Trojan.Win32.MicroFake.ba (Kaspersky), Trojan.Microfake.D (B) (Emsisoft), Trojan.Microfake.D (AdAware), DDoSNitol.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: 2d0a1a8af699c69a8320c532989f0470
SHA1: 8019b06f9911540be45f568659b45c2beb551096
SHA256: f74c641f092a63d5ee2cf2a39d8cee392f3fed6d30e4bdefabec0e20eb6cd62c
SSDeep: 1536:omItxwjjK7lp27GjV3P1YIl3oyzrmg7iXH2HIR wtRVn3G:o9qjm7l4yzr9 XDswtr3G
Size: 74752 bytes
File type: DLL
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: CodecPerformer
Created at: 2010-06-08 12:59:36
Analyzed on: WindowsXP 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):
regsvr32.exe:580
hrl1.tmp:1244
The Trojan injects its code into the following process(es):
osiism.exe:2024
File activity
The process regsvr32.exe:580 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 (67 bytes)
The process osiism.exe:2024 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
C:\RCX2.tmp (15004 bytes)
%System%\hra33.dll (7 bytes)
The Trojan deletes the following file(s):
%System%\hra33.dll (0 bytes)
The process hrl1.tmp:1244 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%System%\osiism.exe (601 bytes)
Registry activity
The process regsvr32.exe:580 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "2D BC CA 7F 5E 0E 0E AA 41 A5 26 14 46 59 C6 F8"
Dropped PE files
MD5 | File path |
---|---|
3959cbbef365f8e24c44385c31c03fc1 | c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\SOFTWARE.LOG |
3959cbbef365f8e24c44385c31c03fc1 | c:\WINDOWS\system32\osiism.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:580
hrl1.tmp:1244 - 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 (67 bytes)
C:\RCX2.tmp (15004 bytes)
%System%\hra33.dll (7 bytes)
%System%\osiism.exe (601 bytes) - Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
- Reboot the computer.
Static Analysis
VersionInfo
No information is available.
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 | 67220 | 67584 | 4.85738 | 02f6ac1796bdde9389307f926c0a5a94 |
.reloc | 86016 | 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_580:
.text
.text
`.data
`.data
.rsrc
.rsrc
msvcrt.dll
msvcrt.dll
ADVAPI32.dll
ADVAPI32.dll
KERNEL32.dll
KERNEL32.dll
NTDLL.DLL
NTDLL.DLL
USER32.dll
USER32.dll
ole32.dll
ole32.dll
regsvr32.pdb
regsvr32.pdb
_wcmdln
_wcmdln
RegCloseKey
RegCloseKey
RegOpenKeyExW
RegOpenKeyExW
Excessive # of DLL's on cmdline
Excessive # of DLL's on cmdline
5.1.2600.5512 (xpsp.080413-2105)
5.1.2600.5512 (xpsp.080413-2105)
REGSVR32.EXE
REGSVR32.EXE
Windows
Windows
Operating System
Operating System
5.1.2600.5512
5.1.2600.5512
Usage: regsvr32 [/u] [/s] [/n] [/i[:cmdline]] dllname
Usage: regsvr32 [/u] [/s] [/n] [/i[:cmdline]] dllname
Call DllInstall passing it an optional [cmdline]; when used with /u calls dll uninstall
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.
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.
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.
%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
OleUninitialize failed.["%1" is not an executable file and no registration
osiism.exe_2024:
.text
.text
`.rdata
`.rdata
@.data
@.data
.rsrc
.rsrc
USER32.dll
USER32.dll
ADVAPI32.dll
ADVAPI32.dll
SHELL32.dll
SHELL32.dll
WS2_32.dll
WS2_32.dll
WINMM.dll
WINMM.dll
GET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htm
GET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htmGET ^&&%$%$^%$#^&**(*((&*^%$##$%^&*(*&^%$%^&*.htm
RegCloseKey
RegCloseKey
RegOpenKeyExA
RegOpenKeyExA
RegOpenKeyA
RegOpenKeyA
ShellExecuteA
ShellExecuteA
MFC42.DLL
MFC42.DLL
MSVCRT.dll
MSVCRT.dll
_acmdln
_acmdln
WinExec
WinExec
KERNEL32.dll
KERNEL32.dll
dingtao333.3322.org:1
dingtao333.3322.org:1
-2146744890-2146744890
-2146744890-2146744890
kernel32.dll
kernel32.dll
%u.%u.%u.%u
%u.%u.%u.%u
hra%u.dll
hra%u.dll
iexplore.exe
iexplore.exe
stf%c%c%c%c%c.exe
stf%c%c%c%c%c.exe
PlusCtrl.dll
PlusCtrl.dll
SOFTWARE.LOG
SOFTWARE.LOG
%c%c%c%c%c%c.exe
%c%c%c%c%c%c.exe
%u MB
%u MB
%u MHz
%u MHz
Windows NT
Windows NT
Windows 7
Windows 7
Windows 2008
Windows 2008
Windows Vista
Windows Vista
Windows 2003
Windows 2003
Windows XP
Windows XP
Windows 2000
Windows 2000
SOFTWARE\Microsoft\Windows NT\CurrentVersion
SOFTWARE\Microsoft\Windows NT\CurrentVersion
\Program Files\Internet Explorer\iexplore.exe
\Program Files\Internet Explorer\iexplore.exe
#0%s!
#0%s!
%s/%s
%s/%s
GET %s HTTP/1.1
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, */*
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)
User-Agent:Mozilla/4.0 (compatible; MSIE %d.0; Windows NT %d.1; SV1)
Host: %s:%d
Host: %s:%d
Host: %s
Host: %s
User-Agent:Mozilla/5.0 (X11; U; Linux i686; en-US; re:1.4.0) Gecko/20080808 Firefox/%d.0
User-Agent:Mozilla/5.0 (X11; U; Linux i686; en-US; re:1.4.0) Gecko/20080808 Firefox/%d.0
Referer: http://%s:80/http://%s
Referer: http://%s:80/http://%s
%s %s%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 %d.00; Windows NT %d.0; MyIE 3.01)
User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
%d.%d.%d.%d
%d.%d.%d.%d
192.168.1.244
192.168.1.244
@.reloc
@.reloc
SHLWAPI.dll
SHLWAPI.dll
lpk.dll
lpk.dll
a%f-i
a%f-i
m.Hr`OJ
m.Hr`OJ
cmd /c RD /s /q "%s"
cmd /c RD /s /q "%s"
"%s" a -r -ep1"%s" "%s" "%s\lpk.dll"
"%s" a -r -ep1"%s" "%s" "%s\lpk.dll"
"%s" x "%s" *.exe "%s\"
"%s" x "%s" *.exe "%s\"
cmd /c %s vb "%s" lpk.dll|find /i "lpk.dll"
cmd /c %s vb "%s" lpk.dll|find /i "lpk.dll"
rar.exe
rar.exe
1, 0, 0, 1
1, 0, 0, 1
server.EXE
server.EXE