Overview

overview

10

Static

static

10

2024-06-14...ma.exe

windows7-x64

10

2024-06-14...ma.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    14-06-2024 14:46

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General

  • Target

    2024-06-14_d94f7c19b8d47d9172400fc108de7b2f_crysis_dharma.exe

  • Size

    92KB

  • MD5

    d94f7c19b8d47d9172400fc108de7b2f

  • SHA1

    3e9824ba8df08d6244c5dc0d104ac07f6732712f

  • SHA256

    ce7a258a0e25dd0036f3904fe54837b15dfa2ac7aa331856d79f9c63f9f75b34

  • SHA512

    bffeddef6a4786514daf441872d958a4d94c8148f57da715dbbee8588e6e90dcc871e276ec1a9aa73766e43d7d2d00d05585cf4c01ee4c26255df1cf08439e57

  • SSDEEP

    1536:GBwl+KXpsqN5vlwWYyhZ9S4Ab79XD5Wa9LuISNKErJwoKloI31eh62Y6V:ww+asqN5aW/hSR5X95L3SNKUJwoK/leR

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 3D8624F3 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 5 files for free decryption. The total size of files must be less than 10Mb (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 (323) 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\2024-06-14_d94f7c19b8d47d9172400fc108de7b2f_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-14_d94f7c19b8d47d9172400fc108de7b2f_crysis_dharma.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:2652
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2944
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2756
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2864
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3676
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:2656
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:3144
        • 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:1668
        • 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:3384
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1952

      Network

      MITRE ATT&CK Enterprise v15

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      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\osetup.dll.id-3D8624F3.[[email protected]].bip
        Filesize

        6.3MB

        MD5

        ef4392a9374d479b1cf7e41861fa7654

        SHA1

        5d57c735fba07ee50c1885d668c5a4ce03266d2a

        SHA256

        445c9a49dcb750666ae3f79ff26ef916c469d346cd0c308bd052eefab65c8769

        SHA512

        15faeda0b2a9f3390556536ed451f0d47cf69115c0f8fef7333718e58b7c987d2b242ec823070b8e7d6e8e51627557fc90961bc8cb9c6888a9079a402ec7235a

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

        13KB

        MD5

        1c4dc358ff874e2bc94e54faf0daebd0

        SHA1

        0b30473809bfc9b93dbca12cf5eef3ca90ce3651

        SHA256

        0581e278061e3bd9a95a8e3462f98403b74ca13235f2689d5553393fc3d49405

        SHA512

        ccb8161a174e60293504ae81267ce377eaea6d72387d91f4551d4ed0168e516e657abee5dc3e8c8fb2cf10435b6e3f9a493bbc1bac8d18c59ac9460b27856daa

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      • memory/1668-20153-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp

        Filesize

        64KB

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