netwalker | 92e4d38e17e4dc32519df7324013477908c9cb725ea29aea6e4fd8c27eb7087d

General

Target

92e4d38e17e4dc32519df7324013477908c9cb725ea29aea6e4fd8c27eb7087d.dll
Size

93KB
MD5

239163e6019670e326087aa59adb5007
SHA1

c26d5fbe02f8b0e6a40672b12e69ee78343e9a41
SHA256

92e4d38e17e4dc32519df7324013477908c9cb725ea29aea6e4fd8c27eb7087d
SHA512

54a02d9fb98bc8d9dca8019621b61f501080bd0cee241fcaa84e77cc2a4ece5ee5b7a44dd675d5a421b1c48af9ce4ce321b89e9204c99e28e56f90bdeae59410

Score

10^/10

netwalker ransomware spyware

Malware Config

Extracted

Path

C:\2D8AA1-Readme.txt

Family

netwalker

Ransom Note

Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .2d8aa1 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_2d8aa1: fVy20w5pz5BGsby8L1Q7QJk7o43mvwD5jm6F3GckrjKYcZQaAZ ar4F3eY932vhtDl015DNUYaU9sJBoerh47E2y8RQ/Dioo+TAuG pLz7HsCI2AGBy6woDU0MTZWyUT302uAo/gLAEn5FsGmeSSrpQC 2wd/HRsE+G/u5VmoOFwzNaUe0QW7SgLQTgNkzOGeM5Z/46jOga ocrMkZe87HE+1Z0HoFTtILnMSN7lEF3RxYKcCHAQVHX5XqwG0u z4ZihG79AQlM/hzUTN+v9GV0HINpr2y/bhclCsIA==}

URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\Admin\Desktop\2D8AA1-Readme.txt

Family

netwalker

Ransom Note

Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .2d8aa1 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_2d8aa1: fVy20w5pz5BGsby8L1Q7QJk7o43mvwD5jm6F3GckrjKYcZQaAZ ar4F3eY932vhtDl015DNUYaU9sJBoerh47E2y8RQ/Dioo+TAuG pLz7HsCI2AGBy6woDU0MTZWyUT302uAo/gLAEn5FsGmeSSrpQC 2wd/HRsE+G/u5VmoOFwzNaUe0QW7SgLQTgNkzOGeM5Z/46jOga ocrMkZe87HE+1Z0HoFTtILnMSN7lEF3RxYKcCHAQVHX5XqwG0u z4ZihG79AQlM/hzUTN+v9GV0HINpr2y/bhclCsIA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .2d8aa1 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_2d8aa1: fVy20w5pz5BGsby8L1Q7QJk7o43mvwD5jm6F3GckrjKYcZQaAZ ar4F3eY932vhtDl015DNUYaU9sJBoerh47E2y8RQ/Dioo+TAuG pLz7HsCI2AGBy6woDU0MTZWyUT302uAo/gLAEn5FsGmeSSrpQC 2wd/HRsE+G/u5VmoOFwzNaUe0QW7SgLQTgNkzOGeM5Z/46jOga ocrMkZe87HE+1Z0HoFTtILnMSN7lEF3RxYKcCHAQVHX5XqwG0u z4ZihG79AQlM/hzUTN+v9GV0HINpr2y/bhclCsIA==}

URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

Netwalker Ransomware
Ransomware family with multiple versions. Also known as MailTo.
ransomware netwalker

Modifies extensions of user files 8 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

rundll32.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\UnlockSuspend.tif => C:\Users\Admin\Pictures\UnlockSuspend.tif.2d8aa1	rundll32.exe
File renamed	C:\Users\Admin\Pictures\ResumeHide.crw => C:\Users\Admin\Pictures\ResumeHide.crw.2d8aa1	rundll32.exe
File renamed	C:\Users\Admin\Pictures\RedoPublish.crw => C:\Users\Admin\Pictures\RedoPublish.crw.2d8aa1	rundll32.exe
File renamed	C:\Users\Admin\Pictures\ExitSet.tiff => C:\Users\Admin\Pictures\ExitSet.tiff.2d8aa1	rundll32.exe
File renamed	C:\Users\Admin\Pictures\CloseNew.crw => C:\Users\Admin\Pictures\CloseNew.crw.2d8aa1	rundll32.exe
File renamed	C:\Users\Admin\Pictures\ResizeDisable.png => C:\Users\Admin\Pictures\ResizeDisable.png.2d8aa1	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\ExitSet.tiff	rundll32.exe
File renamed	C:\Users\Admin\Pictures\UndoBackup.png => C:\Users\Admin\Pictures\UndoBackup.png.2d8aa1	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Drops file in Program Files directory 7481 IoCs

Processes:

rundll32.exe

description	ioc	process
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\icons\2D8AA1-Readme.txt	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-netbeans-core-multitabs.xml	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Bibliography\Sort\TITLE.XSL	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.components.ui.zh_CN_5.5.0.165303.jar	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\config\Modules\com-sun-tools-visualvm-profiler.xml	rundll32.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\Asia\Aqtau	rundll32.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\Europe\Samara	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.ui.themes_1.0.1.v20140819-1717\css\dark\e4-dark_basestyle.css	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Fonts\Elemental.xml	rundll32.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\locale\sv\LC_MESSAGES\vlc.mo	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\SystemV\MST7	rundll32.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\2D8AA1-Readme.txt	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0105294.WMF	rundll32.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\lua\http\css\ui-lightness\images\ui-icons_ffffff_256x240.png	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\locale\org-netbeans-lib-profiler-charts_zh_CN.jar	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-autoupdate-cli_zh_CN.jar	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\POSTCARD.DPV	rundll32.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\86.0.4240.111\VisualElements\Logo.png	rundll32.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\locale\ast\LC_MESSAGES\vlc.mo	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-host_ja.jar	rundll32.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\BrightYellow\2D8AA1-Readme.txt	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Effects\Elemental.eftx	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\db\lib\derby.war	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.browser_5.5.0.165303.jar	rundll32.exe
File created	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.emf.common_2.10.1.v20140901-1043\META-INF\2D8AA1-Readme.txt	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BL00932_.WMF	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0107258.WMF	rundll32.exe
File opened for modification	C:\Program Files\WatchExpand.m4v	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\ACCSBAR.POC	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Manila	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveProjectToolset\ProjectTool\Project Report Type\Fancy\Hierarchy.xsl	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Etc\GMT-2	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-uisupport_ja.jar	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\Swirl\tab_on.gif	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0105638.WMF	rundll32.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\Americana\2D8AA1-Readme.txt	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\Computers\computericon.jpg	rundll32.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mr.txt	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Kabul	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BS01634_.WMF	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Templates\1033\OrielMergeLetter.Dotx	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms\VIEW.CSS	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.core_2.3.0.v20131211-1531.jar	rundll32.exe
File created	C:\Program Files\VideoLAN\VLC\locale\et\LC_MESSAGES\2D8AA1-Readme.txt	rundll32.exe
File opened for modification	C:\Program Files\Java\jre7\lib\management-agent.jar	rundll32.exe
File opened for modification	C:\Program Files\Java\jre7\lib\fonts\LucidaSansDemiBold.ttf	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\J0235241.WMF	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\ZPDIR2B.GIF	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.simpleconfigurator.nl_zh_4.4.0.v20140623020002.jar	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\CONVERT\OLMAIL.FAE	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD14829_.GIF	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-core-multitabs.xml	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Santiago	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0089992.WMF	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\MSPUB.DEV_COL.HXT	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms4\FormsStyles\LightSpirit.css	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA02371_.WMF	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\include\win32\2D8AA1-Readme.txt	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\J0301076.WMF	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolBMPs\MessageAttachmentIconImagesMask.bmp	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\J0212957.WMF	rundll32.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\Asia\Anadyr	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.osgi.compatibility.state_1.0.1.v20140709-1414.jar	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18251_.WMF	rundll32.exe

Suspicious behavior: EnumeratesProcesses 243 IoCs

Processes:

rundll32.exe

pid	process
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe
484	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 484 rundll32.exe
Token: SeImpersonatePrivilege 484 rundll32.exe

description	pid	process
Token: SeDebugPrivilege	484	rundll32.exe
Token: SeImpersonatePrivilege	484	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 484 wrote to memory of 3924	484	rundll32.exe	notepad.exe
PID 484 wrote to memory of 3924	484	rundll32.exe	notepad.exe
PID 484 wrote to memory of 3924	484	rundll32.exe	notepad.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\92e4d38e17e4dc32519df7324013477908c9cb725ea29aea6e4fd8c27eb7087d.dll,#1
1⤵
- Modifies extensions of user files
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:484

C:\Windows\system32\notepad.exe
C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\2D8AA1-Readme.txt"
2⤵
PID:3924

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Desktop\2D8AA1-Readme.txt
MD5
785c7cae540af53d5f281e3799819ac3

SHA1
d3619d1ed0067fe372b83fe8a066ea994018907c

SHA256
28716e4d55ce795e67862448a8e705720c553a009ac20586dadc3be110a3e951

SHA512
de9e3527af2b33b70d592fec43716207f90b65adf61f46282ab4f9806e6c4b4d5212964bde6563e159278c4571bbf68bf6137595050fe3f6a15e9d93e4cb1d77

Download Submit
memory/3924-0-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads