Overview

overview

10

Static

static

3

Ransomware...us.exe

windows7-x64

10

Ransomware...us.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    95s
  • max time network
    55s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-06-2024 00:44

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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
dharmadefense_evasionexecutionimpactpersistenceransomwarespywarestealer

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 70956676 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 (629) 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:4196
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3088
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:25880
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:6240
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:16272
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:16472
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:16600
        • 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:16392
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:16404
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4436,i,7012731823941922179,12386606396608877869,262144 --variations-seed-version --mojo-platform-channel-handle=4376 /prefetch:8
            1⤵
              PID:4784
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe"
              1⤵
                PID:23504
              • C:\Windows\system32\vssvc.exe
                C:\Windows\system32\vssvc.exe
                1⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:13060

              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

              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

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              Downloads

              • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-70956676.[[email protected]].ncov
                Filesize

                2.9MB

                MD5

                53fe2a9dfad9e4c8136abbbd228c6939

                SHA1

                945994f279cdf4b74b52b9e6239d54b948c468ca

                SHA256

                2613e1e01a35aeeed799ad52fb7f7746c81fb40e214498d4238bc737ce32c00a

                SHA512

                3070d27fec549770cf335edac439c49dfaa58dfed633c211315c93f0a9b5c06f02eecb74977a9bd92802a1dd59dfe2b61e8a28ac16796fbf39fcb96103c3fe6a

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

                13KB

                MD5

                f9d5f29c46b9f79746f9199bc7c63356

                SHA1

                a4bf82f7714d73e690b490258c04bae474319b4d

                SHA256

                820caf4cc24eaf66c5922ef2393c63e15755f56ce6f2a8826c28d7ea1b4f3b9a

                SHA512

                54076244ba2f363b34fb85ffd9e13352b59276f571a93839f6d7514ee8c246275bda536a01e2c70c8a82c0c5d05681e06ea975af546fdb1cecf8ab969935de55

                Download Submit
              • memory/4196-0-0x0000000000400000-0x000000000056F000-memory.dmp
                Filesize

                1.4MB

                Download
              • memory/4196-1-0x000000000ADC0000-0x000000000ADF4000-memory.dmp
                Filesize

                208KB

                Download
              • memory/4196-2-0x0000000000400000-0x000000000056F000-memory.dmp
                Filesize

                1.4MB

                Download
              • memory/4196-24707-0x0000000000400000-0x000000000056F000-memory.dmp
                Filesize

                1.4MB

                Download
              • memory/4196-25193-0x000000000ADC0000-0x000000000ADF4000-memory.dmp
                Filesize

                208KB

                Download