HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Inject.ea (v) (VIPRE), Worm.Win32.Dorkbot!IK (Emsisoft), Trojan-Downloader.Win32.Moure.FD, Trojan.Win32.Swrort.3.FD, GenericAutorunWorm.YR (Lavasoft MAS)Behaviour: Trojan-Downloader, Trojan, Worm, WormAutorun
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: e0fdf991b937cd98b3e49c7a33d4fed0
SHA1: 8137a8fe8fbcb82c86b07940a67c408a8d3f1641
SHA256: 314c3c16f1381c59f75269a008ab52682e531faabbf30acf2470aab1fabd1169
SSDeep: 6144:RskrkHbZQtC7tFDeXZYru4eVMRfeBoZe4qDkD:RfrgZQt2tFFpCMR2CZ8D
Size: 1738240 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: BorlandDelphi30, UPolyXv05_v6
Company: QuickSet
Created at: 1995-09-06 02:29:20
Analyzed on: WindowsXP SP3 32-bit
Summary: Trojan-Downloader. Trojan program, which downloads files from the Internet without user's notice and executes them.
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-Downloader's file once a user opens a drive's folder in Windows Explorer. |
Process activity
The Trojan-Downloader creates the following process(es):
%original file name%.exe:57348
%original file name%.exe:1668
msiexec.exe:57372
The Trojan-Downloader injects its code into the following process(es):
wuauclt.exe:57396
File activity
The process %original file name%.exe:57348 makes changes in the file system.
The Trojan-Downloader creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\01.tmp (11518 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\_install_\msiexec.exe (82 bytes)
The Trojan-Downloader deletes the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\01.tmp (0 bytes)
The process wuauclt.exe:57396 makes changes in the file system.
The Trojan-Downloader creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\EFJPWDEO\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OLYBWHAV\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\7O2WSRHZ\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\H3UHZRWT\desktop.ini (67 bytes)
%Documents and Settings%\All Users\Local Settings\Temp\cccwmusf.scr (2104 bytes)
Registry activity
The process %original file name%.exe:57348 makes changes in the system registry.
The Trojan-Downloader creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "AC 0F A3 FE EF A8 72 74 9D DC 54 A4 15 30 F8 C3"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software]
"ImageBase" = "8B 98 CE 3E 41 3E 3E 3E 42 3E 3E 3E 3D 3D 3E 3E"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\_install_]
"msiexec.exe" = "msiexec"
[HKLM\SOFTWARE\Microsoft]
"0000000B" = "50 4B 03 04 00 EA 00 00 30 71 00 00 BC FC C2 2B"
The Trojan-Downloader modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"
The Trojan-Downloader modifies IE settings for security zones to map all urls to the Intranet Zone:
"IntranetName" = "1"
The Trojan-Downloader modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:
"UNCAsIntranet" = "1"
The process %original file name%.exe:1668 makes changes in the system registry.
The Trojan-Downloader creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "65 38 46 65 82 C3 98 25 96 FB 89 D8 CE B3 C6 AA"
The process wuauclt.exe:57396 makes changes in the system registry.
The Trojan-Downloader creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 13 00 00 00 01 00 00 00 00 00 00 00"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
[HKCU\Software]
"IMAGE_FILE_HEADER" = "D9 CA 9C 6C 13 6C 6C 6C 10 6C 6C 6C 6F 6F 6C 6C"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C2 88 C2 FC B3 21 00 11 8E 0D AB 0F EE 0B 4F 92"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MigrateProxy" = "1"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run]
"31269" = "C:\DOCUME~1\ALLUSE~1\LOCALS~1\Temp\cccwmusf.scr"
The Trojan-Downloader modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"
The Trojan-Downloader modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:
"ProxyBypass" = "1"
Proxy settings are disabled:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
The Trojan-Downloader modifies IE settings for security zones to map all urls to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"
The Trojan-Downloader deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"
The process msiexec.exe:57372 makes changes in the system registry.
The Trojan-Downloader creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "03 DD F7 C3 87 79 E5 BF 40 3A 76 34 F4 22 40 40"
Network activity (URLs)
URL | IP |
---|---|
hxxp://x.hzmksreiuojy.biz/ldr.php | |
hzmksreiuojy.nl | 195.22.26.254 |
hzmksreiuojy.biz | 1.120.192.12 |
hzmksreiuojy.in | Unresolvable |
hzmksreiuojy.com | Unresolvable |
hzmksreiuojy.ru | Unresolvable |
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-Downloader'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:57348
%original file name%.exe:1668 - Delete the original Trojan-Downloader file.
- Delete or disinfect the following files created/modified by the Trojan-Downloader:
%Documents and Settings%\%current user%\Local Settings\Temp\01.tmp (11518 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\_install_\msiexec.exe (82 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\EFJPWDEO\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OLYBWHAV\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\7O2WSRHZ\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\H3UHZRWT\desktop.ini (67 bytes)
%Documents and Settings%\All Users\Local Settings\Temp\cccwmusf.scr (2104 bytes) - 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.