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Overview

overview

10

Static

static

3

CoronaVirus.exe

windows10-1703-x64

10

CoronaVirus.exe

windows10-2004-x64

10

Resubmissions

30/06/2024, 01:19

240630-bpptys1fka 10

29/06/2024, 23:34

240629-3kgrbszama 10

Analysis

  • max time kernel
    77s
  • max time network
    78s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    29/06/2024, 23:34

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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
dharmadefense_evasionexecutionimpactpersistenceransomwarespywarestealer

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 [email protected] Write this ID in the title of your message 4A1B0087 In case of no answer in 24 hours write us to theese e-mails: [email protected] 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.

Signatures

  • Dharma

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

    ransomwaredharma
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (443) 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 3 TTPs 2 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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:600
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4848
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:5780
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:8676
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5708
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:5772
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:5904
        • 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:5840
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:5884
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:6044
          • C:\Windows\system32\werfault.exe
            werfault.exe /h /shared Global\73d679e21ae04251979968d85f511f03 /t 5888 /p 5884
            1⤵
              PID:6428

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-4A1B0087.[[email protected]].ncov
              Filesize

              2.7MB

              MD5

              1dae7b51e9ad21af0d1cef1146775567

              SHA1

              0e2ee9df6ede2c4dc9e54b41cf50353271177450

              SHA256

              5a6f92c8e3f8739fd3418ae45e5538f6fd8ebe16df27033ee515f86293b9bdba

              SHA512

              6f3e1d97fb0a78ff91e208d51909ec5479324ad076468c6a88e20520ead1e6d8ce94b608adeb5dc454211110e596ba8e8ac5982931ab4268218a06ebc9271a8c

              Download Submit

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

              13KB

              MD5

              9fd98ba068ec61c6e9c4e10be1dc47ab

              SHA1

              73f2daf68cdb26e8f118731fa04de5daa8ce1791

              SHA256

              8ed41a7576ad34eddb87c4d3fc02a69fd2095e9170b351af458d5f9d566f242e

              SHA512

              82a6427ed25cbc6fedfe156d6b72dafdecc8d15e4a3ac57e60e6b6dff0104daec601cbc8ea0ad5724085f17b8faab9ac9f9af487372bdef56a7b726c31aa6f8d

              Download Submit

            • memory/600-0-0x0000000000400000-0x000000000056F000-memory.dmp

              Filesize

              1.4MB

              Download

            • memory/600-1-0x000000000AD30000-0x000000000AD64000-memory.dmp

              Filesize

              208KB

              Download

            • memory/600-3-0x0000000000400000-0x000000000056F000-memory.dmp

              Filesize

              1.4MB

              Download

            • memory/600-21947-0x0000000000400000-0x000000000056F000-memory.dmp

              Filesize

              1.4MB

              Download

            • memory/600-21961-0x000000000AD30000-0x000000000AD64000-memory.dmp

              Filesize

              208KB

              Download