Overview

overview

10

Static

static

a3917f5f8b...48.exe

windows7_x64

10

a3917f5f8b...48.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    134s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    13-05-2021 14:29

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General

  • Target

    a3917f5f8b19e41145982e0e8ee136602e476e4c0f9e4818e3a77ed0e9a48748.exe

  • Size

    92KB

  • MD5

    55cf2618f6ce9695543798a926f1b440

  • SHA1

    9e9a5921564ec6b3c0cc85499e48e445f1faa370

  • SHA256

    a3917f5f8b19e41145982e0e8ee136602e476e4c0f9e4818e3a77ed0e9a48748

  • SHA512

    c8a4d02221b4d8797ae1a53de2231a8d123c54122cb14066506514259cc6069cb3146e0113e94dbc4797735b031547664675bccfbe6ac628954e145d38056bd1

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 hidebak@protonmail.com Write this ID in the title of your message FFA0D148 In case of no answer in 24 hours write us to theese e-mails: hidebak@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

hidebak@protonmail.com

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
  • 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\a3917f5f8b19e41145982e0e8ee136602e476e4c0f9e4818e3a77ed0e9a48748.exe
    "C:\Users\Admin\AppData\Local\Temp\a3917f5f8b19e41145982e0e8ee136602e476e4c0f9e4818e3a77ed0e9a48748.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:3936
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1112
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1680
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1972
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3740
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:2112
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2312
        • 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:2252
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:3800
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2680

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Initial Access

          Execution

          Persistence

          Registry Run Keys / Startup Folder

          1
          T1060

          Privilege Escalation

          Defense Evasion

          File Deletion

          2
          T1107

          Modify Registry

          1
          T1112

          Credential Access

          Credentials in Files

          1
          T1081

          Discovery

          System Information Discovery

          1
          T1082

          Lateral Movement

          Collection

          Data from Local System

          1
          T1005

          Exfiltration

          Command and Control

          Impact

          Inhibit System Recovery

          2
          T1490

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            6c4a20847b56f4b09f83da808f82ed69

            SHA1

            13a22bc55de85985bcbddeba11f5e0d37b1cbb26

            SHA256

            a3235c7e17c1daf00e826b8fced588bf399844a3b932c6e93df059b120f47561

            SHA512

            ed891814b48389ec42f53e6fe4cd4c1e2cfb616ab1eb27defd3774610d7b024e0a6b144933b3a06002d1ed44f09bf04e6c01ee02f1a9bc6083ecda6b7ae80a5a

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

            6c4a20847b56f4b09f83da808f82ed69

            SHA1

            13a22bc55de85985bcbddeba11f5e0d37b1cbb26

            SHA256

            a3235c7e17c1daf00e826b8fced588bf399844a3b932c6e93df059b120f47561

            SHA512

            ed891814b48389ec42f53e6fe4cd4c1e2cfb616ab1eb27defd3774610d7b024e0a6b144933b3a06002d1ed44f09bf04e6c01ee02f1a9bc6083ecda6b7ae80a5a

            Download Submit
          • memory/1112-114-0x0000000000000000-mapping.dmp
            Download
          • memory/1680-115-0x0000000000000000-mapping.dmp
            Download
          • memory/1972-116-0x0000000000000000-mapping.dmp
            Download
          • memory/2112-118-0x0000000000000000-mapping.dmp
            Download
          • memory/2252-120-0x0000000000000000-mapping.dmp
            Download
          • memory/2312-119-0x0000000000000000-mapping.dmp
            Download
          • memory/3740-117-0x0000000000000000-mapping.dmp
            Download
          • memory/3800-121-0x0000000000000000-mapping.dmp
            Download