Overview

overview

10

Static

static

1

2023-03-09...is.exe

windows7-x64

10

2023-03-09...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-03-2023 18:51

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General

  • Target

    2023-03-09_29320eedebbf9198c3dad888578d0707_crysis.exe

  • Size

    92KB

  • MD5

    29320eedebbf9198c3dad888578d0707

  • SHA1

    9e32b1e3b4b96b5d0795d60cf2b1b9093c1df167

  • SHA256

    0291e99acfedf4e277d56babb2783ce0a01e873a42627b4e3f4a56c2a10cc24d

  • SHA512

    67e7db4c3d907192b79fcb37d78f7d7d00299b304f5125239d50a0d127034dd6098945d1ca20bed854811d1b4cfdc540ebc0bc017773a5813a96679e90a1f18d

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AEf1a9unhr3AFIvAuUbrcH/zFVc8leMb7bt:Qw+asqN5aW/hL5Mhr3AFIv0u487

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! 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 B65F0658 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 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 1 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). Likely ransomware behaviour.

  • 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\2023-03-09_29320eedebbf9198c3dad888578d0707_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-03-09_29320eedebbf9198c3dad888578d0707_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:4620
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:452
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:4196
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:5908
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4288
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:4772
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:3080
        • 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:720
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:5528
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4788

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-B65F0658.[[email protected]].FUNNY
            Filesize

            2.9MB

            MD5

            00f54653a5a4be92e4175e9f7f36991f

            SHA1

            b764b672068f6a8c702f590621a6e5e20b3bc299

            SHA256

            059c690ef449391a5be3df438bdf14b411d98aa6ecbf63ce6b811090fac332a4

            SHA512

            318fca0de173b02b70f2842d05077b56b7dd97eabb459f958c0e929e81a5dfe54b5855ae0374be8cbf85424fc73f88a6b09fae720a75f362a458d848729f97ed

            Download Submit

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

            13KB

            MD5

            ec0e7088c6748ed701df6851d0e15a1e

            SHA1

            ad12846c334cfc147682b34e0d3dbaa058723b42

            SHA256

            34602a2e4b2eafb0fb23e83a5f8b07b3dc232026464e05a49cb25f99e6bee1f8

            SHA512

            971ae881f13f0b5c65dd13e0c1d3ddde4213e5d58ea326bbcb672505a196df5e2084f0d28d6a6c7c43b7f15ba2b2f5c848dcab6b379d8bd6381cbce2ae4a6980

            Download Submit

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

            13KB

            MD5

            ec0e7088c6748ed701df6851d0e15a1e

            SHA1

            ad12846c334cfc147682b34e0d3dbaa058723b42

            SHA256

            34602a2e4b2eafb0fb23e83a5f8b07b3dc232026464e05a49cb25f99e6bee1f8

            SHA512

            971ae881f13f0b5c65dd13e0c1d3ddde4213e5d58ea326bbcb672505a196df5e2084f0d28d6a6c7c43b7f15ba2b2f5c848dcab6b379d8bd6381cbce2ae4a6980

            Download Submit

          • memory/720-23566-0x000001AE6DF70000-0x000001AE6E427000-memory.dmp

            Filesize

            4.7MB

            Download

          • memory/5528-23567-0x000002234B430000-0x000002234B8E7000-memory.dmp

            Filesize

            4.7MB

            Download