Overview

overview

10

Static

static

7C99F31D30...1F.exe

windows7_x64

10

7C99F31D30...1F.exe

windows10_x64

10

Analysis

  • max time kernel
    303s
  • max time network
    309s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    31-08-2021 19:38

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General

  • Target

    7C99F31D305176ADE5D0EB2CF219333E4B9DA02BF01E9794BA00421B1E23001F.exe

  • Size

    92KB

  • MD5

    ec8e65599a00b0a652f9d8ae8327c588

  • SHA1

    3e971882928f989f252526970dc03ca7e590bc01

  • SHA256

    7c99f31d305176ade5d0eb2cf219333e4b9da02bf01e9794ba00421b1e23001f

  • SHA512

    7b66f2ecb986b489cd9fe274067df9eb63bc7151ca60b6ccb065ddc95bc251e94eda0ec8db7ccbe9306d4bd2016b70e0a952b9ed3aa8284b37e8591eef3f64cc

Score
10/10
dharmapersistenceransomwarespywarestealer

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 [email protected] Write this ID in the title of your message 9B871C23 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
  • 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\7C99F31D305176ADE5D0EB2CF219333E4B9DA02BF01E9794BA00421B1E23001F.exe
    "C:\Users\Admin\AppData\Local\Temp\7C99F31D305176ADE5D0EB2CF219333E4B9DA02BF01E9794BA00421B1E23001F.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:656
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3184
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:3328
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4044
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3932
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:276
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2832
        • 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:2524
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:524
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3380

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

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

            b55f7125d8bc49e553067aa90119cde4

            SHA1

            163dc0ce9b146bf55a0e180f155d395126462c23

            SHA256

            ac24de7645e313f309d36ce84bb9d2736d681d53659dbaff7e2ed6bb42690d2f

            SHA512

            b8cfe53d0a1394b9b9ac6498547ead27145ba7f1941625e7cf86d043490319262d35030810643fc3c74850b4cf134d9f5050a957ab986270458778f9698aabd4

            Download Submit

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

            b55f7125d8bc49e553067aa90119cde4

            SHA1

            163dc0ce9b146bf55a0e180f155d395126462c23

            SHA256

            ac24de7645e313f309d36ce84bb9d2736d681d53659dbaff7e2ed6bb42690d2f

            SHA512

            b8cfe53d0a1394b9b9ac6498547ead27145ba7f1941625e7cf86d043490319262d35030810643fc3c74850b4cf134d9f5050a957ab986270458778f9698aabd4

            Download Submit

          • memory/276-118-0x0000000000000000-mapping.dmp

            Download

          • memory/524-121-0x0000000000000000-mapping.dmp

            Download

          • memory/2524-120-0x0000000000000000-mapping.dmp

            Download

          • memory/2832-119-0x0000000000000000-mapping.dmp

            Download

          • memory/3184-114-0x0000000000000000-mapping.dmp

            Download

          • memory/3328-115-0x0000000000000000-mapping.dmp

            Download

          • memory/3932-117-0x0000000000000000-mapping.dmp

            Download

          • memory/4044-116-0x0000000000000000-mapping.dmp

            Download