blackmatter | b824bbc645f15e213b4cb2628f7d383e9e37282059b03f6fe60f7c84ea1fed1f

General

Target

1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Size

72KB
MD5

1dd464cbb3fbd6881eef3f05b8b1fbd5
SHA1

cafd8d20f2abaebbbfc367b4b4512107362f3758
SHA256

b824bbc645f15e213b4cb2628f7d383e9e37282059b03f6fe60f7c84ea1fed1f
SHA512

1564fffe28c2b7c2b18c35d68e3e254106620b2c3b7b5f41b95cfbb3a2cf0d9c42616d670b4060d09129ff18f0148c03e00bbd205f9d10697b265109a43d053c
SSDEEP

1536:yICS4AgxwhjEO3r825exqkHYnKeGsXqsMt:R2SN3mxYnKr

Score

10^/10

blackmatter ransomware

Malware Config

Extracted

Path

C:\Users\5XCNh4eNc.README.txt

Family

blackmatter

Ransom Note

~+ * + ' BLACK | () .-.,='``'=. - o - '=/_ \ | * | '=._ | \ `=./`, ' . '=.__.=' `=' * + Matter + O * ' . >>> Hello B&G International >>> 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://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/RSW33BDOYPLWM78U9A09BZDI >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/RSW33BDOYPLWM78U9A09BZDI

Signatures

BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
ransomware blackmatter
Renames multiple (169) 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-1-5-21-3601492379-692465709-652514833-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\5XCNh4eNc.bmp"	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\5XCNh4eNc.bmp"	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe

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

System Information Discovery
T1082

Modifies Control Panel 2 IoCs

evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Control Panel\Desktop	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Control Panel\Desktop\WallpaperStyle = "10"	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe

Modifies registry class 20 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	splwow64.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1"	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	splwow64.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0"	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	splwow64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}"	splwow64.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}"	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_Classes\Local Settings	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000	splwow64.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	splwow64.exe
Key created	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	splwow64.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2092	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2496	splwow64.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeBackupPrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeDebugPrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: 36	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeImpersonatePrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeIncBasePriorityPrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeIncreaseQuotaPrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: 33	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeManageVolumePrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeProfSingleProcessPrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeRestorePrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeSecurityPrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeSystemProfilePrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeTakeOwnershipPrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeShutdownPrivilege	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
Token: SeBackupPrivilege	2660	vssvc.exe
Token: SeRestorePrivilege	2660	vssvc.exe
Token: SeAuditPrivilege	2660	vssvc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2496	splwow64.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2092	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe	31
PID 2516 wrote to memory of 2092	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe	31
PID 2516 wrote to memory of 2092	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe	31
PID 2516 wrote to memory of 2092	2516	1dd464cbb3fbd6881eef3f05b8b1fbd5.exe	31
PID 2092 wrote to memory of 2496	2092	NOTEPAD.EXE	32
PID 2092 wrote to memory of 2496	2092	NOTEPAD.EXE	32
PID 2092 wrote to memory of 2496	2092	NOTEPAD.EXE	32
PID 2092 wrote to memory of 2496	2092	NOTEPAD.EXE	32

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\1dd464cbb3fbd6881eef3f05b8b1fbd5.exe
"C:\Users\Admin\AppData\Local\Temp\1dd464cbb3fbd6881eef3f05b8b1fbd5.exe"
1⤵
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" /p C:\5XCNh4eNc.README.txt
  2⤵
  - Opens file in notepad (likely ransom note)
  - Suspicious use of WriteProcessMemory
  PID:2092
- - C:\Windows\splwow64.exe
    C:\Windows\splwow64.exe 12288
    3⤵
    - Modifies registry class
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2496

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

Replay Monitor

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Downloads

C:\Users\5XCNh4eNc.README.txt

Filesize
1KB

MD5
c4947c60a66a5f286be734256b7e6e8d

SHA1
7cd483bbe59972ff22b2c122c08548933e812b66

SHA256
5119a7a0a3c668d897f1e33f1b39f3c78396a057b3efa58858c4b86878cce373

SHA512
ec43f7e65055d471c5f78d9777c0de661690a51da2f905467177c8a433468a74f546d2cac32f3881b75cdbfeabbff4e3ceaef10e181cdb2b5ae70f06875b2565

Download Submit
C:\Users\Admin\Documents\PingImport.xps.5XCNh4eNc

Filesize
423KB

MD5
c36336988f677353fef9f0435267f8e1

SHA1
62a08fa1e0cd07b7628142fdac6c303e8e320fc3

SHA256
4ef42c0afc38825c9d08ce4760bb083d98456c04c44b25cead51d9ddc34141da

SHA512
bcde5b54be19a329e7bb743a6fbfb91dcc2b74e39c714e2c8a138a646ef243f8c51cb4f686e603cb44d1fe540fa46923822a4a48da0cfc0318c74df3dab48d36

Download Submit
C:\Users\Admin\Documents\UnregisterMerge.xps.5XCNh4eNc

Filesize
323KB

MD5
7f5e017221af35b564ff3f7ccf8697b0

SHA1
2d81ff936ba0e0ecd5f34f2040186e3974c654fe

SHA256
0382b2c34c2433999ddb9337c5dd743b67a508372c67977b2fae0e67d4dad79a

SHA512
3ed7cb7e19b17abea80eb156036f09179272fa5cbb672458dc772b56294d09d79141e6bc9913879cccd1d143b12586e2e4543019e3db42492cfa3ff12cd3af03

Download Submit
memory/2496-213-0x00000000044B0000-0x00000000044B1000-memory.dmp

Filesize
4KB

Download
memory/2496-216-0x00000000044B0000-0x00000000044B1000-memory.dmp

Filesize
4KB

Download
memory/2516-0-0x0000000000370000-0x00000000003B0000-memory.dmp

Filesize
256KB

Download

Analysis

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