Overview

overview

10

Static

static

10

209779474d...be.exe

windows7_x64

10

209779474d...be.exe

windows10_x64

10

Analysis

  • max time kernel
    131s
  • max time network
    128s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09-11-2020 20:17

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General

  • Target

    209779474d4b8e7246245092e7d094ce5730c5c1d36bc03d9b8120f211dc3ebe.exe

  • Size

    94KB

  • MD5

    69f1172b3f31746992b86467578d5ab2

  • SHA1

    f24491dc99ad02f0d1c502b312df0b51670db738

  • SHA256

    209779474d4b8e7246245092e7d094ce5730c5c1d36bc03d9b8120f211dc3ebe

  • SHA512

    a893f5d07f3db175eec9441197b499ce856a089386a2d95f0dd4cd37734e060f9216125425f229841e8a8c825dddc2c26e82ccd41d802d7f55dbf0ea321b7c46

Score
10/10
netwalkerpersistenceransomwarespyware

Malware Config

Extracted

Path

C:\Users\Public\Libraries\CBC76-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .cbc76 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised, rebooting/shutdown will cause you to lose files without the possibility of recovery and even god will not be able to help you, it could be files on the network belonging to other users, sure you want to take that responsibility? -- Our encryption algorithms are very strong and your files are very well protected, you can't hope to recover them without our help. The only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypt program, you may damage them and then they will be impossible to recover. We advise you to contact us as soon as possible, otherwise there is a possibility that your files will never be returned. For us this is just business and to prove to you our seriousness, we will decrypt you some files for free, but we will not wait for your letter for a long time, mail can be abused, we are moving on, hurry up with the decision. Сontact us: 1.sevenoneone@cock.li 2.kavariusing@tutanota.com Don't forget to include your code in the email: {code_d4d5fe82_cbc76: YHuSxON0Sn18R5rLUQIvfGqq28BzNlqwLUOR8cvq1mb2VxMdMp eFs/ECq1rXhJ24oa+jjEjLuvPOLBejsve7nATWDZORQT45gv7V 1FuC0v4g7w/XKhUeUTmEG2vYIzwnT3RrgiRdNhMC9fFg43DU8/ ySqopWEmVEkHCWbH2v81+c8HG3iCmKwu5oYji+x28sMiqZ54br LHatEJrHH+bl5pHMLsxHUqO2EYxsJumzxQeueNVR2BDWP/s/Lm TPdiUrhB/T4efKVWsPyv4UBT4zmFtIylw=}
Emails

sevenoneone@cock.li

kavariusing@tutanota.com

Extracted

Path

C:\Users\Admin\Music\CBC76-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .cbc76 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised, rebooting/shutdown will cause you to lose files without the possibility of recovery and even god will not be able to help you, it could be files on the network belonging to other users, sure you want to take that responsibility? -- Our encryption algorithms are very strong and your files are very well protected, you can't hope to recover them without our help. The only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypt program, you may damage them and then they will be impossible to recover. We advise you to contact us as soon as possible, otherwise there is a possibility that your files will never be returned. For us this is just business and to prove to you our seriousness, we will decrypt you some files for free, but we will not wait for your letter for a long time, mail can be abused, we are moving on, hurry up with the decision. Сontact us: 1.sevenoneone@cock.li 2.kavariusing@tutanota.com Don't forget to include your code in the email: {code_d4d5fe82_cbc76: YHuSxON0Sn18R5rLUQIvfGqq28BzNlqwLUOR8cvq1mb2VxMdMp eFs/ECq1rXhJ24oa+jjEjLuvPOLBejsve7nATWDZORQT45gv7V 1FuC0v4g7w/XKhUeUTmEG2vYIzwnT3RrgiRdNhMC9fFg43DU8/ ySqopWEmVEkHCWbH2v81+c8HG3iCmKwu5oYji+x28sMiqZ54br LHatEJrHH+bl5pHMLsxHUqO2EYxsJumzxQeueNVR2BDWP/s/Lm TPdiUrhB/T4efKVWsPyv4UBT4zmFtIylw=}Hi! Your files are encrypted. All encrypted files for this computer has extension: .cbc76 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised, rebooting/shutdown will cause you to lose files without the possibility of recovery and even god will not be able to help you, it could be files on the network belonging to other users, sure you want to take that responsibility? -- Our encryption algorithms are very strong and your files are very well protected, you can't hope to recover them without our help. The only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypt program, you may damage them and then they will be impossible to recover. We advise you to contact us as soon as possible, otherwise there is a possibility that your files will never be returned. For us this is just business and to prove to you our seriousness, we will decrypt you some files for free, but we will not wait for your letter for a long time, mail can be abused, we are moving on, hurry up with the decision. Сontact us: 1.sevenoneone@cock.li 2.kavariusing@tutanota.com Don't forget to include your code in the email: {code_d4d5fe82_cbc76: YHuSxON0Sn18R5rLUQIvfGqq28BzNlqwLUOR8cvq1mb2VxMdMp eFs/ECq1rXhJ24oa+jjEjLuvPOLBejsve7nATWDZORQT45gv7V 1FuC0v4g7w/XKhUeUTmEG2vYIzwnT3RrgiRdNhMC9fFg43DU8/ ySqopWEmVEkHCWbH2v81+c8HG3iCmKwu5oYji+x28sMiqZ54br LHatEJrHH+bl5pHMLsxHUqO2EYxsJumzxQeueNVR2BDWP/s/Lm TPdiUrhB/T4efKVWsPyv4UBT4zmFtIylw=}
Emails

sevenoneone@cock.li

kavariusing@tutanota.com

Signatures

  • Detected Netwalker Ransomware 2 IoCs

    Detected unpacked Netwalker executable.

  • Netwalker Ransomware

    Ransomware family with multiple versions. Also known as MailTo.

    ransomwarenetwalker
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 17165 IoCs
  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 25845 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\209779474d4b8e7246245092e7d094ce5730c5c1d36bc03d9b8120f211dc3ebe.exe
    "C:\Users\Admin\AppData\Local\Temp\209779474d4b8e7246245092e7d094ce5730c5c1d36bc03d9b8120f211dc3ebe.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1028
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\system32\explorer.exe"
      2⤵
      • Modifies extensions of user files
      • Deletes itself
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2492
      • C:\Windows\SysWOW64\explorer.exe
        "C:\Windows\system32\explorer.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3784
        • C:\Windows\system32\vssadmin.exe
          C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:676
      • C:\Windows\SysWOW64\notepad.exe
        C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\CBC76-Readme.txt"
        3⤵
          PID:4412
        • C:\Windows\system32\vssadmin.exe
          C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:6752
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:184

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Modify Existing Service

    1
    T1031

    Privilege Escalation

    Defense Evasion

    File Deletion

    2
    T1107

    Modify Registry

    2
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Lateral Movement

    Collection

    Data from Local System

    1
    T1005

    Exfiltration

    Command and Control

    Impact

    Inhibit System Recovery

    2
    T1490

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\Desktop\CBC76-Readme.txt
      MD5

      6e9cdd3f39f50903beba6b8afe6968c8

      SHA1

      5845aa21bc374eeb794de83dda1afe43086e8d8b

      SHA256

      f23e4bafdfed627c0b2ec831cd0abbaace9943426ee6ce7434713b3de7bddd21

      SHA512

      e65f173a2b0e350f0498b94fbf98b66a8f13c7f5f0f84c4a82e66e61a9aa3ece9549b11f87931cff01ee855d7fb9829898b02d27f21a507144b9cedb537a7868

      Download Submit
    • memory/676-4-0x0000000000000000-mapping.dmp
      Download
    • memory/1028-1-0x0000000000BC0000-0x0000000000BDB000-memory.dmp
      Filesize

      108KB

      Download
    • memory/2492-0-0x0000000000000000-mapping.dmp
      Download
    • memory/2492-2-0x0000000002B80000-0x0000000002B9B000-memory.dmp
      Filesize

      108KB

      Download
    • memory/3784-3-0x0000000000000000-mapping.dmp
      Download
    • memory/4412-6-0x0000000000000000-mapping.dmp
      Download
    • memory/6752-7-0x0000000000000000-mapping.dmp
      Download