Analysis

  • max time kernel
    152s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    05-05-2021 07:40

General

  • Target

    324cb383fd7f47c079b162b725215bb4badfd4c0b2e41d330fa38344e59e77ce.exe

  • Size

    92KB

  • MD5

    26a879b25708d951e9056ba81bb5a6e5

  • SHA1

    97994d75c3f30cb61295f9c02b0ce15105ae556f

  • SHA256

    324cb383fd7f47c079b162b725215bb4badfd4c0b2e41d330fa38344e59e77ce

  • SHA512

    e8ba5219eb19e9cd7235c63fa9ece1bd26d059efe1ccb01047cae075c3e409a632959717bbbcc2c42013c46fca2cfdb62b8e9c92d67a9568dcd7f57d82c27502

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\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 Sirhirad@protonmail.com Write this ID in the title of your message 489B29E2 In case of no answer in 24 hours write us to theese e-mails: Sirfuxm@protonmail.com 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.
Emails

Sirhirad@protonmail.com

Sirfuxm@protonmail.com

Signatures

  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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.

  • Adds Run key to start application 2 TTPs 3 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\324cb383fd7f47c079b162b725215bb4badfd4c0b2e41d330fa38344e59e77ce.exe
    "C:\Users\Admin\AppData\Local\Temp\324cb383fd7f47c079b162b725215bb4badfd4c0b2e41d330fa38344e59e77ce.exe"
    1⤵
    • Modifies extensions of user files
    • 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:3476
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2656
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1172
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3940
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2808
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:948
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:4000
        • 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:2232
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:1196
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3948

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Persistence

          Registry Run Keys / Startup Folder

          1
          T1060

          Defense Evasion

          File Deletion

          2
          T1107

          Modify Registry

          1
          T1112

          Credential Access

          Credentials in Files

          1
          T1081

          Discovery

          System Information Discovery

          1
          T1082

          Collection

          Data from Local System

          1
          T1005

          Impact

          Inhibit System Recovery

          2
          T1490

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
            MD5

            7380b3a9612bd4f5044996562abdb407

            SHA1

            db54b7d0991b4a7aa1be5b7d2ef3ab81298bd4fe

            SHA256

            ea2c8ba3d27fa827e97f64b0b472c06576d3b640c18387122032c9dc657250a3

            SHA512

            dbea0bfcc34b43333d2026dbe304cfc1c283059fe4289e4fe6e6c167ab503672ce9b1b903271a41ae0cdf853ed4327a209e023781b928c20326b7f6763a1face

          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
            MD5

            7380b3a9612bd4f5044996562abdb407

            SHA1

            db54b7d0991b4a7aa1be5b7d2ef3ab81298bd4fe

            SHA256

            ea2c8ba3d27fa827e97f64b0b472c06576d3b640c18387122032c9dc657250a3

            SHA512

            dbea0bfcc34b43333d2026dbe304cfc1c283059fe4289e4fe6e6c167ab503672ce9b1b903271a41ae0cdf853ed4327a209e023781b928c20326b7f6763a1face

          • memory/948-118-0x0000000000000000-mapping.dmp
          • memory/1172-115-0x0000000000000000-mapping.dmp
          • memory/1196-121-0x0000000000000000-mapping.dmp
          • memory/2232-120-0x0000000000000000-mapping.dmp
          • memory/2656-114-0x0000000000000000-mapping.dmp
          • memory/2808-117-0x0000000000000000-mapping.dmp
          • memory/3940-116-0x0000000000000000-mapping.dmp
          • memory/4000-119-0x0000000000000000-mapping.dmp