RANSOM_HIDDENTEARTHREE.A
Ransom.HiddenTear(Malwarebytes)
Windows
Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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 connects to certain websites to send and receive information.
It encrypts files with specific file extensions. It encrypts files found in specific folders.
TECHNICAL DETAILS
631,808 bytes
EXE
No
07 Aug 2017
Drops files, Connects to URLs/IPs, 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 drops the following files:
- %Application Data%\iekAewe.exe
- {Folder containing encrypted files}\DECRYPT_MY_FILES.HTML - ransom note
- {Folder containing encrypted files}\DECRYPT_MY_FILES.vbs
- {Folder containing encrypted files}\ID.txt
- %Application Data%\wl.bmp - set as desktop wallpaper
(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.)
Other System Modifications
This Ransomware modifies the following registry entries:
HKEY_CURRENT_USER\Control Panel\Desktop
Wallpaper = %Application Data%\wl.bmp
Other Details
This Ransomware connects to the following website to send and receive information:
- http://{BLOCKED}trdbsp4ccs.onion/data.php?id={id+key+password}
It does the following:
- It executes the dropped VBS component which is responsible for speaking the following message:
- "Attention! Attention! Attention! Your documents, photos, databases and other important files have been encrypted! We are 3301"
- It terminates itself if found running in any of the following countries:
- Azerbaijan
- Belarus
- Kazakhstan
- Lithuania
- Russia
- Slovakia
- Ukraine
Ransomware Routine
This Ransomware encrypts files with the following extensions:
- .$$$
- .$db
- .$er
- .000
- .001
- .002
- .113
- .123c
- .123d
- .123dx
- .1ph
- .2d
- .2mg
- .360
- .3d
- .3d2
- .3d4
- .3da
- .3dc
- .3df
- .3dl
- .3dm
- .3dmf
- .3dmk
- .3don
- .3dp
- .3dr
- .3ds
- .3dt
- .3dv
- .3dw
- .3dx
- .3dxml
- .3fr
- .3g2
- .3ga
- .3gp
- .3gp2
- .3gpp
- .3gpp2
- .3mm
- .3p2
- .4db
- .4dd
- .4dl
- .4dv
- .4mp
- .4th
- .4ui
- .60d
- .6cm
- .73b
- .787
- .7z
- .7z.001
- .7z.002
- .8cm
- .8pbs
- .8svx
- .8xi
- .9.png
- .__b
- ._eml
- .a00
- .a01
- .a02
- .a2c
- .a2m
- .a3w
- .a4m
- .a4p
- .a4w
- .a52
- .a5rpt
- .a5w
- .a65
- .aa
- .aa3
- .aac
- .aam
- .aao
- .aax
- .ab3
- .aba
- .abcd
- .abdata
- .abf
- .abk
- .abm
- .abs
- .abw
- .abx
- .aby
- .ac3
- .ac5
- .ac6
- .accdb
- .accdc
- .accde
- .accdr
- .accdt
- .accdw
- .accft
- .acd-zip
- .ace
- .acm
- .acp
- .acr
- .act
- .adc
- .adcp
- .ade
- .adf
- .adn
- .adp
- .adts
- .adz
- .aep
- .aepx
- .aes
- .aet
- .aetx
- .af2
- .af3
- .afc
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- .aff
- .afp
- .afs
- .aft
- .afx
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- .aspx
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- .p01
- .p19
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- .pack.gz
- .package
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- .pdfxml
- .pdg
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- .pea
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- .photoshow
- .php
- .php3
- .php4
- .php5
- .phtm
- .phtml
- .pi1
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- .pi3
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- .pic
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- .pict
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- .ply
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- .r0
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- .mcf
- .mcp
- .mcrp
- .mcs
- .mcsp
- .mcsx
- .mcxe
- .md
- .md0
- .md1
- .md2
- .md8
- .mdb
- .mdbackup
- .mdbhtml
- .mdc
- .mddata
- .mdf
- .mdi
- .mdinfo
- .mdl
- .mdn
- .mdt
- .mdx
- .mdzip
- .med
- .mef
- .mem
- .meo
- .mer
- .mesh
- .mfa
- .mfp
- .mga
- .mgcb
- .mgf
- .mgmt
- .mgmx
- .mgs
- .mgtx
- .mic
- .mid
- .midi
- .mig
- .mim
- .mime
- .min
- .mip
- .mix
- .mj2
- .mjp
- .mjpg
- .mk3d
- .mka
- .mkv
- .mlb
- .mlp
- .mma
- .mmat
- .mme
- .mmf
- .mml
- .mmm
- .mmp
- .mmpz
- .mmv
- .mnc
- .mng
- .mnk
- .mny
- .mo3
- .mob
- .mobi
- .mod
- .modd
- .model
- .mogg
- .moho
- .moi
- .moov
- .mos
- .mot
- .mou
- .mov
- .movie
- .mox
- .mp
- .mp1
- .mp10
- .mp11
- .mp2
- .mp21
- .mp2v
- .mp3
- .mp4
- .mp4v
- .mp7
- .mp9
- .mp_
- .mpa
- .mpb
- .mvb
- .mvd
- .mve
- .mvex
- .mvp
- .mvy
- .mwb
- .mws
- .mwx
- .mx
- .mx3
- .mx4
- .mx5
- .mxf
- .mxs
- .mxv
- .myd
- .myl
- .mys
- .mzp
- .na2
- .sdc
- .sdd
- .sdf
- .sdg
- .sdii
- .sdm
- .vet
- .vf
- .vfd
- .vff
- .vfw
- .vhd
- .vhdx
- .vic
- .vid
- .video
- .viewlet
- .viff
- .vis
- .viv
It encrypts files found in the following folders:
- %User Profile%\Documents
- %User Profile%\Videos
- %User Profile%\Pictures
- %User Profile%\Downloads
- {All Logical Drives}
- %Desktop%
(Note: %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.. %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.)
It avoids encrypting files found in the following folders:
- C:\Windows
It renames encrypted files using the following names:
- {original filename and extension}.3301
NOTES:
The ransom note contains the following:
It sets the desktop wallpaper to the following:
SOLUTION
9.850
13.580.08
07 Aug 2017
13.581.00
08 Aug 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
Restart in Safe Mode
Step 4
Search and delete this file
- %Application Data%\iekAewe.exe
- {Folder containing encrypted files}\DECRYPT_MY_FILES.HTML
- {Folder containing encrypted files}\DECRYPT_MY_FILES.vbs
- {Folder containing encrypted files}\ID.txt
- %Application Data%\wl.bmp
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as RANSOM_HIDDENTEARTHREE.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
Reset your Desktop properties
Step 7
Restore encrypted files from backup.
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