Resubmissions

05/02/2025, 08:55

250205-kvkxmayrcz10

05/02/2025, 06:37

250205-hdsvsswldm10

17/03/2024, 04:49

240317-ffz1saef6510

Analysis

  • max time kernel
    151s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/03/2024, 04:49

General

  • Target
    ransomwares/Cerber 5/Cerber 5.exe
  • Size 313KB
  • Sample240317-ffz1saef65
  • SHA256 b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___K5M2_.txt

  • cerber

Ransom Note
  • Hi, I'am CRBR ENCRYPTOR ;) ----- ALL YOUR DOCUMENTS, PH0T0S, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ----- The only one way to decrypt your files is to receive the private key and decryption program. To receive the private key and decryption program go to any decrypted folder, inside there is the special file (*_R_E_A_D___T_H_I_S_*) with complete instructions how to decrypt your files. If you cannot find any (*_R_E_A_D___T_H_I_S_*) file at your PC, follow the instructions below: ----- 1. Download "Tor Browser" from https://www.torproject.org/ and install it. 2. In the "Tor Browser" open your personal page here: http://xpcx6erilkjced3j.onion/A112-D896-B9FC-0098-B0F1 Note! This page is available via "Tor Browser" only. ----- Also you can use temporary addresses on your personal page without using "Tor Browser". ----- 1. http://xpcx6erilkjced3j.1n5mod.top/A112-D896-B9FC-0098-B0F1 2. http://xpcx6erilkjced3j.19kdeh.top/A112-D896-B9FC-0098-B0F1 3. http://xpcx6erilkjced3j.1mpsnr.top/A112-D896-B9FC-0098-B0F1 4. http://xpcx6erilkjced3j.18ey8e.top/A112-D896-B9FC-0098-B0F1 5. http://xpcx6erilkjced3j.17gcun.top/A112-D896-B9FC-0098-B0F1 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs
  • http://xpcx6erilkjced3j.onion/A112-D896-B9FC-0098-B0F1

  • http://xpcx6erilkjced3j.1n5mod.top/A112-D896-B9FC-0098-B0F1

  • http://xpcx6erilkjced3j.19kdeh.top/A112-D896-B9FC-0098-B0F1

  • http://xpcx6erilkjced3j.1mpsnr.top/A112-D896-B9FC-0098-B0F1

  • http://xpcx6erilkjced3j.18ey8e.top/A112-D896-B9FC-0098-B0F1

  • http://xpcx6erilkjced3j.17gcun.top/A112-D896-B9FC-0098-B0F1

Signatures

  • Cerber

    Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

  • Contacts a large (1111) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Modifies Windows Firewall 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Drops file in System32 directory 38 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 20 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 1 IoCs
  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ransomwares\Cerber 5\Cerber 5.exe
    "C:\Users\Admin\AppData\Local\Temp\ransomwares\Cerber 5\Cerber 5.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Enumerates connected drives
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:212
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:3940
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:2896
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___GKPI_.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
        PID:4836
      • C:\Windows\SysWOW64\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___DDC6_.txt
        2⤵
        • Opens file in notepad (likely ransom note)
        PID:948
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /d /c taskkill /f /im "C" > NUL & ping -n 1 127.0.0.1 > NUL & del "C" > NUL && exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1792
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im "C"
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2044
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 1 127.0.0.1
          3⤵
          • Runs ping.exe
          PID:2148
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1404 --field-trial-handle=3488,i,1267426273081718772,6254127258555406296,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:2076

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            _R_E_A_D___T_H_I_S___8RSYGI_.hta

            • Path C:\Users\Admin\AppData\Local\Microsoft\OneNote\16.0\cache\_R_E_A_D___T_H_I_S___8RSYGI_.hta
            • Size 76KB
            • SHA256 2ffed10c9f97de9137b0e6492337c157bc1a7f79dd4b4ba7d70ae597217c67b3
            • MD5 SHA1 SHA512 SSDEEP

            _R_E_A_D___T_H_I_S___K5M2_.txt

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___K5M2_.txt
            • Size 1KB
            • SHA256 7e504f44f9f472426f2a7f93c14cd19710672c03e52213a1c1a1a10022afdd90
            • MD5 SHA1 SHA512

            memory/212-5-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/212-1-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/212-8-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/212-17-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/212-22-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/212-35-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/212-3-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/212-0-0x0000000001540000-0x0000000001571000-memory.dmp

            memory/212-397-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/212-417-0x0000000000400000-0x0000000000433000-memory.dmp

            memory/212-418-0x0000000000440000-0x000000000044E000-memory.dmp