Gen:Worm.Zomon.1 (BitDefender), Gen:Worm.Zomon.1 (B) (Emsisoft), Trojan.Crypt (Ikarus), Gen:Worm.Zomon.1 (FSecure), Win32/Zbot.W (AVG), Win32:Torbot [Trj] (Avast), Gen:Worm.Zomon.1 (AdAware), Trojan-PSW.Win32.Zbot.6.FD, Trojan.Win32.Swrort.3.FD, BackdoorCaphaw_QKKBAL.YR, GenericInjector.YR, GenericIRCBot.YR, TrojanPSWZbot.YR, PUPTorClient.YR (Lavasoft MAS)Behaviour: Trojan-PSW, Trojan, Backdoor, Worm, PUP, IRCBot
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: e37418fd833558582ca79782b65c8043
SHA1: d27361559634e992483eead4334c8e9de0b856e3
SHA256: de3f8ac526f4eefe02920b4d8489a522e9d2875224f7257a74e81a3d7dd18f22
SSDeep: 49152:V54UJx8jfVmXR9XDceaJfs/ODT7lpG5aspvEnbv6i/t:jKmXbD4RsyT7lo5asxybyi
Size: 10713964 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: MicrosoftVisualCv71EXE, MicrosoftVisualCv70, UPolyXv05_v6
Company: no certificate found
Created at: 2009-12-03 17:13:43
Analyzed on: WindowsXP SP3 32-bit
Summary: Trojan-PSW. Trojan program intended for stealing users passwords.
Dynamic Analysis
Payload
Behaviour | Description |
---|---|
IRCBot | A bot can communicate with command and control servers via IRC channel. |
Process activity
The Trojan creates the following process(es):
ygvye.exe:1396
iexplore.exe:1216
iexplore.exe:1972
iexplore.exe:1256
iexplore.exe:280
%original file name%.exe:504
The Trojan injects its code into the following process(es):
iexplore.exe:392
iexplore.exe:184
ctfmon.exe:1224
File activity
The process iexplore.exe:1216 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\OpenCL.dll (51200 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
The process iexplore.exe:1256 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\tor\state.tmp (222 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-descriptors.tmp.tmp (5701426 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-consensus.tmp (1243068 bytes)
%Documents and Settings%\%current user%\Application Data\tor\hidden_service\hostname.tmp (24 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-descriptors.new (1432478 bytes)
%Documents and Settings%\%current user%\Application Data\tor\hidden_service\private_key.tmp (902 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-certs.tmp (18536 bytes)
The Trojan deletes the following file(s):
%Documents and Settings%\%current user%\Application Data\tor\cached-descriptors (0 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-descriptors.new (0 bytes)
The process iexplore.exe:392 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\tor\cached-descriptors.tmp.tmp (22777909 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-descriptors.new (5368461 bytes)
%Documents and Settings%\%current user%\Application Data\tor\hidden_service\hostname.tmp (24 bytes)
%Documents and Settings%\%current user%\Application Data\tor\state.tmp (817 bytes)
The Trojan deletes the following file(s):
%Documents and Settings%\%current user%\Application Data\tor\hidden_service\hostname (0 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-descriptors (0 bytes)
%Documents and Settings%\%current user%\Application Data\tor\state (0 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-descriptors.new (0 bytes)
The process iexplore.exe:184 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\OpenCL.dll (51200 bytes)
Registry activity
The process ygvye.exe:1396 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "98 9F AC 13 1E 4C 05 D3 3A 90 53 0E 1F A3 65 28"
The process iexplore.exe:1216 makes changes in the system registry.
The Trojan 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" = "65324"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65324"
[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"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65324"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 2F 00 00 00 01 00 00 00 00 00 00 00"
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "5A EF 4D 11 D9 A4 72 E1 B3 0F D4 FC 54 95 FF A6"
[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" = "65324"
[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"
The Trojan 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 modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:
"ProxyBypass" = "1"
Proxy settings are disabled:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
The Trojan 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 deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"
The process iexplore.exe:1256 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "44 E2 27 9A E7 FE F5 48 58 BA 56 94 57 F5 03 B0"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{ebcf8d94-66db-11de-b228-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{d8c0d8da-77bd-11e0-bb02-000c293bc0fd}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{91167d42-103d-11db-8c91-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{91167d45-103d-11db-8c91-806d6172696f}]
"BaseClass" = "Drive"
The process iexplore.exe:392 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "E9 66 B7 14 79 81 42 6F AE 25 B4 24 16 52 97 AF"
[HKCU\Software\Microsoft\Qyvoer]
"Osreubeq" = "3D 66 C2 93 72 1D 44 C9 DB FD CD BA 43 B4 0C AC"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{ebcf8d94-66db-11de-b228-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{d8c0d8da-77bd-11e0-bb02-000c293bc0fd}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{91167d42-103d-11db-8c91-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{91167d45-103d-11db-8c91-806d6172696f}]
"BaseClass" = "Drive"
The process iexplore.exe:184 makes changes in the system registry.
The Trojan 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" = "65324"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65324"
[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"
[HKCU\Software\Microsoft\Qyvoer]
"Osreubeq" = "3D 66 C2 93 72 1D 44 C9 DB FD CD BA 43 B4 0C AC"
[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65324"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 31 00 00 00 01 00 00 00 00 00 00 00"
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "36 67 A7 2C AA BB 57 A4 17 3A 8D 66 F2 F0 5C 9A"
[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" = "65324"
[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"
The Trojan 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 modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:
"ProxyBypass" = "1"
Proxy settings are disabled:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
The Trojan 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 deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"
The process %original file name%.exe:504 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "48 4D 2E 8A 4C 33 8C 48 05 BD C7 5D A6 85 DD 97"
The process ctfmon.exe:1224 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKCU\Software\Microsoft\Qyvoer]
"Osreubeq" = "3D 66 C2 93 72 1D 44 C9 DB FD CD BA 43 B4 0C AC"
The Trojan deletes the following value(s) in system registry:
The Trojan disables automatic startup of the application by deleting the following autorun value:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"internat.exe"
Network activity (URLs)
URL | IP |
---|---|
hxxp://checkip.dyndns.com/ | |
checkip.dyndns.org | 91.198.22.70 |
IDS verdicts
Dropped PE files
MD5 | File path |
---|---|
efdd49b208b0b9706536e4637349f483 | c:\Documents and Settings\test\Application Data\Arcii\ygvye.exe |
9b47b29d863839e0c4247a9f607b936b | c:\Documents and Settings\test\Local Settings\Temp\OpenCL.dll |
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
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):
ygvye.exe:1396
iexplore.exe:1216
iexplore.exe:1972
iexplore.exe:1256
iexplore.exe:280
%original file name%.exe:504 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\OpenCL.dll (51200 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Application Data\tor\state.tmp (222 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-descriptors.tmp.tmp (5701426 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-consensus.tmp (1243068 bytes)
%Documents and Settings%\%current user%\Application Data\tor\hidden_service\hostname.tmp (24 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-descriptors.new (1432478 bytes)
%Documents and Settings%\%current user%\Application Data\tor\hidden_service\private_key.tmp (902 bytes)
%Documents and Settings%\%current user%\Application Data\tor\cached-certs.tmp (18536 bytes) - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Reboot the computer.
Static Analysis
VersionInfo
Company Name: Microsoft
Product Name: Windows
Product Version: 1
Legal Copyright: Copyright Microsoft
Legal Trademarks:
Original Filename: windows.exe
Internal Name: Windows
File Version: 1
File Description: Windows
Comments:
Language: English (United States)
Company Name: MicrosoftProduct Name: WindowsProduct Version: 1Legal Copyright: Copyright MicrosoftLegal Trademarks: Original Filename: windows.exeInternal Name: WindowsFile Version: 1File Description: WindowsComments: Language: English (United States)
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 4096 | 1690459 | 1691648 | 4.24775 | 917d5481d1aeef3f8549866c1a9525d5 |
.rdata | 1695744 | 163386 | 163840 | 3.8586 | 326b8be1b450bec3421900fcfa3ff971 |
.data | 1859584 | 1112252 | 1105920 | 4.09676 | 2102f463e1c623b09e273be8fa21ea74 |
.rsrc | 2973696 | 31280 | 32768 | 3.6168 | 6e7e2804eaa0190d318de573ce65076a |
Network Activity
Dropped from:
Downloaded by:
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