Analysis

  • max time kernel
    70s
  • max time network
    14s
  • platform
    windows7_x64
  • resource
    win7v200722
  • submitted
    11-09-2020 19:59

General

  • Target

    ns_payload_copy - Copy.ps1

  • Size

    890KB

  • MD5

    b0330030df02197bafb47e7f254122d4

  • SHA1

    a91fcee88deab9f1ddce34a90149fd7735708262

  • SHA256

    bae7e41ea40657e39cab880015818fdc0ed6c8958b77fc6d42d94b8c7a730c7e

  • SHA512

    949eeba7a28f076a95804b5ada2cd2f6001b5080fb4e040222ea368c8cf013f21009c89cc5ca893760c109f0713f45218602274d041157c0ee50228f98f498a6

Malware Config

Extracted

Path

C:\Program Files (x86)\Common Files\Adobe AIR\661D15-Readme.txt

Family

mailto_hamlampampom

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .661d15 -- 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. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- 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_661d15: mKTzyr5C45SekhUxa9z7pgSHmmP7wyYfnw0NmyC4NULBOIRmXe EwP4VDIHS0/06lbtjYomwPHFPne1L4fzxZ6gEuyHzF40oMCLoU XqIVHWYcV+FHr0AKOXI5if597flD1A5cA05QgY6ZhPYDQB3UMF 7z6Du1IjqrwMvwVSXDfH5toowCkFevlQC6M3/mcm30EsW4274g sO7N3FPhRIBIwcE0KUJwwHgF6YlGU7v4worycbpqlKOKE1ZAIX BM3DqIW3Zl/5eOATDnWWf3IAbq9309D+aRxxmEaQ==}

Extracted

Path

C:\ProgramData\Microsoft Help\661D15-Readme.txt

Family

mailto_hamlampampom

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .661d15 -- 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. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- 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_661d15: mKTzyr5C45SekhUxa9z7pgSHmmP7wyYfnw0NmyC4NULBOIRmXe EwP4VDIHS0/06lbtjYomwPHFPne1L4fzxZ6gEuyHzF40oMCLoU XqIVHWYcV+FHr0AKOXI5if597flD1A5cA05QgY6ZhPYDQB3UMF 7z6Du1IjqrwMvwVSXDfH5toowCkFevlQC6M3/mcm30EsW4274g sO7N3FPhRIBIwcE0KUJwwHgF6YlGU7v4worycbpqlKOKE1ZAIX BM3DqIW3Zl/5eOATDnWWf3IAbq9309D+aRxxmEaQ==}Hi! Your files are encrypted. All encrypted files for this computer has extension: .661d15 -- 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. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- 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_661d15: mKTzyr5C45SekhUxa9z7pgSHmmP7wyYfnw0NmyC4NULBOIRmXe EwP4VDIHS0/06lbtjYomwPHFPne1L4fzxZ6gEuyHzF40oMCLoU XqIVHWYcV+FHr0AKOXI5if597flD1A5cA05QgY6ZhPYDQB3UMF 7z6Du1IjqrwMvwVSXDfH5toowCkFevlQC6M3/mcm30EsW4274g sO7N3FPhRIBIwcE0KUJwwHgF6YlGU7v4worycbpqlKOKE1ZAIX BM3DqIW3Zl/5eOATDnWWf3IAbq9309D+aRxxmEaQ==}

Signatures

  • MailTo (Hamlampampom Variant)

    Ransomware family discovered in late 2019 with variants named based on contact emails.

  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Modifies service 2 TTPs 5 IoCs
  • Drops file in Program Files directory 7587 IoCs
  • Suspicious behavior: EnumeratesProcesses 10074 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File "C:\Users\Admin\AppData\Local\Temp\ns_payload_copy - Copy.ps1"
    1⤵
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1436
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\la512uoi\la512uoi.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESB8A5.tmp" "c:\Users\Admin\AppData\Local\Temp\la512uoi\CSCC50D9550122241F0A86468AC82A557B.TMP"
        3⤵
          PID:1564
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
        "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\fl5yhz1z\fl5yhz1z.cmdline"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1960
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
          C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESBA5A.tmp" "c:\Users\Admin\AppData\Local\Temp\fl5yhz1z\CSCB37ACD9F475A406B8F24736238D4C6D.TMP"
          3⤵
            PID:1940
        • C:\Windows\system32\notepad.exe
          C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\661D15-Readme.txt"
          2⤵
            PID:1480
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
          • Modifies service
          • Suspicious use of AdjustPrivilegeToken
          PID:6360

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\RESB8A5.tmp

        • C:\Users\Admin\AppData\Local\Temp\RESBA5A.tmp

        • C:\Users\Admin\AppData\Local\Temp\fl5yhz1z\fl5yhz1z.dll

        • C:\Users\Admin\AppData\Local\Temp\la512uoi\la512uoi.dll

        • C:\Users\Admin\Desktop\661D15-Readme.txt

        • \??\c:\Users\Admin\AppData\Local\Temp\fl5yhz1z\CSCB37ACD9F475A406B8F24736238D4C6D.TMP

        • \??\c:\Users\Admin\AppData\Local\Temp\fl5yhz1z\fl5yhz1z.0.cs

        • \??\c:\Users\Admin\AppData\Local\Temp\fl5yhz1z\fl5yhz1z.cmdline

        • \??\c:\Users\Admin\AppData\Local\Temp\la512uoi\CSCC50D9550122241F0A86468AC82A557B.TMP

        • \??\c:\Users\Admin\AppData\Local\Temp\la512uoi\la512uoi.0.cs

        • \??\c:\Users\Admin\AppData\Local\Temp\la512uoi\la512uoi.cmdline

        • memory/1436-25-0x00000000025C0000-0x00000000025E2000-memory.dmp

          Filesize

          136KB

        • memory/1436-27-0x00000000025C0000-0x00000000025E2000-memory.dmp

          Filesize

          136KB

        • memory/1436-22-0x000000001B880000-0x000000001B881000-memory.dmp

          Filesize

          4KB

        • memory/1436-21-0x00000000025A0000-0x00000000025A1000-memory.dmp

          Filesize

          4KB

        • memory/1436-30-0x00000000025C0000-0x00000000025E2000-memory.dmp

          Filesize

          136KB

        • memory/1436-5-0x000000001C3E0000-0x000000001C3E1000-memory.dmp

          Filesize

          4KB

        • memory/1436-29-0x00000000025C0000-0x00000000025E2000-memory.dmp

          Filesize

          136KB

        • memory/1436-4-0x00000000022D0000-0x00000000022D1000-memory.dmp

          Filesize

          4KB

        • memory/1436-23-0x00000000025C0000-0x00000000025E2000-memory.dmp

          Filesize

          136KB

        • memory/1436-2-0x000000001ADD0000-0x000000001ADD1000-memory.dmp

          Filesize

          4KB

        • memory/1436-1-0x0000000001E60000-0x0000000001E61000-memory.dmp

          Filesize

          4KB

        • memory/1436-13-0x0000000001D40000-0x0000000001D42000-memory.dmp

          Filesize

          8KB

        • memory/1436-3-0x00000000024D0000-0x00000000024D1000-memory.dmp

          Filesize

          4KB

        • memory/1436-24-0x00000000025C0000-0x00000000025E2000-memory.dmp

          Filesize

          136KB

        • memory/1436-28-0x00000000025C0000-0x00000000025E2000-memory.dmp

          Filesize

          136KB

        • memory/1436-26-0x00000000025C0000-0x00000000025E2000-memory.dmp

          Filesize

          136KB

        • memory/1436-0-0x000007FEF6980000-0x000007FEF736C000-memory.dmp

          Filesize

          9.9MB

        • memory/1480-31-0x0000000000000000-mapping.dmp

        • memory/1564-9-0x0000000000000000-mapping.dmp

        • memory/1624-6-0x0000000000000000-mapping.dmp

        • memory/1940-17-0x0000000000000000-mapping.dmp

        • memory/1960-14-0x0000000000000000-mapping.dmp