Analysis

  • max time kernel
    90s
  • max time network
    91s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241023-en
  • resource tags

    arch:x64arch:x86image:win11-20241023-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    31-01-2025 14:02

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___9L64O_.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/DA33-5161-7850-0098-BCD8 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/DA33-5161-7850-0098-BCD8 2. http://xpcx6erilkjced3j.19kdeh.top/DA33-5161-7850-0098-BCD8 3. http://xpcx6erilkjced3j.1mpsnr.top/DA33-5161-7850-0098-BCD8 4. http://xpcx6erilkjced3j.18ey8e.top/DA33-5161-7850-0098-BCD8 5. http://xpcx6erilkjced3j.17gcun.top/DA33-5161-7850-0098-BCD8 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/DA33-5161-7850-0098-BCD8

http://xpcx6erilkjced3j.1n5mod.top/DA33-5161-7850-0098-BCD8

http://xpcx6erilkjced3j.19kdeh.top/DA33-5161-7850-0098-BCD8

http://xpcx6erilkjced3j.1mpsnr.top/DA33-5161-7850-0098-BCD8

http://xpcx6erilkjced3j.18ey8e.top/DA33-5161-7850-0098-BCD8

http://xpcx6erilkjced3j.17gcun.top/DA33-5161-7850-0098-BCD8

Signatures

  • Cerber

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

  • Cerber family
  • Contacts a large (1090) amount of remote hosts 1 TTPs

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

  • Modifies Windows Firewall 2 TTPs 2 IoCs
  • 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 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\[email protected]
    "C:\Users\Admin\AppData\Local\Temp\[email protected]"
    1⤵
    • 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:3424
    • 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:4384
    • 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:2008
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___1O7WQUTZ_.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4680
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___YRHU0QPB_.txt
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:1288
    • 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:3504
      • 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:5064
      • 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:3396

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___1H5EQ_.hta

    Filesize

    76KB

    MD5

    c5225654095ab6f2a13f680d14983aea

    SHA1

    343de39e7a9d9f9cfbc0662065ae7f7da830f249

    SHA256

    7f556c0bb732eda206908f79d9e7c81bcc97dfaa870d8caca867c6cdf199d5a9

    SHA512

    dc3692a4d5900104e9f17a9c6f0411ec0f543bbc5b74c1dd5b6f2dca9e56f0afa31a45c97fe20d3978531681f0b32e617acec10597a4a0990495868bf1df64c9

  • C:\Users\Admin\AppData\Local\Microsoft\OneNote\16.0\cache\_R_E_A_D___T_H_I_S___9L64O_.txt

    Filesize

    1KB

    MD5

    345364120111863ed8d27a69b88c412a

    SHA1

    0e2da9744cda7fa39b8a7aed0215c1bba4014c83

    SHA256

    31bcc0274e782dd8b5294241fd95dccb55139fa3e2f72862e050a78ea0e1e857

    SHA512

    6c27fabcfa3746137bc49294b4e41e642ef15b0e8bcde7942e848434beff0a405ce3f87c075e2a8add3dd36b5e9b7c664a0a7914f8a9bb45a58c08d9c82ae2a4

  • memory/3424-0-0x0000000005EA0000-0x0000000005ED1000-memory.dmp

    Filesize

    196KB

  • memory/3424-1-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

  • memory/3424-2-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

  • memory/3424-4-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

  • memory/3424-7-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

  • memory/3424-431-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

  • memory/3424-448-0x0000000000400000-0x0000000000433000-memory.dmp

    Filesize

    204KB

  • memory/3424-449-0x0000000000440000-0x000000000044E000-memory.dmp

    Filesize

    56KB