Overview

overview

10

Static

static

10

explorer.exe

windows7_x64

1

explorer.exe

windows10_x64

10

Analysis

  • max time kernel
    119s
  • max time network
    115s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27-04-2021 11:18

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General

  • Target

    explorer.exe

  • Size

    42KB

  • MD5

    4d31393711d4d60b52a1d311c085d9f7

  • SHA1

    38fd436e44839551d51f8a0ea19002f12f7f483e

  • SHA256

    237c08c22ad30ccee7c23dde2bf9977157ab6317385cbf848439701baa81bdbe

  • SHA512

    c0df459809d0cc1bd82ef527a5ba667daa29c3c6f8cc905ecaa4eda35ec6cdac9198aa34e9b18c3fc2a329213dc1a720111a96248ce2e7185d96755210b5fad0

Score
10/10
makoppersistenceransomwarespywarestealer

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 "makop" 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: ustedesfil@tuta.io .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.
Emails

ustedesfil@tuta.io

Signatures

  • Makop

    Ransomware family discovered by @VK_Intel in early 2020.

    ransomwaremakop
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Modifies Installed Components in the registry 2 TTPs
    persistence
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 16 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Modifies registry class 31 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 44 IoCs
  • Suspicious use of SendNotifyMessage 23 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\explorer.exe
    "C:\Users\Admin\AppData\Local\Temp\explorer.exe"
    1⤵
    • Drops file in Program Files directory
    • Modifies registry class
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4024
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3860
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1216
      • C:\Windows\system32\wbadmin.exe
        wbadmin delete catalog -quiet
        3⤵
        • Deletes backup catalog
        PID:1676
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3948
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\readme-warning.txt
      2⤵
        PID:788
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3240
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2284
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:2380
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:2676
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 3024 -s 7480
        1⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3792
      • C:\Windows\explorer.exe
        explorer.exe
        1⤵
        • Enumerates connected drives
        • Checks SCSI registry key(s)
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:272
      • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
        "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
        1⤵
        • Enumerates system info in registry
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:3636
      • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
        "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
        1⤵
        • Suspicious use of SetWindowsHookEx
        PID:1832

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      Command-Line Interface

      1
      T1059

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Privilege Escalation

      Defense Evasion

      File Deletion

      3
      T1107

      Modify Registry

      2
      T1112

      Install Root Certificate

      1
      T1130

      Credential Access

      Credentials in Files

      1
      T1081

      Discovery

      Query Registry

      3
      T1012

      Peripheral Device Discovery

      2
      T1120

      System Information Discovery

      4
      T1082

      Lateral Movement

      Collection

      Data from Local System

      1
      T1005

      Exfiltration

      Command and Control

      Web Service

      1
      T1102

      Impact

      Inhibit System Recovery

      3
      T1490

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\cversions.3.db
        MD5

        305f147746a7fe92b2cb0d468bd5032a

        SHA1

        aeeec823bf1357e7f2ffa641a6165510037490bd

        SHA256

        2233221c472ac454b413a06f73fbcf3987ad9d08b4626899e2f1cad04c28df71

        SHA512

        5b7754557f0e0786cc2354acbbf64295cea11ab90156834aa8fe9bdf96f0d7a273bd373ed7d9b78b0ff203fe6619c91c4a271eb98c8ac8753ed8cd9d2d255d4e

        Download Submit
      • C:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\{3DA71D5A-20CC-432F-A115-DFE92379E91F}.3.ver0x000000000000001d.db
        MD5

        ea8d23ede2221da319676ce2b1a404f3

        SHA1

        d4eb582ae8422406d49c5b7d6aee8d677b81c2be

        SHA256

        9afd6f921ebbe4d062c4b72447c11587d4800ed454650a1cbcda4769b92099dc

        SHA512

        8f49e9358b2cea61d4e8beeba393bfa736151822419f57b08e275dc9e3bc226536f8204ca3c8801f337ebef638e5d05aa9495bea25b99358c2e7f793af7ecb45

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      • C:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\{3DA71D5A-20CC-432F-A115-DFE92379E91F}.3.ver0x000000000000001e.db
        MD5

        4e3baae477fcbaab59c4389f7cdf08fd

        SHA1

        6fca88b49a5b82d318c4ae43eb24b60c98e658f1

        SHA256

        b805a2c3bb1ef81fe5542566adf1d9946ad75475ceb3d75d6a873ce412aa5ec3

        SHA512

        60daabc3630189cf73c5638f3b27eb1b5c16fe6e3ff313a96ff87b4007a3b8c2dc998059d2038e5bb966705d756ccf6c0e39b1c056c69355b81a37bbc9081ca0

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      • C:\Users\Admin\AppData\Local\Temp\WERB941.tmp.appcompat.txt
        MD5

        c74f0d75a6cd9292d11cf4f5f03dd458

        SHA1

        a31399ef88be854660c8158258351f8b02a98277

        SHA256

        1470544e9f1d479e816c1642a33a9498eb796e697a36934ec6e8404c4e9e8bf4

        SHA512

        304fb9ed6003d77df24451bbb3d946695d934884b9bce0efd778a456c2f2301f079635cca64b678a1dcf18c2a0d11cf9704113955fc671fd49850c7a4a562c6e

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      • C:\Users\Admin\Desktop\readme-warning.txt
        MD5

        87cee8704246a77a24785cbb79710c92

        SHA1

        00764ca7abc9b2b4055e585459a1c3a6dd71330e

        SHA256

        6f6180093459cf403c76e6be19161cdbb8eca2efd23db67a66ee2fe34366251d

        SHA512

        d2fe396c7a0a309d4a7207dae52f2d58ccd28425da757db9477a44014ccd16cbc26c32352b98d5825bb310d1eebc1034041860d55c052f4a9e170260a243e183

        Download Submit
      • C:\Users\All Users\Microsoft\Windows\WER\Temp\WERB6FC.tmp.WERInternalMetadata.xml
        MD5

        4cd7cfbf96170b3503b499101d7e1923

        SHA1

        d6b6338dfe82feb924e1ce6978c24d9d584e5f50

        SHA256

        8d5a59f29bbb78a7fce43c609850974b5e29daa1a648e7a0c0def65022d71529

        SHA512

        ecb4f52b1fc95e4f93151ffe06cdd159e65d2205e1539c2a9eb8383fac8e6b6dfd0c3f3bdc8ae44bd25bb1b5f430537dfd0ab5f8096ce39300c34091e1d175c2

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      • memory/272-120-0x0000000001630000-0x0000000001631000-memory.dmp
        Filesize

        4KB

        Download
      • memory/788-122-0x0000000000000000-mapping.dmp
        Download
      • memory/1216-115-0x0000000000000000-mapping.dmp
        Download
      • memory/1676-116-0x0000000000000000-mapping.dmp
        Download
      • memory/3860-114-0x0000000000000000-mapping.dmp
        Download
      • memory/3948-117-0x0000000000000000-mapping.dmp
        Download