blackmatter | c5741701b3866459dd1ffa2477cfd8776713612912693a5897f78aac795d23e9

Resubmissions

28-07-2024 16:38

240728-t5tryssgmm 10

07-07-2024 14:07

240707-rfgd8atekm 10

07-07-2024 14:07

240707-re689awdpe 10

13-09-2022 17:54

220913-wg1lpsgbg7 10

Analysis

max time kernel
119s
max time network
128s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
28-07-2024 16:38

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General

Target

RansomwareSamples/BlackMatter_02_08_2021_67KB.exe
Size

67KB
MD5

598c53bfef81e489375f09792e487f1a
SHA1

80a29bd2c349a8588edf42653ed739054f9a10f5
SHA256

22d7d67c3af10b1a37f277ebabe2d1eb4fd25afbd6437d4377400e148bcc08d6
SHA512

6a82ad5009588d2fa343bef8d9d2a02e2e76eec14979487a929a96a6b6965e82265a69ef8dd29a01927e9713468de3aedd7b5ee5e79839a1a50649855a160c35
SSDEEP

1536:RzICS4AT6GxdEe+TOdincJXvKv8Zg3kl:qR7auJXSkZg3C

Score

10^/10

blackmatter discovery ransomware

Malware Config

Extracted

Path

C:\mINyMTFyg.README.txt

Family

blackmatter

Ransom Note

~+ * + ' BLACK | () .-.,='``'=. - o - '=/_ \ | * | '=._ | \ `=./`, ' . '=.__.=' `=' * + Matter + O * ' . >>> What happens? Your network is encrypted, and currently not operational. We have downloaded 1TB from your fileserver. 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. >> Data leak includes 1. Full emloyeers personal data 2. Network information 3. Schemes of buildings, active project information, architect details and contracts, 4. Finance info >>> How to contact with us? 1. Download and install TOR Browser (https://www.torproject.org/). 2. Open http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/7NT6LXKC1XQHW5039BLOV. >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/7NT6LXKC1XQHW5039BLOV

Signatures

BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
ransomware blackmatter
Renames multiple (163) 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

Processes:

BlackMatter_02_08_2021_67KB.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\mINyMTFyg.bmp"	BlackMatter_02_08_2021_67KB.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\mINyMTFyg.bmp"	BlackMatter_02_08_2021_67KB.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

Processes:

BlackMatter_02_08_2021_67KB.exe

pid	process
2112	BlackMatter_02_08_2021_67KB.exe
2112	BlackMatter_02_08_2021_67KB.exe
2112	BlackMatter_02_08_2021_67KB.exe
2112	BlackMatter_02_08_2021_67KB.exe
2112	BlackMatter_02_08_2021_67KB.exe
2112	BlackMatter_02_08_2021_67KB.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

Processes:

BlackMatter_02_08_2021_67KB.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language BlackMatter_02_08_2021_67KB.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BlackMatter_02_08_2021_67KB.exe

Modifies Control Panel 3 IoCs

evasion

Processes:

BlackMatter_02_08_2021_67KB.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\International	BlackMatter_02_08_2021_67KB.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\Desktop	BlackMatter_02_08_2021_67KB.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Control Panel\Desktop\WallpaperStyle = "10"	BlackMatter_02_08_2021_67KB.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

BlackMatter_02_08_2021_67KB.exe

pid	process
2112	BlackMatter_02_08_2021_67KB.exe
2112	BlackMatter_02_08_2021_67KB.exe
2112	BlackMatter_02_08_2021_67KB.exe
2112	BlackMatter_02_08_2021_67KB.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

Processes:

BlackMatter_02_08_2021_67KB.exevssvc.exe

description	pid	process
Token: SeBackupPrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeDebugPrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: 36	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeImpersonatePrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeIncBasePriorityPrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeIncreaseQuotaPrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: 33	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeManageVolumePrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeProfSingleProcessPrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeRestorePrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeSecurityPrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeSystemProfilePrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeTakeOwnershipPrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeShutdownPrivilege	2112	BlackMatter_02_08_2021_67KB.exe
Token: SeBackupPrivilege	1876	vssvc.exe
Token: SeRestorePrivilege	1876	vssvc.exe
Token: SeAuditPrivilege	1876	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\RansomwareSamples\BlackMatter_02_08_2021_67KB.exe
"C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\BlackMatter_02_08_2021_67KB.exe"
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:2112

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1876

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:\Users\Admin\AppData\Local\Temp\CabFD26.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarFF3B.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\mINyMTFyg.README.txt

Filesize
1KB

MD5
f66968c47a64569e2281f65a95991be0

SHA1
ef9e3e80bfbea4c3021b226cb8cd00687013b8a8

SHA256
4b950c763006e7c4569df8742855cec31bf82f835bd7e2bdcb5f128db34c82bf

SHA512
cb4ace1b3e891ab100b3950c6bc133b216e91c8978a3af1ffd75617b606bb7ceb0133f44d37a30a827655e5b84b016d736a732f5f37635bb727e1a5b722cad24

Download Submit
memory/2112-0-0x0000000000AA0000-0x0000000000AE0000-memory.dmp

Filesize
256KB

Download