blackmatter | 520bd9ed608c668810971dbd51184c6a29819674280b018dc4027bc38fc42e57

General

Target

50c4970003a84cab1bf2634631fe39d7.exe
Size

78KB
MD5

50c4970003a84cab1bf2634631fe39d7
SHA1

721a749cbd6afcd765e07902c17d5ab949b04e4a
SHA256

520bd9ed608c668810971dbd51184c6a29819674280b018dc4027bc38fc42e57
SHA512

fb210c92f7d1be9f9361b11dffd30fac78eeaadabf844a78a7dad00169f994d089c1cf4a037d6a1b82fddf35a6bfa34b8cbf216ce1786f407dfc015c72533504
SSDEEP

1536:7nICS4ArFnRoHhcVyid9EZZoi+zQsgoZ2GwrCN:4ZnmqVyq9EN+MzW

Score

10^/10

blackmatter ransomware

Malware Config

Extracted

Path

F:\fhe6gYG6F.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/0JOA98TDMXLHJ77VDOO >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/0JOA98TDMXLHJ77VDOO

Signatures

BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
ransomware blackmatter
Renames multiple (167) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\F:	50c4970003a84cab1bf2634631fe39d7.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-1-5-21-3308111660-3636268597-2291490419-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\fhe6gYG6F.bmp"	50c4970003a84cab1bf2634631fe39d7.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\fhe6gYG6F.bmp"	50c4970003a84cab1bf2634631fe39d7.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
3000	50c4970003a84cab1bf2634631fe39d7.exe
3000	50c4970003a84cab1bf2634631fe39d7.exe
3000	50c4970003a84cab1bf2634631fe39d7.exe
3000	50c4970003a84cab1bf2634631fe39d7.exe
3000	50c4970003a84cab1bf2634631fe39d7.exe
3000	50c4970003a84cab1bf2634631fe39d7.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies Control Panel 3 IoCs

evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Control Panel\International	50c4970003a84cab1bf2634631fe39d7.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Control Panel\Desktop	50c4970003a84cab1bf2634631fe39d7.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Control Panel\Desktop\WallpaperStyle = "10"	50c4970003a84cab1bf2634631fe39d7.exe

Modifies registry class 20 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1"	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_Classes\Local Settings	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000	splwow64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}"	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg	splwow64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}"	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	splwow64.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0"	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	splwow64.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3000	50c4970003a84cab1bf2634631fe39d7.exe
3000	50c4970003a84cab1bf2634631fe39d7.exe
3000	50c4970003a84cab1bf2634631fe39d7.exe
3000	50c4970003a84cab1bf2634631fe39d7.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeBackupPrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeDebugPrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: 36	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeImpersonatePrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeIncBasePriorityPrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeIncreaseQuotaPrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: 33	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeManageVolumePrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeProfSingleProcessPrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeRestorePrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeSecurityPrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeSystemProfilePrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeTakeOwnershipPrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeShutdownPrivilege	3000	50c4970003a84cab1bf2634631fe39d7.exe
Token: SeBackupPrivilege	1224	vssvc.exe
Token: SeRestorePrivilege	1224	vssvc.exe
Token: SeAuditPrivilege	1224	vssvc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2940	splwow64.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 2704	3000	50c4970003a84cab1bf2634631fe39d7.exe	35
PID 3000 wrote to memory of 2704	3000	50c4970003a84cab1bf2634631fe39d7.exe	35
PID 3000 wrote to memory of 2704	3000	50c4970003a84cab1bf2634631fe39d7.exe	35
PID 3000 wrote to memory of 2704	3000	50c4970003a84cab1bf2634631fe39d7.exe	35
PID 2704 wrote to memory of 2940	2704	NOTEPAD.EXE	36
PID 2704 wrote to memory of 2940	2704	NOTEPAD.EXE	36
PID 2704 wrote to memory of 2940	2704	NOTEPAD.EXE	36
PID 2704 wrote to memory of 2940	2704	NOTEPAD.EXE	36

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\50c4970003a84cab1bf2634631fe39d7.exe
"C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe"
1⤵
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Windows\SysWOW64\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" /p F:\fhe6gYG6F.README.txt
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\splwow64.exe
    C:\Windows\splwow64.exe 12288
    3⤵
    - Modifies registry class
    - Suspicious use of SetWindowsHookEx
    PID:2940

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab6431.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar6463.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
C:\Users\Admin\Documents\ReadGrant.xps.fhe6gYG6F

Filesize
600KB

MD5
18b17b8add7aa897e0c181b622161e91

SHA1
234744a08807b8d4c4a9599727eb39e16be83de7

SHA256
e544a8d79ba10ddd2007d3f34d8d04a3c2ac3b24eee586fb8c7d3cbccac50daa

SHA512
ff4574e13f875eaebb3783820548577f7ee95d5cb81fa7d9efea7b696ed3b57b2859830cc991d71ce45230a63b865c5bad918c59944abd5735dd943e02a9ec53

Download Submit
F:\fhe6gYG6F.README.txt

Filesize
1KB

MD5
8d8f960af0181c4ecbb0ae3d7572199c

SHA1
32169e6bec91a3275c4608120d1ba34bdbd6a004

SHA256
29181bf7ae071329e459ad38efc9986f2ff83a8d83a212f06514806d86129296

SHA512
941d22ed2163e238d3db2d72e1f0f4e59cb4924e69bc178672c7e07b84dfadfe0198ef3c7a84c47e78a1c753fbc3472798fc8466ef865aa493b75fa27f5a2de2

Download Submit
memory/2940-446-0x00000000040E0000-0x00000000040E1000-memory.dmp

Filesize
4KB

Download
memory/2940-448-0x00000000040E0000-0x00000000040E1000-memory.dmp

Filesize
4KB

Download
memory/3000-0-0x0000000001CC0000-0x0000000001D00000-memory.dmp

Filesize
256KB

Download

Analysis

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