Overview

overview

10

Static

static

3

cerber.exe

windows7-x64

cryptowall.exe

windows7-x64

9

jigsaw.exe

windows7-x64

10

Locky.exe

windows7-x64

10

131.exe

windows7-x64

1

Matsnu-MBR...3 .exe

windows7-x64

7

027cc450ef...d9.dll

windows7-x64

10

027cc450ef...ju.dll

windows7-x64

10

myguy.hta

windows7-x64

10

svchost.exe

windows7-x64

7

Resubmissions

05/08/2024, 22:23

240805-2ba2rathle10

27/04/2024, 00:38

240427-ay3xhafc5310

20/04/2024, 05:28

240420-f6ht7aad5w10

Sharing

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General

  • Target
    Ransomware-Samples-main.zip
  • Size 15.1MB
  • Sample240805-2ba2rathle
  • SHA256 bab1853454ca6fdd3acd471254101db1b805b601e309a49ec7b4b1fbcfc47ad7
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
cerberjigsawlockymimikatzbootkitdefense_evasiondiscoveryevasionexecutionimpactpersistenceprivilege_escalationransomwarespywarestealerupx

Malware Config

Extracted

Path

  • C:\Users\Admin\Desktop\_R_E_A_D___T_H_I_S___ZSG87OTT_.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/9F99-7CDB-3FA9-0446-917D 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/9F99-7CDB-3FA9-0446-917D 2. http://p27dokhpz2n7nvgr.14ewqv.top/9F99-7CDB-3FA9-0446-917D 3. http://p27dokhpz2n7nvgr.14vvrc.top/9F99-7CDB-3FA9-0446-917D 4. http://p27dokhpz2n7nvgr.129p1t.top/9F99-7CDB-3FA9-0446-917D 5. http://p27dokhpz2n7nvgr.1apgrn.top/9F99-7CDB-3FA9-0446-917D ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

  • http://p27dokhpz2n7nvgr.onion/9F99-7CDB-3FA9-0446-917D

  • http://p27dokhpz2n7nvgr.12hygy.top/9F99-7CDB-3FA9-0446-917D

  • http://p27dokhpz2n7nvgr.14ewqv.top/9F99-7CDB-3FA9-0446-917D

  • http://p27dokhpz2n7nvgr.14vvrc.top/9F99-7CDB-3FA9-0446-917D

  • http://p27dokhpz2n7nvgr.129p1t.top/9F99-7CDB-3FA9-0446-917D

  • http://p27dokhpz2n7nvgr.1apgrn.top/9F99-7CDB-3FA9-0446-917D

Extracted

Language

  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    http://french-cooking.com/myguy.exe

Targets

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

    • Cerber

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

      ransomwarecerber

    • Blocklisted process makes network request

    • Contacts a large (1096) amount of remote hosts

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

      discovery

    • Modifies Windows Firewall

      evasion

    • Deletes itself

    • Drops startup file

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1
    • Target
      cryptowall.bin
    • Size 240KB
    • SHA256 45317968759d3e37282ceb75149f627d648534c5b4685f6da3966d8f6fca662d
    • MD5 SHA1 SHA512 SSDEEP
    Score
    9/10
    defense_evasiondiscoveryexecutionimpactpersistenceransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Drops startup file

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

    behavioral2
    • Target
      jigsaw
    • Size 283KB
    • SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    jigsawpersistenceransomwarespywarestealer

    • Jigsaw Ransomware

      Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.

      ransomwarejigsaw

    • Renames multiple (2010) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence
    behavioral3
    • Target
      Locky
    • Size 180KB
    • SHA256 bc98c8b22461a2c2631b2feec399208fdc4ecd1cd2229066c2f385caa958daa3
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    lockydiscoveryransomware

    • Locky

      Ransomware strain released in 2016, with advanced features like anti-analysis.

      ransomwarelocky
    behavioral4
    • Target
      131.exe
    • Size 2.3MB
    • SHA256 2ecc525177ed52c74ddaaacd47ad513450e85c01f2616bf179be5b576164bf63
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    behavioral5
    • Target
      Matsnu-MBRwipingRansomware_1B2D2A4B97C7C2727D571BBF9376F54F_Inkasso Rechnung vom 27.05.2013 .com_
    • Size 102KB
    • SHA256 7634433f8fcf4d13fb46d680802e48eeb160e0f51e228cae058436845976381e
    • MD5 SHA1 SHA512 SSDEEP
    Score
    7/10
    discoverypersistenceupx

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral6
    • Target
      027cc450ef5f8c5f653329641ec1fed9.exe
    • Size 353KB
    • SHA256 027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    mimikatzbootkitdiscoverypersistencespywarestealer

    • Mimikatz

      mimikatz is an open source tool to dump credentials on Windows.

      mimikatz

    • mimikatz is an open source tool to dump credentials on Windows

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence
    behavioral7
    • Target
      027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745_98STJd8lju.bin
    • Size 353KB
    • SHA256 027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    mimikatzbootkitdiscoverypersistencespywarestealer

    • Mimikatz

      mimikatz is an open source tool to dump credentials on Windows.

      mimikatz

    • mimikatz is an open source tool to dump credentials on Windows

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence
    behavioral8
    • Target
      myguy.hta
    • Size 13KB
    • SHA256 ee29b9c01318a1e23836b949942db14d4811246fdae2f41df9f0dcd922c63bc6
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    discoveryexecution

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution
    behavioral9
    • Target
      svchost.exe
    • Size 704KB
    • SHA256 e5c643f1d8ecc0fd739d0bbe4a1c6c7de2601d86ab0fff74fd89c40908654be5
    • MD5 SHA1 SHA512 SSDEEP
    Score
    7/10
    discovery

    • Drops startup file

    • Creates a large amount of network flows

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

      discovery
    behavioral10

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Direct Volume Access

1
T1006

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Modify Registry

3
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Network Service Discovery

2
T1046

Remote System Discovery

1
T1018

System Information Discovery

1
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

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

2
T1490

Tasks