Overview

overview

10

Static

static

10

a8c4b8096f...a5.exe

windows7_x64

10

a8c4b8096f...a5.exe

windows10_x64

10

Analysis

  • max time kernel
    153s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

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General

  • Target

    a8c4b8096fd12078acf5f08230e561381fe8d0859a5949825ab411f6312f5da5.exe

  • Size

    82KB

  • MD5

    bb9d6ca0aa3f5fbc9cd50b7d6388f29c

  • SHA1

    b4e254dd5d6243bc7a006541d9f5db0aa10dbe72

  • SHA256

    a8c4b8096fd12078acf5f08230e561381fe8d0859a5949825ab411f6312f5da5

  • SHA512

    34c344bb22fa1797f81eeccea896fc90f4563b8d8fbb5da45f8a64f7f63b452fbbc4df46db6e3865a18c2bd5f4436ec2e6552129b018a6286a75f5419fc7cdbb

Score
10/10
netwalkerpersistenceransomware

Malware Config

Extracted

Path

C:\D67DC-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .d67dc -- 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.kazkavkovkiz@cock.li 2.Hariliuios@tutanota.com Don't forget to include your code in the email: {code_d67dc:jblNnPSLg6m6IvMYhirtqpMrDI9ZqYxsy504Y9+w8bz2sKzm6a 5+LBgmAq7FrwIu+XG/RIgzxG5DttwHrnw7ddGI12jp9bslqsN+ 4o7niCx1cR2rlq8+OzsfAIsDBJhkFEwDOnPl3zyTc8PqhHOQu/ XzuNigSI97Pnyg+7FhFmjezGEIL35PRgr0NqGKEpVMPmNfudPE 9NAm3XALWVCpkkXJ30Oxj4zgkemfr5xJTKjSQvfhCqZSYpl+Pd OjMhdz8ZU29JL/rFfUN/25Pe7EFywihTw=}
Emails

kazkavkovkiz@cock.li

Hariliuios@tutanota.com

Extracted

Path

C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\REFINED\D67DC-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .d67dc -- 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.kazkavkovkiz@cock.li 2.Hariliuios@tutanota.com Don't forget to include your code in the email: {code_d67dc:jblNnPSLg6m6IvMYhirtqpMrDI9ZqYxsy504Y9+w8bz2sKzm6a 5+LBgmAq7FrwIu+XG/RIgzxG5DttwHrnw7ddGI12jp9bslqsN+ 4o7niCx1cR2rlq8+OzsfAIsDBJhkFEwDOnPl3zyTc8PqhHOQu/ XzuNigSI97Pnyg+7FhFmjezGEIL35PRgr0NqGKEpVMPmNfudPE 9NAm3XALWVCpkkXJ30Oxj4zgkemfr5xJTKjSQvfhCqZSYpl+Pd OjMhdz8ZU29JL/rFfUN/25Pe7EFywihTw=}Hi! Your files are encrypted. All encrypted files for this computer has extension: .d67dc -- 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.kazkavkovkiz@cock.li 2.Hariliuios@tutanota.com Don't forget to include your code in the email: {code_d67dc:jblNnPSLg6m6IvMYhirtqpMrDI9ZqYxsy504Y9+w8bz2sKzm6a 5+LBgmAq7FrwIu+XG/RIgzxG5DttwHrnw7ddGI12jp9bslqsN+ 4o7niCx1cR2rlq8+OzsfAIsDBJhkFEwDOnPl3zyTc8PqhHOQu/ XzuNigSI97Pnyg+7FhFmjezGEIL35PRgr0NqGKEpVMPmNfudPE 9NAm3XALWVCpkkXJ30Oxj4zgkemfr5xJTKjSQvfhCqZSYpl+Pd OjMhdz8ZU29JL/rFfUN/25Pe7EFywihTw=}
Emails

kazkavkovkiz@cock.li

Hariliuios@tutanota.com

Extracted

Path

C:\Users\Admin\Music\D67DC-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .d67dc -- 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.kazkavkovkiz@cock.li 2.Hariliuios@tutanota.com Don't forget to include your code in the email: {code_d67dc:jblNnPSLg6m6IvMYhirtqpMrDI9ZqYxsy504Y9+w8bz2sKzm6a 5+LBgmAq7FrwIu+XG/RIgzxG5DttwHrnw7ddGI12jp9bslqsN+ 4o7niCx1cR2rlq8+OzsfAIsDBJhkFEwDOnPl3zyTc8PqhHOQu/ XzuNigSI97Pnyg+7FhFmjezGEIL35PRgr0NqGKEpVMPmNfudPE 9NAm3XALWVCpkkXJ30Oxj4zgkemfr5xJTKjSQvfhCqZSYpl+Pd OjMhdz8ZU29JL/rFfUN/25Pe7EFywihTw=}Hi! Your files are encrypted. All encrypted files for this computer has extension: .d67dc -- 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.kazkavkovkiz@cock.li 2.Hariliuios@tutanota.com Don't forget to include your code in the email: {code_d67dc:jblNnPSLg6m6IvMYhirtqpMrDI9ZqYxsy504Y9+w8bz2sKzm6a 5+LBgmAq7FrwIu+XG/RIgzxG5DttwHrnw7ddGI12jp9bslqsN+ 4o7niCx1cR2rlq8+OzsfAIsDBJhkFEwDOnPl3zyTc8PqhHOQu/ XzuNigSI97Pnyg+7FhFmjezGEIL35PRgr0NqGKEpVMPmNfudPE 9NAm3XALWVCpkkXJ30Oxj4zgkemfr5xJTKjSQvfhCqZSYpl+Pd OjMhdz8ZU29JL/rFfUN/25Pe7EFywihTw=}Hi! Your files are encrypted. All encrypted files for this computer has extension: .d67dc -- 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.kazkavkovkiz@cock.li 2.Hariliuios@tutanota.com Don't forget to include your code in the email: {code_d67dc:jblNnPSLg6m6IvMYhirtqpMrDI9ZqYxsy504Y9+w8bz2sKzm6a 5+LBgmAq7FrwIu+XG/RIgzxG5DttwHrnw7ddGI12jp9bslqsN+ 4o7niCx1cR2rlq8+OzsfAIsDBJhkFEwDOnPl3zyTc8PqhHOQu/ XzuNigSI97Pnyg+7FhFmjezGEIL35PRgr0NqGKEpVMPmNfudPE 9NAm3XALWVCpkkXJ30Oxj4zgkemfr5xJTKjSQvfhCqZSYpl+Pd OjMhdz8ZU29JL/rFfUN/25Pe7EFywihTw=}
Emails

kazkavkovkiz@cock.li

Hariliuios@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
  • 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 9498 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 15169 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a8c4b8096fd12078acf5f08230e561381fe8d0859a5949825ab411f6312f5da5.exe
    "C:\Users\Admin\AppData\Local\Temp\a8c4b8096fd12078acf5f08230e561381fe8d0859a5949825ab411f6312f5da5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\system32\explorer.exe"
      2⤵
      • Modifies extensions of user files
      • 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 WriteProcessMemory
      PID:1572
      • C:\Windows\SysWOW64\explorer.exe
        "C:\Windows\system32\explorer.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2000
        • C:\Windows\system32\vssadmin.exe
          C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2040
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Modifies service
    • Suspicious use of AdjustPrivilegeToken
    PID:1712

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

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2
T1490

Replay Monitor

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Downloads

  • memory/1096-1-0x0000000000070000-0x0000000000089000-memory.dmp
    Filesize

    100KB

    Download
  • memory/1572-0-0x0000000000000000-mapping.dmp
    Download
  • memory/1572-3-0x00000000001B0000-0x00000000001C9000-memory.dmp
    Filesize

    100KB

    Download
  • memory/2000-2-0x0000000000000000-mapping.dmp
    Download
  • memory/2040-4-0x0000000000000000-mapping.dmp
    Download