Overview

overview

10

Static

static

3

2023-05-29...is.exe

windows7-x64

10

2023-05-29...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-05-2023 10:43

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General

  • Target

    2023-05-29_4c6a424ad657cc896926ea9ba095dc77_crysis.exe

  • Size

    92KB

  • MD5

    4c6a424ad657cc896926ea9ba095dc77

  • SHA1

    dcffd7bad08bd5ddd88f9dce66956b329f25fa26

  • SHA256

    017b9f584f114b80d16295204766121250f9178bf7c6bbbc2545f448fdf43cac

  • SHA512

    77007125ba292109ca63dacffca3507276bfa3ec4c0a91bd3d35a13087d19f1e108dbd37caa223e802c11c69d84ca30a1a966387cc0ace1b243e495c6326e1b0

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4ALIuoiaqPZbIz4zQmm+7PAplOLsN4WZ:Qw+asqN5aW/hLNjoT8zF7Pf

Score
10/10
dharmapersistenceransomwarespywarestealer

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, follow this link: email mr.freeze@msgsafe.io YOUR ID If you have not been answered via the link within 12 hours, write to us by e-mail: mr.freeze@onionmail.org 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

mr.freeze@msgsafe.io

mr.freeze@onionmail.org

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 (470) files with added filename extension

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

    ransomware
  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

    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\2023-05-29_4c6a424ad657cc896926ea9ba095dc77_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-05-29_4c6a424ad657cc896926ea9ba095dc77_crysis.exe"
    1⤵
    • Modifies extensions of user files
    • 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:4408
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:648
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:496
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1008
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1684
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:5144
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:6060
        • 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:4856
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:4092
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:928

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Initial Access

          Execution

          Persistence

          Registry Run Keys / Startup Folder

          1
          T1060

          Privilege Escalation

          Defense Evasion

          File Deletion

          2
          T1107

          Modify Registry

          1
          T1112

          Credential Access

          Credentials in Files

          1
          T1081

          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

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Program Files\AddShow.3gpp.id-57DCF8C0.[mr.freeze@msgsafe.io].data
            Filesize

            2.9MB

            MD5

            1b53a58d008295c00e14b5f2b639b156

            SHA1

            f1df1cdf38e9865f15bd5cd03b2ac019dcacec24

            SHA256

            52dab481cca72bfbd4e8ea191f217ed464d13752b238265bf47ad23c502a5298

            SHA512

            90dfaac54711231c278e9e2e8169af016a93ea36fffa2b1f43bb08332c174e11dfa21d90e498cd7d4e1f84d1b04abafe49e8510741ab2bbb14654a96f6e2bcc8

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

            7KB

            MD5

            8727ad164caa742982dc6cc077f9541f

            SHA1

            74fef035fb141e96be202bfc1166c98dad35162a

            SHA256

            3190a8053cb35a9830b41baa1417b73ec75be3846cf9ccda31d7f1a8bd458fbc

            SHA512

            f71f4a880651226a501dafb101d6f1bd2e019a07697f8f9c8111b07f948d0e855614aa3cda520e632eb5eab70e2dfd283c5d2c85abaa95e28f737c07495ffdc1

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

            7KB

            MD5

            8727ad164caa742982dc6cc077f9541f

            SHA1

            74fef035fb141e96be202bfc1166c98dad35162a

            SHA256

            3190a8053cb35a9830b41baa1417b73ec75be3846cf9ccda31d7f1a8bd458fbc

            SHA512

            f71f4a880651226a501dafb101d6f1bd2e019a07697f8f9c8111b07f948d0e855614aa3cda520e632eb5eab70e2dfd283c5d2c85abaa95e28f737c07495ffdc1

            Download Submit