Overview

overview

10

Static

static

3

2023-06-03...is.exe

windows7-x64

10

2023-06-03...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    06-06-2023 08:01

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General

  • Target

    2023-06-03_1fb7ca6d6b4514a7bf4638781ba1fe54_crysis.exe

  • Size

    92KB

  • MD5

    1fb7ca6d6b4514a7bf4638781ba1fe54

  • SHA1

    6ae479c2054a9a244c9a8fd0becc2d6bc4f1f9c7

  • SHA256

    d270b772179e7258bb802d78e49c3f355010146bb38e73643a6ebb5b2805ca17

  • SHA512

    db4483ddfdbd5dec275b3cc4b5c7f730cb25956665c0b4d9827d91d3498d681d99100cefd9bca838aa8f97065060e8f35a46fab98442fc47f3a4b3275bda62ba

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AmQJn3UuE3zrSYDKSeKg2nXGc:Qw+asqN5aW/hLIQNBEDrFcKL

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

Extracted

Path

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

Ransom Note
All your files have been 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] Free decryption as guarantee Before paying you can send us up to 3 files for free decryption. The total size of files must be less than 3Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain 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 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Renames multiple (313) files with added filename extension

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

    ransomware
  • 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
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • 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\2023-06-03_1fb7ca6d6b4514a7bf4638781ba1fe54_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-06-03_1fb7ca6d6b4514a7bf4638781ba1fe54_crysis.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:1580
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1888
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1432
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:608
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2764
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1036
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2852
        • 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:2944
        • 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:2912
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1204

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\osetup.dll.id-2DDFE436.[[email protected]].thx
        Filesize

        6.3MB

        MD5

        441dfffde2f484d8cb43248e1a04c8ef

        SHA1

        ba5d89d3753604b036ed35658f31f794acc47a09

        SHA256

        35c3142e8da8c5cc11848cc6c48b02ef5b9181174e643e11ff214ded5e069e2d

        SHA512

        208a5f4ad7382da1113c562ee9a5ed18bb345d7f332f826c7f78ebe1d1971e1373692e82bfdf1dcedc472e2d9bb8820048c9013adc953f14bfa62d3f152fdec3

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

        4KB

        MD5

        c55ecc534ba806ce4157891373730667

        SHA1

        98d164e4750c419e71c6eea036cc407f99582b5d

        SHA256

        94b8b7450c0a7f5a4755770a9edf90b05bf34628ab02a0467f3cc315a5217d69

        SHA512

        421732db113610a6fc68e6928aabf2682799eb3cc6dff1e006449d7b5624237945c4d6e0ff23f72f29af8f44addc97bd0aaffc38ff5ccb584e563698eb7d31d0

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

        4KB

        MD5

        c55ecc534ba806ce4157891373730667

        SHA1

        98d164e4750c419e71c6eea036cc407f99582b5d

        SHA256

        94b8b7450c0a7f5a4755770a9edf90b05bf34628ab02a0467f3cc315a5217d69

        SHA512

        421732db113610a6fc68e6928aabf2682799eb3cc6dff1e006449d7b5624237945c4d6e0ff23f72f29af8f44addc97bd0aaffc38ff5ccb584e563698eb7d31d0

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      • memory/2944-20112-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp

        Filesize

        64KB

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