MD5: cc753ddc7789248f48cd800638b7c9e8
SHA1: 2f3a369290349fabeeafd3ae2da71b62c3855b8a
SHA256: fa4cdc1bdffcdd685422c840f6053ad2a2712080c604b170abb885b092b2395e
SSDeep: 12288:X9 LD/aphhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhx:X9MNi
Size: 609568 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: ABCware, Inc.
Created at: 2017-01-11 17:00:09
Analyzed on: Windows7 SP1 32-bit

Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

Process activity

The Trojan creates the following process(es):

%original file name%.exe:3360
stub.exe:3580

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

dllhost.exe:2876
svchost.exe:160

Mutexes

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

File activity

The process %original file name%.exe:3360 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\stub.exe (4744 bytes)

The process dllhost.exe:2876 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\Windows\System32\COM Surrogate (33 bytes)
C:\Users\"%CurrentUserName%"\AppData\Roaming\Microsoft\Windows\GAB0Soyqjnm.dat (308 bytes)

Registry activity

The process %original file name%.exe:3360 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"
"UNCAsIntranet" = "0"

The Trojan deletes the following value(s) in system registry:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"
"IntranetName"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

The process dllhost.exe:2876 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"

[HKLM\SOFTWARE\Microsoft\Tracing\dllhost_RASMANCS]
"ConsoleTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{1U272725-I227-YIYP-GC78-RN76A51W5201}]
"StubPath" = "C:\Windows\system32\COM Surrogate restart"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\dllhost_RASMANCS]
"MaxFileSize" = "1048576"

[HKCU\Software\GAB0Soyqjnm]
"ServerName" = "C:\Windows\system32\COM Surrogate"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad]
"WpadLastNetwork" = "{E549E976-C5F2-4E77-819D-55BC9B7C25BC}"

[HKLM\SOFTWARE\Microsoft\Tracing\dllhost_RASAPI32]
"MaxFileSize" = "1048576"
"FileDirectory" = "%windir%\tracing"
"ConsoleTracingMask" = "4294901760"

[HKCU\Software\Microsoft\Windows\CurrentVersion/run]
"setup" = "setup"

[HKLM\SOFTWARE\Microsoft\Tracing\dllhost_RASMANCS]
"EnableFileTracing" = "0"

[HKCU\Software\GAB0Soyqjnm]
"ServerStarted" = "19/01/2017 11:37:28"

[HKLM\SOFTWARE\Microsoft\Tracing\dllhost_RASMANCS]
"FileTracingMask" = "4294901760"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "46 00 00 00 3C 00 00 00 09 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Tracing\dllhost_RASMANCS]
"FileDirectory" = "%windir%\tracing"

[HKLM\SOFTWARE\Microsoft\Tracing\dllhost_RASAPI32]
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\dllhost_RASMANCS]
"EnableConsoleTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\dllhost_RASAPI32]
"EnableFileTracing" = "0"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"DefaultConnectionSettings" = "46 00 00 00 0C 00 00 00 09 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Tracing\dllhost_RASAPI32]
"EnableConsoleTracing" = "0"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Java" = "C:\Windows\system32\COM Surrogate"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Java" = "C:\Windows\system32\COM Surrogate"

The Trojan deletes the following value(s) in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyOverride"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyServer"
"AutoConfigURL"

The process stub.exe:3580 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKCU\Software\XtremeRAT]
"Mutex" = "GAB0Soyqjnm"

Dropped PE files

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Trojan's file once a user opens a drive's folder in Windows Explorer.

VersionInfo

Company Name:
Product Name: Explorer.exe
Product Version: 1.0.0.0
Legal Copyright: Copyright (c) 2017
Legal Trademarks:
Original Filename: Explorer.exe.exe
Internal Name: Explorer.exe.exe
File Version: 1.0.0.0
File Description: Explorer.exe
Comments:
Language: English (United States)

PE Sections

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL	IP
svrt.zapto.org	191.54.205.240
dns.msftncsi.com	131.107.255.255

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

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

.text

`.data

.rsrc

@.reloc

msvcrt.dll

API-MS-Win-Core-ProcessThreads-L1-1-0.dll

KERNEL32.dll

NTDLL.DLL

API-MS-Win-Security-Base-L1-1-0.dll

API-MS-WIN-Service-Core-L1-1-0.dll

API-MS-WIN-Service-winsvc-L1-1-0.dll

RPCRT4.dll

ole32.dll

ntdll.dll

_amsg_exit

RegCloseKey

RegOpenKeyExW

GetProcessHeap

svchost.pdb

version="5.1.0.0"

name="Microsoft.Windows.Services.SvcHost"

<description>Host Process for Windows Services</description>

<requestedExecutionLevel

Software\Microsoft\Windows NT\CurrentVersion\Svchost

Software\Microsoft\Windows NT\CurrentVersion\MgdSvchost

\PIPE\

Host Process for Windows Services

6.1.7600.16385 (win7_rtm.090713-1255)

svchost.exe

Windows

Operating System

6.1.7600.16385

svchost.exe_160_rwx_10000000_0004D000:

`.rsrc

ServerKeyloggerU

789:;<&'()* ,-./12345

%SERVER%

URLMON.DLL

shell32.dll

hXXp://

advapi32.dll

kernel32.dll

mpr.dll

version.dll

comctl32.dll

gdi32.dll

opengl32.dll

user32.dll

wintrust.dll

msimg32.dll

 juXqhu2.iu

KWindows

TServerKeylogger

GetWindowsDirectoryW

RegOpenKeyExW

RegCreateKeyW

RegCloseKey

RegOpenKeyExA

FindExecutableW

ShellExecuteW

SHDeleteKeyW

URLDownloadToCacheFileW

UnhookWindowsHookEx

SetWindowsHookExW

MapVirtualKeyW

GetKeyboardLayout

GetKeyState

GetKeyboardType

GetKeyboardState

FtpPutFileW

FtpSetCurrentDirectoryW

.idata

.rdata

P.reloc

P.rsrc

URLDb

KERNEL32.DLL

ntdll.dll

oleaut32.dll

shlwapi.dll

wininet.dll

x.html

HKEY_CLASSES_ROOT

HKEY_CURRENT_USER

HKEY_LOCAL_MACHINE

HKEY_USERS

HKEY_CURRENT_CONFIG

[Execute]

KeyDelBackspace

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">

.html

XtremeKeylogger

Software\Microsoft\Windows\CurrentVersion\Run

.functions

icon=shell32.dll,4

shellexecute=

autorun.inf

\Microsoft\Windows\

ÞFAULTBROWSER%

svchost.exe

svrt.zapto.org

{1U272725-I227-YIYP-GC78-RN76A51W5201}

HKCU\Software\Microsoft\Windows\CurrentVersion/run

C:\Wind

PTF.ftpserver.com

ftpuser

dllhost.exe_2876:

.text

`.data

.rsrc

@.reloc

KERNEL32.dll

msvcrt.dll

ole32.dll

ntdll.dll

dllhost.pdb

_wcmdln

_amsg_exit

6.1.7600.16385 (win7_rtm.090713-1255)

dllhost.exe

Windows

Operating System

6.1.7600.16385

dllhost.exe_2876_rwx_10000000_0004D000:

`.rsrc

ServerKeyloggerU

789:;<&'()* ,-./12345

%SERVER%

URLMON.DLL

shell32.dll

hXXp://

advapi32.dll

kernel32.dll

mpr.dll

version.dll

comctl32.dll

gdi32.dll

opengl32.dll

user32.dll

wintrust.dll

msimg32.dll

 juXqhu2.iu

KWindows

TServerKeylogger

GetWindowsDirectoryW

RegOpenKeyExW

RegCreateKeyW

RegCloseKey

RegOpenKeyExA

FindExecutableW

ShellExecuteW

SHDeleteKeyW

URLDownloadToCacheFileW

UnhookWindowsHookEx

SetWindowsHookExW

MapVirtualKeyW

GetKeyboardLayout

GetKeyState

GetKeyboardType

GetKeyboardState

FtpPutFileW

FtpSetCurrentDirectoryW

.idata

.rdata

P.reloc

P.rsrc

URLDb

KERNEL32.DLL

ntdll.dll

oleaut32.dll

shlwapi.dll

wininet.dll

x.html

HKEY_CLASSES_ROOT

HKEY_CURRENT_USER

HKEY_LOCAL_MACHINE

HKEY_USERS

HKEY_CURRENT_CONFIG

[Execute]

KeyDelBackspace

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">

.html

XtremeKeylogger

Software\Microsoft\Windows\CurrentVersion\Run

.functions

icon=shell32.dll,4

shellexecute=

autorun.inf

\Microsoft\Windows\

ÞFAULTBROWSER%

svchost.exe

svrt.zapto.org

{1U272725-I227-YIYP-GC78-RN76A51W5201}

HKCU\Software\Microsoft\Windows\CurrentVersion/run

C:\Wind

PTF.ftpserver.com

ftpuser

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\stub.exe

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. Terminate malicious process(es) (How to End a Process With the Task Manager):
   

   %original file name%.exe:3360
   stub.exe:3580
   

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

   C:\Users\"%CurrentUserName%"\AppData\Local\Temp\stub.exe (4744 bytes)
   C:\Windows\System32\COM Surrogate (33 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Roaming\Microsoft\Windows\GAB0Soyqjnm.dat (308 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):
   

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "Java" = "C:\Windows\system32\COM Surrogate"
   
   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "Java" = "C:\Windows\system32\COM Surrogate"

5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
6. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
   
7. Reboot the computer.
   

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