Backdoor.Win32.Kelihos.FD (Lavasoft MAS)Behaviour: Backdoor
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: d390b8c9f3d1fced6a9796e9fff4a6a2
SHA1: 4f7772df2b3cecba9e6d9b757f6012fac6e5b4ee
SHA256: 2c3eb6875e9fce4a3396e74e4d123b35c7ddb85f638db51ea4c9677f92efb99f
SSDeep: 24576:nzKmEw4Pmpb6kOL rr1aV77AQxTi4mdSJn :emE66kOav8qQRi
Size: 1109637 bytes
File type: PE32
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2007-06-30 14:26:36
Summary: Backdoor. Malware that enables a remote control of victim's machine.
Dynamic Analysis
Payload
No specific payload has been found.
Process activity
The Backdoor creates the following process(es):The Backdoor injects its code into the following process(es):
d390b8c9f3d1fced6a9796e9fff4a6a2.exe:136
File activity
The process d390b8c9f3d1fced6a9796e9fff4a6a2.exe:136 makes changes in a file system.
The Backdoor deletes the following file(s):
C:\tmp.exe (0 bytes)
Registry activity
The process d390b8c9f3d1fced6a9796e9fff4a6a2.exe:136 makes changes in a system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F5 89 50 73 7A EC 99 27 B9 FD 0D A2 22 AE E8 E9"
[HKCU\Software\Microsoft\Notepad]
"sizeCompletedValid" = "DDx3PlZDm31KczYam0kakzqtbhawi120CxPwaxDEgLlnFXhnO4nRdRINO1oAwdPIMA=="
[HKCU\Software\Sysinternals\Process Monitor]
"UrlEnabledUse" = "80"
[HKLM\System\CurrentControlSet\Services\nm\Parameters]
"EnableStationQueries" = "1"
[HKLM\System\CurrentControlSet\Services\nm\Parameters]
"ComputerName" = "XP7"
[HKCU\Software\Microsoft\Notepad]
"infoPlayedCurrent" = "00 00 00 00 00 00 00 00"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Local AppData" = "%Documents and Settings%\%current user%\Local Settings\Application Data"
[HKCU\Software\Microsoft\Internet Explorer\Main]
"DBSavedUse" = "A2 49 4D F3 D9 1E 9F 88 01 01 08 61 00 02 01 10"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"
[HKCU\Software\Sysinternals\Process Monitor]
"FlagsModifiedValid" = "00 00 00 00 00 00 00 00"
[HKCU\Software\Microsoft\Notepad]
"styleModifiedPrev" = "80"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Internet Explorer\Main]
"PlatformCompressedValid" = "00 00 00 00 00 00 00 00"
[HKCU\Software\Microsoft\Internet Explorer\Main]
"PersistentLocalizedName" = "06 80 F9 7F 7A 50 66 11 B4 92 25 E4 4C 29 03 5A"
[HKCU\Software\Sysinternals\Process Monitor]
"DefaultCompressedRecord" = "06 80 F9 7F 73 44 07 2D 44 7E 1C 65 B6 91 78 25"
[HKCU\Software\Microsoft\Notepad]
"activeModifiedTheme" = "06 80 F9 7F 87 21 F3 6A 61 DE 67 1A 03 7E 76 2F"
[HKCU\Software\Microsoft\Internet Explorer\Main]
"RecordEnabledCheck" = "80"
[HKCU\Software\Sysinternals\Process Monitor]
"RecordModifiedMax" = "DDx3PlZDm31KczYam0kakzqtbhawi120CxPwaxDEgLlnFXhnO4nRdRINO1oAwdPIMA=="
[HKLM\System\CurrentControlSet\Services\nm\Parameters]
"UserName" = "%CurrentUserName%"
[HKCU\Software\Microsoft\Internet Explorer\Main]
"LineLoadedQuick" = "DDx3PlZDm31KczYam0kakzqtbhawi120CxPwaxDEgLlnFXhnO4nRdRINO1oAwdPIMA=="
To automatically run itself each time Windows is booted, the Backdoor adds the following link to its file to the system registry autorun key:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"NetworkVerifyer" = "c:\d390b8c9f3d1fced6a9796e9fff4a6a2.exe"
Network activity (URLs)
URL | IP |
---|---|
hxxp://46.172.134.81/index.htm (Malicious) | |
hxxp://46.172.134.81/start.htm (Malicious) |
Rootkit activity
No anomalies have been detected.
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*
- Terminate the original Backdoor's process (How to End a Process With the Task Manager).
- Delete the original Backdoor file.
- Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"NetworkVerifyer" = "c:\d390b8c9f3d1fced6a9796e9fff4a6a2.exe" - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Reboot the computer.