Analysis

  • max time kernel
    150s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    18-05-2021 03:17

General

  • Target

    e18bd7ac81dfb412a814dac8145674f748ee5b4d12801ec3bb6ea03cee27099e.exe

  • Size

    199KB

  • MD5

    c783ad4101e1020254cdc16052e6d616

  • SHA1

    71273fabc2235c031220c2d512fef9969bc21435

  • SHA256

    e18bd7ac81dfb412a814dac8145674f748ee5b4d12801ec3bb6ea03cee27099e

  • SHA512

    6dec3e2c50a08485ce6f016c77e79a8f240e841233a88e9520d8fa10fb20cbfc42695a821e11db59bd870b3a98ae53f06c0bcc5a091819f6beea2238f051c781

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 admin@sectex.net Write this ID in the title of your message 36D6BFA2 In case of no answer in 24 hours write us to theese e-mails: admin@sectex.world 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

admin@sectex.net

admin@sectex.world

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.

  • 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\e18bd7ac81dfb412a814dac8145674f748ee5b4d12801ec3bb6ea03cee27099e.exe
    "C:\Users\Admin\AppData\Local\Temp\e18bd7ac81dfb412a814dac8145674f748ee5b4d12801ec3bb6ea03cee27099e.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:4060
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2784
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2668
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2804
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1780
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:2672
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:4048
        • 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:2056
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:1952
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3076

          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

            cba674884e2524aa4e1b04d2400a6873

            SHA1

            a64c1c99232d498f6fedc8e76e826a2cf1b82ac6

            SHA256

            7c5279630f7a8d4bc15f8942b9f7fd81ba696ccfc87ccdbddda879a6abaeb111

            SHA512

            bf6bc768a7460196bab5cc889be159d7523a3ce0a228dfc9d1749167b584ea4976e72c9ce6ff76e32256ec6694007a05e74efc1c6ceeb2be68d91c2bc10c0a12

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

            cba674884e2524aa4e1b04d2400a6873

            SHA1

            a64c1c99232d498f6fedc8e76e826a2cf1b82ac6

            SHA256

            7c5279630f7a8d4bc15f8942b9f7fd81ba696ccfc87ccdbddda879a6abaeb111

            SHA512

            bf6bc768a7460196bab5cc889be159d7523a3ce0a228dfc9d1749167b584ea4976e72c9ce6ff76e32256ec6694007a05e74efc1c6ceeb2be68d91c2bc10c0a12

          • memory/1780-119-0x0000000000000000-mapping.dmp
          • memory/1952-123-0x0000000000000000-mapping.dmp
          • memory/2056-122-0x0000000000000000-mapping.dmp
          • memory/2668-117-0x0000000000000000-mapping.dmp
          • memory/2672-120-0x0000000000000000-mapping.dmp
          • memory/2784-114-0x0000000000000000-mapping.dmp
          • memory/2804-118-0x0000000000000000-mapping.dmp
          • memory/4048-121-0x0000000000000000-mapping.dmp
          • memory/4060-115-0x0000000006C20000-0x0000000006D6A000-memory.dmp
            Filesize

            1.3MB

          • memory/4060-116-0x0000000000400000-0x0000000006C19000-memory.dmp
            Filesize

            104.1MB