blackmatter | c728e3a0d4a293e44314d663945354427848c220d05d5d87cdedd9995fee3dfe

General

Target

c728e3a0d4a293e44314d663945354427848c220d05d5d87cdedd9995fee3dfe.dll
Size

67KB
MD5

639bb7abbd9bc6a9c275d0bf9555b610
SHA1

e4831da0e8fe5f0a01cd42693e607bc611423c16
SHA256

c728e3a0d4a293e44314d663945354427848c220d05d5d87cdedd9995fee3dfe
SHA512

f01621fab7ba598b80d52675c20d0d4bb4749b91df3298ee1bd6d6d410eb54d091677f85a2d4673eb9dc3d8cff6f4a328735226de0f5a01bd314dbe6d9af92aa

Score

10^/10

blackmatter ransomware

Malware Config

Extracted

Path

C:\AVx2lZV2X.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 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/GDBJS76DH3D4IKQD2QO7R. >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/GDBJS76DH3D4IKQD2QO7R

Signatures

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

Blocklisted process makes network request 6 IoCs

flow	pid	Process
2	3116	rundll32.exe
4	3116	rundll32.exe
6	3116	rundll32.exe
8	3116	rundll32.exe
10	3116	rundll32.exe
11	3116	rundll32.exe

Modifies extensions of user files 18 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\CheckpointGroup.crw.AVx2lZV2X	rundll32.exe
File renamed	C:\Users\Admin\Pictures\DismountLimit.raw => C:\Users\Admin\Pictures\DismountLimit.raw.AVx2lZV2X	rundll32.exe
File renamed	C:\Users\Admin\Pictures\ResumeRename.crw => C:\Users\Admin\Pictures\ResumeRename.crw.AVx2lZV2X	rundll32.exe
File renamed	C:\Users\Admin\Pictures\ResumeWatch.tiff => C:\Users\Admin\Pictures\ResumeWatch.tiff.AVx2lZV2X	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeWatch.tiff.AVx2lZV2X	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\InitializeUninstall.crw.AVx2lZV2X	rundll32.exe
File renamed	C:\Users\Admin\Pictures\SubmitSwitch.png => C:\Users\Admin\Pictures\SubmitSwitch.png.AVx2lZV2X	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\SubmitSwitch.png.AVx2lZV2X	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\SuspendConvertTo.png.AVx2lZV2X	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\UnlockBlock.tiff	rundll32.exe
File renamed	C:\Users\Admin\Pictures\CheckpointGroup.crw => C:\Users\Admin\Pictures\CheckpointGroup.crw.AVx2lZV2X	rundll32.exe
File renamed	C:\Users\Admin\Pictures\InitializeUninstall.crw => C:\Users\Admin\Pictures\InitializeUninstall.crw.AVx2lZV2X	rundll32.exe
File renamed	C:\Users\Admin\Pictures\SuspendConvertTo.png => C:\Users\Admin\Pictures\SuspendConvertTo.png.AVx2lZV2X	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\DismountLimit.raw.AVx2lZV2X	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeRename.crw.AVx2lZV2X	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeWatch.tiff	rundll32.exe
File renamed	C:\Users\Admin\Pictures\UnlockBlock.tiff => C:\Users\Admin\Pictures\UnlockBlock.tiff.AVx2lZV2X	rundll32.exe
File opened for modification	C:\Users\Admin\Pictures\UnlockBlock.tiff.AVx2lZV2X	rundll32.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:	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3116	rundll32.exe

Modifies Control Panel 1 IoCs

evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\International	rundll32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3116	rundll32.exe
3116	rundll32.exe
3116	rundll32.exe
3116	rundll32.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeBackupPrivilege	3116	rundll32.exe
Token: SeDebugPrivilege	3116	rundll32.exe
Token: 36	3116	rundll32.exe
Token: SeImpersonatePrivilege	3116	rundll32.exe
Token: SeIncBasePriorityPrivilege	3116	rundll32.exe
Token: SeIncreaseQuotaPrivilege	3116	rundll32.exe
Token: 33	3116	rundll32.exe
Token: SeManageVolumePrivilege	3116	rundll32.exe
Token: SeProfSingleProcessPrivilege	3116	rundll32.exe
Token: SeRestorePrivilege	3116	rundll32.exe
Token: SeSecurityPrivilege	3116	rundll32.exe
Token: SeSystemProfilePrivilege	3116	rundll32.exe
Token: SeTakeOwnershipPrivilege	3116	rundll32.exe
Token: SeShutdownPrivilege	3116	rundll32.exe
Token: SeBackupPrivilege	4108	vssvc.exe
Token: SeRestorePrivilege	4108	vssvc.exe
Token: SeAuditPrivilege	4108	vssvc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 3116	4076	rundll32.exe	70
PID 4076 wrote to memory of 3116	4076	rundll32.exe	70
PID 4076 wrote to memory of 3116	4076	rundll32.exe	70

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c728e3a0d4a293e44314d663945354427848c220d05d5d87cdedd9995fee3dfe.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c728e3a0d4a293e44314d663945354427848c220d05d5d87cdedd9995fee3dfe.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Modifies extensions of user files
  - Enumerates connected drives
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Modifies Control Panel
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3116

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4108

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3116-116-0x00000000040A3000-0x00000000040A5000-memory.dmp

Filesize
8KB

Download
memory/3116-117-0x00000000040A0000-0x00000000040A1000-memory.dmp

Filesize
4KB

Download

Analysis

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