Trojan.GenericKD.1979310_d2c0c288e5 – Adaware

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

yqgya.exe:3092
yqgya.exe:3988
%original file name%.exe:2568
%original file name%.exe:3520

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

Explorer.EXE:1948

Mutexes

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

File activity

The process %original file name%.exe:3520 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\tmp819af28a.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Reyb\yqgya.exe (205 bytes)

Registry activity

The process yqgya.exe:3092 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "EF 5A BD CB 7D C0 8E 3C 99 97 43 0F 8A 5F 81 6C"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1416161832"
"Name" = "yqgya.exe"

The process yqgya.exe:3988 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "43 90 A2 7D C0 C9 0F 49 3C 06 83 F0 99 CD 71 83"

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

The process %original file name%.exe:2568 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "97 9B B5 55 49 1F EE 32 42 17 AB 03 FC E4 AE F9"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1416161832"
"Name" = "%original file name%.exe"

The process %original file name%.exe:3520 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "24 B4 3E 49 BE 1B 7E 0B EF 8D 37 0B 20 B6 4A 89"

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

Dropped PE files

MD5	File path
16e0b0a44e70efa761ee3da91bff25fd	c:\Documents and Settings\"%CurrentUserName%"\Application Data\Reyb\yqgya.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

HttpSendRequestExW
HttpSendRequestExA
InternetReadFileExA
HttpSendRequestA
HttpSendRequestW
InternetQueryDataAvailable
InternetCloseHandle
HttpQueryInfoA
InternetReadFile

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 WS2_32.dll:

WSASend
send
closesocket

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

GetFileAttributesExW

The Trojan 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):
yqgya.exe:3092
yqgya.exe:3988
%original file name%.exe:2568
%original file name%.exe:3520
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\tmp819af28a.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Reyb\yqgya.exe (205 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:
File Version:
File Description:
Comments:
Language: Language Neutral

Company Name: Product Name: Product Version: Legal Copyright: Legal Trademarks: Original Filename: Internal Name: File Version: File Description: Comments: Language: Language Neutral

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	67383	67584	4.61653	74bf39798a2c13ec8e8d5560e9446157
.rdata	73728	22528	22528	3.88013	0424ab33c34fb712ba50528c092c27bb
.data	98304	18780	7680	4.06853	e3b3000318ab55f2bd728d57b5bb5761
.rsrc	118784	105472	105472	5.53021	92484947cbfa47c09a4dc957dd26b215

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

Explorer.EXE_1948_rwx_01100000_00027000:

.text

`.data

.reloc

PR_OpenTCPSocket

hXXp://VVV.google.com/webhp

gdiplus.dll

GdiplusShutdown

ole32.dll

gdi32.dll

,127!' ./9

5/ -?9/#$

./.-#**:

6 !26!1'1

7"52),,>

, >(3=2;

&;1"&1!7!1

;1 "?&! ?

c,%udcvpdxv ~iydjGBT\YGmTRL[ZMI_

7.>.3; `

1:,0/2$7

?$6 39 ~

HTTP/1.1

hXXp://

hXXps://

HTTP/1.

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

SSShlD

GetProcessHeap

KERNEL32.dll

ExitWindowsEx

OpenWindowStationW

GetProcessWindowStation

CreateWindowStationW

CloseWindowStation

SetProcessWindowStation

GetKeyboardState

MapVirtualKeyW

SetKeyboardState

MsgWaitForMultipleObjects

USER32.dll

RegOpenKeyExW

RegEnumKeyExW

RegCloseKey

RegCreateKeyExW

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

HttpSendRequestA

GetUrlCacheEntryInfoW

HttpAddRequestHeadersW

HttpAddRequestHeadersA

InternetCrackUrlA

HttpOpenRequestA

WININET.dll

OLEAUT32.dll

NETAPI32.dll

>">->3>?>

5S5C5N5Z5

nspr4.dll

cGlobal\XXX

SysShadow

e.dat

kernel32.dll

"%s" %s

/c "%s"

%sx.%s

%sx

%Documents and Settings%\%current user%\Application Data\Leapy\koda.bel

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

koda.bel

Global\{97680508-2EE3-FEC9-427A-1554D28646F0}

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

{0113B72D-9CC6-68B2-427A-1554D28646F0}

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps