Analysis

  • max time kernel
    13s
  • max time network
    116s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    17-03-2021 08:23

General

  • Target

    b80103a60fa68e425a4fd200ca223915.exe

  • Size

    751KB

  • MD5

    b80103a60fa68e425a4fd200ca223915

  • SHA1

    635825a5b35ea82c0255ba2c2e887c27fadd76f2

  • SHA256

    94658982002db6acea22c68b7619f71154933effd6428a81a235aba6e2789328

  • SHA512

    089db4834228073e77dc4af4259905977df9b976f8e4837fccc5f77991fef93d62fd809c2e67b3680f94877ef54209f1693ed93fbd412a13e3de187d0586ed2e

Malware Config

Extracted

Path

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

Family

makop

Ransom Note
::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted and now have the "BKGHJ" 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.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 22 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 2 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 41 IoCs
  • Suspicious use of AdjustPrivilegeToken 56 IoCs
  • Suspicious use of WriteProcessMemory 61 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe
    "C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3920
    • C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe
      "C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2352
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout 1
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3924
        • C:\Windows\SysWOW64\timeout.exe
          timeout 1
          4⤵
          • Delays execution with timeout.exe
          PID:200
      • C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe
        "C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe"
        3⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1336
        • C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe
          "C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe" n1336
          4⤵
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:2640
          • C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe
            "C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe"
            5⤵
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3100
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c timeout 1
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:2440
              • C:\Windows\SysWOW64\timeout.exe
                timeout 1
                7⤵
                • Delays execution with timeout.exe
                PID:2576
            • C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe
              "C:\Users\Admin\AppData\Local\Temp\b80103a60fa68e425a4fd200ca223915.exe"
              6⤵
                PID:1400
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3100 -s 1300
                6⤵
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:3684
          • C:\Windows\system32\cmd.exe
            "C:\Windows\system32\cmd.exe"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:2056
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              5⤵
              • Interacts with shadow copies
              PID:1240
            • C:\Windows\system32\wbadmin.exe
              wbadmin delete catalog -quiet
              5⤵
              • Deletes backup catalog
              PID:1056
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic shadowcopy delete
              5⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:4120
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2352 -s 1360
          3⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1208
    • \??\c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s seclogon
      1⤵
      • Suspicious use of NtCreateUserProcessOtherParentProcess
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1020
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2388
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3520
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:276
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:3128

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1208-40-0x0000000004790000-0x0000000004791000-memory.dmp

        Filesize

        4KB

      • memory/1208-34-0x0000000004790000-0x0000000004791000-memory.dmp

        Filesize

        4KB

      • memory/1208-30-0x0000000004790000-0x0000000004791000-memory.dmp

        Filesize

        4KB

      • memory/1208-28-0x0000000004790000-0x0000000004791000-memory.dmp

        Filesize

        4KB

      • memory/1336-24-0x0000000000400000-0x000000000041E000-memory.dmp

        Filesize

        120KB

      • memory/1336-21-0x0000000000400000-0x000000000041E000-memory.dmp

        Filesize

        120KB

      • memory/2352-10-0x0000000010000000-0x0000000010020000-memory.dmp

        Filesize

        128KB

      • memory/2352-13-0x0000000073300000-0x00000000739EE000-memory.dmp

        Filesize

        6.9MB

      • memory/2352-23-0x0000000005640000-0x0000000005641000-memory.dmp

        Filesize

        4KB

      • memory/2640-27-0x0000000073300000-0x00000000739EE000-memory.dmp

        Filesize

        6.9MB

      • memory/2640-47-0x0000000004FC0000-0x0000000004FC1000-memory.dmp

        Filesize

        4KB

      • memory/3100-60-0x00000000056F0000-0x00000000056F1000-memory.dmp

        Filesize

        4KB

      • memory/3100-43-0x0000000073300000-0x00000000739EE000-memory.dmp

        Filesize

        6.9MB

      • memory/3684-55-0x0000000004790000-0x0000000004791000-memory.dmp

        Filesize

        4KB

      • memory/3920-2-0x0000000073300000-0x00000000739EE000-memory.dmp

        Filesize

        6.9MB

      • memory/3920-6-0x0000000005510000-0x0000000005511000-memory.dmp

        Filesize

        4KB

      • memory/3920-7-0x00000000054B0000-0x00000000054B1000-memory.dmp

        Filesize

        4KB

      • memory/3920-8-0x0000000005780000-0x0000000005781000-memory.dmp

        Filesize

        4KB

      • memory/3920-9-0x00000000054F0000-0x00000000054F1000-memory.dmp

        Filesize

        4KB

      • memory/3920-5-0x0000000005930000-0x0000000005931000-memory.dmp

        Filesize

        4KB

      • memory/3920-3-0x0000000000C00000-0x0000000000C01000-memory.dmp

        Filesize

        4KB

      • memory/3920-18-0x00000000054C0000-0x00000000054C1000-memory.dmp

        Filesize

        4KB