Overview

overview

10

Static

static

1

Cerber5.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    93s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-11-2024 21:26

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General

  • Target

    Cerber5.exe

  • Size

    313KB

  • MD5

    fe1bc60a95b2c2d77cd5d232296a7fa4

  • SHA1

    c07dfdea8da2da5bad036e7c2f5d37582e1cf684

  • SHA256

    b3e1e9d97d74c416c2a30dd11858789af5554cf2de62f577c13944a19623777d

  • SHA512

    266c541a421878e1e175db5d94185c991cec5825a4bc50178f57264f3556080e6fe984ed0380acf022ce659aa1ca46c9a5e97efc25ff46cbfd67b9385fd75f89

  • SSDEEP

    6144:nl578cxdGY87FohbnmM2i8ito7wTmCbL94KCT3OAmK:nl59zH8MiM2z+NLQBN

Score
10/10
cerberdiscoveryevasionpersistenceprivilege_escalationransomware

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___U4L28_.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/F56F-032F-562A-0098-B8AF 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/F56F-032F-562A-0098-B8AF 2. http://xpcx6erilkjced3j.19kdeh.top/F56F-032F-562A-0098-B8AF 3. http://xpcx6erilkjced3j.1mpsnr.top/F56F-032F-562A-0098-B8AF 4. http://xpcx6erilkjced3j.18ey8e.top/F56F-032F-562A-0098-B8AF 5. http://xpcx6erilkjced3j.17gcun.top/F56F-032F-562A-0098-B8AF ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/F56F-032F-562A-0098-B8AF

http://xpcx6erilkjced3j.1n5mod.top/F56F-032F-562A-0098-B8AF

http://xpcx6erilkjced3j.19kdeh.top/F56F-032F-562A-0098-B8AF

http://xpcx6erilkjced3j.1mpsnr.top/F56F-032F-562A-0098-B8AF

http://xpcx6erilkjced3j.18ey8e.top/F56F-032F-562A-0098-B8AF

http://xpcx6erilkjced3j.17gcun.top/F56F-032F-562A-0098-B8AF

Signatures

  • Cerber

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

    ransomwarecerber
  • Cerber family
    cerber
  • Contacts a large (1100) amount of remote hosts 1 TTPs

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

    discovery
  • Modifies Windows Firewall 2 TTPs 2 IoCs
    evasion
  • 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
    ransomware
  • 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.

    persistenceprivilege_escalation
  • 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.

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

    Adversaries may check for Internet connectivity on compromised systems.

    discovery
  • Kills process with taskkill 1 IoCs
    evasion
  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • 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\Cerber5.exe
    "C:\Users\Admin\AppData\Local\Temp\Cerber5.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
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:640
    • 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:3240
    • 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:2184
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___FFITDJL0_.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2600
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___ZXNS1GG6_.txt
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:1032
    • 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⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:748
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "C"
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1920
      • 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:884
  • C:\Windows\SysWOW64\werfault.exe
    werfault.exe /h /shared Global\5b5445237c2b4b0db4c6eaf05bbe3022 /t 4572 /p 2600
    1⤵
      PID:2316

    Network

    MITRE ATT&CK Enterprise v15

    Reconnaissance

    Resource Development

    Initial Access

    Execution

    Persistence

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Event Triggered Execution

    1
    T1546

    Netsh Helper DLL

    1
    T1546.007

    Privilege Escalation

    Create or Modify System Process

    1
    T1543

    Windows Service

    1
    T1543.003

    Event Triggered Execution

    1
    T1546

    Netsh Helper DLL

    1
    T1546.007

    Defense Evasion

    Impair Defenses

    1
    T1562

    Disable or Modify System Firewall

    1
    T1562.004

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    Network Service Discovery

    1
    T1046

    Peripheral Device Discovery

    1
    T1120

    Query Registry

    2
    T1012

    Remote System Discovery

    1
    T1018

    System Information Discovery

    3
    T1082

    System Location Discovery

    1
    T1614

    System Language Discovery

    1
    T1614.001

    System Network Configuration Discovery

    1
    T1016

    Internet Connection Discovery

    1
    T1016.001

    Lateral Movement

    Collection

    Command and Control

    Exfiltration

    Impact

    Defacement

    1
    T1491

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___47GMB9Y_.hta
      Filesize

      76KB

      MD5

      ace166dab3ea70d5dec6efccb49452a5

      SHA1

      5b683a3b912041ca3881c168169e769a99b47027

      SHA256

      6e24675cd66cced72f7b0ffc05b4442dd3e9bfb46124205f11afd573bd335bdb

      SHA512

      ddbb6c4ee4e3475193ee20ca88424c9787eda07bfa634d31a13510b1c49ccdde153bf46e72ad72cad5bf7451d855bfdc1792d480f59e05f104a9f25bca28f6b0

      Download Submit

    • C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___U4L28_.txt
      Filesize

      1KB

      MD5

      8bf2b6e6005c05bf9f8260cb7930b20f

      SHA1

      38645ad3cc0795f6d714b20d918d3e39cc759d43

      SHA256

      6e768448988a2dac656452eaa8f4f01983645b22be28a03603d4bbab25030bfb

      SHA512

      fcb962f3d1e0cbdbe982b226768d1720b22a7cece12ec9e97016bc195523365c32ab5e901662a5a167b98f3bb54fe891c7c2d6a6910b1239007eda9d38ab971f

      Download Submit

    • memory/640-0-0x0000000001520000-0x0000000001551000-memory.dmp

      Filesize

      196KB

      Download

    • memory/640-1-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

      Download

    • memory/640-2-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

      Download

    • memory/640-4-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

      Download

    • memory/640-7-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

      Download

    • memory/640-413-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

      Download

    • memory/640-418-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

      Download

    • memory/640-438-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

      Download