blackmatter | 6155637f8b98426258f5d4321bce4104df56c7771967813d61362c2118632a7b

General

Target

6155637f8b98426258f5d4321bce4104df56c7771967813d61362c2118632a7b.ps1
Size

887KB
MD5

66d8f3d21088cea87dd99f37efb92795
SHA1

ba7cad1cbb5204ac8d2ddb3d399738657f08e209
SHA256

6155637f8b98426258f5d4321bce4104df56c7771967813d61362c2118632a7b
SHA512

df0cd4d9a9c3337aed6a62bce14ddb3c6001e215ab956f7f0e98d9a9c7ae69ec24fc2aff48cc5899312f8473f397f9d9bcf554b5b9ef626a8c95f257f5f23554

Score

10^/10

blackmatter ransomware

Malware Config

Extracted

Path

C:\gawreXkrr.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 11 IoCs

flow	pid	Process
5	1764	powershell.exe
7	1764	powershell.exe
9	1764	powershell.exe
11	1764	powershell.exe
13	1764	powershell.exe
14	1764	powershell.exe
15	1764	powershell.exe
17	1764	powershell.exe
18	1764	powershell.exe
19	1764	powershell.exe
20	1764	powershell.exe

Modifies extensions of user files 7 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\ResolveHide.tif => C:\Users\Admin\Pictures\ResolveHide.tif.gawreXkrr	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\ResolveHide.tif.gawreXkrr	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\UndoConvert.tiff	powershell.exe
File renamed	C:\Users\Admin\Pictures\UndoConvert.tiff => C:\Users\Admin\Pictures\UndoConvert.tiff.gawreXkrr	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\UndoConvert.tiff.gawreXkrr	powershell.exe
File renamed	C:\Users\Admin\Pictures\DisconnectRegister.png => C:\Users\Admin\Pictures\DisconnectRegister.png.gawreXkrr	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\DisconnectRegister.png.gawreXkrr	powershell.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-1-5-21-103686315-404690609-2047157615-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\gawreXkrr.bmp"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\gawreXkrr.bmp"	powershell.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1764	powershell.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1900	powershell.exe
1900	powershell.exe
1900	powershell.exe
1764	powershell.exe
1764	powershell.exe
1764	powershell.exe
1764	powershell.exe
1764	powershell.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	powershell.exe
Token: SeDebugPrivilege	1764	powershell.exe
Token: SeBackupPrivilege	1764	powershell.exe
Token: SeDebugPrivilege	1764	powershell.exe
Token: 36	1764	powershell.exe
Token: SeImpersonatePrivilege	1764	powershell.exe
Token: SeIncBasePriorityPrivilege	1764	powershell.exe
Token: SeIncreaseQuotaPrivilege	1764	powershell.exe
Token: 33	1764	powershell.exe
Token: SeManageVolumePrivilege	1764	powershell.exe
Token: SeProfSingleProcessPrivilege	1764	powershell.exe
Token: SeRestorePrivilege	1764	powershell.exe
Token: SeSecurityPrivilege	1764	powershell.exe
Token: SeSystemProfilePrivilege	1764	powershell.exe
Token: SeTakeOwnershipPrivilege	1764	powershell.exe
Token: SeShutdownPrivilege	1764	powershell.exe
Token: SeBackupPrivilege	1748	vssvc.exe
Token: SeRestorePrivilege	1748	vssvc.exe
Token: SeAuditPrivilege	1748	vssvc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 1764	1900	powershell.exe	29
PID 1900 wrote to memory of 1764	1900	powershell.exe	29
PID 1900 wrote to memory of 1764	1900	powershell.exe	29
PID 1900 wrote to memory of 1764	1900	powershell.exe	29

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\6155637f8b98426258f5d4321bce4104df56c7771967813d61362c2118632a7b.ps1
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -ex bypass -NonI C:\Users\Admin\AppData\Local\Temp\6155637f8b98426258f5d4321bce4104df56c7771967813d61362c2118632a7b.ps1
  2⤵
  - Blocklisted process makes network request
  - Modifies extensions of user files
  - Sets desktop wallpaper using registry
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1764

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1748

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1764-63-0x0000000075AB1000-0x0000000075AB3000-memory.dmp

Filesize
8KB

Download
memory/1764-69-0x000000000B0F6000-0x000000000B0F7000-memory.dmp

Filesize
4KB

Download
memory/1764-68-0x000000000B0E0000-0x000000000B0E1000-memory.dmp

Filesize
4KB

Download
memory/1764-67-0x000000000B0E5000-0x000000000B0F6000-memory.dmp

Filesize
68KB

Download
memory/1764-66-0x00000000022A0000-0x0000000002EEA000-memory.dmp

Filesize
12.3MB

Download
memory/1764-65-0x00000000022A0000-0x0000000002EEA000-memory.dmp

Filesize
12.3MB

Download
memory/1764-64-0x00000000022A0000-0x0000000002EEA000-memory.dmp

Filesize
12.3MB

Download
memory/1900-58-0x0000000002900000-0x0000000002902000-memory.dmp

Filesize
8KB

Download
memory/1900-61-0x000000000290B000-0x000000000292A000-memory.dmp

Filesize
124KB

Download
memory/1900-60-0x0000000002904000-0x0000000002907000-memory.dmp

Filesize
12KB

Download
memory/1900-59-0x0000000002902000-0x0000000002904000-memory.dmp

Filesize
8KB

Download
memory/1900-55-0x000007FEFC5C1000-0x000007FEFC5C3000-memory.dmp

Filesize
8KB

Download
memory/1900-57-0x000000001B770000-0x000000001BA6F000-memory.dmp

Filesize
3.0MB

Download
memory/1900-56-0x000007FEF3420000-0x000007FEF3F7D000-memory.dmp

Filesize
11.4MB

Download

Analysis

Sharing