Overview

overview

10

Static

static

1f4843e245...3b.exe

windows7_x64

10

1f4843e245...3b.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    152s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    12-06-2022 18:27

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General

  • Target

    1f4843e245f5d27d18972a23c70be649e10be43059336012e7168ad7e747a63b.exe

  • Size

    878KB

  • MD5

    7bc64d3943ce1cf8171fae93559d2071

  • SHA1

    6493c8d6125d534446bcdc80b1df4129ff1e95fd

  • SHA256

    1f4843e245f5d27d18972a23c70be649e10be43059336012e7168ad7e747a63b

  • SHA512

    a2333c81fb1becaca0feeecb936d7a800376fafb553c5bc8288ebccce4f12fed35a0a1de0bf8684101520953a7d6a085e6291330a0b869e19dc4a29aa5e1bc1d

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 [email protected] Write this ID in the title of your message 587B1B80 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 2 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Suspicious use of SetThreadContext 1 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 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f4843e245f5d27d18972a23c70be649e10be43059336012e7168ad7e747a63b.exe
    "C:\Users\Admin\AppData\Local\Temp\1f4843e245f5d27d18972a23c70be649e10be43059336012e7168ad7e747a63b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4724
    • C:\Users\Admin\AppData\Local\Temp\1f4843e245f5d27d18972a23c70be649e10be43059336012e7168ad7e747a63b.exe
      C:\Users\Admin\AppData\Local\Temp\1f4843e245f5d27d18972a23c70be649e10be43059336012e7168ad7e747a63b.exe
      2⤵
      • Modifies extensions of user files
      • Checks computer location settings
      • 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:448
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4908
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          4⤵
            PID:1524
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:2268
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1128
          • C:\Windows\system32\mode.com
            mode con cp select=1251
            4⤵
              PID:4768
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              4⤵
              • Interacts with shadow copies
              PID:1976
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            3⤵
              PID:2344
            • C:\Windows\System32\mshta.exe
              "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
              3⤵
                PID:556
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4376

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

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

            13KB

            MD5

            66053ae3782589138ffcf86babb63f41

            SHA1

            423409dfc67d5a112307fe223bc6f914373bd731

            SHA256

            5d1281e2eefe77d3fe96315bc92b52e74ae8a5fc995a2b86151a96f00ad6e929

            SHA512

            b7adae54706c14a7f90525c758b92b60c71ea7a242c48a83a0191498d8aa0cb4002202adddd99e26a88f808100f33814b4e2b6c1e31df4d5b1830eec88899a21

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

            13KB

            MD5

            66053ae3782589138ffcf86babb63f41

            SHA1

            423409dfc67d5a112307fe223bc6f914373bd731

            SHA256

            5d1281e2eefe77d3fe96315bc92b52e74ae8a5fc995a2b86151a96f00ad6e929

            SHA512

            b7adae54706c14a7f90525c758b92b60c71ea7a242c48a83a0191498d8aa0cb4002202adddd99e26a88f808100f33814b4e2b6c1e31df4d5b1830eec88899a21

            Download Submit
          • memory/448-132-0x0000000000000000-mapping.dmp
            Download
          • memory/448-133-0x0000000000400000-0x0000000000419000-memory.dmp
            Filesize

            100KB

            Download
          • memory/448-138-0x0000000000400000-0x0000000000419000-memory.dmp
            Filesize

            100KB

            Download
          • memory/556-146-0x0000000000000000-mapping.dmp
            Download
          • memory/1128-142-0x0000000000000000-mapping.dmp
            Download
          • memory/1524-140-0x0000000000000000-mapping.dmp
            Download
          • memory/1976-144-0x0000000000000000-mapping.dmp
            Download
          • memory/2268-141-0x0000000000000000-mapping.dmp
            Download
          • memory/2344-145-0x0000000000000000-mapping.dmp
            Download
          • memory/4724-130-0x0000000000400000-0x00000000004E7000-memory.dmp
            Filesize

            924KB

            Download
          • memory/4724-131-0x00000000023F0000-0x0000000002423000-memory.dmp
            Filesize

            204KB

            Download
          • memory/4768-143-0x0000000000000000-mapping.dmp
            Download
          • memory/4908-139-0x0000000000000000-mapping.dmp
            Download