Overview

overview

10

Static

static

3

Ransomware...us.exe

windows7-x64

10

Ransomware...us.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-01-2024 20:06

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General

  • Target

    Ransomware.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:\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 coronavirus@qq.com Write this ID in the title of your message AC32CB53 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 (504) 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.

  • 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
  • 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\Ransomware.CoronaVirus.exe
    "C:\Users\Admin\AppData\Local\Temp\Ransomware.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
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4308
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5016
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:18424
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:5168
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:8960
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:7392
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:19172
        • 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:11940
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:304
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:5852

          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

          Query Registry

          1
          T1012

          System Information Discovery

          2
          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

          Loading Replay Monitor...

          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-AC32CB53.[coronavirus@qq.com].ncov
            Filesize

            118KB

            MD5

            ee041e4de8c972ef5129e18501ae6b39

            SHA1

            e6afadee0dee94f5d7a608a269341706a65269e9

            SHA256

            53ccb0706408344ee3f5a79dfbde89f017d0f6195ac4d8451368c1c64f3e209c

            SHA512

            bcaed03e6207782f5b2b79ca4803897d39117c6cf0444aa1f21af3bcc00e1702499bbd7dff4db82695359592388ef373b30a9cbce8416990cd6706f145e0139e

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

            13KB

            MD5

            2a171bd2ac3e532c89162836fd4bc06b

            SHA1

            a9c67fff53ccade0338f4910d2cffeed780fefd1

            SHA256

            4595573de953389760b629851dd85d8b34a3bb3a953a23146c6ed3b6737d1a32

            SHA512

            c19a43f03edcd6b5d3fa748b5e30c64854b125ec80c56113bf00fc75200cace26018d0b77de667c154a602dcc11c4cec6eca2959d15ede86d86e6e97cd5db723

            Download Submit
          • memory/4308-0-0x0000000000400000-0x000000000056F000-memory.dmp
            Filesize

            1.4MB

            Download
          • memory/4308-1-0x000000000ADC0000-0x000000000ADF4000-memory.dmp
            Filesize

            208KB

            Download
          • memory/4308-2-0x0000000000400000-0x000000000056F000-memory.dmp
            Filesize

            1.4MB

            Download
          • memory/4308-5501-0x0000000000400000-0x000000000056F000-memory.dmp
            Filesize

            1.4MB

            Download
          • memory/4308-23776-0x000000000ADC0000-0x000000000ADF4000-memory.dmp
            Filesize

            208KB

            Download