General

  • Target

    Fast.exe

  • Size

    55KB

  • Sample

    200707-9ta8ak7gbn

  • MD5

    4a3762d49120264f48deb29ca8668082

  • SHA1

    4ed52a74441ed443c09d51b625d07cded9e2ba08

  • SHA256

    b25587ffe305c8f1374213d7cdf586ad8e0f8d9cf1cd49b3ce0c1b34ba8fa5b3

  • SHA512

    dcbe5bb3f9cd2bbdacd0a2fad7728d7a78e07950e6cd8423bcd10f2c698e81b80fa9f8582af0925cae9a4c3c08c786ac38b07068a61a6b97d82a3f408a6b8f39

Malware Config

Extracted

Path

\??\c:\users\admin\desktop\info.txt

Ransom Note
All your files have been ENCRYPTED!!! Install ICQ software on your PC or mobile phone here https://icq.com/windows/ Write to our ICQ @VIRTUALHORSE https://icq.im/VIRTUALHORSE Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss.
URLs

https://icq.com/windows/

https://icq.im/VIRTUALHORSE

Extracted

Path

C:\Users\Admin\Desktop\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, install ICQ software on your PC or mobile phone here Write to our ICQ @VIRTUALHORSE Write this ID in the title of your message 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 tool that will decrypt all your files. Free decryption as guarantee How to obtain Bitcoins Also you can find other places to buy Bitcoins and beginners guide here: Attention!

Targets

    • Target

      Fast.exe

    • Size

      55KB

    • MD5

      4a3762d49120264f48deb29ca8668082

    • SHA1

      4ed52a74441ed443c09d51b625d07cded9e2ba08

    • SHA256

      b25587ffe305c8f1374213d7cdf586ad8e0f8d9cf1cd49b3ce0c1b34ba8fa5b3

    • SHA512

      dcbe5bb3f9cd2bbdacd0a2fad7728d7a78e07950e6cd8423bcd10f2c698e81b80fa9f8582af0925cae9a4c3c08c786ac38b07068a61a6b97d82a3f408a6b8f39

    • Phobos

      Phobos ransomware appeared at the beginning of 2019.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Deletes system backup catalog

      Ransomware often tries to delete backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Modifies Windows Firewall

    • Drops startup file

    • Reads user/profile data of web browsers

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

    • Adds Run entry to start application

    • Drops desktop.ini file(s)

    • Modifies service

MITRE ATT&CK Matrix ATT&CK v6

Execution

Command-Line Interface

1
T1059

Persistence

Modify Existing Service

2
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Deletion

4
T1107

Modify Registry

3
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

5
T1490

Tasks