TrojanPSW.Win32.Zbot.4_f81175ed62 – Adaware

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan-PSW creates the following process(es):

%original file name%.exe:196
exza.exe:3584

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

Explorer.EXE:1948

File activity

The process %original file name%.exe:196 makes changes in the file system.

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

%Documents and Settings%\%current user%\Local Settings\Temp\tmp1c23a52e.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Ahmiz\exza.exe (1615 bytes)

The Trojan-PSW deletes the following file(s):

%Documents and Settings%\%current user%\Application Data\Ahmiz\exza.exe (0 bytes)

Registry activity

The process %original file name%.exe:196 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "98 62 B7 F1 F1 F5 C1 A1 C3 BE 65 23 0B 6D 65 87"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Local AppData" = "%Documents and Settings%\%current user%\Local Settings\Application Data"

The process exza.exe:3584 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "81 E6 A7 34 98 0A F5 A4 4D 3F E5 CA 96 19 99 BD"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Local AppData" = "%Documents and Settings%\%current user%\Local Settings\Application Data"

[HKCU\Software\Microsoft\Woga]
"2c7id9cf" = "38 18 AB EE 7A 16 B8 EE A6 6C B6 6D"

Dropped PE files

MD5	File path
d61558241ce56832a1ed6fddb5728a31	c:\Documents and Settings\"%CurrentUserName%"\Application Data\Ahmiz\exza.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

HttpSendRequestExW
HttpSendRequestExA
InternetWriteFile
InternetReadFileExA
InternetReadFileExW
HttpSendRequestA
HttpSendRequestW
InternetQueryDataAvailable
HttpQueryInfoW
InternetCloseHandle
HttpQueryInfoA
InternetReadFile

The Trojan-PSW installs the following user-mode hooks in CRYPT32.dll:

PFXImportCertStore

The Trojan-PSW installs the following user-mode hooks in USER32.dll:

GetClipboardData
TranslateMessage

The Trojan-PSW installs the following user-mode hooks in Secur32.dll:

UnsealMessage
SealMessage
DeleteSecurityContext

The Trojan-PSW installs the following user-mode hooks in WS2_32.dll:

WSAGetOverlappedResult
WSASend
recv
gethostbyname
WSARecv
send
closesocket
freeaddrinfo
getaddrinfo
GetAddrInfoW

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

LdrLoadDll
NtCreateThread

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):
%original file name%.exe:196
exza.exe:3584
Delete the original Trojan-PSW file.
Delete or disinfect the following files created/modified by the Trojan-PSW:
%Documents and Settings%\%current user%\Local Settings\Temp\tmp1c23a52e.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Ahmiz\exza.exe (1615 bytes)
Reboot the computer.

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

Static Analysis

VersionInfo

Company Name: ?????????? ??????????
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name: OOBEBALN.EXE
File Version: 5.1.2600.5512 (xpsp.080413-2111)
File Description: ??????????? Windows OOBE
Comments:
Language: Language Neutral

Company Name: ?????????? ??????????Product Name: Product Version: Legal Copyright: Legal Trademarks: Original Filename: Internal Name: OOBEBALN.EXEFile Version: 5.1.2600.5512 (xpsp.080413-2111)File Description: ??????????? Windows OOBEComments: Language: Language Neutral

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	304054	304128	5.27319	934a34bee9a32c5e5e466c58acf8fee6
.data	311296	164	512	0.69449	0eda059bcbcc075ce7c0d77fba4dc166
.rdata3	315392	1000	1024	0	0f343b0931126a20f133d67c2b018a3b
.rdata2	319488	1000	1024	0	0f343b0931126a20f133d67c2b018a3b
.rsrc	323584	27064	27136	3.80344	f6d0c56038e861286cccf22f48088a28

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 2
175792878c8b5c77077143dcf61a95c4
64809150da203938a2884fc87efc728f

Network Activity

URLs

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

Strings from Dumps

Explorer.EXE_1948_rwx_023F0000_00047000:

.text

`.data

.reloc

Invalid parameter passed to C runtime function.

gdiplus.dll

GdiplusShutdown

REPORT

0123456789

5$5,545<5

HTTP/1.1

RegDeleteKeyExW

userenv.dll

del "%s"

if exist "%s" goto d

del /F "%s"

http://www.google.com/

http://www.bing.com/

Gjhseov.Icm`l`dl

$*((8-,7>

-&0,3.8

*!7 4)?,

;=<43;'""

~{283)Ryr%2, Ypu452?@kl'#.Nef1&8t_X

pufjwdx.jvh

"7&8"8=' "

m9.td

t.Ht$HHt

ntdll.dll

KERNEL32.dll

ExitWindowsEx

MsgWaitForMultipleObjects

GetKeyboardState

USER32.dll

RegCreateKeyExW

RegCloseKey

RegQueryInfoKeyW

RegDeleteKeyW

RegOpenKeyExW

RegEnumKeyExW

CryptGetKeyParam

CryptImportKey

CryptDestroyKey

ADVAPI32.dll

PathIsURLW

UrlUnescapeA

SHLWAPI.dll

ShellExecuteW

SHELL32.dll

Secur32.dll

ole32.dll

GDI32.dll

WS2_32.dll

PFXImportCertStore

CertDeleteCertificateFromStore

CertOpenSystemStoreW

CertCloseStore

CertEnumCertificatesInStore

CertDuplicateCertificateContext

PFXExportCertStoreEx

CRYPT32.dll

HttpSendRequestExA

HttpQueryInfoA

InternetCrackUrlA

HttpOpenRequestA

HttpEndRequestA

HttpAddRequestHeadersA

WININET.dll

OLEAUT32.dll

NETAPI32.dll

IPHLPAPI.DLL

VERSION.dll

msvcrt.dll

zcÁ

00o0x0

0 0,000<0@0

kernel32.dll

SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\%s

shell32.dll

\StringFileInfo\xx\%s

Wadvapi32.dll

"%s" %s

/c "%s"

%sx.%s

%sx

urlmon.dll

cabinet.dll

%Documents and Settings%\%current user%\Application Data

%Documents and Settings%\%current user%\Local Settings\Application Data

Global\{01E22063-0823-4088-6532-C4CE7D78E7DC}

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps