Analysis

  • max time kernel
    133s
  • max time network
    135s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    18-10-2024 17:30

General

  • Target

    ecfb5c95d0f3d112650ef4047936e8fa5244c21c921f6c7a6963e92abab4949d.exe

  • Size

    52KB

  • MD5

    ba9210de03de945901f02792f7994871

  • SHA1

    20c4569cbb6f2650b02f6a5257faa8a8dfb298bd

  • SHA256

    ecfb5c95d0f3d112650ef4047936e8fa5244c21c921f6c7a6963e92abab4949d

  • SHA512

    277d26eea627b3da26664aaa4f72a7b79cd50311e45c59333563b4f58b76e6562cbaa1d55127c69d0830864721efa890fa824e1be381cca5e84bddc98f2b44d0

  • SSDEEP

    1536:EJJRZQJes5b0k5bbyu6hXOKJrkH6sNNW:oJRa4kLmNVOKJIasNE

Malware Config

Extracted

Path

C:\ProgramData\README_3805226.txt

Ransom Note
Hello! All your files have been encrypted... Your personal Id: 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 To decrypt your files, write to email: [email protected] or [email protected] In the letter, send your personal Id and 2 small encrypted files for trial decryption. If you dont get answer from [email protected] or [email protected] in 72 hours, you need to install tor browser, you can download it here: https://www.torproject.org/download/download.html.en After installation, open the tor browser to website: http://t5vj34iny72dpdu4.onion and follow the instructions. Do not try restore files without our help, this is useless, and can destroy you data permanetly. However, the files can be recovered even after the removal of our program and even after reinstalling the operating system. Download the decoding video here: https://content.screencast.com/users/tywlgpwg/folders/Default/media/3c1aeb4c-5386-41df-8eee-346487877522/decryption.avi
URLs

http://t5vj34iny72dpdu4.onion

https://content.screencast.com/users/tywlgpwg/folders/Default/media/3c1aeb4c-5386-41df-8eee-346487877522/decryption.avi

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Disables Task Manager via registry modification
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 24 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

    Adversaries may check for Internet connectivity on compromised systems.

  • Interacts with shadow copies 3 TTPs 1 IoCs

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

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\ecfb5c95d0f3d112650ef4047936e8fa5244c21c921f6c7a6963e92abab4949d.exe
    "C:\Users\Admin\AppData\Local\Temp\ecfb5c95d0f3d112650ef4047936e8fa5244c21c921f6c7a6963e92abab4949d.exe"
    1⤵
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2084
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Roaming\delback.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3700
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:3620
      • C:\Windows\system32\bcdedit.exe
        bcdedit.exe /set {default} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:4536
      • C:\Windows\system32\bcdedit.exe
        bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:200
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:640
      • C:\Windows\system32\PING.EXE
        ping -n 1 -w 5000 10.10.254.254
        3⤵
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:4120
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3496

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Package Cache\{5740BD44-B58D-321A-AFC0-6D3D4556DD6C}v12.0.40660\packages\vcRuntimeAdditional_amd64\vc_runtimeAdditional_x64.msi

    Filesize

    140KB

    MD5

    d77666da37c6e3973b2aa1cc46eeaea4

    SHA1

    947c733482d3d377dec3977e9aec8599fb9165d7

    SHA256

    4b9295a15537feb75d2ab49551c368e0b2b5f0e7c95a62219c9e4bb76aa1dd8f

    SHA512

    f48ba2a8068e451cc9cca1b7b27b47745d102af97f4b9460b304f8d3159d2b24d1fda2cb4aa32843c59eed99a76ef560d55d8530e8a5f8546cd7c8f5f619616c

  • C:\ProgramData\README_3805226.txt

    Filesize

    1KB

    MD5

    e6576170a46bee236a72f22d920d4f95

    SHA1

    d313ad1626b3efcf1b4c3ba6cdef6c8318e93239

    SHA256

    ca6c7a6c283d20691ce8110b19a87339802619b1816ce2f4dbbd2d2ffe9ef2e8

    SHA512

    c487142774cbd5b2c8b4d21e92a0b817dc19825562de595372bf08986a467ef7126c8bc9bc966d2557cdd117de5190247313f81201c1615078b91182c94080f4

  • C:\Users\Admin\AppData\Local\Temp\update.bat

    Filesize

    167B

    MD5

    d1df9bb96b34b2b9cba30dc139a00ef8

    SHA1

    44e80d8b875f296f7087eadc0584276fb68fa323

    SHA256

    17bdd9c1355d56e607eae45138d64ed86ebb1369dfcdf4f7ef313124c2f098bc

    SHA512

    7029c53a5de207b495c512bbfc160ccb1d76fb0101ff5bef497cc0bfa570228b5d641e3fb34ee4d17585a19e4ce0b1337f7e14750c70a014d69c1d8afa4f7ec2

  • C:\Users\Admin\AppData\Roaming\delback.bat

    Filesize

    147B

    MD5

    2450c91afcc2d4cc3dea374820bed314

    SHA1

    dd1b61d0aa6d1769018c1d3144de9bb960a64d3c

    SHA256

    4f157084c6e48b547e698ed83ae9a853a4db4b7a115249db272e3eb93316f7df

    SHA512

    b0b21d16b7f35bfc5526ed07407ec85a221a7a036827b65dce0a449d02a31f3f6f5ce2fbf94f0af01ce4a248b27ccf5f287dd2746ee423766be8d366f78ccc91

  • C:\vcredist2010_x86.log.html

    Filesize

    81KB

    MD5

    633eda609addfc25058a0a17c7af3629

    SHA1

    cb68d0825a2f4d832ed02c6504ad1f08ba7617f8

    SHA256

    777ff125b6cc3ab9b3099d331c38bcaf1dd80dea6fa316e5990c5a7c4e5769c7

    SHA512

    c5b8a7dd6ad7a0bf1752447d5d93c869d7f1976f52c5e102398924369f6ed1ee2c05d562add12679d6917508783ef377f7b1e21468c454b2f2a8733f8d843c3d

  • memory/2084-0-0x00007FFB31903000-0x00007FFB31904000-memory.dmp

    Filesize

    4KB

  • memory/2084-1-0x0000000000760000-0x0000000000774000-memory.dmp

    Filesize

    80KB

  • memory/2084-2-0x00007FFB31900000-0x00007FFB322EC000-memory.dmp

    Filesize

    9.9MB

  • memory/2084-498-0x00007FFB31903000-0x00007FFB31904000-memory.dmp

    Filesize

    4KB

  • memory/2084-672-0x00007FFB31900000-0x00007FFB322EC000-memory.dmp

    Filesize

    9.9MB

  • memory/2084-741-0x00007FFB31900000-0x00007FFB322EC000-memory.dmp

    Filesize

    9.9MB