RANSOM_HIDDENTEARDIAMOND.A

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 deletes itself after execution.

It encrypts files with specific file extensions. It encrypts files found in specific folders.

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 drops the following files:

• {folder of encrypted files}\_READ_IT_FOR_RECOVERY_FILES.html

Other Details

This Ransomware deletes itself after execution.

Ransomware Routine

This Ransomware encrypts files with the following extensions:

• .txt
• .doc
• .docx
• .xls
• .xlsx
• .ppt
• .pptx
• .odt
• jpeg
• .png
• .csv
• .sql
• .mdb
• .sln
• .php
• .asp
• .aspx
• .html
• .xml
• .psd
• .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
• .rofl
• .hkx
• .bar
• .upk
• .das
• .iwi
• .litemod
• .asset
• .forge
• .ltx
• .bsa
• .apk
• .re4
• .sav
• .lbf
• .slm
• .bik
• .epk
• .rgss3a
• .pak
• .big
• wallet
• .wotreplay
• .xxx
• .desc
• .py
• .m3u
• .flv
• .js
• .css
• .rb
• .p7c
• .pk7
• .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
• .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

It encrypts files found in the following folders:

• %Desktop%
• %Favorites%
• %System Root%
• %Application Data%\Microsoft\Windows\Recent
• %User Profile%\Pictures
• %User Profile%\Music
• %User Profile%\Videos
• %User Profile%\Documents
• %User Profile%\Downloads
• %All Users Profile%\Documents
• %All Users Profile%\Pictures
• %All Users Profile%\Music
• %All Users Profile%\Desktop

(Note: %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in 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.. %Favorites% is the Favorites folder, where it usually is C:\Documents and Settings\{user name}\Favorites on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Favorites 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.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %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.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData 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.)

It avoids encrypting files with the following strings in their file name:

• AppData
• Temp

It avoids encrypting files with the following strings in their file path:

• Windows
• Program Files
• Program Files (x86)
• Roaming
• LocalLow
• Temp
• LocalLow
• AppData

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

• {original filename}.{6 random characters}

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