Analysis

  • max time kernel
    139s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    26/07/2021, 12:57

General

  • Target
    1e278de6b60a036e05197baa5583360c3acdde3aeeb36106baabe827871f0270.sample.exe
  • Size 81KB
  • Sample210726-bc1pdrdmpj
  • SHA256 1e278de6b60a036e05197baa5583360c3acdde3aeeb36106baabe827871f0270
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • C:\Documents and Settings\# HELP_DECRYPT_YOUR_FILES #.TXT

  • cryptomix

Ransom Note
  • _---CryptoMix---_ NOT YOUR LANGUAGE? USE https://translate.google.com What happened to your files ? All of your files protected by a strong encryption with RSA-2048. More information about the encryption keys using RSA-2048 can be found here: https://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA-2048 KEY, both public and private. !!! ALL YOUR FILES were encrypted with the public key, which has been transferred to your computer via the Internet. !!! Decrypting of your files is only possible with the help of the private key and decrypt program , which is on our Secret Server What do I do ? So, there are two ways you can choose: wait for a miracle and get your price doubled, or start send email now for more specific instructions! , and restore your data easy way. If You have really valuable data, you better not waste your time, because there is no other way to get your files, except make a payment. For more specific instructions: Contact us by email only, send us an email along with your ID number and wait for further instructions. Our specialist will contact you within 24 hours. For you to be sure, that we can decrypt your files - you can send us a single encrypted file and we will send you back it in a decrypted form. This will be your guarantee. Please do not waste your time! You have 72 hours only! After that The Main Server will double your price! So right now You have a chance to buy your individual private SoftWare with a low price! E-MAIL1: [email protected] E-MAIL2: [email protected]

Extracted

Path
  • C:\Users\Admin\Documents\# HELP_DECRYPT_YOUR_FILES #.TXT

  • cryptomix

Ransom Note
  • _---CryptoMix---_ NOT YOUR LANGUAGE? USE https://translate.google.com What happened to your files ? All of your files protected by a strong encryption with RSA-2048. More information about the encryption keys using RSA-2048 can be found here: https://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA-2048 KEY, both public and private. !!! ALL YOUR FILES were encrypted with the public key, which has been transferred to your computer via the Internet. !!! Decrypting of your files is only possible with the help of the private key and decrypt program , which is on our Secret Server What do I do ? So, there are two ways you can choose: wait for a miracle and get your price doubled, or start send email now for more specific instructions! , and restore your data easy way. If You have really valuable data, you better not waste your time, because there is no other way to get your files, except make a payment. For more specific instructions: Contact us by email only, send us an email along with your ID number and wait for further instructions. Our specialist will contact you within 24 hours. For you to be sure, that we can decrypt your files - you can send us a single encrypted file and we will send you back it in a decrypted form. This will be your guarantee. Please do not waste your time! You have 72 hours only! After that The Main Server will double your price! So right now You have a chance to buy your individual private SoftWare with a low price! E-MAIL1: [email protected] E-MAIL2: [email protected] YOUR_ID: 1c9b74ea5153fee0

Signatures

  • CryptoMix

    Ransomware first seen in 2016 which has returned with new variants in 2019.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Interacts with shadow copies 2 TTPs 27 IoCs

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

  • Runs net.exe
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1e278de6b60a036e05197baa5583360c3acdde3aeeb36106baabe827871f0270.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\1e278de6b60a036e05197baa5583360c3acdde3aeeb36106baabe827871f0270.sample.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Suspicious use of WriteProcessMemory
    PID:1652
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1820
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin.exe Delete Shadows /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:652
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C wmic shadowcopy delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:300
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1736
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=Z: /All /Quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1744
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin Delete Shadows /For=Z: /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:940
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=Y: /All /Quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:344
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin Delete Shadows /For=Y: /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:1636
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=X: /All /Quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1604
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin Delete Shadows /For=X: /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:616
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=W: /All /Quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin Delete Shadows /For=W: /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:668
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=V: /All /Quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1708
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin Delete Shadows /For=V: /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:1488
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=U: /All /Quiet
      2⤵
        PID:524
        • C:\Windows\SysWOW64\vssadmin.exe
          vssadmin Delete Shadows /For=U: /All /Quiet
          3⤵
          • Interacts with shadow copies
          PID:296
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=T: /All /Quiet
        2⤵
          PID:1364
          • C:\Windows\SysWOW64\vssadmin.exe
            vssadmin Delete Shadows /For=T: /All /Quiet
            3⤵
            • Interacts with shadow copies
            PID:780
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=S: /All /Quiet
          2⤵
            PID:944
            • C:\Windows\SysWOW64\vssadmin.exe
              vssadmin Delete Shadows /For=S: /All /Quiet
              3⤵
              • Interacts with shadow copies
              PID:924
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=R: /All /Quiet
            2⤵
              PID:1556
              • C:\Windows\SysWOW64\vssadmin.exe
                vssadmin Delete Shadows /For=R: /All /Quiet
                3⤵
                • Interacts with shadow copies
                PID:2136
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=Q: /All /Quiet
              2⤵
                PID:1172
                • C:\Windows\SysWOW64\vssadmin.exe
                  vssadmin Delete Shadows /For=Q: /All /Quiet
                  3⤵
                  • Interacts with shadow copies
                  PID:2212
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=P: /All /Quiet
                2⤵
                  PID:2064
                  • C:\Windows\SysWOW64\vssadmin.exe
                    vssadmin Delete Shadows /For=P: /All /Quiet
                    3⤵
                    • Interacts with shadow copies
                    PID:2312
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=O: /All /Quiet
                  2⤵
                    PID:2152
                    • C:\Windows\SysWOW64\vssadmin.exe
                      vssadmin Delete Shadows /For=O: /All /Quiet
                      3⤵
                      • Interacts with shadow copies
                      PID:2572
                  • C:\Windows\SysWOW64\cmd.exe
                    "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=N: /All /Quiet
                    2⤵
                      PID:2228
                      • C:\Windows\SysWOW64\vssadmin.exe
                        vssadmin Delete Shadows /For=N: /All /Quiet
                        3⤵
                        • Interacts with shadow copies
                        PID:2536
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=M: /All /Quiet
                      2⤵
                        PID:2296
                        • C:\Windows\SysWOW64\vssadmin.exe
                          vssadmin Delete Shadows /For=M: /All /Quiet
                          3⤵
                          • Interacts with shadow copies
                          PID:2544
                      • C:\Windows\SysWOW64\cmd.exe
                        "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=L: /All /Quiet
                        2⤵
                          PID:2360
                          • C:\Windows\SysWOW64\vssadmin.exe
                            vssadmin Delete Shadows /For=L: /All /Quiet
                            3⤵
                            • Interacts with shadow copies
                            PID:2720
                        • C:\Windows\SysWOW64\cmd.exe
                          "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=K: /All /Quiet
                          2⤵
                            PID:2560
                            • C:\Windows\SysWOW64\vssadmin.exe
                              vssadmin Delete Shadows /For=K: /All /Quiet
                              3⤵
                              • Interacts with shadow copies
                              PID:2884
                          • C:\Windows\SysWOW64\cmd.exe
                            "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=J: /All /Quiet
                            2⤵
                              PID:2604
                              • C:\Windows\SysWOW64\vssadmin.exe
                                vssadmin Delete Shadows /For=J: /All /Quiet
                                3⤵
                                • Interacts with shadow copies
                                PID:2956
                            • C:\Windows\SysWOW64\cmd.exe
                              "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=I: /All /Quiet
                              2⤵
                                PID:2636
                                • C:\Windows\SysWOW64\vssadmin.exe
                                  vssadmin Delete Shadows /For=I: /All /Quiet
                                  3⤵
                                  • Interacts with shadow copies
                                  PID:2900
                              • C:\Windows\SysWOW64\cmd.exe
                                "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=H: /All /Quiet
                                2⤵
                                  PID:2668
                                  • C:\Windows\SysWOW64\vssadmin.exe
                                    vssadmin Delete Shadows /For=H: /All /Quiet
                                    3⤵
                                    • Interacts with shadow copies
                                    PID:2936
                                • C:\Windows\SysWOW64\cmd.exe
                                  "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=G: /All /Quiet
                                  2⤵
                                    PID:2704
                                    • C:\Windows\SysWOW64\vssadmin.exe
                                      vssadmin Delete Shadows /For=G: /All /Quiet
                                      3⤵
                                      • Interacts with shadow copies
                                      PID:2424
                                  • C:\Windows\SysWOW64\cmd.exe
                                    "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=F: /All /Quiet
                                    2⤵
                                      PID:2756
                                      • C:\Windows\SysWOW64\vssadmin.exe
                                        vssadmin Delete Shadows /For=F: /All /Quiet
                                        3⤵
                                        • Interacts with shadow copies
                                        PID:2964
                                    • C:\Windows\SysWOW64\cmd.exe
                                      "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=E: /All /Quiet
                                      2⤵
                                        PID:2784
                                        • C:\Windows\SysWOW64\vssadmin.exe
                                          vssadmin Delete Shadows /For=E: /All /Quiet
                                          3⤵
                                          • Interacts with shadow copies
                                          PID:2380
                                      • C:\Windows\SysWOW64\cmd.exe
                                        "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=C: /All /Quiet
                                        2⤵
                                          PID:2832
                                          • C:\Windows\SysWOW64\vssadmin.exe
                                            vssadmin Delete Shadows /For=C: /All /Quiet
                                            3⤵
                                            • Interacts with shadow copies
                                            PID:2236
                                        • C:\Windows\SysWOW64\cmd.exe
                                          "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=D: /All /Quiet
                                          2⤵
                                            PID:2812
                                            • C:\Windows\SysWOW64\vssadmin.exe
                                              vssadmin Delete Shadows /For=D: /All /Quiet
                                              3⤵
                                              • Interacts with shadow copies
                                              PID:2096
                                          • C:\Windows\SysWOW64\cmd.exe
                                            "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=B: /All /Quiet
                                            2⤵
                                              PID:2928
                                              • C:\Windows\SysWOW64\vssadmin.exe
                                                vssadmin Delete Shadows /For=B: /All /Quiet
                                                3⤵
                                                • Interacts with shadow copies
                                                PID:2208
                                            • C:\Windows\SysWOW64\cmd.exe
                                              "C:\Windows\System32\cmd.exe" /C vssadmin Delete Shadows /For=A: /All /Quiet
                                              2⤵
                                                PID:2340
                                                • C:\Windows\SysWOW64\vssadmin.exe
                                                  vssadmin Delete Shadows /For=A: /All /Quiet
                                                  3⤵
                                                  • Interacts with shadow copies
                                                  PID:2012
                                              • C:\Windows\SysWOW64\cmd.exe
                                                "C:\Windows\System32\cmd.exe" /C net stop vss
                                                2⤵
                                                  PID:2368
                                                  • C:\Windows\SysWOW64\net.exe
                                                    net stop vss
                                                    3⤵
                                                      PID:1684
                                                      • C:\Windows\SysWOW64\net1.exe
                                                        C:\Windows\system32\net1 stop vss
                                                        4⤵
                                                          PID:2244
                                                    • C:\Windows\SysWOW64\cmd.exe
                                                      "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} recoveryenabled No
                                                      2⤵
                                                        PID:2476
                                                      • C:\Windows\SysWOW64\cmd.exe
                                                        "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
                                                        2⤵
                                                          PID:1540
                                                        • C:\Windows\SysWOW64\cmd.exe
                                                          "C:\Windows\System32\cmd.exe" bcdedit /set {default} recoveryenabled No
                                                          2⤵
                                                            PID:568
                                                          • C:\Windows\SysWOW64\cmd.exe
                                                            "C:\Windows\System32\cmd.exe" bcdedit /set {default} bootstatuspolicy ignoreallfailures
                                                            2⤵
                                                              PID:2348
                                                            • C:\Windows\SysWOW64\cmd.exe
                                                              "C:\Windows\System32\cmd.exe" /C bcdedit /set bootstatuspolicy ignoreallfailures
                                                              2⤵
                                                                PID:2332
                                                              • C:\Windows\SysWOW64\cmd.exe
                                                                "C:\Windows\System32\cmd.exe" bcdedit /set bootstatuspolicy ignoreallfailures
                                                                2⤵
                                                                  PID:2240
                                                                • C:\Windows\SysWOW64\cmd.exe
                                                                  "C:\Windows\System32\cmd.exe" bcdedit /set recoveryenabled NO
                                                                  2⤵
                                                                    PID:2068
                                                                  • C:\Windows\SysWOW64\cmd.exe
                                                                    "C:\Windows\System32\cmd.exe" /C bcdedit /set recoveryenabled NO
                                                                    2⤵
                                                                      PID:1768
                                                                    • C:\Windows\SysWOW64\cmd.exe
                                                                      "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
                                                                      2⤵
                                                                        PID:2696
                                                                      • C:\Windows\SysWOW64\cmd.exe
                                                                        "C:\Windows\System32\cmd.exe" wbadmin delete catalog -quiet
                                                                        2⤵
                                                                          PID:368
                                                                        • C:\Windows\SysWOW64\NOTEPAD.EXE
                                                                          "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Documents\# HELP_DECRYPT_YOUR_FILES #.TXT
                                                                          2⤵
                                                                            PID:764
                                                                        • C:\Windows\system32\vssvc.exe
                                                                          C:\Windows\system32\vssvc.exe
                                                                          1⤵
                                                                          • Suspicious use of AdjustPrivilegeToken
                                                                          PID:640
                                                                        • C:\Windows\system32\vssvc.exe
                                                                          C:\Windows\system32\vssvc.exe
                                                                          1⤵
                                                                          • Suspicious use of AdjustPrivilegeToken
                                                                          PID:2764

                                                                        Network

                                                                              MITRE ATT&CK Enterprise v6

                                                                              Replay Monitor

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                                                                              Downloads

                                                                              memory/1652-60-0x0000000000080000-0x000000000008C000-memory.dmp

                                                                              memory/1652-61-0x0000000076641000-0x0000000076643000-memory.dmp