blackmatter | 71cce9f320438c262364504a1b0f735f312a399063cce4336d9606ff5950b336

General

Target

EIS.exe
Size

4.8MB
MD5

3df675b0800e6fc57c81271c440327c4
SHA1

361aaa051121753358ea49bfd05716cdd38fe492
SHA256

c3cc8efd60b85139c9b9f4c62c56ffbafde26c1b22cd7b339a371afde7fc513b
SHA512

321f4b2e5dda2b39268ea057df02f49e96a6ab8461fa9e0ed970202b9a934e816f4885c33534dad35f0301fb1046303a9d2b2207293947997db54e307cc4f06b

Score

10^/10

blackmatter b8726db5d916731db5625cfc30c4f7d9 ransomware vmprotect

Malware Config

Extracted

Path

C:\1rWCqamCt.README.txt

Family

blackmatter

Ransom Note

~+ * + ' BLACK | () .-.,='``'=. - o - '=/_ \ | * | '=._ | \ `=./`, ' . '=.__.=' `=' * + Matter + O * ' . >>> Hello Eisvogel Hubert Bernegger GmbH >>> 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 of data. If you do not contact us we will publish all your data will send it to the biggest mass media and your customers. >>> 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/5PBOYRSETHVDBDPTL >>> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/5PBOYRSETHVDBDPTL

Extracted

Family

blackmatter

Version

2.0

Botnet

b8726db5d916731db5625cfc30c4f7d9

Attributes

attempt_auth
false
create_mutex
false
encrypt_network_shares
true
exfiltrate
false
mount_volumes
true

rsa_pubkey.base64

aes.base64

Signatures

BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
ransomware blackmatter

Modifies extensions of user files 13 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\ConfirmPop.raw => C:\Users\Admin\Pictures\ConfirmPop.raw.1rWCqamCt	EIS.exe
File opened for modification	C:\Users\Admin\Pictures\ConfirmPop.raw.1rWCqamCt	EIS.exe
File renamed	C:\Users\Admin\Pictures\EditRedo.tif => C:\Users\Admin\Pictures\EditRedo.tif.1rWCqamCt	EIS.exe
File renamed	C:\Users\Admin\Pictures\UnpublishAssert.tif => C:\Users\Admin\Pictures\UnpublishAssert.tif.1rWCqamCt	EIS.exe
File renamed	C:\Users\Admin\Pictures\ProtectStop.raw => C:\Users\Admin\Pictures\ProtectStop.raw.1rWCqamCt	EIS.exe
File opened for modification	C:\Users\Admin\Pictures\ProtectStop.raw.1rWCqamCt	EIS.exe
File opened for modification	C:\Users\Admin\Pictures\EditRedo.tif.1rWCqamCt	EIS.exe
File opened for modification	C:\Users\Admin\Pictures\InitializeApprove.tiff	EIS.exe
File renamed	C:\Users\Admin\Pictures\InitializeApprove.tiff => C:\Users\Admin\Pictures\InitializeApprove.tiff.1rWCqamCt	EIS.exe
File opened for modification	C:\Users\Admin\Pictures\InitializeApprove.tiff.1rWCqamCt	EIS.exe
File renamed	C:\Users\Admin\Pictures\PopEnable.png => C:\Users\Admin\Pictures\PopEnable.png.1rWCqamCt	EIS.exe
File opened for modification	C:\Users\Admin\Pictures\PopEnable.png.1rWCqamCt	EIS.exe
File opened for modification	C:\Users\Admin\Pictures\UnpublishAssert.tif.1rWCqamCt	EIS.exe

VMProtect packed file 1 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral1/memory/1652-61-0x0000000000400000-0x0000000000BA4000-memory.dmp	vmprotect

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\1rWCqamCt.bmp"	EIS.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\1rWCqamCt.bmp"	EIS.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
1652	EIS.exe
1652	EIS.exe
1652	EIS.exe
1652	EIS.exe
1652	EIS.exe
1652	EIS.exe

Modifies Control Panel 2 IoCs

evasion

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop	EIS.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallpaperStyle = "10"	EIS.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1652	EIS.exe
1652	EIS.exe
1652	EIS.exe
1652	EIS.exe
1652	EIS.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeBackupPrivilege	1652	EIS.exe
Token: SeDebugPrivilege	1652	EIS.exe
Token: 36	1652	EIS.exe
Token: SeImpersonatePrivilege	1652	EIS.exe
Token: SeIncBasePriorityPrivilege	1652	EIS.exe
Token: SeIncreaseQuotaPrivilege	1652	EIS.exe
Token: 33	1652	EIS.exe
Token: SeManageVolumePrivilege	1652	EIS.exe
Token: SeProfSingleProcessPrivilege	1652	EIS.exe
Token: SeRestorePrivilege	1652	EIS.exe
Token: SeSecurityPrivilege	1652	EIS.exe
Token: SeSystemProfilePrivilege	1652	EIS.exe
Token: SeTakeOwnershipPrivilege	1652	EIS.exe
Token: SeShutdownPrivilege	1652	EIS.exe
Token: SeBackupPrivilege	688	vssvc.exe
Token: SeRestorePrivilege	688	vssvc.exe
Token: SeAuditPrivilege	688	vssvc.exe

C:\Users\Admin\AppData\Local\Temp\EIS.exe
"C:\Users\Admin\AppData\Local\Temp\EIS.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1652

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:688

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

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Downloads

memory/1652-61-0x0000000000400000-0x0000000000BA4000-memory.dmp

Filesize
7.6MB

Download
memory/1652-62-0x0000000075AA1000-0x0000000075AA3000-memory.dmp

Filesize
8KB

Download
memory/1652-63-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/1652-65-0x0000000002400000-0x0000000002401000-memory.dmp

Filesize
4KB

Download
memory/1652-64-0x0000000002405000-0x0000000002416000-memory.dmp

Filesize
68KB

Download
memory/1652-66-0x0000000002416000-0x0000000002417000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads