Gen.Variant.Symmi.46792_af14ae2bc2

by malwarelabrobot on November 3rd, 2014 in Malware Descriptions.

Trojan.Win32.VBKryjetor.du (Kaspersky), Gen:Variant.Symmi.46792 (B) (Emsisoft), Gen:Variant.Symmi.46792 (AdAware), Trojan-PSW.Win32.Zbot.6.FD, GenericInjector.YR, BackdoorCaphaw_QKKBAL.YR, TrojanPSWZbot.YR (Lavasoft MAS)
Behaviour: Trojan-PSW, Trojan, Backdoor


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

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Summary
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

MD5: af14ae2bc216207ddfd0d43428c36009
SHA1: 2b71194c4cd0a97e77a20bbf7b59f0151bf6244f
SHA256: 644ff30e76cbc6f1da6cf24f76b6e7feaf323861ff182f3c1b1e684235255cc5
SSDeep: 3072:cDpOlz AglwT9 drTcOK4FpIa2dr4FdYyN00d7qwklnpAIHRKOmioutpe:cDpOl6Az9GZK4J2ep1ulFHXmioSo
Size: 183296 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: PackerUPXCompresorGratuitowwwupxsourceforgenet, UPolyXv05_v6
Company: no certificate found
Created at: 2014-09-21 23:59:44
Analyzed on: WindowsXP SP3 32-bit


Summary:

Trojan-PSW. Trojan program intended for stealing users passwords.

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:1716
%original file name%.exe:1332
uqnou.exe:1964
uqnou.exe:1244

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

Explorer.EXE:532

Mutexes

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

File activity

The process %original file name%.exe:1716 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\tmpd9d1becb.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Ibbufa\uqnou.exe (183 bytes)

Registry activity

The process %original file name%.exe:1716 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "76 07 2F F2 D5 65 23 55 99 30 AE 95 07 CA C5 4F"

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

The process %original file name%.exe:1332 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "20 4E 18 5E 7C 7C 77 74 58 3A DB B7 C9 42 56 F7"

The process uqnou.exe:1964 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BE E1 D5 5E E4 6A 0B 40 DA 88 92 94 9B A2 C7 BB"

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

The process uqnou.exe:1244 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BA AA 8B 22 5E 5C C7 58 E0 3B 9C 48 07 1C 3E 45"

Dropped PE files

MD5 File path
e8cf1fd866a6ab3f14727e40551e7bd4 c:\Documents and Settings\"%CurrentUserName%"\Application Data\Ibbufa\uqnou.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetQueryDataAvailable
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle

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

VersionInfo

Company Name: Tonec Inc.
Product Name: Acronich
Product Version: 5.07.0006
Legal Copyright:
Legal Trademarks:
Original Filename: Bisk.exe
Internal Name: Bisk
File Version: 5.07.0006
File Description: Ultramat unobl
Comments:
Language: Swedish (Sweden)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
UPX0 4096 499712 0 0 d41d8cd98f00b204e9800998ecf8427e
UPX1 503808 172032 171008 5.54283 b85933aefb77b8ea7e02af7e0811eb63
.rsrc 675840 12288 10752 3.27725 fc79a84577e497e173f59619741746bb

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

No activity has been detected.

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Web Traffic was not found.

The Trojan connects to the servers at the folowing location(s):

Explorer.EXE_532_rwx_01E00000_00027000:

.text
`.data
.reloc
hXXp://VVV.google.com/webhp
PR_OpenTCPSocket
gdiplus.dll
GdiplusShutdown
ole32.dll
gdi32.dll
: ;2*8.>
3.#70!2)
x#m`a`cmddt-
6 !26!1'1
7"52),,>
;<)?$*%,
71.(5;4=
(203,2$0
/?./,5 <
:>(<<44=3%
8%/<8/?)?/
%/><!8?>!
HTTP/1.1
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
hXXp://
hXXps://
HTTP/1.
SSSh,4
GetProcessHeap
KERNEL32.dll
SetKeyboardState
ExitWindowsEx
MsgWaitForMultipleObjects
MapVirtualKeyW
GetKeyboardState
OpenWindowStationW
GetProcessWindowStation
CreateWindowStationW
CloseWindowStation
SetProcessWindowStation
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
InternetCrackUrlA
HttpOpenRequestA
HttpAddRequestHeadersA
GetUrlCacheEntryInfoW
HttpAddRequestHeadersW
WININET.dll
OLEAUT32.dll
NETAPI32.dll
6 6&6/656{6
cGlobal\XXX
nspr4.dll
nss3.dll
SysShadow
kernel32.dll
"%s" %s
/c "%s"
%sx.%s
%sx
%Documents and Settings%\%current user%\Application Data\Egyb\fuymi.ily
%Documents and Settings%\%current user%\Application Data\Egyb
fuymi.ily
Global\{80141B1B-C4BC-90CE-AFF1-2C6DDA846005}
%Documents and Settings%\%current user%\Application Data
{166FA93E-7699-06B5-AFF1-2C6DDA846005}


Remove it with Ad-Aware

  1. Click (here) to download and install Ad-Aware Free Antivirus.
  2. Update the definition files.
  3. Run a full scan of your computer.


Manual removal*

  1. Scan a system with an anti-rootkit tool.
  2. Terminate malicious process(es) (How to End a Process With the Task Manager):

    %original file name%.exe:1716
    %original file name%.exe:1332
    uqnou.exe:1964
    uqnou.exe:1244

  3. Delete the original Trojan file.
  4. Delete or disinfect the following files created/modified by the Trojan:

    %Documents and Settings%\%current user%\Local Settings\Temp\tmpd9d1becb.bat (177 bytes)
    %Documents and Settings%\%current user%\Application Data\Ibbufa\uqnou.exe (183 bytes)

  5. Reboot the computer.

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

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