Overview

overview

10

Static

static

10

Ransomewar...er.exe

windows7-x64

10

Ransomewar...er.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    92s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-12-2024 17:01

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General

  • Target

    RansomewareBuilder.exe

  • Size

    5.4MB

  • MD5

    e326e0bb654c0c28d1683c3f740e9a9d

  • SHA1

    9c1cbd909ab5897532c11be445cf8384f71ee9b7

  • SHA256

    aad594c4d58ad64350c4e9b4314dcf7fa5b8bb70eb41b0d20f6a0c49a058086c

  • SHA512

    86c01e92a90ee6573e2f0e384191f0b4ee56ddb92ad9bd8023cbf86a4566d999d56e186eacdfc0ce6f0bb3c4960def13beacb067444a1a229ad7d58d81ba5f91

  • SSDEEP

    49152:NuKIx29kk3sN2rEt/U964aKjSEvoYY+A2N:

Score
10/10
chaosdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\read_it.txt

Ransom Note
~~~ RdpLocker Recode the world's fastest ransomware~ ~ ~ >>>> Your data are stolen and encrypted >>>> Info Our encryption is undetectable and we can encrypt terabytes of data in minutes. A unique public and private key is generated exclusively for you. No one else can decrypt the files we have encrypted. Our services are cheap and reliable. >>>> What guarantees that we will not deceive you? We are not a politically motivated group and we do not need anything other than your money. If you pay, we will provide you the programs for decryption and we will delete your data. If we do not give you decrypters, or we do not delete your data after payment, then nobody will pay us in the future. Therefore to us our reputation is very important. We attack the companies worldwide and there is no dissatisfied victim after payment. You can contact us using Tox messenger without registration and SMS to negotiate the price. https://tox.chat/download.html Using Tox messenger, we will never know your real name, it means your privacy is guaranteed. Raven Tox ID: 25547C7BB6441FDFBB3BEEB09CC1EE3FF5B2A0389F6739A3DDA6948E464B611D7C885232644B
URLs

https://tox.chat/download.html

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Chaos family
    chaos
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (196) files with added filename extension

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

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Disables Task Manager via registry modification
    evasion
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 48 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\RansomewareBuilder.exe
    "C:\Users\Admin\AppData\Local\Temp\RansomewareBuilder.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3716
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3092
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1264
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:5008
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3252
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1836
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2304
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2960
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3492
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2692
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        • Suspicious use of FindShellTrayWindow
        PID:1908
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4184
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:996
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4956
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:228

    Network

    MITRE ATT&CK Enterprise v15

    Reconnaissance

    Resource Development

    Initial Access

    Execution

    Command and Scripting Interpreter

    1
    T1059

    Windows Management Instrumentation

    1
    T1047

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Defense Evasion

    Direct Volume Access

    1
    T1006

    Indicator Removal

    3
    T1070

    File Deletion

    3
    T1070.004

    Modify Registry

    2
    T1112

    Credential Access

    Credentials from Password Stores

    1
    T1555

    Credentials from Web Browsers

    1
    T1555.003

    Unsecured Credentials

    1
    T1552

    Credentials In Files

    1
    T1552.001

    Discovery

    Peripheral Device Discovery

    1
    T1120

    Query Registry

    3
    T1012

    System Information Discovery

    3
    T1082

    Lateral Movement

    Collection

    Data from Local System

    1
    T1005

    Command and Control

    Exfiltration

    Impact

    Defacement

    1
    T1491

    Inhibit System Recovery

    4
    T1490

    Replay Monitor

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    Downloads

    • C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\read_it.txt
      Filesize

      1KB

      MD5

      989c56f4275e6e04986ce8d7557519b4

      SHA1

      4e291831db153b00f3a8829a633fdbbe43cf9838

      SHA256

      169545482fca28799ea6fb239991d8e6dbee49e22efa25c81d5240fe5252ebf6

      SHA512

      37f3ee52a840b7b5ab53e515400f7d888c794640c0d327f224ae921dcfd5cc537b10de6d34e944e0a0460e518d4e721a92a417fed2824ab77533e8048ce1383d

      Download Submit

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\RansomewareBuilder.exe.log
      Filesize

      1KB

      MD5

      baf55b95da4a601229647f25dad12878

      SHA1

      abc16954ebfd213733c4493fc1910164d825cac8

      SHA256

      ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

      SHA512

      24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

      Download Submit

    • C:\Users\Admin\AppData\Roaming\svchost.exe
      Filesize

      5.4MB

      MD5

      e326e0bb654c0c28d1683c3f740e9a9d

      SHA1

      9c1cbd909ab5897532c11be445cf8384f71ee9b7

      SHA256

      aad594c4d58ad64350c4e9b4314dcf7fa5b8bb70eb41b0d20f6a0c49a058086c

      SHA512

      86c01e92a90ee6573e2f0e384191f0b4ee56ddb92ad9bd8023cbf86a4566d999d56e186eacdfc0ce6f0bb3c4960def13beacb067444a1a229ad7d58d81ba5f91

      Download Submit

    • C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\Magnify.lnk
      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      Download Submit

    • memory/3092-15-0x00007FFEF6F00000-0x00007FFEF79C1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3092-1250-0x00007FFEF6F00000-0x00007FFEF79C1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3716-0-0x00007FFEF6F03000-0x00007FFEF6F05000-memory.dmp

      Filesize

      8KB

      Download

    • memory/3716-1-0x00000000007B0000-0x0000000000D1E000-memory.dmp

      Filesize

      5.4MB

      Download

    • memory/3716-2-0x00007FFEF6F00000-0x00007FFEF79C1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3716-16-0x00007FFEF6F00000-0x00007FFEF79C1000-memory.dmp

      Filesize

      10.8MB

      Download