Prevx Research Division
"YSFCKX5.EXE"
System Back DoorFree PC Cleanup from Webroot
Use Webroot SecureAnywhere to remove YSFCKX5.EXE.
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- System Back Door
- Malicious Software
File Behavior
YSFCKX5.EXE has been seen to perform the following behavior:
- Looks at the contents of the autoexec.bat file
- Reads email address and phone book details
- Executes a Process
- Writes to another Process's Virtual Memory (Process Hijacking)
- Can communicate with other computer systems using HTTP protocols
- Found on infected systems and resists interrogation by security products
YSFCKX5.EXE has been the subject of the following behavior:
- Executed as a Process
- Created as a process on disk
- Has code inserted into its Virtual Memory space by other programs
- Terminated as a Process
Country Of Origin
The filename YSFCKX5.EXE was first seen on Jul 10 2009 in the following geographical regions of the Webroot community:
- Vietnam on Jul 10 2009
- Turkey on Jan 4 2010
File Name Aliases
YSFCKX5.EXE can also use the following file names:
- YSSX5.EXE
- YZSXXX5.EXE
- A9P6J64U8.EXE
- L4Z4B82R4.EXE
- W4B7M22N4.EXE
- I7M1L35I1.EXE
- YSX5.EXE
- E6T4Q62U7.EXE
- F2E8F25W5.EXE
- YZXXSX5.EXE
- R9Y5L24K5.EXE
- K8U3D46Z1.EXE
- T6S8F18P2.EXE
- E1A8L87L2.EXE
- N5C2Y33T2.EXE
- Y5S8N86S7.EXE
- N3W8U59N3.EXE
- D5Y7A79L2.EXE
- H4O6I89Q9.EXE
- J5N4L44I1.EXE
- T2L8L97K6.EXE
- M2C5I26G9.EXE
- R8B9N95R1.EXE
- P5A4Z22Z9.EXE
- C8W8D98O6.EXE
- P7X2Y46U8.EXE
- O8W6O52M4.EXE
- UPDATE.EXE
- S3Q8W44T8.EXE
- W4E7O88V5.EXE
- M3M2P86P8.EXE
- X7U6K74N6.EXE
- V2U8J27E3.EXE
- S8T7S33P6.EXE
- F8S7F16V6.EXE
- W4H1I17W9.EXE
- P2Q1C33W7.EXE
- Q1G3S28B9.EXE
- R4M5X39W9.EXE
- C8D2D23R8.EXE
- E7X7E19I7.EXE
- Z8Z2O97C8.EXE
- C9A5M56J6.EXE
- K7A3R27C4.EXE
- R8N7I39J6.EXE
- Z4M9W88V8.EXE
- O8G3D19F6.EXE
- I1F6E91W6.EXE
- E2R1A75W6.EXE
- S9M4R43Q7.EXE
- N9S4P63I8.EXE
- K3J2N15X2.EXE
- F8Z9M62W3.EXE
- C6R5G84F9.EXE
- X2Q2C63F4.EXE
- O6V5G42T7.EXE
- U5M2H26Y9.EXE
- I1O8B87U5.EXE
- F7F9W98A3.EXE
- E9E8N77D6.EXE
- E9J7P87Z4.EXE
- E5W3Y5I1I9D9.EXE
- D6E5B53Z1.EXE
- U2I8U51J6.EXE
- E2Z3W39I9.EXE
- M9U2Y25E5.EXE
- I5V3K75C4.EXE
- Q6S8J52E9.EXE
- S7G4W6T5O2R7.EXE
- J3K1E43X8.EXE
- D1M3P55Y4.EXE
- I8K5Z25H5.EXE
- T3K7P29M7.EXE
- J5T6H26H2.EXE
- H2U7Y26A3.EXE
- K8M1N11Y4.EXE
- W7C2W82Z2.EXE
- N2S1S99U7.EXE
- T4T7U27T3.EXE
- X9M4I18M8.EXE
- H7D9N75R4.EXE
- D7E5Q26A6.EXE
- C6S8Y47C3.EXE
- V4W4P83P9.EXE
- I5O9Y71S9.EXE
- D8X8T12L7.EXE
- W2W8H32L2.EXE
- O6T6O14Z6.EXE
- J9W9W71T5.EXE
Filesizes
The following file size has been seen:
- 113,664 bytes
- 56,365 bytes
- 56,320 bytes
File Type
The filename YSFCKX5.EXE refers to many versions of an executable program.
File Activity
One or more files with the name YSFCKX5.EXE creates, deletes, copies or moves the following files and folders:
- Opens/modifes c:\autoexec.bat
- Deletes c:\windows\number.txt
- Creates c:\documents and settings\all users\application data\microsoft\network\connections\pbk\rasphone.pb
Website Activity
One or more files with the name YSFCKX5.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:127.0.0.1:1096 Port:15
- Port 80 IP:91.195.118.117
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