blackmatter | 6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db

General

Target

w1i488c2sdfmss6.exe
Size

71KB
MD5

10aa058a3ac49e016cad7987b8e09886
SHA1

cca6682330a819592c3b1ea0448ceb4e141593dc
SHA256

6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db
SHA512

f115fb62b1ca5e18f6340d42ff4393e2b175917312ae1cc14e7a6a9322cf8adaf22457bc8213e2baafdc2cb19d5db1e5a9c003155cbf142d5a08604495e22f6e

Score

10^/10

blackmatter ransomware

Malware Config

Extracted

Path

C:\oSPvdHTvI.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 500 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: %BLOG_URL% >>> 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/OYPF561W4U8HVA0NLVCKJCZB >> Warning! Recovery recommendations. We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.

URLs

http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/OYPF561W4U8HVA0NLVCKJCZB

Signatures

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

Modifies extensions of user files 17 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\WatchMeasure.png => C:\Users\Admin\Pictures\WatchMeasure.png.oSPvdHTvI	w1i488c2sdfmss6.exe
File renamed	C:\Users\Admin\Pictures\CompressUpdate.crw => C:\Users\Admin\Pictures\CompressUpdate.crw.oSPvdHTvI	w1i488c2sdfmss6.exe
File renamed	C:\Users\Admin\Pictures\PublishConvert.tif => C:\Users\Admin\Pictures\PublishConvert.tif.oSPvdHTvI	w1i488c2sdfmss6.exe
File renamed	C:\Users\Admin\Pictures\ReceiveCompress.png => C:\Users\Admin\Pictures\ReceiveCompress.png.oSPvdHTvI	w1i488c2sdfmss6.exe
File renamed	C:\Users\Admin\Pictures\SuspendClose.crw => C:\Users\Admin\Pictures\SuspendClose.crw.oSPvdHTvI	w1i488c2sdfmss6.exe
File opened for modification	C:\Users\Admin\Pictures\WaitSuspend.tiff.oSPvdHTvI	w1i488c2sdfmss6.exe
File opened for modification	C:\Users\Admin\Pictures\PublishConvert.tif.oSPvdHTvI	w1i488c2sdfmss6.exe
File renamed	C:\Users\Admin\Pictures\SkipUnblock.crw => C:\Users\Admin\Pictures\SkipUnblock.crw.oSPvdHTvI	w1i488c2sdfmss6.exe
File opened for modification	C:\Users\Admin\Pictures\SuspendClose.crw.oSPvdHTvI	w1i488c2sdfmss6.exe
File opened for modification	C:\Users\Admin\Pictures\CompressUpdate.crw.oSPvdHTvI	w1i488c2sdfmss6.exe
File opened for modification	C:\Users\Admin\Pictures\ReceiveCompress.png.oSPvdHTvI	w1i488c2sdfmss6.exe
File opened for modification	C:\Users\Admin\Pictures\WaitSuspend.tiff	w1i488c2sdfmss6.exe
File opened for modification	C:\Users\Admin\Pictures\WatchMeasure.png.oSPvdHTvI	w1i488c2sdfmss6.exe
File renamed	C:\Users\Admin\Pictures\FindUndo.tif => C:\Users\Admin\Pictures\FindUndo.tif.oSPvdHTvI	w1i488c2sdfmss6.exe
File opened for modification	C:\Users\Admin\Pictures\FindUndo.tif.oSPvdHTvI	w1i488c2sdfmss6.exe
File opened for modification	C:\Users\Admin\Pictures\SkipUnblock.crw.oSPvdHTvI	w1i488c2sdfmss6.exe
File renamed	C:\Users\Admin\Pictures\WaitSuspend.tiff => C:\Users\Admin\Pictures\WaitSuspend.tiff.oSPvdHTvI	w1i488c2sdfmss6.exe

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)	\??\Z:	w1i488c2sdfmss6.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-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\oSPvdHTvI.bmp"	w1i488c2sdfmss6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\oSPvdHTvI.bmp"	w1i488c2sdfmss6.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
1852	w1i488c2sdfmss6.exe
1852	w1i488c2sdfmss6.exe
1852	w1i488c2sdfmss6.exe
1852	w1i488c2sdfmss6.exe
1852	w1i488c2sdfmss6.exe
1852	w1i488c2sdfmss6.exe

Modifies Control Panel 3 IoCs

evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\WallpaperStyle = "10"	w1i488c2sdfmss6.exe
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\International	w1i488c2sdfmss6.exe
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop	w1i488c2sdfmss6.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1852	w1i488c2sdfmss6.exe
1852	w1i488c2sdfmss6.exe
1852	w1i488c2sdfmss6.exe
1852	w1i488c2sdfmss6.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeBackupPrivilege	1852	w1i488c2sdfmss6.exe
Token: SeDebugPrivilege	1852	w1i488c2sdfmss6.exe
Token: 36	1852	w1i488c2sdfmss6.exe
Token: SeImpersonatePrivilege	1852	w1i488c2sdfmss6.exe
Token: SeIncBasePriorityPrivilege	1852	w1i488c2sdfmss6.exe
Token: SeIncreaseQuotaPrivilege	1852	w1i488c2sdfmss6.exe
Token: 33	1852	w1i488c2sdfmss6.exe
Token: SeManageVolumePrivilege	1852	w1i488c2sdfmss6.exe
Token: SeProfSingleProcessPrivilege	1852	w1i488c2sdfmss6.exe
Token: SeRestorePrivilege	1852	w1i488c2sdfmss6.exe
Token: SeSecurityPrivilege	1852	w1i488c2sdfmss6.exe
Token: SeSystemProfilePrivilege	1852	w1i488c2sdfmss6.exe
Token: SeTakeOwnershipPrivilege	1852	w1i488c2sdfmss6.exe
Token: SeShutdownPrivilege	1852	w1i488c2sdfmss6.exe
Token: SeBackupPrivilege	2296	vssvc.exe
Token: SeRestorePrivilege	2296	vssvc.exe
Token: SeAuditPrivilege	2296	vssvc.exe

C:\Users\Admin\AppData\Local\Temp\w1i488c2sdfmss6.exe
"C:\Users\Admin\AppData\Local\Temp\w1i488c2sdfmss6.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1852

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2296

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

Replay Monitor

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Downloads

memory/1852-114-0x0000000000973000-0x0000000000975000-memory.dmp

Filesize
8KB

Download
memory/1852-115-0x0000000000970000-0x0000000000971000-memory.dmp

Filesize
4KB

Download

Analysis

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