Analysis

  • max time kernel
    52s
  • max time network
    52s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-09-2024 08:26

Errors

Reason
Machine shutdown

General

  • Target

  • Size

    313KB

  • MD5

    fe1bc60a95b2c2d77cd5d232296a7fa4

  • SHA1

    c07dfdea8da2da5bad036e7c2f5d37582e1cf684

  • SHA256

    b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d

  • SHA512

    266c541a421878e1e175db5d94185c991cec5825a4bc50178f57264f3556080e6fe984ed0380acf022ce659aa1ca46c9a5e97efc25ff46cbfd67b9385fd75f89

  • SSDEEP

    6144:nl578cxdGY87FohbnmM2i8ito7wTmCbL94KCT3OAmK:nl59zH8MiM2z+NLQBN

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Microsoft\OneNote\16.0\cache\_R_E_A_D___T_H_I_S___HO2ZM_.txt

Family

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/C9F2-FDAD-E493-0098-B8E4 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/C9F2-FDAD-E493-0098-B8E4 2. http://xpcx6erilkjced3j.19kdeh.top/C9F2-FDAD-E493-0098-B8E4 3. http://xpcx6erilkjced3j.1mpsnr.top/C9F2-FDAD-E493-0098-B8E4 4. http://xpcx6erilkjced3j.18ey8e.top/C9F2-FDAD-E493-0098-B8E4 5. http://xpcx6erilkjced3j.17gcun.top/C9F2-FDAD-E493-0098-B8E4 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/C9F2-FDAD-E493-0098-B8E4

http://xpcx6erilkjced3j.1n5mod.top/C9F2-FDAD-E493-0098-B8E4

http://xpcx6erilkjced3j.19kdeh.top/C9F2-FDAD-E493-0098-B8E4

http://xpcx6erilkjced3j.1mpsnr.top/C9F2-FDAD-E493-0098-B8E4

http://xpcx6erilkjced3j.18ey8e.top/C9F2-FDAD-E493-0098-B8E4

http://xpcx6erilkjced3j.17gcun.top/C9F2-FDAD-E493-0098-B8E4

Signatures

  • Cerber

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

  • Contacts a large (1098) 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Kills process with taskkill 1 IoCs
  • Modifies data under HKEY_USERS 15 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\[email protected]
    "C:\Users\Admin\AppData\Local\Temp\[email protected]"
    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
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4880
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall set allprofiles state on
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:3508
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\system32\netsh.exe advfirewall reset
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2528
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___DYEZII_.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3976
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___EJSMMDV2_.txt
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:4664
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /d /c taskkill /f /im "E" > NUL & ping -n 1 127.0.0.1 > NUL & del "C" > NUL && exit
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:4620
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "E"
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4596
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 1 127.0.0.1
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:2324
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:1688
    • C:\Windows\SysWOW64\werfault.exe
      werfault.exe /h /shared Global\804f9c09b35c472bb3066c4a463ecd45 /t 388 /p 3976
      1⤵
        PID:2748
      • C:\Windows\system32\LogonUI.exe
        "LogonUI.exe" /flags:0x4 /state0:0xa397e055 /state1:0x41c64e6d
        1⤵
        • Modifies data under HKEY_USERS
        • Suspicious use of SetWindowsHookEx
        PID:5072

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\OneNote\16.0\cache\_R_E_A_D___T_H_I_S___HO2ZM_.txt

        Filesize

        1KB

        MD5

        df2d836d2e5711720e90ca4bd7d1595b

        SHA1

        6f77faa39f590110a7b44fddb93e958877b7499d

        SHA256

        209b67923c6fb1bf34a2dd6b1c06a4552d6f3eecbd74203156d1f9606a2421d6

        SHA512

        54fbe0ff45e4e622fad783a262d32bcc393a51f5d6d1e6418207a067e957859308043a5f5909dfb51b94ed5378d35e07369a4bb614b3f5d98a45c0e2abde8d30

      • C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___1EJWQXB_.hta

        Filesize

        76KB

        MD5

        82bc8a3c206c950ee0119cb7784d8568

        SHA1

        d3f08ea404873d6a39410a475faf9a4b43e2eaee

        SHA256

        56772106fc04a4ea1cbd0e5d4d3aee3aa76688c87a94dc26c297fa33fd5590a0

        SHA512

        8404003d0d167ded450df01dcbee7f19e3c5551b69b438d38f1d060bdf441e7998f7761270070b040be2672ffbabf4ae0033109ce8fe0a28c1027ee116c83cf9

      • memory/4880-0-0x00000000014E0000-0x0000000001511000-memory.dmp

        Filesize

        196KB

      • memory/4880-1-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/4880-2-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/4880-4-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/4880-7-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/4880-418-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/4880-413-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/4880-434-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/4880-435-0x0000000000440000-0x000000000044E000-memory.dmp

        Filesize

        56KB