File path
dedbe5273cec04d40d36b4583aec378c	c:\%original file name%.exe
dc6b73cbd1f6f5cec640a8c634ae50c8	c:\UUWiseHelper.dll
3acaceed9edcf17193c69b5409cec1e0	c:\ZMApi.dll
f803ad370a8649a143429f179af5f3ab	c:\dc.dll

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

Removals

Remove it with Ad-Aware

1. Click (here) to download and install Ad-Aware Free Antivirus.
2. Update the definition files.
3. Run a full scan of your computer.

Manual removal*

1. Terminate malicious process(es) (How to End a Process With the Task Manager):No processes have been created.
2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:

   C:\UUWiseHelper.dll (291 bytes)
   C:\ZMApi.dll (7972 bytes)
   C:\dc.dll (122 bytes)
   C:\KZSZ.ini (170 bytes)
   C:\%original file name%.exe (17629 bytes)

4. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
5. Reboot the computer.
   

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

VersionInfo

Company Name: ?????
Product Name: ???????? Www.52Dfg.Com
Product Version: 1.0.0.0
Legal Copyright: ??????????[www.52dfg.com],??????,?????????
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 1.0.0.0
File Description: ??,??,????????,????
Comments: ???????
Language: English (United States)

Company Name: ?????Product Name: ???????? Www.52Dfg.ComProduct Version: 1.0.0.0Legal Copyright: ??????????[www.52dfg.com],??????,?????????Legal Trademarks: Original Filename: Internal Name: File Version: 1.0.0.0File Description: ??,??,????????,????Comments: ???????Language: English (United States)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	3936256	1616896	5.5451	d25e31c21911a21cd2c61d40a275b0d0
UPX	3940352	1155072	1153024	5.10318	04e30e82204d96c20189e8a5b0dd8e3e
.idata	5095424	4096	1536	2.49204	1e0753d2fa21a44287efccbfbc31a5e8
.rsrc	5099520	86016	85504	2.30297	3bd46c4e50c6c686dd16f8de66e481ce
UPX	5185536	4096	4096	5.5324	53632e6c739200c4840e36771f5d548e

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
hxxp://92wg.sinaapp.com/softtj.php?act=add&softname=MZDS	220.181.136.30
apisoft.df0535.com	182.140.245.38

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

GET /softtj.php?act=add&softname=MZDS HTTP/1.1

Referer: hXXp://92wg.sinaapp.com/softtj.php?act=add&softname=MZDS

Accept: */*

Accept-Language: zh-CN

Content-Type: application/x-www-form-urlencoded

User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:37.0) Gecko/20100101 Firefox/37.0

Host: 92wg.sinaapp.com

Connection: Keep-Alive

HTTP/1.1 404 Not Found

Server: nginx

Date: Mon, 04 Apr 2016 06:56:03 GMT

Content-Type: text/html; charset=iso-8859-1

Content-Length: 208

Connection: keep-alive

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">.<html><head>.<title>404 Not Found</title>.</head><body>.<h1>Not Found</h1>.<p>The requested URL /softtj.php was not found on this server.</p>.</body></html>.HTTP/1.1 404 Not Found..Server: nginx..Date: Mon, 04 Apr 2016 06:56:03 GMT..Content-Type: text/html; charset=iso-8859-1..Content-Length: 208..Connection: keep-alive..<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">.<html><head>.<title>404 Not Found</title>.</head><body>.<h1>Not Found</h1>.<p>The requested URL /softtj.php was not found on this server.</p>.</body></html>...

Map

The Trojan connects to the servers at the folowing location(s):

Strings from Dumps

%original file name%.exe_740:

.text

.text

h.idata

h.idata

H.rsrc

H.rsrc

t%SVh

t%SVh

t$(SSh

t$(SSh

~%UVW

~%UVW

&scope&view&daylist&uinlist&gid&flag&filter&applist&refresh&aisortEndTime&aisortOffset&getAisort&aisortBeginTime&pagenum&externparam&firstGetGroup&icServerTime&mixnocache&scene&begintime&count&dayspac&sidomain&useutf8&outputhtmlfeed&rd

&scope&view&daylist&uinlist&gid&flag&filter&applist&refresh&aisortEndTime&aisortOffset&getAisort&aisortBeginTime&pagenum&externparam&firstGetGroup&icServerTime&mixnocache&scene&begintime&count&dayspac&sidomain&useutf8&outputhtmlfeed&rd

&curkey

&curkey

&unikey

&unikey

&syn_tweet_verson&paramstr&pic_template&richtype&richval&special_url&subrichtype&who&con

&syn_tweet_verson&paramstr&pic_template&richtype&richval&special_url&subrichtype&who&con

&special_url&subrichtype&pic_bo

&special_url&subrichtype&pic_bo

&SSh

&SSh