General

  • Target

    sv.exe

  • Size

    63KB

  • Sample

    240701-k7v85awgnn

  • MD5

    c095a62b525e62244cad230e696028cf

  • SHA1

    67232c186d3efe248b540f1f2fe3382770b5074a

  • SHA256

    a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6

  • SHA512

    5ba859d89a9277d9b6243f461991cc6472d001cdea52d9fcfba3cbead88fbc69d9dfce076b1fdeaf0d1cd21fe4cace54f1cefe1c352d70cc8fa2898fe1b61fb0

  • SSDEEP

    1536:unjFXblMp3wgDkbivVSm16KTOKjLIJXc:unrAwgDkbicmbOKj0JM

Malware Config

Extracted

Family

xworm

C2

amount-acceptance.gl.at.ply.gg:7420

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    svhost.exe

Extracted

Path

C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\DECRYPT_YOUR_FILES.HTML

Ransom Note
<html> <head> <style> body{ background-color: #3366CC; } h1 { background-color: RGB(249, 201, 16); } p { background-color: maroon; color: white; } </style> </head> <body> <center> <h1><b> Attention ! All your files </b> have been encrypted. </h1></br> <p> Due encrypting was used algoritm RSA-4096 and AES-256, used for protection military secrets.</br> That means > RESTORE YOU DATA POSIBLE ONLY BUYING decryption passwords from us.</br> Getting a decryption of your files is - SIMPLY task.</br></br> That all what you need:</br> 1. Sent Your ID_KEY on mailbox [email protected] or [email protected] </br> 2. For test, decrypt 2 small files, to be sure that we can decrypt you files.</br> 3. Pay our services. </br> 4. GET software with passwords for decrypt you files.</br> 5. Make measures to prevent this type situations again.</br></br> IMPORTANT(1)</br> Do not try restore files without our help, this is useless, and can destroy you data permanetly.</br></br> IMPORTANT(2) </br> We Cant hold you decryption passwords forever. </br>ALL DECRYPTION PASSWORDS, for what wasn`t we receive reward, will destroy after week of moment of encryption. </p> <p> Your ID_KEY: <br> </p> <table width="1024" border="0"> <tbody> <tr> <td><p>UkSn5JhwltTW7/OPcRg/aMOmqqPL/vlg6vEwiwaUSOc7U2lAij3mOC/5AbeBvEJ3awn3j0dEoezBw5IBfIxjBn7GrLPnMVGWw73SO4dnybZhzIPiK0KloXx1fqJVfqHp9O0nuW4CgX0tGEYTYLHGpJwZTCZQW4K2XLakvoLYUWHjbaOCqQo0S7QXIWiAA83ekou43M/cVOcO4cE+bnvJlm8F09cHQM5dldRuhHXx7OnWlvZKDv63/AXkBzDQ8Bnl+OAuPIXV7cewMewZCtsYnsSUacj96m+bRrs2mMIg+dBLQTxZSoGLTFSBCgyMcyO3Vy8SNUBbOqjqbOiFH49pgA==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Extracted

Path

C:\Program Files\7-Zip\Lang\DECRYPT_YOUR_FILES.HTML

Ransom Note
<html> <head> <style> body{ background-color: #3366CC; } h1 { background-color: RGB(249, 201, 16); } p { background-color: maroon; color: white; } </style> </head> <body> <center> <h1><b> Attention ! All your files </b> have been encrypted. </h1></br> <p> Due encrypting was used algoritm RSA-4096 and AES-256, used for protection military secrets.</br> That means > RESTORE YOU DATA POSIBLE ONLY BUYING decryption passwords from us.</br> Getting a decryption of your files is - SIMPLY task.</br></br> That all what you need:</br> 1. Sent Your ID_KEY on mailbox [email protected] or [email protected] </br> 2. For test, decrypt 2 small files, to be sure that we can decrypt you files.</br> 3. Pay our services. </br> 4. GET software with passwords for decrypt you files.</br> 5. Make measures to prevent this type situations again.</br></br> IMPORTANT(1)</br> Do not try restore files without our help, this is useless, and can destroy you data permanetly.</br></br> IMPORTANT(2) </br> We Cant hold you decryption passwords forever. </br>ALL DECRYPTION PASSWORDS, for what wasn`t we receive reward, will destroy after week of moment of encryption. </p> <p> Your ID_KEY: <br> </p> <table width="1024" border="0"> <tbody> <tr> <td><p>YmJquRd2eKxzLfx9LlXhPhaw8ZjzvhtTfRbtd+S8D8SWNiI0AJe7i24uKVxxZqMDbmAa5l52jI+k/KOZ5pt886x+SzQYuU3qcafe1oQkSq4DEgVYPG0IMQQbSu9BLKRv8ViuRBAGRhQwWP1zubJCb3BcsEiQJ1iUW447YubnJHpZQSEesCmcxlcpw4swO2kmuDzF7K6FmoVc2F/pdKKLFrhLZHr4uAMgFXuIx5FmyGbiOJ1yIxnYzq8ZXZ07qJDl3lHTb5QyeBich/WDCckJLvKq7TSEDC+dj1fB+XiUCjEUFP1S9zXRDUqO2YZ8r1Zugw/pC5SxIeLPxZAqfbQZDQ==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Extracted

Path

C:\Program Files\7-Zip\DECRYPT_YOUR_FILES.HTML

Ransom Note
<html> <head> <style> body{ background-color: #3366CC; } h1 { background-color: RGB(249, 201, 16); } p { background-color: maroon; color: white; } </style> </head> <body> <center> <h1><b> Attention ! All your files </b> have been encrypted. </h1></br> <p> Due encrypting was used algoritm RSA-4096 and AES-256, used for protection military secrets.</br> That means > RESTORE YOU DATA POSIBLE ONLY BUYING decryption passwords from us.</br> Getting a decryption of your files is - SIMPLY task.</br></br> That all what you need:</br> 1. Sent Your ID_KEY on mailbox [email protected] or [email protected] </br> 2. For test, decrypt 2 small files, to be sure that we can decrypt you files.</br> 3. Pay our services. </br> 4. GET software with passwords for decrypt you files.</br> 5. Make measures to prevent this type situations again.</br></br> IMPORTANT(1)</br> Do not try restore files without our help, this is useless, and can destroy you data permanetly.</br></br> IMPORTANT(2) </br> We Cant hold you decryption passwords forever. </br>ALL DECRYPTION PASSWORDS, for what wasn`t we receive reward, will destroy after week of moment of encryption. </p> <p> Your ID_KEY: <br> </p> <table width="1024" border="0"> <tbody> <tr> <td><p>Lu+KZ9RerHmIMDyV4An1dm9ePmjsemLk+3HHcOKYuR2gkL0O3l+7UNffeWUorlOdergqQ/uXkSzSvLmmtRiFZBHA7E6zvJOsguXOtZ0Dbg3kxNFNj7LjKaEFc3tnatOxP3xn0vOHutuJV2upsGsDR1aSZ8rGLFuf/iMTiOV2BIYyIMt4wv/b1t5aovooeU4+798a6RerQHa7/1lRrkqt2sUfABpP84ueEnoZG2baficpCLy3FNi39GHllFUAY/6St3gSnK3UhW2S/XOxZid2wlO73hdPEQvjEd7bGKsO+VFL90T96ixEqDsExCe4s1nvkwnjdxfKTxwBakL0CVwKSw==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Targets

    • Target

      sv.exe

    • Size

      63KB

    • MD5

      c095a62b525e62244cad230e696028cf

    • SHA1

      67232c186d3efe248b540f1f2fe3382770b5074a

    • SHA256

      a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6

    • SHA512

      5ba859d89a9277d9b6243f461991cc6472d001cdea52d9fcfba3cbead88fbc69d9dfce076b1fdeaf0d1cd21fe4cace54f1cefe1c352d70cc8fa2898fe1b61fb0

    • SSDEEP

      1536:unjFXblMp3wgDkbivVSm16KTOKjLIJXc:unrAwgDkbicmbOKj0JM

    • Detect Xworm Payload

    • Fantom

      Ransomware which hides encryption process behind fake Windows Update screen.

    • Modifies WinLogon for persistence

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Renames multiple (3048) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Disables Task Manager via registry modification

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

    • Blocklisted process makes network request

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

3
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Tasks