Backdoor.Fynloski.E (BitDefender), Backdoor:Win32/Fynloski.A (Microsoft), HEUR:Trojan.Win32.Generic (Kaspersky), Backdoor.Win32.Fynloski.A (v) (VIPRE), BackDoor.Comet.134 (DrWeb), Backdoor.Fynloski.E (B) (Emsisoft), Generic.gj (McAfee), Suspicious.MH690.A (Symantec), Backdoor.Win32.Fynloski (Ikarus), Backdoor.Fynloski.E (FSecure), Win32/DH{IAMPCTZPFRsteyQiXA} (AVG), Win32:Delf-SQI [Trj] (Avast), TROJ_AGENT_056176.TOMB (TrendMicro), Backdoor.Win32.Fynloski.FD, Trojan.Win32.Iconomon.FD, Trojan.Win32.Sasfis.FD, VirTool.Win32.DelfInject.FD, TrojanDownloaderAndromeda.YR, GenericDownloader.YR, BackdoorFynloski.YR, GenericInjector.YR (Lavasoft MAS)Behaviour: Trojan-Downloader, Trojan, Backdoor, VirTool
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: f0b6eecc73f296ea3c26328d58d67b04
SHA1: dfbc388d3eea46359b6f10a1e4519542c53b168a
SHA256: d92eb98e9abfe4ccff9e9a1f21f8d0f6f4ec56e60ef2f5617e7fb5120be685a1
SSDeep: 6144:IgswhRH1yNHSd02rLt90sA1TIlJ64rYJFGKm 3GSH2ppnVa:IbW2SNX8IXrgFGy3H23nk
Size: 344064 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: PECompactV2X, PECompactv20, UPolyXv05_v6
Company: no certificate found
Created at: 2012-06-03 21:33:20
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):
attrib.exe:1820
attrib.exe:376
f0b6eecc73f296ea3c26328d58d67b04.exe:676
The Backdoor injects its code into the following process(es):
msdcsc.exe:336
notepad.exe:1736
File activity
The process f0b6eecc73f296ea3c26328d58d67b04.exe:676 makes changes in a file system.
The Backdoor creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\My Documents\MSDCSC\msdcsc.exe (2105 bytes)
Registry activity
The process msdcsc.exe:336 makes changes in a system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "34 4E 14 12 09 21 59 52 02 22 D5 F6 6F 74 29 9F"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"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\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
Antivirus notifications are disabled:
[HKLM\SOFTWARE\Microsoft\Security Center]
"AntiVirusDisableNotify" = "1"
To automatically run itself each time Windows is booted, the Backdoor adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"??????????.b" = "%Documents and Settings%\%current user%\My Documents\MSDCSC\msdcsc.exe"
The process attrib.exe:1820 makes changes in a system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "77 B3 AA 63 BD 60 81 0A 5E F3 54 1E 7C BC 3D 58"
The process attrib.exe:376 makes changes in a system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D3 01 17 3A 58 7F 81 94 3B 61 63 F4 5E 04 33 7B"
The process notepad.exe:1736 makes changes in a system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "93 F1 CA 53 15 67 D2 C8 8D 9F 60 4E 24 CA 7D 27"
The process f0b6eecc73f296ea3c26328d58d67b04.exe:676 makes changes in a system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "28 E7 BA 5C 2B 57 D3 44 76 10 68 95 DA 53 2D 0F"
[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\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\My Documents\MSDCSC]
"msdcsc.exe" = "Remote Service Application"
The Backdoor 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"
To automatically run itself each time Windows is booted, the Backdoor adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"??????????.b" = "%Documents and Settings%\%current user%\My Documents\MSDCSC\msdcsc.exe"
The Backdoor 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 Backdoor 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 Backdoor adds the reference to itself to be executed when a user logs on:
[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"UserInit" = "%System%\userinit.exe,%Documents and Settings%\%current user%\My Documents\MSDCSC\msdcsc.exe"
Network activity (URLs)
No activity has been detected.
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 malicious process(es) (How to End a Process With the Task Manager):
attrib.exe:1820
attrib.exe:376
f0b6eecc73f296ea3c26328d58d67b04.exe:676 - Delete the original Backdoor file.
- Delete or disinfect the following files created/modified by the Backdoor:
%Documents and Settings%\%current user%\My Documents\MSDCSC\msdcsc.exe (2105 bytes)
- Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"??????????.b" = "%Documents and Settings%\%current user%\My Documents\MSDCSC\msdcsc.exe" - Remove the references to the Backdoor by modifying the following registry value(s) (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"UserInit" = "%System%\userinit.exe,%Documents and Settings%\%current user%\My Documents\MSDCSC\msdcsc.exe" - Reboot the computer.