ryuk | 0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0

General

Target

0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe
Size

170KB
MD5

e83e446765df038755ff52cf5d311b6c
SHA1

79f3c9691cd5d68ad289ba6a0c17e1a587d5c48b
SHA256

0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0
SHA512

f6bbb71e53ac8e61fff0cbb2ab4ab25b40d29f5a537379eb8339f552eac68b7237cfd2dcb77783d2faa6aa582cb70c3ce4703a7ed9ed0dacdf413c1d60b1c63e

Score

10^/10

ryuk persistence ransomware

Malware Config

Extracted

Path

C:\RyukReadMe.txt

Family

ryuk

Ransom Note

Your network has been penetrated. All files on each host in the network have been encrypted with a strong algorithm. Backups were either encrypted or deleted or backup disks were formatted. Shadow copies also removed, so F8 or any other methods may damage encrypted data but not recover. We exclusively have decryption software for your situation No decryption software is available in the public. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT RENAME OR MOVE the encrypted and readme files. DO NOT DELETE readme files. This may lead to the impossibility of recovery of the certain files. To get info (decrypt your files) contact us at [email protected] or [email protected] BTC wallet: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe

Emails

[email protected]

Wallets

14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk

Signatures

Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
ransomware ryuk

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchos = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe"	reg.exe

Drops file in Program Files directory 64 IoCs

Processes:

taskhost.exe

description	ioc	process
File opened for modification	C:\Program Files\Common Files\System\Ole DB\es-ES\sqloledb.rll.mui	taskhost.exe
File opened for modification	C:\Program Files\Internet Explorer\en-US\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\COPYRIGHT	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\ja-JP\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\redmenu.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Shatter\NavigationUp_SelectionSubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\Internet Explorer\SIGNUP\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\SecretST.TTF	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\en-US\boxed-join.avi	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipsesp.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Wrinkled_Paper.gif	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\TextConv\fr-FR\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\SpeechEngines\Microsoft\TTS20\es-ES\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\adcvbs.inc	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\BabyGirl\flower_trans_rgb.wmv	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Memories\Title_content-background.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Stacking\NavigationLeft_SelectionSubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\db\bin\setEmbeddedCP.bat	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\db\lib\derbyLocale_hu.jar	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\16to9Squareframe_VideoInset.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Vignette\whiteband.png	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\gl.txt	taskhost.exe
File opened for modification	C:\Program Files\ApproveRevoke.html	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\ResizingPanels\1047x576black.png	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\main.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\SpeechEngines\Microsoft\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\BabyGirl\16_9-frame-image-mask.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Shatter\1047x576black.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Sports\CircleSubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\main\baseAltGr_rtl.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\hr-HR\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipsdan.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Triedit\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\FlipPage\NavigationUp_ButtonGraphic.png	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\db\bin\NetworkServerControl.bat	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Push\1047x576black.png	taskhost.exe
File opened for modification	C:\Program Files\Common Files\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\main\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Blue_Gradient.jpg	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Memories\button-highlight.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Sports\SceneButtonInset_Alpha1.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\passport_mask_right.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\ParentMenuButtonIconSubpict.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\ResizingPanels\NavigationLeft_ButtonGraphic.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\btn-back-static.png	taskhost.exe
File opened for modification	C:\Program Files\Internet Explorer\de-DE\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\SpeechEngines\Microsoft\TTS20\ja-JP\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\NextMenuButtonIcon.png	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\th-TH\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\es-ES\sqlxmlx.rll.mui	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Sports\SportsScenesBackground.wmv	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipsita.xml	taskhost.exe
File opened for modification	C:\Program Files\DismountSave.bmp	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\pt.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\ado\en-US\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Eurosti.TTF	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Rectangles\1047x576_91n92.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\SpecialOccasion\SpecialNavigationRight_ButtonGraphic.png	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\si.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\OrangeCircles.jpg	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\rtstreamsink.ax	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Circle_SelectionSubpictureA.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Vignette\NavigationLeft_SelectionSubpicture.png	taskhost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe

pid process

1772 0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe

description pid process

Token: SeDebugPrivilege 1772 0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe

pid	process
1772	0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe

description	pid	process
Token: SeDebugPrivilege	1772	0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.execmd.exe

description	pid	process	target process
PID 1772 wrote to memory of 1548	1772	0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe	cmd.exe
PID 1772 wrote to memory of 1548	1772	0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe	cmd.exe
PID 1772 wrote to memory of 1548	1772	0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe	cmd.exe
PID 1772 wrote to memory of 1124	1772	0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe	taskhost.exe
PID 1772 wrote to memory of 1232	1772	0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe	Dwm.exe
PID 1772 wrote to memory of 1548	1772	0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe	cmd.exe
PID 1548 wrote to memory of 860	1548	cmd.exe	reg.exe
PID 1548 wrote to memory of 860	1548	cmd.exe	reg.exe
PID 1548 wrote to memory of 860	1548	cmd.exe	reg.exe

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1232

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
- Drops file in Program Files directory
PID:1124

C:\Users\Admin\AppData\Local\Temp\0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe
"C:\Users\Admin\AppData\Local\Temp\0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1772

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe" /f
2⤵
- Suspicious use of WriteProcessMemory
PID:1548

C:\Windows\system32\reg.exe
REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe" /f
3⤵
- Adds Run key to start application
PID:860

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1124-56-0x000000013FB40000-0x000000013FECE000-memory.dmp

Filesize
3.6MB

Download
memory/1124-58-0x000000013FB40000-0x000000013FECE000-memory.dmp

Filesize
3.6MB

Download
memory/1232-59-0x000000013FB40000-0x000000013FECE000-memory.dmp

Filesize
3.6MB

Download
memory/1772-55-0x000007FEFBC31000-0x000007FEFBC33000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads