ryuk | 0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5

General

Target

0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe
Size

170KB
MD5

0af3265285656fe17d144bb1080e4dc2
SHA1

e2d30dde5224a79963037e6f654b1e77f1ed5f4c
SHA256

0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5
SHA512

46cf7d96769a092c702b8573c5a5d2770ac7577dcada868bb204727d0dbb42dd0eb0fc895e985b3a2e87e09984926331cd856728ea18297ee0d92d3815192932

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\\0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe"	reg.exe

Drops file in Program Files directory 64 IoCs

Processes:

taskhost.exe

description	ioc	process
File opened for modification	C:\Program Files\7-Zip\Lang\id.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\keypad\kor-kor.xml	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Etc\GMT-8	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Dublin	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\be.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\FlipPage\NavigationUp_SelectionSubpicture.png	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\Stacking\1047x576black.png	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Pacific\Midway	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Africa\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Rangoon	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\ado\msadomd28.tlb	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DissolveAnother.png	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\fonts\LucidaTypewriterRegular.ttf	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\et.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipssrl.xml	taskhost.exe
File opened for modification	C:\Program Files\CompleteLimit.xht	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Performance\whitemenu.png	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\jfr\profile.jfc	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Antarctica\Macquarie	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Prague	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\hwrdeush.dat	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Seyes.emf	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\ResizingPanels\NavigationUp_SelectionSubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Sports\SportsNotesBackground.wmv	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Boise	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Pacific\Port_Moresby	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\OFFICE14\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Chihuahua	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\pl-PL\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ro-RO\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\oledbjvs.inc	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\BabyBoy\BabyBoyScenesBackground.wmv	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Memories\btn-next-static.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Sports\SceneButtonInset_Alpha2.png	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\include\win32\jni_md.h	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\deploy\messages_es.properties	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Eirunepe	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Metlakatla	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Atlantic\Azores	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\7zCon.sfx	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ext.txt	taskhost.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ko.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\sv-SE\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\BabyGirl\flower_trans_RGB_PAL.wmv	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\FlipPage\NavigationRight_ButtonGraphic.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Rectangles\NavigationUp_SelectionSubpicture.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\rectangle_plain_Thumbnail.bmp	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\auxpad\auxbase.xml	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\hwresmlm.dat	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\OldAge\NavigationLeft_ButtonGraphic.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\Pets_frame-shadow.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Postage_VideoInset.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Rectangles\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\db\bin\sysinfo.bat	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\resources.jar	taskhost.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Kathmandu	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\cs-CZ\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\da-DK\RyukReadMe.txt	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\BabyBoy\BabyBoyMainBackground_PAL.wmv	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\OldAge\15x15dot.png	taskhost.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\VideoWall\videowall.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:

0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe

pid process

1952 0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe

description pid process

Token: SeDebugPrivilege 1952 0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe

pid	process
1952	0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe

description	pid	process
Token: SeDebugPrivilege	1952	0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.execmd.exe

description	pid	process	target process
PID 1952 wrote to memory of 520	1952	0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe	cmd.exe
PID 1952 wrote to memory of 520	1952	0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe	cmd.exe
PID 1952 wrote to memory of 520	1952	0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe	cmd.exe
PID 1952 wrote to memory of 1256	1952	0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe	taskhost.exe
PID 1952 wrote to memory of 1344	1952	0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe	Dwm.exe
PID 1952 wrote to memory of 520	1952	0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe	cmd.exe
PID 520 wrote to memory of 304	520	cmd.exe	reg.exe
PID 520 wrote to memory of 304	520	cmd.exe	reg.exe
PID 520 wrote to memory of 304	520	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\0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe
"C:\Users\Admin\AppData\Local\Temp\0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1952

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\0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe" /f
2⤵
- Suspicious use of WriteProcessMemory
PID:520

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\0bbcd5a1b2752b281cb4acefcf62343d6a9a923ac114da6e68affd01da000ac5.exe" /f
3⤵
- Adds Run key to start application
PID:304

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/1256-56-0x000000013FB20000-0x000000013FEAE000-memory.dmp

Filesize
3.6MB

Download
memory/1256-57-0x000000013FB20000-0x000000013FEAE000-memory.dmp

Filesize
3.6MB

Download
memory/1344-60-0x000000013FB20000-0x000000013FEAE000-memory.dmp

Filesize
3.6MB

Download
memory/1952-55-0x000007FEFB631000-0x000007FEFB633000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads