Overview

overview

10

Static

static

10

84b8dbafd5...in.exe

windows7_x64

10

84b8dbafd5...in.exe

windows10_x64

10

Analysis

  • max time kernel
    154s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

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General

  • Target

    84b8dbafd5cd64fb300b30bf943430a18f34cad3f0d8f7251d34354fea85aab2.bin.exe

  • Size

    69KB

  • MD5

    c0dda75c6eae48a26383f54052e48ebc

  • SHA1

    3c4d317985bba081ffef4dce41150842ec6be08d

  • SHA256

    84b8dbafd5cd64fb300b30bf943430a18f34cad3f0d8f7251d34354fea85aab2

  • SHA512

    9909e1b47ba89b5efe2c03394912cf9504b1f7601e6d2905839e7901ffa8c586c25a140242d4e7fc8626827c8153e4f0c7a878a1d0690c45872ebcee14331efb

Score
10/10
netwalkerpersistenceransomwarespyware

Malware Config

Extracted

Path

C:\Program Files\Google\Chrome\Application\FECFC2-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .fecfc2 -- 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_fecfc2: IkVM6SJkFpqWtumkwp1PjRDx+U8PmCujeFD1fYY8rQKDxpicwp oxmpzPa6YXfwaRWoaNXI+FwCDNUcaX92JoXBWKeE/HyHV/vIj9 3tu7GYyVlojFkHGtxymjfGZ26fvHeXn3CR3u1CPpZcgOkrxSNQ CtPs7isEZ+0gbuvQL9YNLk52M7ncQIygu3Na6RT9ZrXxpQfrwo J3oW4ZQodKI5eULQkBPE+5rGK10Rfe37wo2EaI5Ok1+IIRVBq1 5Rl88zMa4UM1tIA8pEBDjm5Mr8g9q+lHUkqsfeOQ==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\Admin\Desktop\FECFC2-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .fecfc2 -- 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_fecfc2: IkVM6SJkFpqWtumkwp1PjRDx+U8PmCujeFD1fYY8rQKDxpicwp oxmpzPa6YXfwaRWoaNXI+FwCDNUcaX92JoXBWKeE/HyHV/vIj9 3tu7GYyVlojFkHGtxymjfGZ26fvHeXn3CR3u1CPpZcgOkrxSNQ CtPs7isEZ+0gbuvQL9YNLk52M7ncQIygu3Na6RT9ZrXxpQfrwo J3oW4ZQodKI5eULQkBPE+5rGK10Rfe37wo2EaI5Ok1+IIRVBq1 5Rl88zMa4UM1tIA8pEBDjm5Mr8g9q+lHUkqsfeOQ==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .fecfc2 -- 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_fecfc2: IkVM6SJkFpqWtumkwp1PjRDx+U8PmCujeFD1fYY8rQKDxpicwp oxmpzPa6YXfwaRWoaNXI+FwCDNUcaX92JoXBWKeE/HyHV/vIj9 3tu7GYyVlojFkHGtxymjfGZ26fvHeXn3CR3u1CPpZcgOkrxSNQ CtPs7isEZ+0gbuvQL9YNLk52M7ncQIygu3Na6RT9ZrXxpQfrwo J3oW4ZQodKI5eULQkBPE+5rGK10Rfe37wo2EaI5Ok1+IIRVBq1 5Rl88zMa4UM1tIA8pEBDjm5Mr8g9q+lHUkqsfeOQ==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .fecfc2 -- 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_fecfc2: IkVM6SJkFpqWtumkwp1PjRDx+U8PmCujeFD1fYY8rQKDxpicwp oxmpzPa6YXfwaRWoaNXI+FwCDNUcaX92JoXBWKeE/HyHV/vIj9 3tu7GYyVlojFkHGtxymjfGZ26fvHeXn3CR3u1CPpZcgOkrxSNQ CtPs7isEZ+0gbuvQL9YNLk52M7ncQIygu3Na6RT9ZrXxpQfrwo J3oW4ZQodKI5eULQkBPE+5rGK10Rfe37wo2EaI5Ok1+IIRVBq1 5Rl88zMa4UM1tIA8pEBDjm5Mr8g9q+lHUkqsfeOQ==}
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.

    spyware
  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Drops file in Program Files directory 3490 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 26545 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\84b8dbafd5cd64fb300b30bf943430a18f34cad3f0d8f7251d34354fea85aab2.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\84b8dbafd5cd64fb300b30bf943430a18f34cad3f0d8f7251d34354fea85aab2.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:1656
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1436
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Modifies service
    • Suspicious use of AdjustPrivilegeToken
    PID:4388

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

  • memory/1436-0-0x0000000000000000-mapping.dmp
    Download