HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.GenericKD.4166976 (B) (Emsisoft), Trojan.GenericKD.4166976 (AdAware), Backdoor.Win32.Xtrat.FD, GenericAutorunWorm.YR, GenericInjector.YR (Lavasoft MAS)Behaviour: Trojan, Backdoor, Worm, WormAutorun
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
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).
Dynamic Analysis
Payload
Behaviour | Description |
---|---|
WormAutorun | 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. |
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
MD5 | File path |
---|---|
43bf064d936d05c58ea5f87d9f08d2d8 | c:\Users\"%CurrentUserName%"\AppData\Local\Temp\stub.exe |
43bf064d936d05c58ea5f87d9f08d2d8 | c:\Windows\System32\COM Surrogate |
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.
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*
- Terminate malicious process(es) (How to End a Process With the Task Manager):
%original file name%.exe:3360
stub.exe:3580 - Delete the original Trojan file.
- 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) - 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" - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.
Static Analysis
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)
Company Name: Product Name: Explorer.exeProduct Version: 1.0.0.0Legal Copyright: Copyright (c) 2017Legal Trademarks: Original Filename: Explorer.exe.exeInternal Name: Explorer.exe.exeFile Version: 1.0.0.0File Description: Explorer.exeComments: Language: English (United States)
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 8192 | 572144 | 572416 | 4.0741 | 2a54b95e29eeb711b694330bc30be63b |
.rsrc | 581632 | 1484 | 1536 | 2.84898 | 612d04a9b616d3ced64b4f0eaeefb4e0 |
.reloc | 589824 | 12 | 512 | 0.070639 | 1f525cab2409333b868f23dcf1400509 |
Dropped from:
Downloaded by:
Similar by SSDeep:
Similar by Lavasoft Polymorphic Checker:
Network Activity
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
Map
The Trojan connects to the servers at the folowing location(s):
Strings from Dumps
svchost.exe_160:
.text
.text
`.data
`.data
.rsrc
.rsrc
@.reloc
@.reloc
msvcrt.dll
msvcrt.dll
API-MS-Win-Core-ProcessThreads-L1-1-0.dll
API-MS-Win-Core-ProcessThreads-L1-1-0.dll
KERNEL32.dll
KERNEL32.dll
NTDLL.DLL
NTDLL.DLL
API-MS-Win-Security-Base-L1-1-0.dll
API-MS-Win-Security-Base-L1-1-0.dll
API-MS-WIN-Service-Core-L1-1-0.dll
API-MS-WIN-Service-Core-L1-1-0.dll
API-MS-WIN-Service-winsvc-L1-1-0.dll
API-MS-WIN-Service-winsvc-L1-1-0.dll
RPCRT4.dll
RPCRT4.dll
ole32.dll
ole32.dll
ntdll.dll
ntdll.dll
_amsg_exit
_amsg_exit
RegCloseKey
RegCloseKey
RegOpenKeyExW
RegOpenKeyExW
GetProcessHeap
GetProcessHeap
svchost.pdb
svchost.pdb
version="5.1.0.0"
version="5.1.0.0"
name="Microsoft.Windows.Services.SvcHost"
name="Microsoft.Windows.Services.SvcHost"
Host Process for Windows Services
Host Process for Windows Services
Software\Microsoft\Windows NT\CurrentVersion\Svchost
Software\Microsoft\Windows NT\CurrentVersion\Svchost
Software\Microsoft\Windows NT\CurrentVersion\MgdSvchost
Software\Microsoft\Windows NT\CurrentVersion\MgdSvchost
\PIPE\
\PIPE\
Host Process for Windows Services
Host Process for Windows Services
6.1.7600.16385 (win7_rtm.090713-1255)
6.1.7600.16385 (win7_rtm.090713-1255)
svchost.exe
svchost.exe
Windows
Windows
Operating System
Operating System
6.1.7600.16385
6.1.7600.16385
svchost.exe_160_rwx_10000000_0004D000:
`.rsrc
`.rsrc
ServerKeyloggerU
ServerKeyloggerU
789:;
789:;
%SERVER%
%SERVER%
URLMON.DLL
URLMON.DLL
shell32.dll
shell32.dll
hXXp://
hXXp://
advapi32.dll
advapi32.dll
kernel32.dll
kernel32.dll
mpr.dll
mpr.dll
version.dll
version.dll
comctl32.dll
comctl32.dll
gdi32.dll
gdi32.dll
opengl32.dll
opengl32.dll
user32.dll
user32.dll
wintrust.dll
wintrust.dll
msimg32.dll
msimg32.dll
juXqhu2.iu
juXqhu2.iu
KWindows
KWindows
TServerKeylogger
TServerKeylogger
GetWindowsDirectoryW
GetWindowsDirectoryW
RegOpenKeyExW
RegOpenKeyExW
RegCreateKeyW
RegCreateKeyW
RegCloseKey
RegCloseKey
RegOpenKeyExA
RegOpenKeyExA
FindExecutableW
FindExecutableW
ShellExecuteW
ShellExecuteW
SHDeleteKeyW
SHDeleteKeyW
URLDownloadToCacheFileW
URLDownloadToCacheFileW
UnhookWindowsHookEx
UnhookWindowsHookEx
SetWindowsHookExW
SetWindowsHookExW
MapVirtualKeyW
MapVirtualKeyW
GetKeyboardLayout
GetKeyboardLayout
GetKeyState
GetKeyState
GetKeyboardType
GetKeyboardType
GetKeyboardState
GetKeyboardState
FtpPutFileW
FtpPutFileW
FtpSetCurrentDirectoryW
FtpSetCurrentDirectoryW
.idata
.idata
.rdata
.rdata
P.reloc
P.reloc
P.rsrc
P.rsrc
URLDb
URLDb
KERNEL32.DLL
KERNEL32.DLL
ntdll.dll
ntdll.dll
oleaut32.dll
oleaut32.dll
shlwapi.dll
shlwapi.dll
wininet.dll
wininet.dll
x.html
x.html
HKEY_CLASSES_ROOT
HKEY_CLASSES_ROOT
HKEY_CURRENT_USER
HKEY_CURRENT_USER
HKEY_LOCAL_MACHINE
HKEY_LOCAL_MACHINE
HKEY_USERS
HKEY_USERS
HKEY_CURRENT_CONFIG
HKEY_CURRENT_CONFIG
[Execute]
[Execute]
KeyDelBackspace
KeyDelBackspace
.html
.html
XtremeKeylogger
XtremeKeylogger
Software\Microsoft\Windows\CurrentVersion\Run
Software\Microsoft\Windows\CurrentVersion\Run
.functions
.functions
icon=shell32.dll,4
icon=shell32.dll,4
shellexecute=
shellexecute=
autorun.inf
autorun.inf
\Microsoft\Windows\
\Microsoft\Windows\
ÞFAULTBROWSER%
ÞFAULTBROWSER%
svchost.exe
svchost.exe
svrt.zapto.org
svrt.zapto.org
{1U272725-I227-YIYP-GC78-RN76A51W5201}
{1U272725-I227-YIYP-GC78-RN76A51W5201}
HKCU\Software\Microsoft\Windows\CurrentVersion/run
HKCU\Software\Microsoft\Windows\CurrentVersion/run
C:\Wind
C:\Wind
PTF.ftpserver.com
PTF.ftpserver.com
ftpuser
ftpuser
dllhost.exe_2876:
.text
.text
`.data
`.data
.rsrc
.rsrc
@.reloc
@.reloc
KERNEL32.dll
KERNEL32.dll
msvcrt.dll
msvcrt.dll
ole32.dll
ole32.dll
ntdll.dll
ntdll.dll
dllhost.pdb
dllhost.pdb
_wcmdln
_wcmdln
_amsg_exit
_amsg_exit
6.1.7600.16385 (win7_rtm.090713-1255)
6.1.7600.16385 (win7_rtm.090713-1255)
dllhost.exe
dllhost.exe
Windows
Windows
Operating System
Operating System
6.1.7600.16385
6.1.7600.16385
dllhost.exe_2876_rwx_10000000_0004D000:
`.rsrc
`.rsrc
ServerKeyloggerU
ServerKeyloggerU
789:;
789:;
%SERVER%
%SERVER%
URLMON.DLL
URLMON.DLL
shell32.dll
shell32.dll
hXXp://
hXXp://
advapi32.dll
advapi32.dll
kernel32.dll
kernel32.dll
mpr.dll
mpr.dll
version.dll
version.dll
comctl32.dll
comctl32.dll
gdi32.dll
gdi32.dll
opengl32.dll
opengl32.dll
user32.dll
user32.dll
wintrust.dll
wintrust.dll
msimg32.dll
msimg32.dll
juXqhu2.iu
juXqhu2.iu
KWindows
KWindows
TServerKeylogger
TServerKeylogger
GetWindowsDirectoryW
GetWindowsDirectoryW
RegOpenKeyExW
RegOpenKeyExW
RegCreateKeyW
RegCreateKeyW
RegCloseKey
RegCloseKey
RegOpenKeyExA
RegOpenKeyExA
FindExecutableW
FindExecutableW
ShellExecuteW
ShellExecuteW
SHDeleteKeyW
SHDeleteKeyW
URLDownloadToCacheFileW
URLDownloadToCacheFileW
UnhookWindowsHookEx
UnhookWindowsHookEx
SetWindowsHookExW
SetWindowsHookExW
MapVirtualKeyW
MapVirtualKeyW
GetKeyboardLayout
GetKeyboardLayout
GetKeyState
GetKeyState
GetKeyboardType
GetKeyboardType
GetKeyboardState
GetKeyboardState
FtpPutFileW
FtpPutFileW
FtpSetCurrentDirectoryW
FtpSetCurrentDirectoryW
.idata
.idata
.rdata
.rdata
P.reloc
P.reloc
P.rsrc
P.rsrc
URLDb
URLDb
KERNEL32.DLL
KERNEL32.DLL
ntdll.dll
ntdll.dll
oleaut32.dll
oleaut32.dll
shlwapi.dll
shlwapi.dll
wininet.dll
wininet.dll
x.html
x.html
HKEY_CLASSES_ROOT
HKEY_CLASSES_ROOT
HKEY_CURRENT_USER
HKEY_CURRENT_USER
HKEY_LOCAL_MACHINE
HKEY_LOCAL_MACHINE
HKEY_USERS
HKEY_USERS
HKEY_CURRENT_CONFIG
HKEY_CURRENT_CONFIG
[Execute]
[Execute]
KeyDelBackspace
KeyDelBackspace
.html
.html
XtremeKeylogger
XtremeKeylogger
Software\Microsoft\Windows\CurrentVersion\Run
Software\Microsoft\Windows\CurrentVersion\Run
.functions
.functions
icon=shell32.dll,4
icon=shell32.dll,4
shellexecute=
shellexecute=
autorun.inf
autorun.inf
\Microsoft\Windows\
\Microsoft\Windows\
ÞFAULTBROWSER%
ÞFAULTBROWSER%
svchost.exe
svchost.exe
svrt.zapto.org
svrt.zapto.org
{1U272725-I227-YIYP-GC78-RN76A51W5201}
{1U272725-I227-YIYP-GC78-RN76A51W5201}
HKCU\Software\Microsoft\Windows\CurrentVersion/run
HKCU\Software\Microsoft\Windows\CurrentVersion/run
C:\Wind
C:\Wind
PTF.ftpserver.com
PTF.ftpserver.com
ftpuser
ftpuser
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\stub.exe
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\stub.exe