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Analysis

  • max time kernel
    147s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    27/04/2022, 09:30

General

  • Target

    1.exe

  • Size

    1.0MB

  • MD5

    342a196528cc22163fa6a9bd7640c221

  • SHA1

    d8e9e8908a9f3be4bbd8fe169d420dcb523e6b4c

  • SHA256

    94b9665b40a2b36d6ff46ffd083bbf1c6d6c08de9fe24eb6dfb0199bd17f84b4

  • SHA512

    f3b2363664153b3ddcb060edfa44263de7f68f0c4febccc13b8e690aa751ed8edf096a40a08ee33ffe04748b360e4240805c1623ef8987861a33fea042e006e4

Score
10/10

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\3374973704\readme-warning.txt

Family

makop

Ransom Note
::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted and now have the "noctua" extension. The file structure was not damaged, we did everything possible so that this could not happen. .2. Q: How to recover files? A: If you wish to decrypt your files you will need to pay in bitcoins. .3. Q: What about guarantees? A: Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will cooperate with us. Its not in our interests. To check the ability of returning files, you can send to us any 2 files with SIMPLE extensions(jpg,xls,doc, etc... not databases!) and low sizes(max 1 mb), we will decrypt them and send back to you. That is our guarantee. .4. Q: How to contact with you? A: You can write us to our mailbox: [email protected] or [email protected] .5. Q: How will the decryption process proceed after payment? A: After payment we will send to you our scanner-decoder program and detailed instructions for use. With this program you will be able to decrypt all your encrypted files. .6. Q: If I don�t want to pay bad people like you? A: If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause only we have the private key. In practice - time is much more valuable than money. :::BEWARE::: DON'T try to change encrypted files by yourself! If you will try to use any third party software for restoring your data or antivirus solutions - please make a backup for all encrypted files! Any changes in encrypted files may entail damage of the private key and, as result, the loss all data.

Signatures

  • Makop

    Ransomware family discovered by @VK_Intel in early 2020.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Loads dropped DLL 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1.exe
    "C:\Users\Admin\AppData\Local\Temp\1.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Users\Admin\AppData\Local\Temp\1.exe
      2⤵
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:956
      • C:\Users\Admin\AppData\Local\Temp\1.exe
        "C:\Users\Admin\AppData\Local\Temp\1.exe" n956
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1176
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1176 -s 392
          4⤵
          • Program crash
          PID:1372
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1980
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:528
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1700
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:240
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1740 -s 480
      2⤵
      • Program crash
      PID:2036
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1208
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1364
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:980
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:1736

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\134245471

        Filesize

        256.7MB

        MD5

        9ccad7b4b1f71bb08b4286bbdb5874d8

        SHA1

        c3fcb6aa1729ccd76fd1e150b0a34d81c2f1d017

        SHA256

        5c38c89ecae449d4689804ac0ebc06edc57bbacf362e7ba8fbfc2cda557cdbab

        SHA512

        50a6e9fd8d6cb137a939f708130e432aa4cbcf0217f7ada8c3a7e93d8cf8c150efaeae1d30419ef20ed6ca31df99b39c2e453b9e5de48fcf05461779be8f03a6

      • C:\Users\Admin\AppData\Local\Temp\134245471

        Filesize

        305.0MB

        MD5

        026ee8de15880586852638e4a81fb251

        SHA1

        527ee12c2cb7dbf7f3226c6d5d42b692613a0f96

        SHA256

        044a04c0e0198ddeb9a5a3e4a5d324ba8ec6aee772c86edaa4f5e0bdcd211528

        SHA512

        96b41ae9244836e4e227e7e080a8f2bd1e1bb0c2a5a41f7d10b38bca2bd89fceee493c2268c0783c1bd4b9308b770e1e5878827b1230d562e85852851ea9bc97

      • \Users\Admin\AppData\Local\Temp\nst2934.tmp\System.dll

        Filesize

        12KB

        MD5

        cff85c549d536f651d4fb8387f1976f2

        SHA1

        d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

        SHA256

        8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

        SHA512

        531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

      • \Users\Admin\AppData\Local\Temp\nsy55DF.tmp\System.dll

        Filesize

        12KB

        MD5

        cff85c549d536f651d4fb8387f1976f2

        SHA1

        d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

        SHA256

        8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

        SHA512

        531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

      • memory/956-56-0x0000000000401000-0x0000000000407600-memory.dmp

        Filesize

        25KB

      • memory/956-58-0x0000000000408000-0x0000000000409000-memory.dmp

        Filesize

        4KB

      • memory/1700-66-0x000007FEFC1F1000-0x000007FEFC1F3000-memory.dmp

        Filesize

        8KB

      • memory/1740-54-0x00000000761F1000-0x00000000761F3000-memory.dmp

        Filesize

        8KB