Trojan.Win32.Inject.azgw (Kaspersky), Gen:Variant.Kazy.290327 (B) (Emsisoft), Gen:Variant.Kazy.290327 (AdAware), Backdoor.Win32.Simbot.FD, BackdoorSimbot.YR (Lavasoft MAS)Behaviour: Trojan, Backdoor
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 1117d8c373cb6fc6583c733af94e04c3
SHA1: 2a1b5f9e312ff47a6e378200d257a8e965bcda29
SHA256: 43a02fa5457fd01657487fb6ba38cda5b2d2728319f20145cca7dbe01d52c582
SSDeep: 384:FeoOgUsc274/5gWacWM9vpbR7w5UPcIf8fxgIeN9zQy7kQ818Hv:FeoOgUsc2yQ3kaSPQv4zQwk7g
Size: 27136 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2010-12-29 09:37:00
Analyzed on: WindowsXPESX SP3 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):
mscorsvw.exe:172
%original file name%.exe:780
regedit.exe:820
The Trojan injects its code into the following process(es):
svchost.exe:1596
Mutexes
The following mutexes were created/opened:No objects were found.
File activity
The process %original file name%.exe:780 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\4$@2.dat (48 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\Crypto\RSA\S-1-5-21-1844237615-1960408961-1801674531-1003\c5b88721db08c824db69d0bbc702beb8_75ed9567-aa58-4c8e-a8ea-3cad7c47ab03 (44 bytes)
C:\%original file name%.exe.tmp1 (1257 bytes)
Registry activity
The process mscorsvw.exe:172 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\.NETFramework\v2.0.50727\NGenService\State]
"AccumulatedWaitIdleTime" = "1260000"
The process %original file name%.exe:780 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "7B 1D 98 5F 55 BB DE 7C C4 69 B6 57 F0 F6 EC 97"
The process regedit.exe:820 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D1 FA 53 E5 09 5A 16 B0 CE A1 5B C6 CD 43 65 7F"
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]
"ClipSrv" = "%Documents and Settings%\%current user%\Local Settings\ClipSrv.exe"
Dropped PE files
MD5 | File path |
---|---|
23b6045e8e9b9741dfbe4348c5cb1711 | c:\Documents and Settings\"%CurrentUserName%"\Local Settings\ClipSrv.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):
mscorsvw.exe:172
%original file name%.exe:780
regedit.exe:820 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\4$@2.dat (48 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\Crypto\RSA\S-1-5-21-1844237615-1960408961-1801674531-1003\c5b88721db08c824db69d0bbc702beb8_75ed9567-aa58-4c8e-a8ea-3cad7c47ab03 (44 bytes)
C:\%original file name%.exe.tmp1 (1257 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"ClipSrv" = "%Documents and Settings%\%current user%\Local Settings\ClipSrv.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: Adobe Systems, Inc.
Product Name: Flash? Player Installer/Uninstaller
Product Version: 10,1,53,64
Legal Copyright: Copyright ? 1996-2010 Adobe, Inc.
Legal Trademarks: Adobe? Flash? Player
Original Filename: FlashUtil.exe
Internal Name: Adobe? Flash? Player Installer/Uninstaller 10.1
File Version: 10,1,53,64
File Description: Adobe? Flash? Player Installer/Uninstaller 10.1 r53
Comments:
Language: Chinese (Simplified, PRC)
Company Name: Adobe Systems, Inc.Product Name: Flash? Player Installer/UninstallerProduct Version: 10,1,53,64Legal Copyright: Copyright ? 1996-2010 Adobe, Inc.Legal Trademarks: Adobe? Flash? PlayerOriginal Filename: FlashUtil.exeInternal Name: Adobe? Flash? Player Installer/Uninstaller 10.1File Version: 10,1,53,64File Description: Adobe? Flash? Player Installer/Uninstaller 10.1 r53Comments: Language: Chinese (Simplified, PRC)
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 4096 | 22760 | 23040 | 5.09723 | fd253682440509525f234dd489492e19 |
.rdata | 28672 | 996 | 1024 | 3.17402 | d214cdade079311d21d114ce97e26661 |
.data | 32768 | 931 | 512 | 2.46071 | c7417935d5ed609e8cdb29f20ab7bea3 |
.rsrc | 36864 | 1136 | 1536 | 1.84173 | b5ed7b029bc65184d8f3a398fb854e6d |
Dropped from:
Downloaded by:
Similar by SSDeep:
Similar by Lavasoft Polymorphic Checker:
Network Activity
URLs
URL | IP |
---|---|
hxxp://www.gov.toh.info/ghvjf.php?id=030634111D306EDCD1 | 211.234.117.178 |
IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)
Traffic
GET /ghvjf.php?id=030634111D306EDCD1 HTTP/1.1
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Host: VVV.gov.toh.info
Connection: Keep-Alive
Cache-Control: no-cache
HTTP/1.1 404 Not Found
Date: Fri, 12 Dec 2014 07:23:26 GMT
Server: Apache/2.2.15 (CentOS)
Content-Length: 289
Connection: close
Content-Type: text/html; charset=iso-8859-1
<!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 /ghvjf.php was not found on this server.</p>.<hr>.<address>Apache/2.2.15 (CentOS) Server at VVV.gov.toh.info Port 80</address>.</body></html>...
Map
The Trojan connects to the servers at the folowing location(s):
Strings from Dumps
svchost.exe_1596:
.text
.text
`.rdata
`.rdata
@.data
@.data
SSh@C@
SSh@C@
MFC42.DLL
MFC42.DLL
MSVCRT.dll
MSVCRT.dll
_acmdln
_acmdln
WinExec
WinExec
KERNEL32.dll
KERNEL32.dll
USER32.dll
USER32.dll
ADVAPI32.dll
ADVAPI32.dll
HttpQueryInfoA
HttpQueryInfoA
InternetOpenUrlA
InternetOpenUrlA
HttpSendRequestA
HttpSendRequestA
HttpOpenRequestA
HttpOpenRequestA
WININET.dll
WININET.dll
WS2_32.dll
WS2_32.dll
iphlpapi.dll
iphlpapi.dll
SHLWAPI.dll
SHLWAPI.dll
VVV.gov.toh.info
VVV.gov.toh.info
200.115.173.102
200.115.173.102
regedit.exe /s
regedit.exe /s
~dfds3.reg
~dfds3.reg
Windows Registry Editor Version 5.00
Windows Registry Editor Version 5.00
"%s"="%s"
"%s"="%s"
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
WinHttp
WinHttp
%s.tmp1
%s.tmp1
4$@2.dat
4$@2.dat
hXXp://%s:%d/%s.php?id=d%s&ext=%s
hXXp://%s:%d/%s.php?id=d%s&ext=%s
/%s.php?id=d%s&ext=%s
/%s.php?id=d%s&ext=%s
hXXp://%s:%d/%s.php?id=d%s
hXXp://%s:%d/%s.php?id=d%s
%c%c%c%c%c
%c%c%c%c%c
/%s.php?id=d%s
/%s.php?id=d%s
%%temp%%\%u
%%temp%%\%u
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Content-Type: application/x-www-form-urlencoded
Content-Type: application/x-www-form-urlencoded
HTTP/1.1
HTTP/1.1
X-X-X-X-X-X
X-X-X-X-X-X
01-01-01-01-01-01
01-01-01-01-01-01
%c%c%c%c%c%c.exe
%c%c%c%c%c%c.exe
svchost.exe_1596_rwx_00400000_00005000:
.text
.text
`.rdata
`.rdata
@.data
@.data
SSh@C@
SSh@C@
MFC42.DLL
MFC42.DLL
MSVCRT.dll
MSVCRT.dll
_acmdln
_acmdln
WinExec
WinExec
KERNEL32.dll
KERNEL32.dll
USER32.dll
USER32.dll
ADVAPI32.dll
ADVAPI32.dll
HttpQueryInfoA
HttpQueryInfoA
InternetOpenUrlA
InternetOpenUrlA
HttpSendRequestA
HttpSendRequestA
HttpOpenRequestA
HttpOpenRequestA
WININET.dll
WININET.dll
WS2_32.dll
WS2_32.dll
iphlpapi.dll
iphlpapi.dll
SHLWAPI.dll
SHLWAPI.dll
VVV.gov.toh.info
VVV.gov.toh.info
200.115.173.102
200.115.173.102
regedit.exe /s
regedit.exe /s
~dfds3.reg
~dfds3.reg
Windows Registry Editor Version 5.00
Windows Registry Editor Version 5.00
"%s"="%s"
"%s"="%s"
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
WinHttp
WinHttp
%s.tmp1
%s.tmp1
4$@2.dat
4$@2.dat
hXXp://%s:%d/%s.php?id=d%s&ext=%s
hXXp://%s:%d/%s.php?id=d%s&ext=%s
/%s.php?id=d%s&ext=%s
/%s.php?id=d%s&ext=%s
hXXp://%s:%d/%s.php?id=d%s
hXXp://%s:%d/%s.php?id=d%s
%c%c%c%c%c
%c%c%c%c%c
/%s.php?id=d%s
/%s.php?id=d%s
%%temp%%\%u
%%temp%%\%u
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Content-Type: application/x-www-form-urlencoded
Content-Type: application/x-www-form-urlencoded
HTTP/1.1
HTTP/1.1
X-X-X-X-X-X
X-X-X-X-X-X
01-01-01-01-01-01
01-01-01-01-01-01
%c%c%c%c%c%c.exe
%c%c%c%c%c%c.exe