General

  • Target

    30140a3a441d4d92bc78e6726d9de9a293e83f812c16658222c32ce408c453ba

  • Size

    702KB

  • Sample

    221223-rylrnabg4t

  • MD5

    21d82a5c9d977f7c5c5015829c321a13

  • SHA1

    ffb493214fd5ac83f2a628bc0e15f5a060c36ffc

  • SHA256

    30140a3a441d4d92bc78e6726d9de9a293e83f812c16658222c32ce408c453ba

  • SHA512

    91e5480b1e9d329c411f62c4eb99bfeda6161e07cb238acf3b00073e4d6cdadc9c1d6859561a5135833f585b5026228b063ab3aff81ff04f9534c31b08a99c34

  • SSDEEP

    12288:5IODa1GPYOBsDMOUaIQpGyEV3T5W241YgNxMmDsbiYltjHR7r4w9QvbfsZ6jlPm5:5IO+aYxHjpYT5s1YgNxMmDsbiYltjHRj

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
All your files have been encrypted! All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail admin@stex777.com Write this ID in the title of your message 20A73494 In case of no answer in 24 hours write us to theese e-mails: admin@stex777.xyz You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. Free decryption as guarantee Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.
Emails

admin@stex777.com

admin@stex777.xyz

Extracted

Path

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
All your files have been encrypted! All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail admin@stex777.com Write this ID in the title of your message EEA62022 In case of no answer in 24 hours write us to theese e-mails: admin@stex777.xyz You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. Free decryption as guarantee Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.
Emails

admin@stex777.com

admin@stex777.xyz

Targets

    • Target

      30140a3a441d4d92bc78e6726d9de9a293e83f812c16658222c32ce408c453ba

    • Size

      702KB

    • MD5

      21d82a5c9d977f7c5c5015829c321a13

    • SHA1

      ffb493214fd5ac83f2a628bc0e15f5a060c36ffc

    • SHA256

      30140a3a441d4d92bc78e6726d9de9a293e83f812c16658222c32ce408c453ba

    • SHA512

      91e5480b1e9d329c411f62c4eb99bfeda6161e07cb238acf3b00073e4d6cdadc9c1d6859561a5135833f585b5026228b063ab3aff81ff04f9534c31b08a99c34

    • SSDEEP

      12288:5IODa1GPYOBsDMOUaIQpGyEV3T5W241YgNxMmDsbiYltjHR7r4w9QvbfsZ6jlPm5:5IO+aYxHjpYT5s1YgNxMmDsbiYltjHRj

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Checks computer location settings

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

    • Drops startup file

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Deletion

2
T1107

Modify Registry

2
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

2
T1490

Tasks