Overview

overview

10

Static

static

10

2024-04-08...ry.exe

windows7-x64

10

2024-04-08...ry.exe

windows10-2004-x64

10

Resubmissions

20/06/2024, 08:48

240620-kqtzqsydnc 10

08/04/2024, 07:35

240408-jer6bsfc6w 10

Analysis

  • max time kernel
    92s
  • max time network
    98s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/04/2024, 07:35

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General

  • Target

    2024-04-08_bc7d2982cf93e751f42e42e649856949_wannacry.exe

  • Size

    435KB

  • MD5

    bc7d2982cf93e751f42e42e649856949

  • SHA1

    5d760bf9bacdd2dbb77c1c31af142025fe8a1a91

  • SHA256

    88003a5d7e92939d923369ef7d7a9d54230dd8aa1e97760a04df75b89aa62126

  • SHA512

    610c05f78f380c1875160d76ec08e5c5b5cf37c17c759ff51fdfa86dc0191e88c7e174789450f754c469476afdfeb45d4cc4ed6ba17e52b39ad3b2faaaad2524

  • SSDEEP

    12288:34J5PLJED4FtD2IOyd0K5Qzpi/MhHvFOHHHRw3+Ue70VkF33T8Wx355N:3QWOYKAJqnxLH

Score
10/10
chaosevasionpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Default\READ_SOLUTION.txt

Ransom Note
If you are opportune to see this message right now, that means your data security has been compromised !!! You have been hit hard by a sophisticated Ransomware Attack by CROCODILE SMILE, LOL. This Attack is known as OPERATION FLUSH. All your critical and confidential files, including private documents, photos, databases, and other important informations, have been encrypted, leaked, and transferred to our servers. In accordance with European data protection regulations, we are reaching out to inform you of this breach and to offer assistance in recovering your encrypted files. We acknowledge the gravity of the situation and are fully dedicated to swiftly delivering a solution. Our priority is to safeguard your organization's reputation and ensure the confidentiality of your files and documents remains intact, free from any leaks or compromises. To initiate the decryption process and retrieve your files, please follow these official steps: 1) Contact our designated communication channel via Telegram ID: CrocodileSmile 2) Make the necessary arrangements to obtain 20.6 Bitcoin, as payment for the decryption service. Please note that decryption can only be completed upon receipt of payment in Bitcoins. 3) Upon successful payment, we will provide you with the decryption key required to swiftly decrypt all affected files. We assure you that compliance with these instructions is crucial for the recovery of your data. We urge you to act swiftly to mitigate further data loss and restore the integrity of your information assets. Should you require any clarification or assistance, do not hesitate to contact us through the designated communication channel.

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Detects command variations typically used by ransomware 2 IoCs
  • Detects executables containing many references to VEEAM. Observed in ransomware 2 IoCs
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (186) 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 2 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 2 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 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\2024-04-08_bc7d2982cf93e751f42e42e649856949_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-08_bc7d2982cf93e751f42e42e649856949_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3984
    • 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:1256
      • 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:2044
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:624
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2076
      • 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:4812
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:900
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4956
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1876
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2132
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ_SOLUTION.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:1564
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:632
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1504
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2176
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2264

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\2024-04-08_bc7d2982cf93e751f42e42e649856949_wannacry.exe.log
      Filesize

      1KB

      MD5

      baf55b95da4a601229647f25dad12878

      SHA1

      abc16954ebfd213733c4493fc1910164d825cac8

      SHA256

      ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

      SHA512

      24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

      Download Submit

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

      435KB

      MD5

      bc7d2982cf93e751f42e42e649856949

      SHA1

      5d760bf9bacdd2dbb77c1c31af142025fe8a1a91

      SHA256

      88003a5d7e92939d923369ef7d7a9d54230dd8aa1e97760a04df75b89aa62126

      SHA512

      610c05f78f380c1875160d76ec08e5c5b5cf37c17c759ff51fdfa86dc0191e88c7e174789450f754c469476afdfeb45d4cc4ed6ba17e52b39ad3b2faaaad2524

      Download Submit

    • C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Fax Recipient.lnk
      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      Download Submit

    • C:\Users\Default\READ_SOLUTION.txt
      Filesize

      1KB

      MD5

      faba0e52e452fb256d3901b8ec1df56c

      SHA1

      a38022b53fdec72d447793ca584141b32c87f1a9

      SHA256

      1403f8a01c4359367cc06a63e2c382146f7cf8f297cf9d66b325f54823105fd2

      SHA512

      849a08ea30209c17c4dcd34521af2c27e4d062f4b6736c0418dce0c3f04de08f90cae36e433a87186bf0bf257a943e57685cc285b6d2171daf48e35e9a5fa737

      Download Submit

    • memory/1256-16-0x00007FF9CC9B0000-0x00007FF9CD471000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/1256-1200-0x00007FF9CC9B0000-0x00007FF9CD471000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3984-0-0x0000000000E50000-0x0000000000EC4000-memory.dmp

      Filesize

      464KB

      Download

    • memory/3984-1-0x00007FF9CC9B0000-0x00007FF9CD471000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3984-2-0x0000000001790000-0x00000000017A0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/3984-15-0x00007FF9CC9B0000-0x00007FF9CD471000-memory.dmp

      Filesize

      10.8MB

      Download