Overview

overview

10

Static

static

10

6f89cfef50...8a.exe

windows7_x64

10

6f89cfef50...8a.exe

windows10_x64

10

Analysis

  • max time kernel
    132s
  • max time network
    11s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

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General

  • Target

    6f89cfef50cadb9e7e986ec913eb8c68bb14af5c576fe98dbe41060edf3cfe8a.exe

  • Size

    91KB

  • MD5

    d635879fae28746375728409e6a14686

  • SHA1

    43eb0865681420e821fbc6acf6c5b0a377e55c72

  • SHA256

    6f89cfef50cadb9e7e986ec913eb8c68bb14af5c576fe98dbe41060edf3cfe8a

  • SHA512

    1c13e85c9295f7b2dfcc9ca3a301baea0b908760958c95863043620262946f6b905f2adf8183fab568feb886003d4f6d46f28262c92ce79038d7d3b49f04b307

Score
10/10
netwalkerpersistenceransomwarespyware

Malware Config

Extracted

Path

C:\06791-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .06791 -- 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: 1.2Hamlampampom@cock.li 2.Galgalgalgalk@tutanota.com Don't forget to include your code in the email: {code_2320c429_06791: z0mwVoO0ediz0fQakZGI44UWlUKoGjO5lSapzFkDxpcLsYgAdU 7RvlkxfC2r+rXvCAh+NVq1Jg0fMb1m987+kEn3oPPeGhQOKcQg I3+Y8m0gqHjohPtLyCoN+Fq99ZmF35d0WBN16ptj7RUabDUx3F FM4KIGLpHXsbJ+e2ajfqa3989vgmO9iGD4HpLLp49dgErfaxZ1 9DOuWUgEWllf8zVnRy3cZA1JuRIgMAN5Ia/yGemYqTwzYdMWfn o7ZdwnuIkOvdYcahSw4PEyXnMSu8CNGlk=}
Emails

2Hamlampampom@cock.li

Galgalgalgalk@tutanota.com

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Office14\06791-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .06791 -- 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: 1.2Hamlampampom@cock.li 2.Galgalgalgalk@tutanota.com Don't forget to include your code in the email: {code_2320c429_06791: z0mwVoO0ediz0fQakZGI44UWlUKoGjO5lSapzFkDxpcLsYgAdU 7RvlkxfC2r+rXvCAh+NVq1Jg0fMb1m987+kEn3oPPeGhQOKcQg I3+Y8m0gqHjohPtLyCoN+Fq99ZmF35d0WBN16ptj7RUabDUx3F FM4KIGLpHXsbJ+e2ajfqa3989vgmO9iGD4HpLLp49dgErfaxZ1 9DOuWUgEWllf8zVnRy3cZA1JuRIgMAN5Ia/yGemYqTwzYdMWfn o7ZdwnuIkOvdYcahSw4PEyXnMSu8CNGlk=}Hi! Your files are encrypted. All encrypted files for this computer has extension: .06791 -- 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: 1.2Hamlampampom@cock.li 2.Galgalgalgalk@tutanota.com Don't forget to include your code in the email: {code_2320c429_06791: z0mwVoO0ediz0fQakZGI44UWlUKoGjO5lSapzFkDxpcLsYgAdU 7RvlkxfC2r+rXvCAh+NVq1Jg0fMb1m987+kEn3oPPeGhQOKcQg I3+Y8m0gqHjohPtLyCoN+Fq99ZmF35d0WBN16ptj7RUabDUx3F FM4KIGLpHXsbJ+e2ajfqa3989vgmO9iGD4HpLLp49dgErfaxZ1 9DOuWUgEWllf8zVnRy3cZA1JuRIgMAN5Ia/yGemYqTwzYdMWfn o7ZdwnuIkOvdYcahSw4PEyXnMSu8CNGlk=}
Emails

2Hamlampampom@cock.li

Galgalgalgalk@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
  • 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 2 IoCs
  • Drops file in Program Files directory 7479 IoCs
  • Interacts with shadow copies 2 TTPs 3 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 16895 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6f89cfef50cadb9e7e986ec913eb8c68bb14af5c576fe98dbe41060edf3cfe8a.exe
    "C:\Users\Admin\AppData\Local\Temp\6f89cfef50cadb9e7e986ec913eb8c68bb14af5c576fe98dbe41060edf3cfe8a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\system32\explorer.exe"
      2⤵
      • Deletes itself
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1496
      • C:\Windows\system32\vssadmin.exe
        C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1976
      • C:\Windows\SysWOW64\explorer.exe
        "C:\Windows\system32\explorer.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1420
        • C:\Windows\system32\vssadmin.exe
          C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:1780
      • C:\Windows\SysWOW64\notepad.exe
        C:\Windows\system32\notepad.exe C:\Users\Admin\Desktop\06791-Readme.txt
        3⤵
          PID:3144
        • C:\Windows\system32\vssadmin.exe
          C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3768
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:1996

    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\06791-Readme.txt
      MD5

      41e0b80bb519a473c3511d75370eb7bf

      SHA1

      27829fd3d6c12febb14fda804a696f1fe5fd538f

      SHA256

      17d01900aab9a4e784ff8b31209d39dfc8ae2393fbfafc5b49f80b8cc5e9c4bf

      SHA512

      148ae8a31acc8e5dd0deca664810e79cc261d9b80e27123ae61f0c91ed1662a2d317244a6bfbf23b1e307797e0c25ce53fbc678ba6f93f1a79e81529a569aeda

      Download Submit
    • memory/1420-3-0x0000000000000000-mapping.dmp
      Download
    • memory/1496-0-0x0000000000000000-mapping.dmp
      Download
    • memory/1496-4-0x00000000001C0000-0x00000000001DB000-memory.dmp
      Filesize

      108KB

      Download
    • memory/1668-1-0x0000000000080000-0x000000000009B000-memory.dmp
      Filesize

      108KB

      Download
    • memory/1780-5-0x0000000000000000-mapping.dmp
      Download
    • memory/1976-2-0x0000000000000000-mapping.dmp
      Download
    • memory/3144-6-0x0000000000000000-mapping.dmp
      Download
    • memory/3768-7-0x0000000000000000-mapping.dmp
      Download