blackmatter | 0d5d488ef072ca1c59920e5641758559deac8361ce3231e51f363aa8785a0b80

Analysis

max time kernel
56s
max time network
57s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17-02-2024 16:01

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General

Target

c22a6401a415fe642f3d96f38a887dd8ad23dd83a9255ee89d9adf4650ab98da.ps1
Size

915KB
MD5

001bfe6f72fe64660ba498107c658bdc
SHA1

0946baf23e867f2564302b60f777db72a1244a30
SHA256

c22a6401a415fe642f3d96f38a887dd8ad23dd83a9255ee89d9adf4650ab98da
SHA512

32836eff8285a5a301be0b4410d34a73d99d4c04b38b0b67b937c1bc5ae6ab2d033a97089b6588c245371dfd8e95c420c8bbd3862a632a828122861e0ec839d3
SSDEEP

6144:jOi6qCQJ8O7sgPToY2z/VfuK5mUYfqssJkTZICCMg9ss2T4+FlS3NLbjADcx8xf:6i6qNmQ2ztfl5r/kFIHx9n7X3JjADcw

Score

10^/10

blackmatter a89e0e2e31db3e31a1e7a9630375f437 ransomware

Malware Config

Extracted

Family

blackmatter

Version

2.0

Botnet

a89e0e2e31db3e31a1e7a9630375f437

https://fluentzip.org

http://fluentzip.org

Attributes

attempt_auth
false
create_mutex
true
encrypt_network_shares
true
exfiltrate
true
mount_volumes
true

rsa_pubkey.base64

aes.base64

Extracted

Path

F:\PUOTcnKTQ.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/O1E1HJ9H8JNKNNHC8 >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/O1E1HJ9H8JNKNNHC8

Signatures

BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
ransomware blackmatter
Renames multiple (125) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\PUOTcnKTQ.bmp"	powershell.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\PUOTcnKTQ.bmp"	powershell.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
2532	powershell.exe
2532	powershell.exe
2532	powershell.exe
2532	powershell.exe
2532	powershell.exe
2532	powershell.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1792	powershell.exe
1792	powershell.exe
2532	powershell.exe
2532	powershell.exe
2532	powershell.exe
2532	powershell.exe
2532	powershell.exe
2532	powershell.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	1792	powershell.exe
Token: SeDebugPrivilege	2532	powershell.exe
Token: SeBackupPrivilege	2532	powershell.exe
Token: SeDebugPrivilege	2532	powershell.exe
Token: 36	2532	powershell.exe
Token: SeImpersonatePrivilege	2532	powershell.exe
Token: SeIncBasePriorityPrivilege	2532	powershell.exe
Token: SeIncreaseQuotaPrivilege	2532	powershell.exe
Token: 33	2532	powershell.exe
Token: SeManageVolumePrivilege	2532	powershell.exe
Token: SeProfSingleProcessPrivilege	2532	powershell.exe
Token: SeRestorePrivilege	2532	powershell.exe
Token: SeSecurityPrivilege	2532	powershell.exe
Token: SeSystemProfilePrivilege	2532	powershell.exe
Token: SeTakeOwnershipPrivilege	2532	powershell.exe
Token: SeShutdownPrivilege	2532	powershell.exe
Token: SeBackupPrivilege	1884	vssvc.exe
Token: SeRestorePrivilege	1884	vssvc.exe
Token: SeAuditPrivilege	1884	vssvc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 2532	1792	powershell.exe	87
PID 1792 wrote to memory of 2532	1792	powershell.exe	87
PID 1792 wrote to memory of 2532	1792	powershell.exe	87

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\c22a6401a415fe642f3d96f38a887dd8ad23dd83a9255ee89d9adf4650ab98da.ps1
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1792
- 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\c22a6401a415fe642f3d96f38a887dd8ad23dd83a9255ee89d9adf4650ab98da.ps1
  2⤵
  - Sets desktop wallpaper using registry
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2532

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
77e24115766bf3bf2216bcf88f49aac4

SHA1
bed004d438fd928682ecba6ceea3d0dd969ffdad

SHA256
fd371ed4e97e72922542a6c219e14a54ffda6b5500e9f12ce7ae72af0c74b341

SHA512
c3206775225e8ef24586e5fa789bb8909af54d4dd5b9389ac6b67bf9bdb692b137502e8957b46ae6b012abfcde4d2af04e21041c6db66c31afe5d7f657342462

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nzc23sqs.zjo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
F:\PUOTcnKTQ.README.txt

Filesize
1KB

MD5
0418b5109e0dd206abbab1579e3c9618

SHA1
40c28fc6d87411ba675abc0e441d74e6ab173b4e

SHA256
da44a7bc46672b2187e0ad91c5bbb19fed30e63f7ca4a2f0f6c20f7435f9453f

SHA512
9fcb20dec695dde76c6e2e96567f9d1103c81a77c4f1f7e0f7b2702489b448f9bb36cac511e736b53ef3775706ad839e80beb1555e0df6dbd17424f298be531e

Download Submit
memory/1792-10-0x00007FFA76D40000-0x00007FFA77801000-memory.dmp

Filesize
10.8MB

Download
memory/1792-11-0x00000274216F0000-0x0000027421700000-memory.dmp

Filesize
64KB

Download
memory/1792-12-0x00000274216F0000-0x0000027421700000-memory.dmp

Filesize
64KB

Download
memory/1792-13-0x00000274216F0000-0x0000027421700000-memory.dmp

Filesize
64KB

Download
memory/1792-16-0x00007FFA76D40000-0x00007FFA77801000-memory.dmp

Filesize
10.8MB

Download
memory/1792-0-0x00000274220B0000-0x00000274220D2000-memory.dmp

Filesize
136KB

Download
memory/2532-52-0x000000000C870000-0x000000000C88E000-memory.dmp

Filesize
120KB

Download
memory/2532-56-0x000000000C9A0000-0x000000000C9AA000-memory.dmp

Filesize
40KB

Download
memory/2532-21-0x0000000005640000-0x0000000005662000-memory.dmp

Filesize
136KB

Download
memory/2532-22-0x00000000057E0000-0x0000000005846000-memory.dmp

Filesize
408KB

Download
memory/2532-23-0x0000000005850000-0x00000000058B6000-memory.dmp

Filesize
408KB

Download
memory/2532-20-0x0000000005930000-0x0000000005F58000-memory.dmp

Filesize
6.2MB

Download
memory/2532-34-0x0000000006060000-0x00000000063B4000-memory.dmp

Filesize
3.3MB

Download
memory/2532-35-0x0000000006500000-0x000000000651E000-memory.dmp

Filesize
120KB

Download
memory/2532-36-0x00000000065A0000-0x00000000065EC000-memory.dmp

Filesize
304KB

Download
memory/2532-37-0x000000000CD80000-0x000000000D3FA000-memory.dmp

Filesize
6.5MB

Download
memory/2532-38-0x0000000006B10000-0x0000000006B2A000-memory.dmp

Filesize
104KB

Download
memory/2532-39-0x000000007F990000-0x000000007F9A0000-memory.dmp

Filesize
64KB

Download
memory/2532-40-0x000000000C830000-0x000000000C862000-memory.dmp

Filesize
200KB

Download
memory/2532-41-0x0000000070950000-0x000000007099C000-memory.dmp

Filesize
304KB

Download
memory/2532-42-0x0000000070AD0000-0x0000000070E24000-memory.dmp

Filesize
3.3MB

Download
memory/2532-18-0x0000000002BC0000-0x0000000002BF6000-memory.dmp

Filesize
216KB

Download
memory/2532-53-0x00000000032A0000-0x00000000032B0000-memory.dmp

Filesize
64KB

Download
memory/2532-54-0x00000000032A0000-0x00000000032B0000-memory.dmp

Filesize
64KB

Download
memory/2532-55-0x000000000C8A0000-0x000000000C943000-memory.dmp

Filesize
652KB

Download
memory/2532-19-0x00000000032A0000-0x00000000032B0000-memory.dmp

Filesize
64KB

Download
memory/2532-57-0x000000000CB90000-0x000000000CC26000-memory.dmp

Filesize
600KB

Download
memory/2532-58-0x000000000CB00000-0x000000000CB11000-memory.dmp

Filesize
68KB

Download
memory/2532-59-0x000000000CB30000-0x000000000CB3E000-memory.dmp

Filesize
56KB

Download
memory/2532-60-0x000000000CCB0000-0x000000000CCC4000-memory.dmp

Filesize
80KB

Download
memory/2532-61-0x000000000CCF0000-0x000000000CD0A000-memory.dmp

Filesize
104KB

Download
memory/2532-62-0x000000000CB80000-0x000000000CB88000-memory.dmp

Filesize
32KB

Download
memory/2532-63-0x000000000E460000-0x000000000E479000-memory.dmp

Filesize
100KB

Download
memory/2532-69-0x000000000E460000-0x000000000E479000-memory.dmp

Filesize
100KB

Download
memory/2532-70-0x000000000E810000-0x000000000E820000-memory.dmp

Filesize
64KB

Download
memory/2532-72-0x000000000E810000-0x000000000E820000-memory.dmp

Filesize
64KB

Download
memory/2532-91-0x000000000E460000-0x000000000E479000-memory.dmp

Filesize
100KB

Download
memory/2532-92-0x000000000E460000-0x000000000E479000-memory.dmp

Filesize
100KB

Download
memory/2532-97-0x000000000E460000-0x000000000E479000-memory.dmp

Filesize
100KB

Download
memory/2532-113-0x000000000E460000-0x000000000E479000-memory.dmp

Filesize
100KB

Download
memory/2532-17-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/2532-330-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download
memory/2532-328-0x000000000E460000-0x000000000E479000-memory.dmp

Filesize
100KB

Download
memory/2532-313-0x000000000E460000-0x000000000E479000-memory.dmp

Filesize
100KB

Download
memory/2532-334-0x000000000E460000-0x000000000E479000-memory.dmp

Filesize
100KB

Download
memory/2532-335-0x0000000074B30000-0x00000000752E0000-memory.dmp

Filesize
7.7MB

Download