TROJ_CRYPFUD.B
Trojan-Spy.Win32.Zbot.sbpl (Kaspersky)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
This Trojan drops copies of itself in the Windows Common Startup folder to enable its automatic execution at every system startup.
It connects to certain websites to send and receive information.
TECHNICAL DETAILS
380,928 bytes
EXE
Yes
31 Mar 2015
Encrypts files, Connects to URLs/IPs, Displays graphics/image
Installation
This Trojan drops the following files:
- %Application Data%\fud.bmp
- %Start Menu%\Programs\Startup\fud.bmp
(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Autostart Technique
This Trojan drops copies of itself in the Windows Common Startup folder to enable its automatic execution at every system startup.
Other System Modifications
This Trojan sets the system's desktop wallpaper to the following image:
Other Details
This Trojan connects to the following website to send and receive information:
- http://{BLOCKED}is.info/open/script.php
It encrypts files with the following extensions:
- 113
- 1cd
- 3gp
- 73b
- 7z
- a3d
- abf
- abk
- accdb
- arj
- as4
- asm
- asvx
- ate
- avi
- bac
- bak
- bck
- bkf
- cdr
- cer
- cf
- cpt
- csv
- db3
- dbf
- doc
- docx
- dt
- dwg
- erf
- fbf
- fbk
- fbw
- fbx
- fdb
- gbk
- gho
- gzip
- iv2i
- jpeg
- jpg
- key
- keystore
- ldf
- m2v
- m3d
- max
- mdb
- mkv
- mov
- mpeg
- nbd
- nrw
- nx1
- odb
- odc
- odp
- ods
- odt
- old
- orf
- p12
- pef
- ppsx
- ppt
- pptm
- pptx
- pst
- ptx
- pwm
- pz3
- qic
- r3d
- rar
- raw
- rtf
- rwl
- rx2
- sbs
- sldasm
- sldprt
- sn1
- sna
- spf
- sr2
- srf
- srw
- tbl
- tib
- tis
- txt
- wab
- wps
- x3f
- xls
- xlsb
- xlsk
- xlsm
- xlsx
- zip
SOLUTION
9.750
11.572.06
31 Mar 2015
11.573.00
01 Apr 2015
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Identify and terminate files detected as TROJ_CRYPFUD.B
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 3
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 4
Search and delete this file
- %Application Data%\fud.bmp
- %Start Menu%\Programs\Startup\fud.bmp
Step 5
Scan your computer with your Trend Micro product to delete files detected as TROJ_CRYPFUD.B. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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