Overview

overview

10

Static

static

10

2024-06-12...ma.exe

windows7-x64

10

2024-06-12...ma.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/06/2024, 23:24

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General

  • Target
    2024-06-12_2ce48f5a9883f06c981a3151ac9c0bb3_crysis_dharma.exe
  • Size 92KB
  • Sample240612-3dphlavdqc
  • SHA256 b7f3e9aa802967b204893d8fb7150b4e12830e25e483c69059dcb5fec85ee6d2
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
dharmadefense_evasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

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

Ransom Note
  • YOUR FILES ARE ENCRYPTED Don't worry,you can return all your files! If you want to restore them, write to the mail: [email protected] YOUR ID [email protected] !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. YOUR ID

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 (664) 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\2024-06-12_2ce48f5a9883f06c981a3151ac9c0bb3_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-12_2ce48f5a9883f06c981a3151ac9c0bb3_crysis_dharma.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:3756
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2464
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:3664
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1824
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:8048
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1660
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:6688
        • 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:7324
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:4144
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:6124

          Network

                MITRE ATT&CK Enterprise v15

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                Downloads

                AppvIsvSubsystems32.dll.id-FD4BB091.[[email protected]].NOV
                • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-FD4BB091.[[email protected]].NOV
                • Size 2.7MB
                • SHA256 e778fc75ba9f4941ce2da9989d71bf949c32341ae6418a3c5375f1459a6e0159
                • MD5 SHA1 SHA512 SSDEEP
                Submit Download

                Info.hta
                • Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
                • Size 2KB
                • SHA256 667f8a6ccc26f6e9bbd14e390b35596168b8f63eed15e7cbf3f3811ae66aa677
                • MD5 SHA1 SHA512
                Submit Download