teslacrypt | 54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6

Analysis

max time kernel
150s
max time network
179s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
25-07-2022 17:53

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe
Size

392KB
MD5

1f9fad0c31af765a2f6555ea2207b53f
SHA1

f250ad322fe76e0b2ce8b490c1bf008e324e6136
SHA256

54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6
SHA512

1006c34d73704b8cb007d49819e76d96f1482c32b0d375ed647e25505f3193123ac77a23c686694f81312ba143868c5f9c1bd949e466feec7c2fee4bf0316bb5

Score

10^/10

teslacrypt persistence ransomware

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-4084403625-2215941253-1760665084-1000\Recovery+atbkg.txt

Family

teslacrypt

Ransom Note

NOT YOUR LANGUAGE? USE https://translate.google.com What happened to your files ? All of your files were protected by a strong encryption with RSA-4096. More information about the encryption keys using RSA-4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA-4096 KEY, both public and private. !!! ALL YOUR FILES were encrypted with the public key, which has been transferred to your computer via the Internet. !!! Decrypting of your files is only possible with the help of the private key and decrypt program , which is on our Secret Server What do I do ? So, there are two ways you can choose: wait for a miracle and get your price doubled, or start obtaining BITCOIN NOW! , and restore your data easy way. If You have really valuable data, you better not waste your time, because there is no other way to get your files, except make a payment. For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/FD7F2F59B14BE985 2. http://kkd47eh4hdjshb5t.angortra.at/FD7F2F59B14BE985 3. http://ytrest84y5i456hghadefdsd.pontogrot.com/FD7F2F59B14BE985 If for some reasons the addresses are not available, follow these steps: 1. Download and install tor-browser: http://www.torproject.org/projects/torbrowser.html.en 2. After a successful installation, run the browser 3. Type in the address bar: xlowfznrg4wf7dli.onion/FD7F2F59B14BE985 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://tt54rfdjhb34rfbnknaerg.milerteddy.com/FD7F2F59B14BE985 http://kkd47eh4hdjshb5t.angortra.at/FD7F2F59B14BE985 http://ytrest84y5i456hghadefdsd.pontogrot.com/FD7F2F59B14BE985 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/FD7F2F59B14BE985

URLs

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/FD7F2F59B14BE985

http://kkd47eh4hdjshb5t.angortra.at/FD7F2F59B14BE985

http://ytrest84y5i456hghadefdsd.pontogrot.com/FD7F2F59B14BE985

http://xlowfznrg4wf7dli.ONION/FD7F2F59B14BE985

Signatures

TeslaCrypt, AlphaCrypt
Ransomware based on CryptoLocker. Shut down by the developers in 2016.
ransomware teslacrypt
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Executes dropped EXE 2 IoCs

Processes:

vrktxctdbwkd.exevrktxctdbwkd.exe

pid	Process
832	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid	Process
2000	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vrktxctdbwkd.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Windows\CurrentVersion\Run	vrktxctdbwkd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Windows\CurrentVersion\Run\vnxtvfbmusle = "C:\\Windows\\system32\\cmd.exe /c start \"\" \"C:\\Windows\\vrktxctdbwkd.exe\""	vrktxctdbwkd.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exevrktxctdbwkd.exe

description	pid	Process	procid_target
PID 1820 set thread context of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 832 set thread context of 1668	832	vrktxctdbwkd.exe	31

Drops file in Program Files directory 7 IoCs

Processes:

vrktxctdbwkd.exe

description	ioc	Process
File opened for modification	C:\Program Files\7-Zip\History.txt	vrktxctdbwkd.exe
File opened for modification	C:\Program Files\7-Zip\Lang\af.txt	vrktxctdbwkd.exe
File opened for modification	C:\Program Files\7-Zip\Lang\an.txt	vrktxctdbwkd.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ar.txt	vrktxctdbwkd.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ast.txt	vrktxctdbwkd.exe
File opened for modification	C:\Program Files\7-Zip\Lang\az.txt	vrktxctdbwkd.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ba.txt	vrktxctdbwkd.exe

Drops file in Windows directory 2 IoCs

Processes:

54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe

description	ioc	Process
File created	C:\Windows\vrktxctdbwkd.exe	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe
File opened for modification	C:\Windows\vrktxctdbwkd.exe	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

vrktxctdbwkd.exe

pid	Process
1668	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe
1668	vrktxctdbwkd.exe

Suspicious use of AdjustPrivilegeToken 22 IoCs

Processes:

54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exevrktxctdbwkd.exeWMIC.exe

description	pid	Process
Token: SeDebugPrivilege	1936	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe
Token: SeDebugPrivilege	1668	vrktxctdbwkd.exe
Token: SeIncreaseQuotaPrivilege	1956	WMIC.exe
Token: SeSecurityPrivilege	1956	WMIC.exe
Token: SeTakeOwnershipPrivilege	1956	WMIC.exe
Token: SeLoadDriverPrivilege	1956	WMIC.exe
Token: SeSystemProfilePrivilege	1956	WMIC.exe
Token: SeSystemtimePrivilege	1956	WMIC.exe
Token: SeProfSingleProcessPrivilege	1956	WMIC.exe
Token: SeIncBasePriorityPrivilege	1956	WMIC.exe
Token: SeCreatePagefilePrivilege	1956	WMIC.exe
Token: SeBackupPrivilege	1956	WMIC.exe
Token: SeRestorePrivilege	1956	WMIC.exe
Token: SeShutdownPrivilege	1956	WMIC.exe
Token: SeDebugPrivilege	1956	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1956	WMIC.exe
Token: SeRemoteShutdownPrivilege	1956	WMIC.exe
Token: SeUndockPrivilege	1956	WMIC.exe
Token: SeManageVolumePrivilege	1956	WMIC.exe
Token: 33	1956	WMIC.exe
Token: 34	1956	WMIC.exe
Token: 35	1956	WMIC.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exevrktxctdbwkd.exevrktxctdbwkd.exe

description	pid	Process	procid_target
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1820 wrote to memory of 1936	1820	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	27
PID 1936 wrote to memory of 832	1936	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	28
PID 1936 wrote to memory of 832	1936	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	28
PID 1936 wrote to memory of 832	1936	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	28
PID 1936 wrote to memory of 832	1936	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	28
PID 1936 wrote to memory of 2000	1936	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	29
PID 1936 wrote to memory of 2000	1936	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	29
PID 1936 wrote to memory of 2000	1936	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	29
PID 1936 wrote to memory of 2000	1936	54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe	29
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 832 wrote to memory of 1668	832	vrktxctdbwkd.exe	31
PID 1668 wrote to memory of 1956	1668	vrktxctdbwkd.exe	32
PID 1668 wrote to memory of 1956	1668	vrktxctdbwkd.exe	32
PID 1668 wrote to memory of 1956	1668	vrktxctdbwkd.exe	32
PID 1668 wrote to memory of 1956	1668	vrktxctdbwkd.exe	32

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

Processes:

vrktxctdbwkd.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	vrktxctdbwkd.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1"	vrktxctdbwkd.exe

C:\Users\Admin\AppData\Local\Temp\54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe
"C:\Users\Admin\AppData\Local\Temp\54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Users\Admin\AppData\Local\Temp\54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe
  "C:\Users\Admin\AppData\Local\Temp\54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6.exe"
  2⤵
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1936
- - C:\Windows\vrktxctdbwkd.exe
    C:\Windows\vrktxctdbwkd.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:832
  - - C:\Windows\vrktxctdbwkd.exe
      C:\Windows\vrktxctdbwkd.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Program Files directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      System policy modification
      PID:1668
    - - C:\Windows\System32\wbem\WMIC.exe
        
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /noin teractive
        5⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:1956
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\54D500~1.EXE
    3⤵
    - Deletes itself
    PID:2000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\vrktxctdbwkd.exe

Filesize
392KB

MD5
1f9fad0c31af765a2f6555ea2207b53f

SHA1
f250ad322fe76e0b2ce8b490c1bf008e324e6136

SHA256
54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6

SHA512
1006c34d73704b8cb007d49819e76d96f1482c32b0d375ed647e25505f3193123ac77a23c686694f81312ba143868c5f9c1bd949e466feec7c2fee4bf0316bb5

Download Submit
C:\Windows\vrktxctdbwkd.exe

Filesize
392KB

MD5
1f9fad0c31af765a2f6555ea2207b53f

SHA1
f250ad322fe76e0b2ce8b490c1bf008e324e6136

SHA256
54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6

SHA512
1006c34d73704b8cb007d49819e76d96f1482c32b0d375ed647e25505f3193123ac77a23c686694f81312ba143868c5f9c1bd949e466feec7c2fee4bf0316bb5

Download Submit
C:\Windows\vrktxctdbwkd.exe

Filesize
392KB

MD5
1f9fad0c31af765a2f6555ea2207b53f

SHA1
f250ad322fe76e0b2ce8b490c1bf008e324e6136

SHA256
54d500de350673efadd60703fb93c93bb157b1559d52c684b053c112ec0e4af6

SHA512
1006c34d73704b8cb007d49819e76d96f1482c32b0d375ed647e25505f3193123ac77a23c686694f81312ba143868c5f9c1bd949e466feec7c2fee4bf0316bb5

Download Submit
memory/832-73-0x0000000000000000-mapping.dmp

Download
memory/1668-96-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1668-95-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1668-94-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1668-90-0x000000000043BD46-mapping.dmp

Download
memory/1820-55-0x0000000000240000-0x0000000000243000-memory.dmp

Filesize
12KB

Download
memory/1820-54-0x0000000076871000-0x0000000076873000-memory.dmp

Filesize
8KB

Download
memory/1820-69-0x0000000000240000-0x0000000000243000-memory.dmp

Filesize
12KB

Download
memory/1936-63-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1936-72-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1936-71-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1936-67-0x000000000043BD46-mapping.dmp

Download
memory/1936-77-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1936-66-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1936-64-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1936-61-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1936-59-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1936-57-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1936-56-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1956-97-0x0000000000000000-mapping.dmp

Download
memory/2000-76-0x0000000000000000-mapping.dmp

Download