teslacrypt | 583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0

Analysis

max time kernel
16s
max time network
21s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
22-10-2022 05:32

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General

Target

583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe
Size

424KB
MD5

c6665caa8d5455b1643bc72fe55b0ade
SHA1

eac5cb2ca1661c2f282393d0cdc52d8bfc1dea42
SHA256

583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0
SHA512

921412255db2b5b5a076f773468f63c56411f06bb249121160e8695ea9bbc75714e2034a14d79275cb024d18708f7ebf5aad69d780b831384d2cb603fed7255c
SSDEEP

12288:eL2WjWgDhrhjxaRaDz7z4HMLzskGWoXblCJxfS6:eDXpVx7f7dLoMorOR1

Score

10^/10

teslacrypt persistence ransomware

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2891029575-1462575-1165213807-1000\_RECoVERY_+wfjdo.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 AES More information about the encryption keys using AES can be found here: http://en.wikipedia.org/wiki/AES How did this happen ? !!! Specially for your PC was generated personal AES 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://yyre45dbvn2nhbefbmh.begumvelic.at/2781496C72F8D7FF 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/2781496C72F8D7FF 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/2781496C72F8D7FF 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/2781496C72F8D7FF 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/2781496C72F8D7FF http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/2781496C72F8D7FF http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/2781496C72F8D7FF *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/2781496C72F8D7FF

URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/2781496C72F8D7FF

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/2781496C72F8D7FF

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/2781496C72F8D7FF

http://xlowfznrg4wf7dli.ONION/2781496C72F8D7FF

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 1 IoCs

pid	Process
4932	dvievtcblpfs.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	dvievtcblpfs.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run	dvievtcblpfs.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\udfvfesckpxb = "C:\\Windows\\system32\\cmd.exe /c start \"\" \"C:\\Windows\\dvievtcblpfs.exe\""	dvievtcblpfs.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\7-Zip\Lang\an.txt	dvievtcblpfs.exe
File opened for modification	C:\Program Files\7-Zip\History.txt	dvievtcblpfs.exe
File opened for modification	C:\Program Files\7-Zip\Lang\af.txt	dvievtcblpfs.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\dvievtcblpfs.exe	583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe
File opened for modification	C:\Windows\dvievtcblpfs.exe	583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.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 20 IoCs

pid	Process
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe
4932	dvievtcblpfs.exe

Suspicious use of AdjustPrivilegeToken 47 IoCs

description	pid	Process
Token: SeDebugPrivilege	1044	583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe
Token: SeDebugPrivilege	4932	dvievtcblpfs.exe
Token: SeIncreaseQuotaPrivilege	2084	WMIC.exe
Token: SeSecurityPrivilege	2084	WMIC.exe
Token: SeTakeOwnershipPrivilege	2084	WMIC.exe
Token: SeLoadDriverPrivilege	2084	WMIC.exe
Token: SeSystemProfilePrivilege	2084	WMIC.exe
Token: SeSystemtimePrivilege	2084	WMIC.exe
Token: SeProfSingleProcessPrivilege	2084	WMIC.exe
Token: SeIncBasePriorityPrivilege	2084	WMIC.exe
Token: SeCreatePagefilePrivilege	2084	WMIC.exe
Token: SeBackupPrivilege	2084	WMIC.exe
Token: SeRestorePrivilege	2084	WMIC.exe
Token: SeShutdownPrivilege	2084	WMIC.exe
Token: SeDebugPrivilege	2084	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2084	WMIC.exe
Token: SeRemoteShutdownPrivilege	2084	WMIC.exe
Token: SeUndockPrivilege	2084	WMIC.exe
Token: SeManageVolumePrivilege	2084	WMIC.exe
Token: 33	2084	WMIC.exe
Token: 34	2084	WMIC.exe
Token: 35	2084	WMIC.exe
Token: 36	2084	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2084	WMIC.exe
Token: SeSecurityPrivilege	2084	WMIC.exe
Token: SeTakeOwnershipPrivilege	2084	WMIC.exe
Token: SeLoadDriverPrivilege	2084	WMIC.exe
Token: SeSystemProfilePrivilege	2084	WMIC.exe
Token: SeSystemtimePrivilege	2084	WMIC.exe
Token: SeProfSingleProcessPrivilege	2084	WMIC.exe
Token: SeIncBasePriorityPrivilege	2084	WMIC.exe
Token: SeCreatePagefilePrivilege	2084	WMIC.exe
Token: SeBackupPrivilege	2084	WMIC.exe
Token: SeRestorePrivilege	2084	WMIC.exe
Token: SeShutdownPrivilege	2084	WMIC.exe
Token: SeDebugPrivilege	2084	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2084	WMIC.exe
Token: SeRemoteShutdownPrivilege	2084	WMIC.exe
Token: SeUndockPrivilege	2084	WMIC.exe
Token: SeManageVolumePrivilege	2084	WMIC.exe
Token: 33	2084	WMIC.exe
Token: 34	2084	WMIC.exe
Token: 35	2084	WMIC.exe
Token: 36	2084	WMIC.exe
Token: SeBackupPrivilege	4684	vssvc.exe
Token: SeRestorePrivilege	4684	vssvc.exe
Token: SeAuditPrivilege	4684	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 4932	1044	583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe	82
PID 1044 wrote to memory of 4932	1044	583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe	82
PID 1044 wrote to memory of 4932	1044	583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe	82
PID 1044 wrote to memory of 4196	1044	583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe	83
PID 1044 wrote to memory of 4196	1044	583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe	83
PID 1044 wrote to memory of 4196	1044	583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe	83
PID 4932 wrote to memory of 2084	4932	dvievtcblpfs.exe	85
PID 4932 wrote to memory of 2084	4932	dvievtcblpfs.exe	85

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

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

C:\Users\Admin\AppData\Local\Temp\583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe
"C:\Users\Admin\AppData\Local\Temp\583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Windows\dvievtcblpfs.exe
  C:\Windows\dvievtcblpfs.exe
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - 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:4932
- - C:\Windows\System32\wbem\WMIC.exe
    "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\583431~1.EXE
  2⤵
  PID:4196

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4684

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

C:\Windows\dvievtcblpfs.exe

Filesize
424KB

MD5
c6665caa8d5455b1643bc72fe55b0ade

SHA1
eac5cb2ca1661c2f282393d0cdc52d8bfc1dea42

SHA256
583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0

SHA512
921412255db2b5b5a076f773468f63c56411f06bb249121160e8695ea9bbc75714e2034a14d79275cb024d18708f7ebf5aad69d780b831384d2cb603fed7255c

Download Submit
C:\Windows\dvievtcblpfs.exe

Filesize
424KB

MD5
c6665caa8d5455b1643bc72fe55b0ade

SHA1
eac5cb2ca1661c2f282393d0cdc52d8bfc1dea42

SHA256
583431576fc175e19758774ec8b2893431aafe9a58c025406f22281b60f1aef0

SHA512
921412255db2b5b5a076f773468f63c56411f06bb249121160e8695ea9bbc75714e2034a14d79275cb024d18708f7ebf5aad69d780b831384d2cb603fed7255c

Download Submit
memory/1044-132-0x0000000000400000-0x00000000004AE000-memory.dmp

Filesize
696KB

Download
memory/1044-136-0x0000000002240000-0x00000000022C5000-memory.dmp

Filesize
532KB

Download
memory/4932-145-0x0000000002140000-0x00000000021C5000-memory.dmp

Filesize
532KB

Download