Overview

overview

10

Static

static

3

Ransomware...us.exe

windows7-x64

10

Ransomware...us.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    138s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    13-06-2024 14:14

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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:\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 88A7013F 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 (324) files with added filename extension

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

    ransomware
  • Drops startup file 5 IoCs
  • Loads dropped DLL 3 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
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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⤵
    • 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:1700
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1812
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2564
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2716
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2748
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:2920
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2388
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:1296
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:2256
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1676
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Public\Desktop\Adobe Reader 9.lnk.id-88A7013F.[[email protected]].ncov
        1⤵
        • Loads dropped DLL
        • Modifies registry class
        PID:3740

      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

      2
      T1112

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      System Information Discovery

      1
      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:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\ProPlusWW.msi.id-88A7013F.[[email protected]].ncov
        Filesize

        24.4MB

        MD5

        d93f0f55308ec5a2d1635e7b4581c364

        SHA1

        7625da3ef9b67b8cb7ee27b82b2252ea6e7453dd

        SHA256

        6d361b58d8fcdf2d395c0e333f571a267e62018ea072e40f6a74a35849830c51

        SHA512

        287479f72a15765e004580171bed5f1a5840bd19cca1eee3ddfeaebdbefcdfa87265605af1696977e112856b6fff6dba94f904b87c806ad13906baa60ed1cd74

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

        13KB

        MD5

        699f418dd66593e3cbc38ed33619ca78

        SHA1

        55bf8f2ec9a1c12806667bf2878f75a249dc6d67

        SHA256

        e11ef672847c835cf662b277db29cbdfe4700c1d0497d125248d0852e3ba099a

        SHA512

        70a59b156c0064b078d517bd0f0c0090e76602e25fd6f4605d3cae917fa1a4f9c5d364b0e3aee5ddecf96d0037b865a9b8ae4d01a5c0ab05885a2177a2189920

        Download Submit
      • \PROGRA~1\COMMON~1\MICROS~1\OFFICE14\Cultures\OFFICE.ODF
        Filesize

        4.1MB

        MD5

        c3da214ab5fb2e66e61fd8f63f72839f

        SHA1

        0ad2b19a1a59ec94d373d2c865431300c849902b

        SHA256

        9f4845358945756d231b58d2be9dddd1f436df1955daa79ab04149cf1289f4ef

        SHA512

        84f8035d685d517a0e5de019e61674288c087a48a5e01e1b9315e51ff9a4aa84fa72eb2487fd3357d5a1006a4e7c7ef343707347f997e1b66964b9e6c47c64f7

        Download Submit
      • \PROGRA~1\MICROS~2\Office14\1033\GrooveIntlResource.dll
        Filesize

        8.4MB

        MD5

        48019bd50a809545c202053313cd4b57

        SHA1

        60c431499a9f225334032a2f13b825f7a9da8680

        SHA256

        f9d97706a48caead3004a695b57c252103a67f0be66ba58807b1ed430bbb74fd

        SHA512

        f0ab826b0ee57de7909041671462b87f52fa2837501d1f4fa85d159aadab77f340b12cf5f97ab8a4c1b1d6428c35561e9118f6bb5b3c86628bd93b3d8b7198aa

        Download Submit
      • \PROGRA~1\MICROS~2\Office14\GROOVEEX.DLL
        Filesize

        6.4MB

        MD5

        a71a930e1e61e73da97423bdb95ce2d8

        SHA1

        8779f17ce0f68aef21969e39e1d84019bea04118

        SHA256

        80f65cbcf64bf5de2c957c83af1a41e9fd624bb88c873a4204ccde77ed428be7

        SHA512

        6f36d227d8328b411a8a7eb776eb49de7a4dcb8e18df5caccbf27114b56a79c327b1c9b13bb2d18ff6ca3738bb3a13d819c9b5693385d0a4fe385586f03beac5

        Download Submit
      • memory/1296-20190-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp
        Filesize

        64KB

        Download
      • memory/1700-0-0x0000000000400000-0x000000000056F000-memory.dmp
        Filesize

        1.4MB

        Download
      • memory/1700-1-0x000000000ACA0000-0x000000000ACD4000-memory.dmp
        Filesize

        208KB

        Download
      • memory/1700-2-0x0000000000400000-0x000000000056F000-memory.dmp
        Filesize

        1.4MB

        Download
      • memory/1700-1849-0x0000000000400000-0x000000000056F000-memory.dmp
        Filesize

        1.4MB

        Download
      • memory/1700-9671-0x000000000ACA0000-0x000000000ACD4000-memory.dmp
        Filesize

        208KB

        Download