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
    120s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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\Desktop\_R_E_A_D___T_H_I_S___Z0KRB6PH_.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/ACEA-D512-C2EB-0098-B39C 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/ACEA-D512-C2EB-0098-B39C 2. http://xpcx6erilkjced3j.19kdeh.top/ACEA-D512-C2EB-0098-B39C 3. http://xpcx6erilkjced3j.1mpsnr.top/ACEA-D512-C2EB-0098-B39C 4. http://xpcx6erilkjced3j.18ey8e.top/ACEA-D512-C2EB-0098-B39C 5. http://xpcx6erilkjced3j.17gcun.top/ACEA-D512-C2EB-0098-B39C ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs
  • http://xpcx6erilkjced3j.onion/ACEA-D512-C2EB-0098-B39C

  • http://xpcx6erilkjced3j.1n5mod.top/ACEA-D512-C2EB-0098-B39C

  • http://xpcx6erilkjced3j.19kdeh.top/ACEA-D512-C2EB-0098-B39C

  • http://xpcx6erilkjced3j.1mpsnr.top/ACEA-D512-C2EB-0098-B39C

  • http://xpcx6erilkjced3j.18ey8e.top/ACEA-D512-C2EB-0098-B39C

  • http://xpcx6erilkjced3j.17gcun.top/ACEA-D512-C2EB-0098-B39C

Signatures

  • Cerber

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

  • Blocklisted process makes network request 5 IoCs
  • Contacts a large (1095) amount of remote hosts 1 TTPs

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

  • Modifies Windows Firewall 2 TTPs 2 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 Internet Explorer settings 1 TTPs 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 28 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⤵
    • Enumerates connected drives
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2936
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      PID:2300
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      PID:2608
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___D955O_.hta"
      2⤵
      • Blocklisted process makes network request
      • Modifies Internet Explorer settings
      PID:1976
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___Z0KRB6PH_.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:1996
    • 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:1764
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "C"
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2436
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2928

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
        • Size 67KB
        • SHA256 b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78
        • MD5 SHA1 SHA512 SSDEEP

        TarEA27.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\TarEA27.tmp
        • Size 175KB
        • SHA256 a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22
        • MD5 SHA1 SHA512 SSDEEP

        _R_E_A_D___T_H_I_S___D955O_.hta

        • Path C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___D955O_.hta
        • Size 76KB
        • SHA256 edde5c0c64c85e0a199a95a87ea7f865d4a232c268fff3972916ecdd3d43b101
        • MD5 SHA1 SHA512 SSDEEP

        _R_E_A_D___T_H_I_S___Z0KRB6PH_.txt

        • Path C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___Z0KRB6PH_.txt
        • Size 1KB
        • SHA256 dc87c1697cf12d65470e12a00acdd736f87161a45d29ba21a30492b427648eeb
        • MD5 SHA1 SHA512

        memory/2936-5-0x0000000000400000-0x0000000000433000-memory.dmp

        memory/2936-20-0x0000000000400000-0x0000000000433000-memory.dmp

        memory/2936-33-0x0000000000400000-0x0000000000433000-memory.dmp

        memory/2936-53-0x0000000000400000-0x0000000000433000-memory.dmp

        memory/2936-77-0x0000000000400000-0x0000000000433000-memory.dmp

        memory/2936-13-0x0000000000400000-0x0000000000433000-memory.dmp

        memory/2936-0-0x00000000001D0000-0x0000000000201000-memory.dmp

        memory/2936-116-0x0000000000400000-0x0000000000433000-memory.dmp

        memory/2936-117-0x0000000000440000-0x000000000044D000-memory.dmp

        memory/2936-2-0x0000000000400000-0x0000000000433000-memory.dmp

        memory/2936-1-0x0000000000400000-0x0000000000433000-memory.dmp