Overview

overview

10

Static

static

10

2024-07-01...ma.exe

windows7-x64

10

2024-07-01...ma.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-07-2024 13:25

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General

  • Target

    2024-07-01_511738859da1bb1e49d6391927d63783_crysis_dharma.exe

  • Size

    92KB

  • MD5

    511738859da1bb1e49d6391927d63783

  • SHA1

    fe7ac5b4d0372b513c13f2c8f23b0a59019773bf

  • SHA256

    20ce14d53c4c1018a9c3a9fe6bffa498cfbf437b6c332c65354a84c876732fdf

  • SHA512

    bd67af55703f3c71a92947602ce9e5989b856bd8c59952bc70c784c39dbf5d62a0586895ac047d5bde3f90b7f6a3d6de043d3d60898b69b558e60ba36fc821fb

  • SSDEEP

    1536:0Bwl+KXpsqN5vlwWYyh69S4AnT2TtLjXZ67McsRmaBNSaHRl63:ew+asqN5aW/h5RgjXZ675aBNBO

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 010BF27F 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 (525) 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 3 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\2024-07-01_511738859da1bb1e49d6391927d63783_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-07-01_511738859da1bb1e49d6391927d63783_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:540
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1956
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:5312
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3476
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:8100
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:3560
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:5768
        • 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:5788
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:5952
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:6136

          Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-010BF27F.[[email protected]].ncov
            Filesize

            2.7MB

            MD5

            b82925445ce9bc9cf96055b87cc921a2

            SHA1

            bbc3ca9b7eb23ee3eae96f0b6562eec5c9910589

            SHA256

            cc56f107f9aaef3a5ef79d64aba74b943ee5af4d6bc25acaae5659e8b6e72606

            SHA512

            99318d26447c3073b14941a9eb4b476b587907ef344cf5638a2619e4ad3de3e393e0522398d63fbd9aa49d99dc262a42a939304d9fd3b113c7065d539833fa1a

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

            13KB

            MD5

            ad29fddda7edcbd548609c7454c357a6

            SHA1

            9cbae105b883d8612a6487cafd76ca466267f1fb

            SHA256

            400be80b20fe916592e2296793d7e60f530580964e7287ed6ab462de2e814c29

            SHA512

            371f9651983212d0cc1c5aa0e5e18cb5f4c3c4bb41e4f82577d4d3ce99f9dbdc57da3e8a1a79af2bbf020d868c406d2f76c1ca470a0c4134468274b973f2aaa8

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