Overview

overview

10

Static

static

10

2520b15068...a8.exe

windows7-x64

10

2520b15068...a8.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    151s
  • max time network
    43s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    12-10-2022 09:57

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General

  • Target

    2520b15068fa108c947db179377c6b462f2c4f47037168bf8c69fcb668cb11a8.exe

  • Size

    69KB

  • MD5

    80372de850597bd9e7e021a94f13f0a1

  • SHA1

    037db820c8dee94ae25a439b758a2b89f527cbb4

  • SHA256

    2520b15068fa108c947db179377c6b462f2c4f47037168bf8c69fcb668cb11a8

  • SHA512

    f43db3569ac60d6ed55b9a3a24dcb459e14b0bd944e9405a8cb2bfb686eaeff31c82ffcd6c477d6a6affe9014ae8ed7d8af174e8ceebbcf00b64ad293901a77a

  • SSDEEP

    1536:juCWRxL7hbUiQfovecnXUU+hhOZuIWiFp+ZfaBZebC33O+Pd71vb:KCWf7VJQfmeMXvkhOZu1iFBBZebC3F7t

Score
10/10
netwalkerransomwarespywarestealer

Malware Config

Extracted

Path

C:\ProgramData\Package Cache\{ca67548a-5ebe-413a-b50c-4b9ceb6d66c6}\C1AEB2-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .c1aeb2 -- 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: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_c1aeb2: t79dGD6pqd8gJWjomLBMbN/+UoH/U7Oo96A/NIo72lOweViung YVfMO62/6Zq0xypyUD8QcfSzYxOqR/vHW5Jb5CCeYVSNxUAg4e DYism7Pmmx7vVnWIroL8xQM7luyZ2rHesOPaHiQrj2UXqCe+VC JCi6K4zysY9/2IfMlo67aS8s8JY4YpTEUpSzuTrqCEGgYflNOk PjJSPmcd2LAiyhleAjIrxwaHXWNQwtYTVBpOH7H/6DaK5ok6KC bkpNPPfI6b4aB2MohoaRre2UZePPyC4eUkMs+k4A==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • 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 10 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2520b15068fa108c947db179377c6b462f2c4f47037168bf8c69fcb668cb11a8.exe
    "C:\Users\Admin\AppData\Local\Temp\2520b15068fa108c947db179377c6b462f2c4f47037168bf8c69fcb668cb11a8.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:1872
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1352
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:5036

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2
T1107

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

  • memory/1352-55-0x0000000000000000-mapping.dmp
    Download
  • memory/1872-54-0x0000000075841000-0x0000000075843000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1872-56-0x0000000039AF0000-0x0000000039B6D000-memory.dmp
    Filesize

    500KB

    Download