Overview

overview

10

Static

static

3

CoronaVirus.exe

windows11-21h2-x64

10

CoronaVirus.exe

windows7-x64

10

Analysis

  • max time kernel
    105s
  • max time network
    96s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    08-12-2024 01:52

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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
dharmacredential_accessdefense_evasiondiscoveryexecutionimpactpersistenceransomwarespywarestealer

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 5A877A2C 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
  • Dharma family
    dharma
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (563) files with added filename extension

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

    ransomware
  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

    credential_accessstealer
  • Drops startup file 5 IoCs
  • Reads user/profile data of web browsers 3 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 4 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

    discovery
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • 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
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2756
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1136
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:22600
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:22796
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:25388
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:180
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:25656
        • 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:25688
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:25772
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:22892
          • C:\Windows\system32\werfault.exe
            werfault.exe /h /shared Global\16dff88bba0744a7a4c936305d4a2a4e /t 25776 /p 25772
            1⤵
              PID:26152
            • C:\Windows\system32\werfault.exe
              werfault.exe /h /shared Global\e8c6f5c9ee6d4ec68a47d53d3feaffc1 /t 25692 /p 25688
              1⤵
                PID:26284
              • C:\Windows\System32\oobe\UserOOBEBroker.exe
                C:\Windows\System32\oobe\UserOOBEBroker.exe -Embedding
                1⤵
                • Drops file in Windows directory
                PID:28036
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
                1⤵
                  PID:28108

                Network

                MITRE ATT&CK Enterprise v15

                Reconnaissance

                Resource Development

                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

                Direct Volume Access

                1
                T1006

                Indicator Removal

                2
                T1070

                File Deletion

                2
                T1070.004

                Modify Registry

                1
                T1112

                Credential Access

                Credentials from Password Stores

                2
                T1555

                Credentials from Web Browsers

                1
                T1555.003

                Windows Credential Manager

                1
                T1555.004

                Unsecured Credentials

                1
                T1552

                Credentials In Files

                1
                T1552.001

                Discovery

                Browser Information Discovery

                1
                T1217

                System Information Discovery

                1
                T1082

                System Location Discovery

                1
                T1614

                System Language Discovery

                1
                T1614.001

                Lateral Movement

                Collection

                Data from Local System

                1
                T1005

                Command and Control

                Exfiltration

                Impact

                Inhibit System Recovery

                2
                T1490

                Replay Monitor

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                Downloads

                • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-5A877A2C.[[email protected]].ncov
                  Filesize

                  2.7MB

                  MD5

                  52fe6d4c22ad1ba938388aa2400a96e5

                  SHA1

                  551e0e378fcf9676b5964754f91ba759c660df35

                  SHA256

                  7af98abaa8d850ba6f94a878572999eb1984abdfa4092ca976ef5896fa99ac1f

                  SHA512

                  57c2740fcf03c7ce0566f8639f6d0f4e3cc601442055aa683a7acf55651a756b30e1a52c38d29800cf87dab32b0cbf925fe7180dc43f40c75cc0af9d5aee83ef

                  Download Submit

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

                  13KB

                  MD5

                  7baa9e1ef4b85c10ff2e1ff5130c766c

                  SHA1

                  d5a7343327d3703f1e477330a5b7e2bbed2a8cf6

                  SHA256

                  2f6d95c9a1cea09db77ba20ec2000cf5cf10073b93d4e45a05d43fc5f9676e74

                  SHA512

                  ff48bde1603408e2b457c3d83d3f9a49c27fecdce6f908af619e691ce829dd3e89f48f50423e4b05024210462ee2c1d36833a78cee02fdd6f7dd9edcc3ae8303

                  Download Submit

                • memory/2756-0-0x0000000000400000-0x000000000056F000-memory.dmp

                  Filesize

                  1.4MB

                  Download

                • memory/2756-1-0x000000000A6A0000-0x000000000A6D4000-memory.dmp

                  Filesize

                  208KB

                  Download

                • memory/2756-3-0x0000000000400000-0x000000000056F000-memory.dmp

                  Filesize

                  1.4MB

                  Download

                • memory/2756-4889-0x0000000000400000-0x000000000056F000-memory.dmp

                  Filesize

                  1.4MB

                  Download

                • memory/2756-24744-0x000000000A6A0000-0x000000000A6D4000-memory.dmp

                  Filesize

                  208KB

                  Download