Gen.Variant.Kazy.290327_00c92330a6

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

regedit.exe:596
%original file name%.exe:1660

The Trojan injects its code into the following process(es):

svchost.exe:1068

Mutexes

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

File activity

The process %original file name%.exe:1660 makes changes in the file system.

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

C:\%original file name%.exe.tmp1 (1257 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)
%Documents and Settings%\%current user%\Local Settings\Temp\4$@2.dat (48 bytes)

Registry activity

The process regedit.exe:596 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "31 B4 FC 7D 2E 89 E9 5F 8A 41 6E 09 40 9F F8 4B"

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]
"dmadmin" = "%Documents and Settings%\%current user%\Local Settings\dmadmin.exe"

The process %original file name%.exe:1660 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8F 1A 2A 68 C7 65 BA 33 6E 8E 1C 6E 29 32 AA 40"

Dropped PE files

MD5	File path
94ad4e289d32adad85f9bfc51f17de26	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\dmadmin.exe

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):

   regedit.exe:596
   %original file name%.exe:1660
   

2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:

   C:\%original file name%.exe.tmp1 (1257 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)
   %Documents and Settings%\%current user%\Local Settings\Temp\4$@2.dat (48 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "dmadmin" = "%Documents and Settings%\%current user%\Local Settings\dmadmin.exe"

5. Reboot the computer.
   

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

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: Language Neutral

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: Language Neutral

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	22760	23040	5.09259	aba8e8dab690a70fa859820559290c58
.rdata	28672	996	1024	3.17402	d214cdade079311d21d114ce97e26661
.data	32768	931	512	2.46079	3c2e93764b0899d8d0d2333a839b7cd0
.rsrc	36864	1136	1536	1.84173	b5ed7b029bc65184d8f3a398fb854e6d

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps

svchost.exe_1068:

.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