blackmatter | 2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2

General

Target

RIJXROV.exe
Size

79KB
MD5

18c7c940bc6a4e778fbdf4a3e28151a8
SHA1

f3589918d71b87c7e764479b79c4a7b485cb746a
SHA256

2e50eb85f6e271001e69c5733af95c34728893145766066c5ff8708dcc0e43b2
SHA512

6e808fe882640a517c2054fdece73059c7ea3e27a946e55f41b91fd0f757dcd8c76be8f381f60f3e45449edebaa4f620b903337727607f7768543b1acec40d18

Score

10^/10

blackmatter ransomware

Malware Config

Extracted

Path

\??\Z:\fViGXl6GW.README.txt

Family

blackmatter

Ransom Note

~+ * + ' BLACK | () .-.,='``'=. - o - '=/_ \ | * | '=._ | \ `=./`, ' . '=.__.=' `=' * + Matter + O * ' . >>> What happens? Your network is encrypted, and currently not operational. We need only money, after payment we will give you a decryptor for the entire network and you will restore all the data. >>> What data stolen? From your network was stolen 250 GB of data. If you do not contact us we will publish all your data in our blog and will send it to the biggest mass media. Blog post link: http://blackmax7su6mbwtcyo3xwtpfxpm356jjqrs34y4crcytpw7mifuedyd.onion/YdWh7oMKjT/13f1a8efc53e2fa712813f4c39147a79 >>> What guarantees? We are not a politically motivated group and we do not need anything other than your money. If you pay, we will provide you the programs for decryption and we will delete your data. If we do not give you decrypters or we do not delete your data, no one will pay us in the future, this does not comply with our goals. We always keep our promises. >> How to contact with us? 1. Download and install TOR Browser (https://www.torproject.org/). 2. Open http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/5AZHJFLKJNPOJ4F5O5T >> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://blackmax7su6mbwtcyo3xwtpfxpm356jjqrs34y4crcytpw7mifuedyd.onion/YdWh7oMKjT/13f1a8efc53e2fa712813f4c39147a79

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/5AZHJFLKJNPOJ4F5O5T

Signatures

BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
ransomware blackmatter

Modifies extensions of user files 20 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\SuspendDisconnect.tif.fViGXl6GW	RIJXROV.exe
File opened for modification	C:\Users\Admin\Pictures\RestartClear.tif.fViGXl6GW	RIJXROV.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeApprove.png.fViGXl6GW	RIJXROV.exe
File renamed	C:\Users\Admin\Pictures\RestartClear.tif => C:\Users\Admin\Pictures\RestartClear.tif.fViGXl6GW	RIJXROV.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeDeny.tiff.fViGXl6GW	RIJXROV.exe
File opened for modification	C:\Users\Admin\Pictures\TestTrace.crw.fViGXl6GW	RIJXROV.exe
File renamed	C:\Users\Admin\Pictures\WaitSplit.tiff => C:\Users\Admin\Pictures\WaitSplit.tiff.fViGXl6GW	RIJXROV.exe
File opened for modification	C:\Users\Admin\Pictures\WaitSplit.tiff.fViGXl6GW	RIJXROV.exe
File renamed	C:\Users\Admin\Pictures\LimitOptimize.png => C:\Users\Admin\Pictures\LimitOptimize.png.fViGXl6GW	RIJXROV.exe
File renamed	C:\Users\Admin\Pictures\RequestResume.png => C:\Users\Admin\Pictures\RequestResume.png.fViGXl6GW	RIJXROV.exe
File opened for modification	C:\Users\Admin\Pictures\SplitUnregister.png.fViGXl6GW	RIJXROV.exe
File renamed	C:\Users\Admin\Pictures\SuspendDisconnect.tif => C:\Users\Admin\Pictures\SuspendDisconnect.tif.fViGXl6GW	RIJXROV.exe
File opened for modification	C:\Users\Admin\Pictures\LimitOptimize.png.fViGXl6GW	RIJXROV.exe
File renamed	C:\Users\Admin\Pictures\SplitUnregister.png => C:\Users\Admin\Pictures\SplitUnregister.png.fViGXl6GW	RIJXROV.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeDeny.tiff	RIJXROV.exe
File renamed	C:\Users\Admin\Pictures\ResumeDeny.tiff => C:\Users\Admin\Pictures\ResumeDeny.tiff.fViGXl6GW	RIJXROV.exe
File renamed	C:\Users\Admin\Pictures\TestTrace.crw => C:\Users\Admin\Pictures\TestTrace.crw.fViGXl6GW	RIJXROV.exe
File opened for modification	C:\Users\Admin\Pictures\WaitSplit.tiff	RIJXROV.exe
File opened for modification	C:\Users\Admin\Pictures\RequestResume.png.fViGXl6GW	RIJXROV.exe
File renamed	C:\Users\Admin\Pictures\ResumeApprove.png => C:\Users\Admin\Pictures\ResumeApprove.png.fViGXl6GW	RIJXROV.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\Z:	RIJXROV.exe

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\fViGXl6GW.bmp"	RIJXROV.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\fViGXl6GW.bmp"	RIJXROV.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
3908	RIJXROV.exe
3908	RIJXROV.exe
3908	RIJXROV.exe
3908	RIJXROV.exe
3908	RIJXROV.exe
3908	RIJXROV.exe

Modifies Control Panel 3 IoCs

evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Control Panel\International	RIJXROV.exe
Key created	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Control Panel\Desktop	RIJXROV.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Control Panel\Desktop\WallpaperStyle = "10"	RIJXROV.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3908	RIJXROV.exe
3908	RIJXROV.exe
3908	RIJXROV.exe
3908	RIJXROV.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeBackupPrivilege	3908	RIJXROV.exe
Token: SeDebugPrivilege	3908	RIJXROV.exe
Token: 36	3908	RIJXROV.exe
Token: SeImpersonatePrivilege	3908	RIJXROV.exe
Token: SeIncBasePriorityPrivilege	3908	RIJXROV.exe
Token: SeIncreaseQuotaPrivilege	3908	RIJXROV.exe
Token: 33	3908	RIJXROV.exe
Token: SeManageVolumePrivilege	3908	RIJXROV.exe
Token: SeProfSingleProcessPrivilege	3908	RIJXROV.exe
Token: SeRestorePrivilege	3908	RIJXROV.exe
Token: SeSecurityPrivilege	3908	RIJXROV.exe
Token: SeSystemProfilePrivilege	3908	RIJXROV.exe
Token: SeTakeOwnershipPrivilege	3908	RIJXROV.exe
Token: SeShutdownPrivilege	3908	RIJXROV.exe
Token: SeBackupPrivilege	2676	vssvc.exe
Token: SeRestorePrivilege	2676	vssvc.exe
Token: SeAuditPrivilege	2676	vssvc.exe

C:\Users\Admin\AppData\Local\Temp\RIJXROV.exe
"C:\Users\Admin\AppData\Local\Temp\RIJXROV.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3908

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2676

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

Replay Monitor

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Downloads

memory/3908-115-0x0000000000540000-0x000000000068A000-memory.dmp

Filesize
1.3MB

Download
memory/3908-116-0x0000000000540000-0x000000000068A000-memory.dmp

Filesize
1.3MB

Download

Analysis

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