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:\1rWCqamCt.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 13 IoCs

flow	pid	Process
5	1740	powershell.exe
8	1740	powershell.exe
10	1740	powershell.exe
11	1740	powershell.exe
12	1740	powershell.exe
13	1740	powershell.exe
14	1740	powershell.exe
16	1740	powershell.exe
17	1740	powershell.exe
18	1740	powershell.exe
19	1740	powershell.exe
20	1740	powershell.exe
21	1740	powershell.exe

Modifies extensions of user files 16 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\InvokeBackup.png => C:\Users\Admin\Pictures\InvokeBackup.png.1rWCqamCt	powershell.exe
File renamed	C:\Users\Admin\Pictures\TestUnregister.crw => C:\Users\Admin\Pictures\TestUnregister.crw.1rWCqamCt	powershell.exe
File renamed	C:\Users\Admin\Pictures\UseReset.tif => C:\Users\Admin\Pictures\UseReset.tif.1rWCqamCt	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\ConfirmOut.tiff	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\CopyUnregister.tiff	powershell.exe
File renamed	C:\Users\Admin\Pictures\PublishComplete.raw => C:\Users\Admin\Pictures\PublishComplete.raw.1rWCqamCt	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\UseReset.tif.1rWCqamCt	powershell.exe
File renamed	C:\Users\Admin\Pictures\ConfirmOut.tiff => C:\Users\Admin\Pictures\ConfirmOut.tiff.1rWCqamCt	powershell.exe
File renamed	C:\Users\Admin\Pictures\CopyUnregister.tiff => C:\Users\Admin\Pictures\CopyUnregister.tiff.1rWCqamCt	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\TestUnregister.crw.1rWCqamCt	powershell.exe
File renamed	C:\Users\Admin\Pictures\OpenMove.tif => C:\Users\Admin\Pictures\OpenMove.tif.1rWCqamCt	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\OpenMove.tif.1rWCqamCt	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\PublishComplete.raw.1rWCqamCt	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\ConfirmOut.tiff.1rWCqamCt	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\CopyUnregister.tiff.1rWCqamCt	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\InvokeBackup.png.1rWCqamCt	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-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\1rWCqamCt.bmp"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\1rWCqamCt.bmp"	powershell.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1740	powershell.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
760	powershell.exe
1740	powershell.exe
1740	powershell.exe
1740	powershell.exe
1740	powershell.exe
1740	powershell.exe
1740	powershell.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	760	powershell.exe
Token: SeDebugPrivilege	1740	powershell.exe
Token: SeBackupPrivilege	1740	powershell.exe
Token: SeDebugPrivilege	1740	powershell.exe
Token: 36	1740	powershell.exe
Token: SeImpersonatePrivilege	1740	powershell.exe
Token: SeIncBasePriorityPrivilege	1740	powershell.exe
Token: SeIncreaseQuotaPrivilege	1740	powershell.exe
Token: 33	1740	powershell.exe
Token: SeManageVolumePrivilege	1740	powershell.exe
Token: SeProfSingleProcessPrivilege	1740	powershell.exe
Token: SeRestorePrivilege	1740	powershell.exe
Token: SeSecurityPrivilege	1740	powershell.exe
Token: SeSystemProfilePrivilege	1740	powershell.exe
Token: SeTakeOwnershipPrivilege	1740	powershell.exe
Token: SeShutdownPrivilege	1740	powershell.exe
Token: SeBackupPrivilege	1072	vssvc.exe
Token: SeRestorePrivilege	1072	vssvc.exe
Token: SeAuditPrivilege	1072	vssvc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 760 wrote to memory of 1740	760	powershell.exe	30
PID 760 wrote to memory of 1740	760	powershell.exe	30
PID 760 wrote to memory of 1740	760	powershell.exe	30
PID 760 wrote to memory of 1740	760	powershell.exe	30

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:760
- 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:1740

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1072

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

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Downloads

memory/760-59-0x000007FEFB531000-0x000007FEFB533000-memory.dmp

Filesize
8KB

Download
memory/760-60-0x0000000002370000-0x0000000002371000-memory.dmp

Filesize
4KB

Download
memory/760-61-0x000000001AD60000-0x000000001AD61000-memory.dmp

Filesize
4KB

Download
memory/760-62-0x00000000023B0000-0x00000000023B1000-memory.dmp

Filesize
4KB

Download
memory/760-63-0x000000001ACE0000-0x000000001ACE2000-memory.dmp

Filesize
8KB

Download
memory/760-64-0x000000001ACE4000-0x000000001ACE6000-memory.dmp

Filesize
8KB

Download
memory/760-65-0x00000000023E0000-0x00000000023E1000-memory.dmp

Filesize
4KB

Download
memory/760-66-0x000000001C560000-0x000000001C561000-memory.dmp

Filesize
4KB

Download
memory/760-67-0x000000001AB80000-0x000000001AB81000-memory.dmp

Filesize
4KB

Download
memory/1740-73-0x0000000002580000-0x0000000002581000-memory.dmp

Filesize
4KB

Download
memory/1740-84-0x000000000A2F0000-0x000000000A2F1000-memory.dmp

Filesize
4KB

Download
memory/1740-71-0x0000000004700000-0x0000000004701000-memory.dmp

Filesize
4KB

Download
memory/1740-72-0x0000000002110000-0x0000000002D5A000-memory.dmp

Filesize
12.3MB

Download
memory/1740-69-0x0000000075051000-0x0000000075053000-memory.dmp

Filesize
8KB

Download
memory/1740-74-0x0000000005240000-0x0000000005241000-memory.dmp

Filesize
4KB

Download
memory/1740-78-0x0000000007130000-0x0000000007131000-memory.dmp

Filesize
4KB

Download
memory/1740-83-0x00000000071E0000-0x00000000071E1000-memory.dmp

Filesize
4KB

Download
memory/1740-70-0x0000000000B40000-0x0000000000B41000-memory.dmp

Filesize
4KB

Download
memory/1740-85-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1740-92-0x000000000A3D0000-0x000000000A3D1000-memory.dmp

Filesize
4KB

Download
memory/1740-93-0x000000000A4E0000-0x000000000A4E1000-memory.dmp

Filesize
4KB

Download
memory/1740-94-0x000000000A5B0000-0x000000000A5B1000-memory.dmp

Filesize
4KB

Download
memory/1740-108-0x000000000A6C0000-0x000000000A6C1000-memory.dmp

Filesize
4KB

Download
memory/1740-109-0x000000000A6D0000-0x000000000A6D1000-memory.dmp

Filesize
4KB

Download
memory/1740-110-0x000000000DCE5000-0x000000000DCF6000-memory.dmp

Filesize
68KB

Download
memory/1740-111-0x000000000DCE0000-0x000000000DCE1000-memory.dmp

Filesize
4KB

Download
memory/1740-112-0x000000000DCF6000-0x000000000DCF7000-memory.dmp

Filesize
4KB

Download

Analysis

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