Overview

overview

10

Static

static

3

CoronaVirus.exe

windows11-21h2-x64

Analysis

  • max time kernel
    359s
  • max time network
    360s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21-03-2024 04:38

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Errors

Reason
Machine shutdown
Report Analysis Logs

General

  • Target

    CoronaVirus.exe

  • Size

    1.0MB

  • MD5

    055d1462f66a350d9886542d4d79bc2b

  • SHA1

    f1086d2f667d807dbb1aa362a7a809ea119f2565

  • SHA256

    dddf7894b2e6aafa1903384759d68455c3a4a8348a7e2da3bd272555eba9bec0

  • SHA512

    2c5e570226252bdb2104c90d5b75f11493af8ed1be8cb0fd14e3f324311a82138753064731b80ce8e8b120b3fe7009b21a50e9f4583d534080e28ab84b83fee1

  • SSDEEP

    24576:FRYz/ERA0eMuWfHvgPw/83JI8CorP9qY0:FE/yADMuYvgP93JIc2

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
All your files have been encrypted! All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail coronavirus@qq.com Write this ID in the title of your message 21AB046C In case of no answer in 24 hours write us to theese e-mails: coronavirus@qq.com You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. Free decryption as guarantee Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.
Emails

coronavirus@qq.com

Signatures

  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

    ransomwaredharma
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Renames multiple (538) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Drops startup file 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Modifies data under HKEY_USERS 15 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\CoronaVirus.exe
    "C:\Users\Admin\AppData\Local\Temp\CoronaVirus.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:720
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2396
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:16696
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:10228
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3184
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:5888
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:5656
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
            PID:27564
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:11744
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:43836
          • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
            "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
            1⤵
            • Modifies registry class
            • Suspicious use of SetWindowsHookEx
            PID:24536
          • C:\Windows\system32\BackgroundTransferHost.exe
            "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.13
            1⤵
            • Modifies registry class
            PID:31584
          • C:\Windows\system32\werfault.exe
            werfault.exe /h /shared Global\e28eefb56a764c389759fd04d5f065db /t 11620 /p 11744
            1⤵
              PID:12448
            • C:\Windows\system32\LogonUI.exe
              "LogonUI.exe" /flags:0x4 /state0:0xa399a855 /state1:0x41c64e6d
              1⤵
              • Modifies data under HKEY_USERS
              • Suspicious use of SetWindowsHookEx
              PID:29476

            Network

            MITRE ATT&CK Matrix ATT&CK v13

            Initial Access

            Execution

            Persistence

            Boot or Logon Autostart Execution

            1
            T1547

            Registry Run Keys / Startup Folder

            1
            T1547.001

            Privilege Escalation

            Boot or Logon Autostart Execution

            1
            T1547

            Registry Run Keys / Startup Folder

            1
            T1547.001

            Defense Evasion

            Indicator Removal

            2
            T1070

            File Deletion

            2
            T1070.004

            Modify Registry

            1
            T1112

            Credential Access

            Unsecured Credentials

            1
            T1552

            Credentials In Files

            1
            T1552.001

            Discovery

            System Information Discovery

            1
            T1082

            Lateral Movement

            Collection

            Data from Local System

            1
            T1005

            Exfiltration

            Command and Control

            Impact

            Inhibit System Recovery

            2
            T1490

            Resource Development

            Reconnaissance

            Replay Monitor

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            Downloads

            • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-21AB046C.[coronavirus@qq.com].ncov
              Filesize

              2.9MB

              MD5

              4151f98e1c351cdc4fae5de25d1fc27a

              SHA1

              f26ed83e1b45b60cd50fdcc1b563b9826276ae95

              SHA256

              997cc8d56fc6cabcf689ba7b73b250680bb6ef1b07aea4e46f917ddd3993c3ea

              SHA512

              40da24543db0af988fae50fe470d96c45306aff10d153f5174cd8ebd747d3e6003a34e1fa246aef5d0e9aaf4d4b612eb354aafa2c76713548836e2d587d72e69

              Download Submit
            • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
              Filesize

              13KB

              MD5

              84241a656722844d6994d7fa1465af96

              SHA1

              2c7c108c7a980ecbf194eda0213dccf19b284726

              SHA256

              5fe9da8692df7757df06ad6909b4afb04af919600484339bab927c8384f76d9d

              SHA512

              d46e6e5e2483910c6b1744772a627c4a22b4f344385137e657112ed983e74bdd38ba2527bf4eb72f7305467e1a260faedeabdfec615d4d75a1dea2e606a22d97

              Download Submit
            • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\BackgroundTransferApi\11e88a26-5a2d-4155-828a-489df20364b9.down_data
              Filesize

              555KB

              MD5

              5683c0028832cae4ef93ca39c8ac5029

              SHA1

              248755e4e1db552e0b6f8651b04ca6d1b31a86fb

              SHA256

              855abd360d8a8d6974eba92b70cbd09ce519bc8773439993f9ab37cb6847309e

              SHA512

              aba434bd29be191c823b02ea9b639beb10647bbe7759bbffdaa790dfb1ec2c58d74c525ef11aacda209e4effe322d1d3a07b115446c8914b07a3bce4d8a0e2c3

              Download Submit
            • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat
              Filesize

              10KB

              MD5

              eebfb84605e05222e3ad98f4b9f62db2

              SHA1

              36ddd440df5b2776281ad245a6a57e7a183c09a0

              SHA256

              4a9b70f7113d5c252937ad9bbfa110031124ffe3643648db3f944111b61bd559

              SHA512

              90e6f46d36c30783af4032f72beb58eb157849a8197e39945542da8a0c1313cb87e91f18a732f5718ec6a676fcd790458419bcc22c608824416fa6df14bf5ba6

              Download Submit
            • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SettingsCache.txt
              Filesize

              846KB

              MD5

              766f5efd9efca73b6dfd0fb3d648639f

              SHA1

              71928a29c3affb9715d92542ef4cf3472e7931fe

              SHA256

              9111e9a5093f97e15510bf3d3dc36fd4a736981215f79540454ce86893993fdc

              SHA512

              1d4bb423d9cc9037f6974a389ff304e5b9fbd4bfd013a09d4ceeff3fd2a87ad81fe84b2ee880023984978391daf11540f353d391f35a4236b241ccced13a3434

              Download Submit
            • memory/720-0-0x0000000000400000-0x000000000056F000-memory.dmp
              Filesize

              1.4MB

              Download
            • memory/720-1-0x000000000A6A0000-0x000000000A6D4000-memory.dmp
              Filesize

              208KB

              Download
            • memory/720-2-0x0000000000400000-0x000000000056F000-memory.dmp
              Filesize

              1.4MB

              Download
            • memory/720-15973-0x0000000000400000-0x000000000056F000-memory.dmp
              Filesize

              1.4MB

              Download
            • memory/720-23580-0x000000000A6A0000-0x000000000A6D4000-memory.dmp
              Filesize

              208KB

              Download