Overview

overview

10

Static

static

3

CoronaVirus.exe

windows10-1703-x64

10

Resubmissions

02-07-2024 18:11

240702-wsxn7avbph 10

02-07-2024 18:01

240702-wl4txsvarf 10

Analysis

  • max time kernel
    157s
  • max time network
    136s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    02-07-2024 18:01

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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 74847267 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 6 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
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • 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 8 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 52 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:4268
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:788
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:6708
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:36440
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:21720
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:21628
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:21580
        • 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:21508
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:21296
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:35456
          • C:\Windows\system32\NOTEPAD.EXE
            "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\FILES ENCRYPTED.txt
            1⤵
              PID:10256
            • C:\Windows\system32\taskmgr.exe
              "C:\Windows\system32\taskmgr.exe" /4
              1⤵
              • Drops startup file
              • Drops file in Windows directory
              • Checks SCSI registry key(s)
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              PID:10068
            • C:\Windows\system32\NOTEPAD.EXE
              "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\Desktop\FILES ENCRYPTED.txt
              1⤵
                PID:9748

              Network

              MITRE ATT&CK Matrix ATT&CK v13

              Initial Access

              Execution

              Windows Management Instrumentation

              1
              T1047

              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

              Direct Volume Access

              1
              T1006

              Credential Access

              Unsecured Credentials

              1
              T1552

              Credentials In Files

              1
              T1552.001

              Discovery

              System Information Discovery

              2
              T1082

              Query Registry

              1
              T1012

              Peripheral Device Discovery

              1
              T1120

              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\AppvIsvSubsystems64.dll.id-74847267.[[email protected]].ncov
                Filesize

                3.2MB

                MD5

                1b8b71f77f289f03f008a56806b73100

                SHA1

                8b9eab528b8214359f664c4301b77cbe9f0eae8f

                SHA256

                9e0bf73d9c4f032f0c5cb92a11ddc20feb189a2c641e1fe4d0454c69e9c23929

                SHA512

                b340738de78ba98b46f53aaf695c0a2ab595b0eb265ac3729a2d5c37d13ab532f9fe19a664c08f23abf14f1025992bcaa312a328026c00a4da3cc22a4893f86d

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

                13KB

                MD5

                c7dcc6fdd92b434b6611a093520fb6a4

                SHA1

                53357a7ec72dd60c659d2a2e94421d9f1747895e

                SHA256

                b7713cb9541f045de8d3d0e06c3a85b007208b265933ae6d608292638d7ab007

                SHA512

                1770190364d930cf47d698e0d3001cb5472a70921d586f099f41580f59f83e7007ae364a4da6f03c6254af2738f5f38c64d2c2516b0318e5d0c5ee7e902d006e

                Download Submit
              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CoronaVirus.exe
                Filesize

                1.0MB

                MD5

                055d1462f66a350d9886542d4d79bc2b

                SHA1

                f1086d2f667d807dbb1aa362a7a809ea119f2565

                SHA256

                dddf7894b2e6aafa1903384759d68455c3a4a8348a7e2da3bd272555eba9bec0

                SHA512

                2c5e570226252bdb2104c90d5b75f11493af8ed1be8cb0fd14e3f324311a82138753064731b80ce8e8b120b3fe7009b21a50e9f4583d534080e28ab84b83fee1

                Download Submit
              • C:\Users\Admin\Desktop\FILES ENCRYPTED.txt
                Filesize

                170B

                MD5

                21539971cae3b6278ce678b16b3f2643

                SHA1

                f4357280ca6838b0b62e610c6ffc24d1ab615e37

                SHA256

                b386715edcdb5fbb762f2308d588c5a67bfe65745105b87228596885e4715045

                SHA512

                43f07a7df1bf14f76f60424219f00c051f4097f222f3b453cd208449f30e4915745300ad89f45a738bd828c7691fe97c0a16fa58115057d4ccf0e1784b46a7db

                Download Submit
              • memory/4268-0-0x0000000000400000-0x000000000056F000-memory.dmp
                Filesize

                1.4MB

                Download
              • memory/4268-1-0x000000000AD30000-0x000000000AD64000-memory.dmp
                Filesize

                208KB

                Download
              • memory/4268-2-0x0000000000400000-0x000000000056F000-memory.dmp
                Filesize

                1.4MB

                Download
              • memory/4268-15485-0x0000000000400000-0x000000000056F000-memory.dmp
                Filesize

                1.4MB

                Download
              • memory/4268-21999-0x000000000AD30000-0x000000000AD64000-memory.dmp
                Filesize

                208KB

                Download