Gen.Variant.Symmi.19861_6166183cab – Adaware

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:1004
byud.exe:768

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

Explorer.EXE:1684

Mutexes

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

File activity

The process %original file name%.exe:1004 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\tmpc092841b.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Ezliva\byud.exe (229 bytes)

Registry activity

The process %original file name%.exe:1004 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B5 ED 2B 0C 31 28 C6 77 1C 3B 82 87 5A D4 2A E3"

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

[HKCU\Software\Microsoft\Itmig]
"Evme" = "6F B0 3D 32 14 DB E2 AE 7C 79 81 64 61 E0 D6 A7"

The process byud.exe:768 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D8 5D 88 91 B7 08 EA 77 C0 D8 99 65 7D 1D 42 07"

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

Dropped PE files

MD5	File path
778fc0e0bcd4af116828e325383f86b1	c:\Documents and Settings\"%CurrentUserName%"\Application Data\Ezliva\byud.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

PlaySoundW

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

HttpEndRequestW
HttpEndRequestA
HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetSetFilePointer
InternetQueryDataAvailable
HttpOpenRequestW
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle
HttpOpenRequestA

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

PFXImportCertStore

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

SetCursorPos
DefMDIChildProcA
DefFrameProcA
DefDlgProcA
GetClipboardData
DefMDIChildProcW
DefFrameProcW
GetUpdateRgn
RegisterClassA
GetDCEx
ReleaseCapture
SetCapture
DefWindowProcA
CallWindowProcA
GetUpdateRect
PeekMessageA
CallWindowProcW
GetMessagePos
GetCursorPos
EndPaint
BeginPaint
DefWindowProcW
RegisterClassExA
GetMessageA
DefDlgProcW
SwitchDesktop
OpenInputDesktop
RegisterClassExW
RegisterClassW
GetCapture
PeekMessageW
GetMessageW
GetWindowDC
TranslateMessage
GetDC
ReleaseDC

The Trojan installs the following user-mode hooks in ADVAPI32.dll:

CreateProcessAsUserA
CreateProcessAsUserW

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

WSASend
gethostbyname
send
closesocket
getaddrinfo

The Trojan installs the following user-mode hooks in kernel32.dll:

ExitProcess
GetFileAttributesExW

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

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:1004
byud.exe:768
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\tmpc092841b.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Ezliva\byud.exe (229 bytes)
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
UPX0	4096	114688	0	0	d41d8cd98f00b204e9800998ecf8427e
UPX1	118784	229376	226816	5.51224	e107b52f50ed34bd6c485adf0d18cdaf
UPX2	348160	4096	512	1.98775	1a32fc4c748c866578be68a682fcb5a1

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 2
661fcda57e21d37ff2f3628481042c41
d431a6418bdfdf23b19a0f163b0be5ee

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

Explorer.EXE_1684_rwx_021E0000_00042000:

.text

`.data

.reloc

hXXp://VVV.google.com/webhp

_getFirefoxCookie

HTTP/1.1

HTTP/1.0

hXXp://

hXXps://

HTTP/1.

%s, u %s %u u:u:u GMT

HTTP/1.1 200 OK

Date: %s

Content-Length: %u

Expires: %s

Content-Type: %s

GET /favicon.ico HTTP/1.1

; charset=%s

HTTP/1.1 %u %s

Content-Type: %s%s

ID: %s

value_%s

value_%s_%s

%s = "%s";

cit_ffcookie.module

cit_video.module

userenv.dll

del "%s"

if exist "%s" goto d

del /F "%s"

Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)

urlmon.dll

cabinet.dll

hXXp://xxxxxxxx.com/xxxx/xxxx.php

gdiplus.dll

GdiplusShutdown

ole32.dll

gdi32.dll

PR_OpenTCPSocket

,(1 (,#%

,( ,8*-(

*7=.*=-;-

>).500"

!

)*)$,'%3

05> 87=(.

#$%cjgf`9iarCE9>7!

0%u`gvphtv zmydV~

update.exe

config.bin

%s%s%s

%COMMANDSERVER%

hXXp://127.0.0.1:%u/

X-Type: %s

facebook.com

Cookie: %s

Referer: %s

Accept: %s

Accept-Language: %s

Accept-Encoding: %s

SSSh\~

SSSh$l

SSShEl

GetProcessHeap

GetWindowsDirectoryW

CreatePipe

KERNEL32.dll

ExitWindowsEx

MapVirtualKeyW

MsgWaitForMultipleObjects

GetKeyboardLayoutList

GetKeyboardState

OpenWindowStationW

GetProcessWindowStation

CreateWindowStationW

CloseWindowStation

SetProcessWindowStation

SetKeyboardState

USER32.dll

RegOpenKeyExW

RegEnumKeyExW

RegCloseKey

RegCreateKeyW

RegQueryInfoKeyW

RegCreateKeyExW

RegEnumKeyW

ADVAPI32.dll

PathIsURLW

UrlUnescapeA

SHDeleteKeyW

SHLWAPI.dll

ShellExecuteW

SHELL32.dll

Secur32.dll

SetViewportOrgEx

GDI32.dll

WS2_32.dll

PFXImportCertStore

CertDeleteCertificateFromStore

CertOpenSystemStoreW

CertCloseStore

CertEnumCertificatesInStore

CertDuplicateCertificateContext

PFXExportCertStoreEx

CRYPT32.dll

HttpSendRequestExA

HttpQueryInfoA

HttpSendRequestExW

HttpSendRequestW

GetUrlCacheEntryInfoW

HttpAddRequestHeadersW

HttpOpenRequestA

HttpOpenRequestW

HttpEndRequestA

HttpAddRequestHeadersA

HttpSendRequestA

HttpEndRequestW

InternetCrackUrlA

InternetCrackUrlW

WININET.dll

OLEAUT32.dll

NETAPI32.dll

VERSION.dll

WINMM.dll

PSSSSSSh

~'0.EM

:%: :1:7:

7}8J8d8y8

2 2$2(2,202

nspr4.dll

sXXXX

Global\XXX

\StringFileInfo\xx\%s

ntdll.dll

kernel32.dll

"%s" %s

/c "%s"

%sx.%s

%sx

SELECT * FROM %s

chrome.dll

Process: %s

Input: %s

%sd1%

%sd2%

Name: %s

Path: %s

Hash: %s

Time: u.u.u

Company: %s

Product: %s

Version: %s

Software\Microsoft\Windows\CurrentVersion\Uninstall

%u: %s | %s | %s

SysShadow

X-TS-Rule-Name: %s

X-TS-Rule-PatternID: %u

X-TS-BotID: %s

X-TS-Domain: %s

X-TS-SessionID: %s

X-TS-Header-Cookie: %S

X-TS-Header-Referer: %S

X-TS-Header-AcceptEncoding: %S

X-TS-Header-AcceptLanguage: %S

X-TS-Header-UserAgent: %S

Chrome

Firefox

%Documents and Settings%\%current user%\Application Data\Ertoa\ozoz.kyu

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

ozoz.kyu

Global\{15235476-CA38-B21B-EAE6-AF505C38532D}

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

{8358E653-781D-2460-EAE6-AF505C38532D}

%Documents and Settings%\%current user%\Application Data\Iwuve\heguu.adt

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

heguu.adt

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps