Overview

overview

10

Static

static

3

coronavirus.exe

windows7-x64

10

coronavirus.exe

windows10-2004-x64

10

Resubmissions

21-11-2024 23:51

241121-3wkx5azndw 10

21-11-2024 23:51

241121-3wc8aaznds 10

21-11-2024 18:44

241121-xdy45syqhq 10

Analysis

  • max time kernel
    1019s
  • max time network
    426s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-11-2024 23:51

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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:\Users\Admin\AppData\Roaming\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 764F313B 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 (522) files with added filename extension

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

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • 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⤵
    • Checks computer location settings
    • 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:4812
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2616
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:24772
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:31392
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:15496
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:15620
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:15748
        • 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:15644
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:15660
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:15776

          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

          Query Registry

          1
          T1012

          System Information Discovery

          2
          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-764F313B.[[email protected]].ncov
            Filesize

            2.7MB

            MD5

            593b26878c06c42ce697ffed88540773

            SHA1

            2b2d019a690bfe3d6ff1925745585f851d744aaf

            SHA256

            297ab0e4c11b0afab5a79401ceba08e6b6030727868f79526f0e7f9c65a3bd4a

            SHA512

            5be8378564519105b907770ffdaab5a8ca2fdfbb28bcded4764155d1955e246cddc89566951acd6a9dee7090bf17d343521c90d30e11c71c15d1729aecfb25b4

            Download Submit

          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
            Filesize

            13KB

            MD5

            f5ab5218c02fd3551992e8488c164c27

            SHA1

            f8a3be015ab2d444d0706d8584fe04639cfa91fe

            SHA256

            3d20c27c20e8f21f01dc673cf7470da59a809206a0dd0e8ea72fc99975cadba2

            SHA512

            62932dc43c234c8c40aca4e1a9883e6a86d7cc73a4f3796bb356364644e061600f0195cd64c99062a489e468bdac06885a74345e07ea8ce643a3565f75e3919b

            Download Submit

          • memory/4812-0-0x0000000000400000-0x000000000056F000-memory.dmp

            Filesize

            1.4MB

            Download

          • memory/4812-1-0x000000000ADC0000-0x000000000ADF4000-memory.dmp

            Filesize

            208KB

            Download

          • memory/4812-3-0x0000000000400000-0x000000000056F000-memory.dmp

            Filesize

            1.4MB

            Download

          • memory/4812-7415-0x0000000000400000-0x000000000056F000-memory.dmp

            Filesize

            1.4MB

            Download

          • memory/4812-18951-0x000000000ADC0000-0x000000000ADF4000-memory.dmp

            Filesize

            208KB

            Download