blackmatter | c644cbce9a802252e9021e43959a90015538f3e8e40cbe87a518b9458389c4a8

Resubmissions

25/03/2025, 13:19

250325-qkkrrszps5 10

05/02/2025, 11:22

250205-ngk71strbx 10

25/06/2024, 15:43

240625-s6cz6a1gnj 10

25/06/2024, 15:17

240625-sn4p6axdma 10

Analysis

max time kernel
139s
max time network
203s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
05/02/2025, 11:22

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General

Target

706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Size

79KB
MD5

62a1b4d4b461f4eaae91c70727f71604
SHA1

1ced9a7e62aa65faa03eb1ad2bc786e9d9b5f6c2
SHA256

706f3eec328e91ff7f66c8f0a2fb9b556325c153a329a2062dc85879c540839d
SHA512

d14f989f5f54663c3ea63526a000e8db5d172046e37f412ed47cd31eb14db071b515b854bbb3ab3d2f41f936b6962583aaa0b3ef1236aa2506148813f66ad542
SSDEEP

1536:DnICS4ArFnRoHhcVyid9EZZoi+zQ95f8IwdON:QZnmqVyq9EN+M95bwE

Score

10^/10

blackmatter discovery ransomware

Malware Config

Extracted

Path

C:\tK5kEBBkr.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 1000 GB 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. Blog post link: http://blackmax7su6mbwtcyo3xwtpfxpm356jjqrs34y4crcytpw7mifuedyd.onion/72oJjilhMD/6d067a8741848166fa2ac1e69472280c >>> 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/X3452I2VDTHM30QX >> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://blackmax7su6mbwtcyo3xwtpfxpm356jjqrs34y4crcytpw7mifuedyd.onion/72oJjilhMD/6d067a8741848166fa2ac1e69472280c

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/X3452I2VDTHM30QX

Signatures

BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
ransomware blackmatter
Blackmatter family
blackmatter
Renames multiple (112) 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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\tK5kEBBkr.bmp"	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\tK5kEBBkr.bmp"	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe

Modifies Control Panel 3 IoCs

defense_evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\Desktop	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\Desktop\WallpaperStyle = "10"	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Key created	\REGISTRY\USER\S-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeBackupPrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeDebugPrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: 36	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeImpersonatePrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeIncBasePriorityPrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeIncreaseQuotaPrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: 33	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeManageVolumePrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeProfSingleProcessPrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeRestorePrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeSecurityPrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeSystemProfilePrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeTakeOwnershipPrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeShutdownPrivilege	2908	706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
Token: SeBackupPrivilege	1840	vssvc.exe
Token: SeRestorePrivilege	1840	vssvc.exe
Token: SeAuditPrivilege	1840	vssvc.exe

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

C:\Users\Admin\AppData\Local\Temp\706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe
C:\Users\Admin\AppData\Local\Temp\706F3EEC328E91FF7F66C8F0A2FB9B556325C153A329A2062DC85879C540839D.exe dsrm -subtree -noprompt -c user"http://+:443"
1⤵
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2908

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

C:\tK5kEBBkr.README.txt

Filesize
1KB

MD5
1ba53a2b703aeb54647185c18cc1ddbd

SHA1
0bf081ef67e7c9fb4e55c53f56aa332a17740a7a

SHA256
74e29716d6211d4c26ab0c3184affef6f275bfbfab2ec4dd4fb776fb76065173

SHA512
15f7a5870ad2decf6b09c56a6b5e3f5803e5071749fd4638470c19e02ef1fd0c4438e8f7e62a9f7b8792cd1893e748def44a0a8026f10c4a0268feecae9cf617

Download Submit
memory/2908-0-0x00000000026F0000-0x0000000002700000-memory.dmp

Filesize
64KB

Download
memory/2908-1-0x00000000026F0000-0x0000000002700000-memory.dmp

Filesize
64KB

Download