ryuk | 47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642

General

Target

47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe
Size

170KB
MD5

552ad0a68c4a1fe2ff797269dd0a577c
SHA1

bd88287ed069606d736603432099a687dd556942
SHA256

47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642
SHA512

7e064b91d5cb4fa0c66d5ab8d4df936580faa42fe9e477e51b8f341d7e37c0c0465de9700a6f8b0b22ea05c556a62d6c572f58fdead790be05fbdf97a92827c0

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\\47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe"	reg.exe

Drops file in Program Files directory 64 IoCs

Processes:

taskhost.exe

description	ioc	process
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Scenes_INTRO_BG.wmv	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\Filters.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\auxpad.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\hwruklm.dat	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\To_Do_List.emf	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\OldAge\NavigationRight_SelectionSubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Pets_notes-txt-background.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\rectangle_performance_Thumbnail.bmp	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Stacking\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\descript.ion	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\readme.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\BabyBoy\nav_leftarrow.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\FlipPage\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\TravelIntroToMain_PAL.wmv	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\eo.txt	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\vi.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\oskpred.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Tiki.gif	taskhost.exe
File opened for modification	C:\Program Files\DismountSkip.js	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\OldAge\NavigationLeft_SelectionSubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Push\NavigationRight_SelectionSubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\db\bin\stopNetworkServer	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipsjpn.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\pt-BR\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Garden.htm	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\de-DE\sqlxmlx.rll.mui	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\Parity.fx	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\va.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\keypad.xml	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\rectangle_travel_Thumbnail.bmp	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\SpecialOccasion\SpecialNavigationLeft_SelectionSubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\ado\msado27.tlb	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\ja-JP\sqloledb.rll.mui	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\DVD Maker\Shared\DvdStyles\Performance\720x480blacksquare.png	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\th.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipsdeu.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipskor.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\VSTOInstaller.config	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\travel.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\sonicsptransform.ax	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\ado\msado26.tlb	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\OldAge\NavigationUp_SelectionSubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\OldAge\decorative_rule.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\photoedge_videoinset.png	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\en.ttt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\main\zh-dayi.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\numbers\numbase.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Monet.jpg	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\shadowonlyframe_selectionsubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Sports\ParentMenuButtonIcon.png	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\hwrusash.dat	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\fr-FR\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Memories\Notes_content-background.png	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ca.txt	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sr-spl.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\main\base_ca.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipssrb.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\de-DE\sqloledb.rll.mui	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\fr-FR\sqlxmlx.rll.mui	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Pets_frame-imageMask.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Memories\button-highlight.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:

47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe

pid process

612 47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe

description pid process

Token: SeDebugPrivilege 612 47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe

pid	process
612	47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe

description	pid	process
Token: SeDebugPrivilege	612	47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.execmd.exe

description	pid	process	target process
PID 612 wrote to memory of 1720	612	47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe	cmd.exe
PID 612 wrote to memory of 1720	612	47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe	cmd.exe
PID 612 wrote to memory of 1720	612	47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe	cmd.exe
PID 612 wrote to memory of 1256	612	47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe	taskhost.exe
PID 612 wrote to memory of 1344	612	47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe	Dwm.exe
PID 612 wrote to memory of 1720	612	47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe	cmd.exe
PID 1720 wrote to memory of 1408	1720	cmd.exe	reg.exe
PID 1720 wrote to memory of 1408	1720	cmd.exe	reg.exe
PID 1720 wrote to memory of 1408	1720	cmd.exe	reg.exe

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
- Drops file in Program Files directory
PID:1256

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1344

C:\Users\Admin\AppData\Local\Temp\47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe
"C:\Users\Admin\AppData\Local\Temp\47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:612

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\47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe" /f
2⤵
- Suspicious use of WriteProcessMemory
PID:1720

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\47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe" /f
3⤵
- Adds Run key to start application
PID:1408

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

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Downloads

memory/612-55-0x000007FEFB5D1000-0x000007FEFB5D3000-memory.dmp

Filesize
8KB

Download
memory/1256-56-0x000000013FEB0000-0x000000014023E000-memory.dmp

Filesize
3.6MB

Download
memory/1256-58-0x000000013FEB0000-0x000000014023E000-memory.dmp

Filesize
3.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads