blackmatter | 9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58

General

Target

v2c.exe
Size

95KB
MD5

757139e76fae876ae50dd2c3ac11d5d8
SHA1

1c150493014d29c1f8a51e397e527f7d7c1476c7
SHA256

9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58
SHA512

852febe5dc991fa6dc5ff994b2de18548e98a2f53de903a480ed871d9d25413159b167a3c0ff39175bbf7c339604bb1eccc2f9425415ab16089bc56e3e998974

Score

10^/10

blackmatter ransomware

Malware Config

Extracted

Path

C:\WRLMMTHME.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 large amount 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. >>> 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://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/U6H6RKDF6W3B8XOWL >> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/U6H6RKDF6W3B8XOWL

Signatures

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

Modifies extensions of user files 5 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\SendRevoke.png.WRLMMTHME	v2c.exe
File renamed	C:\Users\Admin\Pictures\PublishConvertFrom.png => C:\Users\Admin\Pictures\PublishConvertFrom.png.WRLMMTHME	v2c.exe
File opened for modification	C:\Users\Admin\Pictures\PublishConvertFrom.png.WRLMMTHME	v2c.exe
File opened for modification	C:\Users\Admin\Pictures\RedoUnpublish.tiff	v2c.exe
File renamed	C:\Users\Admin\Pictures\SendRevoke.png => C:\Users\Admin\Pictures\SendRevoke.png.WRLMMTHME	v2c.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:	v2c.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-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\WRLMMTHME.bmp"	v2c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\WRLMMTHME.bmp"	v2c.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
484	v2c.exe
484	v2c.exe
484	v2c.exe
484	v2c.exe
484	v2c.exe
484	v2c.exe

Modifies Control Panel 3 IoCs

evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\International	v2c.exe
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop	v2c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\WallpaperStyle = "10"	v2c.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.WRLMMTHME	v2c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.WRLMMTHME\ = "WRLMMTHME"	v2c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WRLMMTHME\DefaultIcon	v2c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WRLMMTHME	v2c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WRLMMTHME\DefaultIcon\ = "C:\\ProgramData\\WRLMMTHME.ico"	v2c.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
484	v2c.exe
484	v2c.exe
484	v2c.exe
484	v2c.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeBackupPrivilege	484	v2c.exe
Token: SeDebugPrivilege	484	v2c.exe
Token: 36	484	v2c.exe
Token: SeImpersonatePrivilege	484	v2c.exe
Token: SeIncBasePriorityPrivilege	484	v2c.exe
Token: SeIncreaseQuotaPrivilege	484	v2c.exe
Token: 33	484	v2c.exe
Token: SeManageVolumePrivilege	484	v2c.exe
Token: SeProfSingleProcessPrivilege	484	v2c.exe
Token: SeRestorePrivilege	484	v2c.exe
Token: SeSecurityPrivilege	484	v2c.exe
Token: SeSystemProfilePrivilege	484	v2c.exe
Token: SeTakeOwnershipPrivilege	484	v2c.exe
Token: SeShutdownPrivilege	484	v2c.exe
Token: SeBackupPrivilege	552	vssvc.exe
Token: SeRestorePrivilege	552	vssvc.exe
Token: SeAuditPrivilege	552	vssvc.exe

C:\Users\Admin\AppData\Local\Temp\v2c.exe
"C:\Users\Admin\AppData\Local\Temp\v2c.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:484

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:552

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

Loading Replay Monitor...

Downloads

memory/484-116-0x0000000003170000-0x0000000003171000-memory.dmp

Filesize
4KB

Download
memory/484-115-0x0000000003173000-0x0000000003175000-memory.dmp

Filesize
8KB

Download
memory/484-117-0x0000000003175000-0x0000000003176000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing