Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    02-12-2024 05:01

General

  • Target

    7189AED8B8AE6568.exe

  • Size

    137KB

  • MD5

    ff7559d2160f6732056ff5a19722e69a

  • SHA1

    aed67bf0c6e521fc552cbb4afe24a1c2eb286da7

  • SHA256

    c2fc050f33d51d5560da425d137ef1e318f16fe5d49ee894327e33c3e12755e3

  • SHA512

    020825f085dc4b08f2454be5425cd937a1f146843b76b445c6d5993d0581fedf93f84742e64b2abe986a8d5803a62a597962a04821488dea771c5354b6dfda10

  • SSDEEP

    3072:oLIQ8YzXEMZK1A2czbFk58x+o+EFz9/t2f65q8hb2bIoKb:ostYrEMw6Bxk5zOFNtgJGCUb

Malware Config

Extracted

Path

C:\ProgramData\biobio ransmoware.txt

Ransom Note
kasper Ransmoware ATTENTION! At the moment, your system is not protected. We can fix itand restore files. To get started, send a file to decrypt trial. You can trust us after opening the test file. 2.Do not use free programs to unlock. To restore the system write to both : [email protected] and [email protected] Telegram id:@biobiorans Your Decryption ID: 7189AED8B8AE6568

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (9084) files with added filename extension

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

  • Reads user/profile data of web browsers 3 TTPs

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

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Interacts with shadow copies 3 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\7189AED8B8AE6568.exe
    "C:\Users\Admin\AppData\Local\Temp\7189AED8B8AE6568.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:772
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2488
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2760
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1656
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:860
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2228

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\biobio ransmoware.txt

    Filesize

    402B

    MD5

    c8a67f8b8ce607ff54e7ea29fc000450

    SHA1

    4fc728744bb78a8c29f05c67e067d3af755c9cd9

    SHA256

    9a0cc9b664d21fc01f93ce946d8426cbfe4a38623e2b6fe06c967291fc9840ee

    SHA512

    43148dce167a73b32b26a031e97ca75b8f7be8bd0391217d855ed7ae1feee09a9a7a4f356f30d054a9c157cf29d25b24fff321c96f01cedca86cc348f3f556e9