Overview

overview

10

Static

static

qeSw.bin.exe

windows7_x64

10

qeSw.bin.exe

windows10_x64

10

Analysis

  • max time kernel
    66s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    29-09-2020 14:42

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General

  • Target

    qeSw.bin.exe

  • Size

    296KB

  • MD5

    258ed03a6e4d9012f8102c635a5e3dcd

  • SHA1

    a3bc2a30318f9bd2b51cb57e2022996e7f15c69e

  • SHA256

    8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160

  • SHA512

    967414274cb8d8fdf0e4dd446332b37060d54a726ab77f4ec704a5afe12162e098183add4342d1710db1e1c3b74035a001cf4c2d7790a27bf6d8381c34a96889

Score
10/10
ransomwarespywarepersistencenetwalker

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\User Account Pictures\C907CC-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .c907cc -- 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. -- Our encryption algorithms are very strong and your files are very well protected, 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 decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_c907cc: ywmLIZ9uzc7dXCfe179iw4YFXqQ4o4MlU9re5DxgEvH7Wnp97r pRpNfVyHdSJuD5xqUxNLXyiQyuwIeaCzt9cAhmEizR8v9841Zj AieSimuinFM5girXPmeWWYhIYpDgx1d2FODUojQMXncqy1WOmS 7tmvBtpO40+APyMtMrPONe4133YAoOfqaxWh0acStKNt/ZzAu2 DCwcaBUXzQlFZswa+GZ9dUSupzlGC+Z+UDNTxniNvBHy/bhz4R 0nMxZKCkphzxKs8UKaClJvebD6foEbzRcZyT11hA==}
URLs

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files\Microsoft Office\CLIPART\PUB60COR\C907CC-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .c907cc -- 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. -- Our encryption algorithms are very strong and your files are very well protected, 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 decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_c907cc: ywmLIZ9uzc7dXCfe179iw4YFXqQ4o4MlU9re5DxgEvH7Wnp97r pRpNfVyHdSJuD5xqUxNLXyiQyuwIeaCzt9cAhmEizR8v9841Zj AieSimuinFM5girXPmeWWYhIYpDgx1d2FODUojQMXncqy1WOmS 7tmvBtpO40+APyMtMrPONe4133YAoOfqaxWh0acStKNt/ZzAu2 DCwcaBUXzQlFZswa+GZ9dUSupzlGC+Z+UDNTxniNvBHy/bhz4R 0nMxZKCkphzxKs8UKaClJvebD6foEbzRcZyT11hA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .c907cc -- 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. -- Our encryption algorithms are very strong and your files are very well protected, 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 decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_c907cc: ywmLIZ9uzc7dXCfe179iw4YFXqQ4o4MlU9re5DxgEvH7Wnp97r pRpNfVyHdSJuD5xqUxNLXyiQyuwIeaCzt9cAhmEizR8v9841Zj AieSimuinFM5girXPmeWWYhIYpDgx1d2FODUojQMXncqy1WOmS 7tmvBtpO40+APyMtMrPONe4133YAoOfqaxWh0acStKNt/ZzAu2 DCwcaBUXzQlFZswa+GZ9dUSupzlGC+Z+UDNTxniNvBHy/bhz4R 0nMxZKCkphzxKs8UKaClJvebD6foEbzRcZyT11hA==}
URLs

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • Netwalker

    Ransomware believed to be a variant of 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
  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Drops file in Program Files directory 7476 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 8445 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\qeSw.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\qeSw.bin.exe"
    1⤵
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1032
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:904
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\C907CC-Readme.txt"
      2⤵
        PID:4528
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\1249.tmp.bat"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:4564
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1032
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1788
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:3836

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Privilege Escalation

    Defense Evasion

    File Deletion

    2
    T1107

    Modify Registry

    1
    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

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\1249.tmp.bat
      Download Submit
    • C:\Users\Admin\Desktop\C907CC-Readme.txt
      Download Submit
    • memory/904-0-0x0000000000000000-mapping.dmp
      Download
    • memory/1788-4-0x0000000000000000-mapping.dmp
      Download
    • memory/4528-1-0x0000000000000000-mapping.dmp
      Download
    • memory/4564-2-0x0000000000000000-mapping.dmp
      Download