Overview

overview

10

Static

static

40ca770fe8...55.exe

windows7-x64

10

40ca770fe8...55.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-01-2023 05:33

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General

  • Target

    40ca770fe8a5c994872adf7e0f72ee131960ef65d34b88a66d7047b29f763055.exe

  • Size

    2.0MB

  • MD5

    8bacbf2e386dbc47af1f1390e1bdbbf7

  • SHA1

    1101a108e9ae5aa0a0b905dd3cbbbaa05b7dd41d

  • SHA256

    40ca770fe8a5c994872adf7e0f72ee131960ef65d34b88a66d7047b29f763055

  • SHA512

    34b725360d187a13ff62bec0c74503096d4cef1201b969bef8f708038bcbb0860464e6d012ae7e616ff602549251c03d2664a780e0e57788ea5e1ee9046f5c97

  • SSDEEP

    49152:VnWl+qXj1FhW825PlJ0TJcttcCmIf+u9YZrpkN:VnWlRjTo82Pb0c0NZrqN

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 6B552E78 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
  • 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 behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40ca770fe8a5c994872adf7e0f72ee131960ef65d34b88a66d7047b29f763055.exe
    "C:\Users\Admin\AppData\Local\Temp\40ca770fe8a5c994872adf7e0f72ee131960ef65d34b88a66d7047b29f763055.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2792
    • C:\Users\Admin\AppData\Local\Temp\40ca770fe8a5c994872adf7e0f72ee131960ef65d34b88a66d7047b29f763055.exe
      "C:\Users\Admin\AppData\Local\Temp\40ca770fe8a5c994872adf7e0f72ee131960ef65d34b88a66d7047b29f763055.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:4624
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4352
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          4⤵
            PID:4764
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:4140
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3964
          • C:\Windows\system32\mode.com
            mode con cp select=1251
            4⤵
              PID:5084
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              4⤵
              • Interacts with shadow copies
              PID:3996
          • 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:2644
            • C:\Windows\System32\mshta.exe
              "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
              3⤵
                PID:2128
            • C:\Users\Admin\AppData\Local\Temp\40ca770fe8a5c994872adf7e0f72ee131960ef65d34b88a66d7047b29f763055.exe
              "C:\Users\Admin\AppData\Local\Temp\40ca770fe8a5c994872adf7e0f72ee131960ef65d34b88a66d7047b29f763055.exe" 2 4624 240570828
              2⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:4884
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4576

          Network

          MITRE ATT&CK Enterprise v6

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          Downloads

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

            13KB

            MD5

            544e02a964670c033cf709fe0f9094c9

            SHA1

            e2b6e5fd083900ada7a28c3f50748e7ddb784f3f

            SHA256

            bcb4430cd853bb67f5cd0d44263ba6ef5b5442f04db359bb36c3c400caca6eff

            SHA512

            2655568a6fedc482c23277a878d8af612c894f11e77249e10db46e4946bbe61037d052e94e64590a66ae7a5a57301dd960c01999cf933b2e3ad1668b4d0521ef

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

            13KB

            MD5

            544e02a964670c033cf709fe0f9094c9

            SHA1

            e2b6e5fd083900ada7a28c3f50748e7ddb784f3f

            SHA256

            bcb4430cd853bb67f5cd0d44263ba6ef5b5442f04db359bb36c3c400caca6eff

            SHA512

            2655568a6fedc482c23277a878d8af612c894f11e77249e10db46e4946bbe61037d052e94e64590a66ae7a5a57301dd960c01999cf933b2e3ad1668b4d0521ef

            Download Submit

          • memory/2128-144-0x0000000000000000-mapping.dmp

            Download

          • memory/2644-143-0x0000000000000000-mapping.dmp

            Download

          • memory/2792-132-0x0000000000400000-0x00000000005FF000-memory.dmp

            Filesize

            2.0MB

            Download

          • memory/3964-140-0x0000000000000000-mapping.dmp

            Download

          • memory/3996-142-0x0000000000000000-mapping.dmp

            Download

          • memory/4140-139-0x0000000000000000-mapping.dmp

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          • memory/4352-135-0x0000000000000000-mapping.dmp

            Download

          • memory/4624-138-0x0000000000400000-0x0000000000419000-memory.dmp

            Filesize

            100KB

            Download

          • memory/4624-133-0x0000000000000000-mapping.dmp

            Download

          • memory/4764-136-0x0000000000000000-mapping.dmp

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          • memory/4884-137-0x0000000000400000-0x00000000005FF000-memory.dmp

            Filesize

            2.0MB

            Download

          • memory/4884-134-0x0000000000000000-mapping.dmp

            Download

          • memory/5084-141-0x0000000000000000-mapping.dmp

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