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RANSOM_LOCKOUT.A

May 29, 2017
 ALIASES:

Trojan-Ransom.Win32.Gen.dxg(Kaspersky)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It encrypts files with specific file extensions. It drops files as ransom note.

  TECHNICAL DETAILS

File Size:

161,792 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

16 May 2017

Payload:

Displays message/message boxes, Encrypts files

Arrival Details

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Ransomware adds the following mutexes to ensure that only one of its copies runs at any one time:

  • {D74D825B-E27F-411B-A2A3-27EBC53A1A2B}

Other System Modifications

This Ransomware adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
RegRemind = C:\Payment-Instructions.txt

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
System
legalnoticecaption = {id}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
System
legalnoticetext = Contact bnd54@{BLOCKED}or.com with your Payment ID from above to get price and payment details for unique decryption software. Files are encrypted with RSA-2048 encryption so the only way to recover your data is using our software. We will decrypt 1 file for you to show you will get all data back using our unlocker. Price will double in 3 days so don't delay!

Ransomware Routine

This Ransomware encrypts files with the following extensions:

  • .txt
  • .jpg
  • .jpe
  • .gif
  • .bmp
  • .png
  • .jpeg
  • .avi
  • .pdf
  • .mp3
  • .mp4
  • .ppt
  • .pps
  • .pptx
  • .xls
  • .xlsx
  • .QBB
  • .QBW
  • .QDB
  • .doc
  • .docx
  • .docm
  • .zip
  • .rar
  • .7z
  • .wps
  • .ssh
  • .key
  • .psd
  • .tc
  • .dwg
  • .wpd
  • .rtf
  • .raw
  • .pst
  • .wmv
  • .mpeg
  • .mpg
  • .mov
  • .m4v
  • .mkv
  • .vhd
  • .vmdk
  • .vdi
  • .vbox
  • .sqlite
  • .sqlite3
  • .sql
  • .step
  • .java
  • .map
  • .sav
  • .save
  • .bak
  • .conf
  • .pem
  • .wallet
  • .asset
  • .dmp
  • .svg
  • .cfg
  • .tif
  • .tiff
  • .vbp
  • .vbw
  • .bas
  • .prj
  • .php
  • .htm
  • .html
  • .dat
  • .psk
  • .c
  • .cpp
  • .cpp
  • .accdb
  • .awl
  • .h
  • .config
  • .arc
  • .mwp
  • .s5p
  • .s7p
  • .sql
  • .mp4
  • .7z
  • .rar
  • .m4a
  • .wma
  • .avi
  • .wmv
  • .csv
  • .d3dbsp
  • .zip
  • .sie
  • .sum
  • .ibank
  • .t13
  • .t12
  • .qdf
  • .gdb
  • .tax
  • .pkpass
  • .bc6
  • .bc7
  • .bkp
  • .qic
  • .bkf
  • .sidn
  • .sidd
  • .mddata
  • .itl
  • .itdb
  • .icxs
  • .hvpl
  • .hplg
  • .hkdb
  • .mdbackup
  • .syncdb
  • .gho
  • .cas
  • .svg
  • .map
  • .wmo
  • .itm
  • .sb
  • .fos
  • .mov
  • .vdf
  • .ztmp
  • .sis
  • .sid
  • .ncf
  • .menu
  • .layout
  • .dmp
  • .blob
  • .esm
  • .vcf
  • .vtf
  • .dazip
  • .fpk
  • .mlx
  • .kf
  • .iwd
  • .vpk
  • .tor
  • .psk
  • .rim
  • .w3x
  • .fsh
  • .ntl
  • .arch00
  • .lvl
  • .snx
  • .cfr
  • .ff
  • .vpp_pc
  • .lrf
  • .m2
  • .mcmeta
  • .vfs0
  • .mpqge
  • .kdb
  • .db0
  • .dba
  • .hkx
  • .bar
  • .upk
  • .das
  • .iwi
  • .litemod
  • .asset
  • .forge
  • .ltx
  • .bsa
  • .apk
  • .re4
  • .sav
  • .lbf
  • .slm
  • .bik
  • .epk
  • .rgss3a
  • .pak
  • .big
  • .wallet
  • .desc
  • .py
  • .m3u
  • .flv
  • .js
  • .css
  • .rb
  • .png
  • .jpeg
  • .txt
  • .p7c
  • .p7b
  • .p12
  • .pfx
  • .pem
  • .crt
  • .cer
  • .der
  • .x3f
  • .srw
  • .pef
  • .ptx
  • .r3d
  • .rw2
  • .rwl
  • .raw
  • .raf
  • .orf
  • .nrw
  • .mrwref
  • .mef
  • .erf
  • .kdc
  • .dcr
  • .cr2
  • .crw
  • .bay
  • .sr2
  • .srf
  • .arw
  • .3fr
  • .dng
  • .jpe
  • .jpg
  • .cdr
  • .indd
  • .ai
  • .eps
  • .pdf
  • .pdd
  • .psd
  • .dbf
  • .mdf
  • .wb2
  • .rtf
  • .wpd
  • .dxg
  • .xf
  • .dwg
  • .pst
  • .accdb
  • .mdb
  • .pptm
  • .pptx
  • .ppt
  • .xlk
  • .xlsb
  • .xlsm
  • .xlsx
  • .xls
  • .wps
  • .docm
  • .docx
  • .doc
  • .odb
  • .odc
  • .odm
  • .odp
  • .ods
  • .odt
  • .webm
  • .conf
  • .sha
  • .asm
  • .inc
  • .url
  • .xml
  • .nk2
  • .pst
  • .config
  • .iso

It avoids encrypting files found in the following folders:

  • C:\Windows.old
  • C:\Windows
  • C:\Program Files
  • C:\Program Files (x86)
  • C:\$Recycle.Bin
  • C:\ProgramData
  • C:\DELL
  • C:\NVIDIA
  • C:\DRIVERS
  • C:\SWSETUP
  • C:\System Volume Information
  • C:\PerfLogs
  • C:\Intel
  • C:\ATI
  • C:\AMD

It appends the following extension to the file name of the encrypted files:

  • .Lockout

It drops the following file(s) as ransom note:

  • {Encrypted File Directory}\Payment-Instructions.txt
  • C:\Payment-Instructions.txt

It leaves text files that serve as ransom notes containing the following text:

NOTES:

This ransomware displays the following before the login screen:

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.412.02

FIRST VSAPI PATTERN DATE:

17 May 2017

VSAPI OPR PATTERN File:

13.413.00

VSAPI OPR PATTERN Date:

18 May 2017

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

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 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

 
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • RegRemind = C:\Payment-Instructions.txt
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
    • legalnoticecaption = {id}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
    • legalnoticetext = Contact bnd54@mail2tor.com with your Payment ID from above to get price and payment details for unique decryption software. Files are encrypted with RSA-2048 encryption so the only way to recover your data is using our software. We will decrypt 1 file for you to show you will get all data back using our unlocker. Price will double in 3 days so don't delay!

Step 4

Search and delete these files

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • C:\Payment-Instructions.txt
  • {Encrypted File Directory}\Payment-Instructions.txt

Step 5

Scan your computer with your Trend Micro product to delete files detected as RANSOM_LOCKOUT.A. 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.

Step 6

Restore encrypted files from backup.


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