darkylock | 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c

General

Target

E_WIN.exe
Size

92KB
MD5

7cdc8057b3fe13b069b8db93fdde1764
SHA1

8ddd3c69fe3935e4903a2b397bc6f0de772a1bcb
SHA256

393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c
SHA512

7a7778b03a681bad08722019d27c2ca56609cbe6ec6e976b2d08e402b7ec5f2c7ad7d935632c0958b15b42d3dd066b1bd03707a778d77592a29b92adae684801
SSDEEP

1536:y8JknEUnj2zfGN2/PEiTsrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2XsfzK7g:ynlnj2S+hTsrQLOJgY8Zp8LHD4XWaNHY

Score

10^/10

darkylock ransomware

Malware Config

Extracted

Path

C:\Restore-My-Files.txt

Family

darkylock

Ransom Note

---------- Hello ----------- ***WELCOME TO DARKY LOCK *** Your computers and servers are encrypted, and backups are deleted. We use strong encryption algorithms, so no one has yet been able to decrypt their files without our participation. The only way to decrypt your files is to purchase a universal decoder from us, which will restore all the encrypted data and your network. Follow our instructions below, and you will recover all your data: 1) Pay 0.005 bitcoin to 1E6cvG6iEbufvYspsDa3XQ3WJgEMvRTm9i 2) Send us message with transaction id to darkylock@tutanota.com 3) Launch decrypt_bit.exe, which our support will send you through email What guarantees? ------------------ We value our reputation. If we will not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is tested by time and will decrypt all your data. ------------------ !!! DO NOT TRY TO RECOVER ANY FILES YOURSELF. WE WILL NOT BE ABLE TO RESTORE THEM!!!

Emails

darkylock@tutanota.com

Wallets

1E6cvG6iEbufvYspsDa3XQ3WJgEMvRTm9i

Signatures

DarkyLock
Ransomware family first seen in July 2022.
ransomware darkylock
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies extensions of user files 6 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

E_WIN.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\SetOpen.raw => C:\Users\Admin\Pictures\SetOpen.raw.darky	E_WIN.exe
File opened for modification	C:\Users\Admin\Pictures\SetOpen.raw.darky	E_WIN.exe
File renamed	C:\Users\Admin\Pictures\AddSearch.raw => C:\Users\Admin\Pictures\AddSearch.raw.darky	E_WIN.exe
File opened for modification	C:\Users\Admin\Pictures\AddSearch.raw.darky	E_WIN.exe
File renamed	C:\Users\Admin\Pictures\MountRevoke.tif => C:\Users\Admin\Pictures\MountRevoke.tif.darky	E_WIN.exe
File opened for modification	C:\Users\Admin\Pictures\MountRevoke.tif.darky	E_WIN.exe

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

E_WIN.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation E_WIN.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	E_WIN.exe

Enumerates connected drives 3 TTPs 24 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

Processes:

E_WIN.exe

description	ioc	process
File opened (read-only)	\??\Y:	E_WIN.exe
File opened (read-only)	\??\B:	E_WIN.exe
File opened (read-only)	\??\M:	E_WIN.exe
File opened (read-only)	\??\H:	E_WIN.exe
File opened (read-only)	\??\Q:	E_WIN.exe
File opened (read-only)	\??\E:	E_WIN.exe
File opened (read-only)	\??\R:	E_WIN.exe
File opened (read-only)	\??\S:	E_WIN.exe
File opened (read-only)	\??\K:	E_WIN.exe
File opened (read-only)	\??\L:	E_WIN.exe
File opened (read-only)	\??\Z:	E_WIN.exe
File opened (read-only)	\??\W:	E_WIN.exe
File opened (read-only)	\??\T:	E_WIN.exe
File opened (read-only)	\??\I:	E_WIN.exe
File opened (read-only)	\??\F:	E_WIN.exe
File opened (read-only)	\??\G:	E_WIN.exe
File opened (read-only)	\??\J:	E_WIN.exe
File opened (read-only)	\??\X:	E_WIN.exe
File opened (read-only)	\??\V:	E_WIN.exe
File opened (read-only)	\??\U:	E_WIN.exe
File opened (read-only)	\??\O:	E_WIN.exe
File opened (read-only)	\??\P:	E_WIN.exe
File opened (read-only)	\??\A:	E_WIN.exe
File opened (read-only)	\??\N:	E_WIN.exe

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

System Information Discovery
T1082
Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exevssadmin.exe

pid process

3328 vssadmin.exe
1592 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

E_WIN.exe

pid process

4616 E_WIN.exe
4616 E_WIN.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 3512 vssvc.exe
Token: SeRestorePrivilege 3512 vssvc.exe
Token: SeAuditPrivilege 3512 vssvc.exe

pid	process
3328	vssadmin.exe
1592	vssadmin.exe

pid	process
4616	E_WIN.exe
4616	E_WIN.exe

description	pid	process
Token: SeBackupPrivilege	3512	vssvc.exe
Token: SeRestorePrivilege	3512	vssvc.exe
Token: SeAuditPrivilege	3512	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

E_WIN.execmd.execmd.exe

description	pid	process	target process
PID 4616 wrote to memory of 852	4616	E_WIN.exe	cmd.exe
PID 4616 wrote to memory of 852	4616	E_WIN.exe	cmd.exe
PID 852 wrote to memory of 3328	852	cmd.exe	vssadmin.exe
PID 852 wrote to memory of 3328	852	cmd.exe	vssadmin.exe
PID 4616 wrote to memory of 3652	4616	E_WIN.exe	cmd.exe
PID 4616 wrote to memory of 3652	4616	E_WIN.exe	cmd.exe
PID 3652 wrote to memory of 1592	3652	cmd.exe	vssadmin.exe
PID 3652 wrote to memory of 1592	3652	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\E_WIN.exe
"C:\Users\Admin\AppData\Local\Temp\E_WIN.exe"
1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4616

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:852

C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
3⤵
- Interacts with shadow copies
PID:3328

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:3652

C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
3⤵
- Interacts with shadow copies
PID:1592

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3512

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3548

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Downloads\Restore-My-Files.txt
1⤵
PID:4420

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

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Downloads

C:\Users\Admin\Downloads\Restore-My-Files.txt
Filesize
1011B

MD5
ade9f28bd9924b23f0c79700b075605c

SHA1
4a5f70f2ffcab05fe529f64f29616fb5f05a473c

SHA256
936159b865127ffa36271b2b126bfc0e15b37704f0a22049a1fb2cb4cb1d4f61

SHA512
321d7bc07533cbff45a74c8ca588d84335bd478efafc9aa4ff2325e8fc182b0820a6361897cc47fda2faeb15445fac3e1a27ccf88e429fceeb1024a8a873f56a

Download Submit
memory/852-133-0x0000000000000000-mapping.dmp

Download
memory/1592-136-0x0000000000000000-mapping.dmp

Download
memory/3328-134-0x0000000000000000-mapping.dmp

Download
memory/3652-135-0x0000000000000000-mapping.dmp

Download
memory/4616-132-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads