Trojan.Microfake.D_a24769997a – Adaware

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

regsvr32.exe:1108
hrl1.tmp:1144

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

ksimoa.exe:320

Mutexes

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

File activity

The process regsvr32.exe:1108 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\hrl1.tmp (1620 bytes)

The process ksimoa.exe:320 makes changes in the file system.

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

C:\RCX2.tmp (18204 bytes)
%System%\hra33.dll (7 bytes)

The Trojan deletes the following file(s):

%System%\hra33.dll (0 bytes)

The process hrl1.tmp:1144 makes changes in the file system.

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

%System%\ksimoa.exe (2105 bytes)

Registry activity

The process regsvr32.exe:1108 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D7 62 38 FF BE 65 46 1F 5B 67 50 95 38 98 48 D1"

Dropped PE files

MD5	File path
9aeea3f6187cafd0d2bd5822ae3d3860	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\SOFTWARE.LOG
9aeea3f6187cafd0d2bd5822ae3d3860	c:\WINDOWS\system32\ksimoa.exe

HOSTS file anomalies

The Trojan modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses. The modified file is 734 bytes in size. The following strings are added to the hosts file listed below:

127.0.0.1	www.Brenz.pl

Rootkit activity

The Trojan installs the following user-mode hooks in ntdll.dll:

NtQueryInformationProcess
ZwOpenFile
NtDeviceIoControlFile
NtCreateProcessEx
NtCreateProcess
NtCreateFile

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*

Scan a system with an anti-rootkit tool.
Terminate malicious process(es) (How to End a Process With the Task Manager):
regsvr32.exe:1108
hrl1.tmp:1144
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\hrl1.tmp (1620 bytes)
C:\RCX2.tmp (18204 bytes)
%System%\hra33.dll (7 bytes)
%System%\ksimoa.exe (2105 bytes)
Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
Reboot the computer.

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

Static Analysis

VersionInfo

No information is available.

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	2860	3072	3.84485	c9b6b9fbded3d4764666702b145428d1
.rdata	8192	2505	2560	3.36056	6951ee1a0ff3a7f5a44727b4713506a3
.data	12288	672	0	0	d41d8cd98f00b204e9800998ecf8427e
.rsrc	16384	339604	339968	5.15033	49c9a4aaea9afb033989a576ea7c65fa
.reloc	356352	494	512	3.52939	cfa8d04dd000bb30ab126902176ed40d

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

regsvr32.exe_1108:

.text

`.data

.rsrc

msvcrt.dll

ADVAPI32.dll

KERNEL32.dll

NTDLL.DLL

USER32.dll

ole32.dll

regsvr32.pdb

_wcmdln

RegCloseKey

RegOpenKeyExW

Excessive # of DLL's on cmdline

5.1.2600.5512 (xpsp.080413-2105)

REGSVR32.EXE

Windows

Operating System

5.1.2600.5512

Usage: regsvr32 [/u] [/s] [/n] [/i[:cmdline]] dllname

Call DllInstall passing it an optional [cmdline]; when used with /u calls dll uninstall

Unrecognized flag: %1"Extra argument on command line: This command is only valid when an OLE Custom Control project is open.

LoadLibrary("%1") failed - ,%1 was loaded, but the %2 entry point was not found.

%1 does not appear to be a .DLL or .OCX file.V%1 was loaded, but the %2 entry point was not found.

OleUninitialize failed.["%1" is not an executable file and no registration

ksimoa.exe_320:

.text

.rdata

@.data

.rsrc

USER32.dll

ADVAPI32.dll

SHELL32.dll

WS2_32.dll

WINMM.dll

GET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htm

RegCloseKey

RegOpenKeyExA

RegOpenKeyA

ShellExecuteA

MFC42.DLL

MSVCRT.dll

_acmdln

WinExec

KERNEL32.dll

fei9988.3322.org:8080

564528578564528578

%u.%u.%u.%u

hra%u.dll

iexplore.exe

stf%c%c%c%c%c.exe

PlusCtrl.dll

kernel32.dll

SOFTWARE.LOG

%c%c%c%c%c%c.exe

%u MB

%u MHz

Windows NT

Windows 7

Windows 2008

Windows Vista

Windows 2003

Windows XP

Windows 2000

SOFTWARE\Microsoft\Windows NT\CurrentVersion

\Program Files\Internet Explorer\iexplore.exe

#0%s!

%s/%s

GET %s HTTP/1.1

Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*

User-Agent:Mozilla/4.0 (compatible; MSIE %d.0; Windows NT %d.1; SV1)

Host: %s:%d

Host: %s

User-Agent:Mozilla/5.0 (X11; U; Linux i686; en-US; re:1.4.0) Gecko/20080808 Firefox/%d.0

Referer: hXXp://%s:80/hXXp://%s

%s %s%s

User-Agent:Mozilla/4.0 (compatible; MSIE %d.00; Windows NT %d.0; MyIE 3.01)

User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)

%d.%d.%d.%d

192.168.1.244

`.rdata

@.reloc

SHLWAPI.dll

lpk.dll

6Tg%C

ADVAPI32.DLL

\USERINIT.EXE

%s:*:enabled:@shell32.dll,-1

SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer

ru.brans.pl

core.ircgalaxy.pl

NICK bpslwrax

SFC.DLL

SFC_OS.DLL

USER32.DLL

SHLWAPI.DLL

WSOCK32.DLL

WININET.DLL

%.6x . . :%c%.8x%x %s

JOIN

127.0.0.1 jL.chura.pl

#

KERNEL32.DLL

windowsupdate

drweb

1.fzTf

_Mo/Ã¿

.XF>n

OyQ

.uG}q

cmd /c RD /s /q "%s"

"%s" a -r -ep1"%s" "%s" "%s\lpk.dll"

"%s" x "%s" *.exe "%s\"

cmd /c %s vb "%s" lpk.dll|find /i "lpk.dll"

rar.exe

1, 0, 0, 1

server.EXE

ksimoa.exe_320_rwx_00415000_00005000:

ADVAPI32.DLL

\USERINIT.EXE

%s:*:enabled:@shell32.dll,-1

SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer

ru.brans.pl

core.ircgalaxy.pl

NICK bpslwrax

SFC.DLL

SFC_OS.DLL

USER32.DLL

SHLWAPI.DLL

WSOCK32.DLL

WININET.DLL

%.6x . . :%c%.8x%x %s

JOIN

127.0.0.1 jL.chura.pl

#

KERNEL32.DLL

windowsupdate

drweb

ksimoa.exe_320_rwx_00450000_00001000:

OyQ

.uG}q

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps