Overview

overview

10

Static

static

3

cerber.exe

windows7-x64

10

cerber.exe

windows10-2004-x64

10

cryptowall.exe

windows7-x64

9

cryptowall.exe

windows10-2004-x64

3

jigsaw.exe

windows7-x64

10

jigsaw.exe

windows10-2004-x64

10

Locky.exe

windows7-x64

10

Locky.exe

windows10-2004-x64

10

131.exe

windows7-x64

1

131.exe

windows10-2004-x64

3

Matsnu-MBR...3 .exe

windows7-x64

7

Matsnu-MBR...3 .exe

windows10-2004-x64

3

027cc450ef...d9.dll

windows7-x64

10

027cc450ef...d9.dll

windows10-2004-x64

10

027cc450ef...ju.dll

windows7-x64

10

027cc450ef...ju.dll

windows10-2004-x64

10

myguy.hta

windows7-x64

10

myguy.hta

windows10-2004-x64

10

svchost.exe

windows7-x64

7

svchost.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    15/09/2024, 08:50

Sharing

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General

  • Target
    cerber.exe
  • Size 604KB
  • Sample240915-krmxtavfna
  • SHA256 e67834d1e8b38ec5864cfa101b140aeaba8f1900a6e269e6a94c90fcbfe56678
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
cerberdiscoveryevasionpersistenceprivilege_escalationransomware

Malware Config

Extracted

Path

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___PLEUIV6S_.txt

  • cerber

Ransom Note
  • CERBER RANSOMWARE ----- YOUR DOCUMENTS, PH0TOS, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ----- The only way to decrypt y0ur 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 (*_READ_THIS_FILE_*) with complete instructions how to decrypt your files. If you cannot find any (*_READ_THIS_FILE_*) 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://p27dokhpz2n7nvgr.onion/F391-A66D-9B32-0446-917A 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://p27dokhpz2n7nvgr.12hygy.top/F391-A66D-9B32-0446-917A 2. http://p27dokhpz2n7nvgr.14ewqv.top/F391-A66D-9B32-0446-917A 3. http://p27dokhpz2n7nvgr.14vvrc.top/F391-A66D-9B32-0446-917A 4. http://p27dokhpz2n7nvgr.129p1t.top/F391-A66D-9B32-0446-917A 5. http://p27dokhpz2n7nvgr.1apgrn.top/F391-A66D-9B32-0446-917A ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

  • http://p27dokhpz2n7nvgr.onion/F391-A66D-9B32-0446-917A

  • http://p27dokhpz2n7nvgr.12hygy.top/F391-A66D-9B32-0446-917A

  • http://p27dokhpz2n7nvgr.14ewqv.top/F391-A66D-9B32-0446-917A

  • http://p27dokhpz2n7nvgr.14vvrc.top/F391-A66D-9B32-0446-917A

  • http://p27dokhpz2n7nvgr.129p1t.top/F391-A66D-9B32-0446-917A

  • http://p27dokhpz2n7nvgr.1apgrn.top/F391-A66D-9B32-0446-917A

Signatures

  • Cerber

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

    ransomwarecerber
  • 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.

    discovery
  • Modifies Windows Firewall 2 TTPs 2 IoCs
    evasion
  • Deletes itself 1 IoCs
  • Drops startup file 1 IoCs
  • 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 9 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 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

    discovery
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Kills process with taskkill 1 IoCs
    evasion
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cerber.exe
    "C:\Users\Admin\AppData\Local\Temp\cerber.exe"
    1⤵
    • Drops startup file
    • 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
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2700
    • 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:3028
    • 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:2220
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___DU3WTN5_.hta"
      2⤵
      • Blocklisted process makes network request
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      PID:944
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___PLEUIV6S_.txt
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:1536
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1484
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im "cerber.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1712
      • 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:1224
  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde
    1⤵
    • System Location Discovery: System Language Discovery
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2652

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

        2
        T1112

        Credential Access

        Discovery

        Network Service Discovery

        1
        T1046

        Query Registry

        1
        T1012

        Remote System Discovery

        1
        T1018

        System Information Discovery

        2
        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

        CabE0C0.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\CabE0C0.tmp
        • Size 70KB
        • SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        TarE0F2.tmp
        • Path C:\Users\Admin\AppData\Local\Temp\TarE0F2.tmp
        • Size 181KB
        • SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        _R_E_A_D___T_H_I_S___DU3WTN5_.hta
        • Path C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___DU3WTN5_.hta
        • Size 75KB
        • SHA256 4fb14331407101d78c6b473ce351d69c6e24413529ed861dba15e3a4f2bf5c8d
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        _R_E_A_D___T_H_I_S___PLEUIV6S_.txt
        • Path C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___PLEUIV6S_.txt
        • Size 1KB
        • SHA256 b7185871b6482b4b047e495d41dd2a989b244e641c0ef9282ed1b7154fa1276d
        • MD5 SHA1 SHA512
        Submit Download

        memory/2652-289-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Download

        memory/2652-279-0x000000005FFF0000-0x0000000060000000-memory.dmp
        Download

        memory/2700-79-0x0000000000400000-0x0000000000435000-memory.dmp
        Download

        memory/2700-0-0x00000000002C0000-0x00000000002F1000-memory.dmp
        Download

        memory/2700-58-0x0000000000400000-0x0000000000435000-memory.dmp
        Download

        memory/2700-101-0x0000000000400000-0x0000000000435000-memory.dmp
        Download

        memory/2700-102-0x0000000000440000-0x000000000051F000-memory.dmp
        Download

        memory/2700-9-0x0000000000400000-0x0000000000435000-memory.dmp
        Download

        memory/2700-5-0x0000000000400000-0x0000000000435000-memory.dmp
        Download

        memory/2700-2-0x0000000000400000-0x0000000000435000-memory.dmp
        Download

        memory/2700-1-0x0000000000400000-0x0000000000435000-memory.dmp
        Download