Overview

overview

10

Static

static

comservice32.exe_.exe

windows7_x64

comservice32.exe_.exe

windows10_x64

10

Analysis

  • max time kernel
    301s
  • max time network
    279s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    26-08-2021 02:50

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General

  • Target

    comservice32.exe_.exe

  • Size

    92KB

  • MD5

    b9750a01692e2c7bfecb9ca076d9b119

  • SHA1

    656357256b6e0b8e9b0af86b00076968a9fb72a1

  • SHA256

    cd4195d92768aeb441215d758781984fe69317487fff6fcc76c680a93e1c2ec6

  • SHA512

    6a6dfe7a676fe6cbe2bf2c7b7b0c85fe2632cd7c3ed4f8d2fcbb36ed30be6e62c9cea13e29f74a21e2bedeff65ea51cb129f527fc7e85ad4b2b7a1b72e9971a1

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 04C6E956 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
  • 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 FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\comservice32.exe_.exe
    "C:\Users\Admin\AppData\Local\Temp\comservice32.exe_.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:2288
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2904
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2816
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3544
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2272
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:3796
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:184
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Suspicious use of FindShellTrayWindow
          PID:3364
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Suspicious use of FindShellTrayWindow
          PID:424
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3360
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\Desktop\FILES ENCRYPTED.txt
        1⤵
          PID:2980

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

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

          e7b2036496e52829633d65f6cf642b2a

          SHA1

          b276bd0f6721566de4264df9a606e2a6cb3901a6

          SHA256

          f12e558aadb46ae4606205ae4e95077bc113eeb7c63458cc3099bf934e5c4122

          SHA512

          09152ea5a7a9a784f3c8c1a282e70324a264ac01425c529f4bf606b4f9fea7d09812c901e75d798795399ee72066c8bb59f1afabd7dcfa921b7df237d926a0e5

          Download Submit

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

          e7b2036496e52829633d65f6cf642b2a

          SHA1

          b276bd0f6721566de4264df9a606e2a6cb3901a6

          SHA256

          f12e558aadb46ae4606205ae4e95077bc113eeb7c63458cc3099bf934e5c4122

          SHA512

          09152ea5a7a9a784f3c8c1a282e70324a264ac01425c529f4bf606b4f9fea7d09812c901e75d798795399ee72066c8bb59f1afabd7dcfa921b7df237d926a0e5

          Download Submit

        • C:\Users\Public\Desktop\FILES ENCRYPTED.txt
          MD5

          c7f48ffcefe3a856011c220ad5db60cf

          SHA1

          97e3d0e652682de094e096d7e543100b0442602d

          SHA256

          732e32d48792d880e9e2d0ac1064aa050a52e622db20b727edd9a655af2a4323

          SHA512

          c24348f37758ce4a4170647870b9326297e1868ed06c2de1b12ecbdbec5923fd63e7174f90598428fb0aae0b2fb659eba13e5790a0d8b05834152b05932978d7

          Download Submit

        • memory/184-119-0x0000000000000000-mapping.dmp

          Download

        • memory/424-121-0x0000000000000000-mapping.dmp

          Download

        • memory/2272-117-0x0000000000000000-mapping.dmp

          Download

        • memory/2816-115-0x0000000000000000-mapping.dmp

          Download

        • memory/2904-114-0x0000000000000000-mapping.dmp

          Download

        • memory/3364-120-0x0000000000000000-mapping.dmp

          Download

        • memory/3544-116-0x0000000000000000-mapping.dmp

          Download

        • memory/3796-118-0x0000000000000000-mapping.dmp

          Download