Overview

overview

10

Static

static

3

7e4f2594e5...fc.exe

windows7-x64

10

7e4f2594e5...fc.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-02-2024 14:01

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General

  • Target

    7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fc.exe

  • Size

    422KB

  • MD5

    85ad739aba5f21114564d1ea625f84ef

  • SHA1

    5620ccbc0e687c4fc9d274514a9e9623e8e50ec9

  • SHA256

    7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fc

  • SHA512

    c6001217be0a30a86e62f8fe6f2bada8de4ff03e1304b8ac8a0f70e9922eb7cad16fc4d3a52d3bba80bdf52055442c13c2bb5c313282f992c2fef82c603360fc

  • SSDEEP

    12288:P9MHSFNnnzr0Sbw1zhRxizZwR8pDPzUqA+x:P9MHSFNnn+izZZpzzdAS

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 draggonblack@yahoo.com Write this ID in the title of your message 46890083 In case of no answer in 24 hours write us to theese e-mails: byaki_buki@aol.com 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 5 files for free decryption. The total size of files must be less than 10Mb (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

draggonblack@yahoo.com

byaki_buki@aol.com

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
  • Detects win.dharma. 6 IoCs
  • Identifies DHARMA ransomware 24 IoCs
  • Renames multiple (496) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Checks computer location settings 2 TTPs 2 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).

  • 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 27 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fc.exe
    "C:\Users\Admin\AppData\Local\Temp\7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fc.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2532
    • C:\Users\Admin\AppData\Local\Temp\7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fc.exe
      "C:\Users\Admin\AppData\Local\Temp\7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fc.exe" -l
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2728
      • C:\Users\Admin\AppData\Local\Temp\7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fc.exe
        C:\Users\Admin\AppData\Local\Temp\7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fc.exe
        3⤵
        • 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:3028
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:940
          • C:\Windows\system32\mode.com
            mode con cp select=1251
            5⤵
              PID:1152
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              5⤵
              • Interacts with shadow copies
              PID:1208
          • C:\Windows\system32\cmd.exe
            "C:\Windows\system32\cmd.exe"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:8404
            • C:\Windows\system32\mode.com
              mode con cp select=1251
              5⤵
                PID:8152
              • C:\Windows\system32\vssadmin.exe
                vssadmin delete shadows /all /quiet
                5⤵
                • Interacts with shadow copies
                PID:8236
            • C:\Windows\System32\mshta.exe
              "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
              4⤵
                PID:3968
              • C:\Windows\System32\mshta.exe
                "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
                4⤵
                  PID:6312
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:6336

          Network

          MITRE ATT&CK Matrix ATT&CK v13

          Initial Access

          Execution

          Persistence

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Privilege Escalation

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Defense Evasion

          Indicator Removal

          2
          T1070

          File Deletion

          2
          T1070.004

          Modify Registry

          1
          T1112

          Credential Access

          Unsecured Credentials

          1
          T1552

          Credentials In Files

          1
          T1552.001

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          2
          T1082

          Lateral Movement

          Collection

          Data from Local System

          1
          T1005

          Exfiltration

          Command and Control

          Impact

          Inhibit System Recovery

          2
          T1490

          Resource Development

          Reconnaissance

          Replay Monitor

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          Downloads

          • C:\Program Files\Google\Chrome\Application\106.0.5249.119\icudtl.dat.id-46890083.[draggonblack@yahoo.com].arena
            Filesize

            320KB

            MD5

            18a0ef8caac575c5dc6e7c27a2ed9049

            SHA1

            948d06bbfdf6c5b5046ba0bcaa76fdee403df292

            SHA256

            180dd64189bbd26451ba2e5f1851d42281949ad5c27e54cb178f260e77fd24ac

            SHA512

            508f7cfe3d6b0e5a7f5633e18ea12aeea0941b3300f0b00231748f9346975dd3aa06cbe804e9d6c359662220ef36a8ed0b969cfa282280cba35c91ba5078402c

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

            13KB

            MD5

            f832fc69753fdb06fa32874d282a3964

            SHA1

            35092a781be5eb06170864e2e5078f0ac18bba3f

            SHA256

            5d8232341e72f9443775e92b5e9adb650485ca5754f6f03dc5dd0f22a07dfa78

            SHA512

            0430936825ba9e04c7f4d39469b39b85620c94de04e88a1de25933ecb1daf78ca387d6bb05eb144ac7ad4be04093c0a1a37b81af78502db8c3f85aa2cddb0840

            Download Submit
          • memory/3028-0-0x0000000000400000-0x0000000000419000-memory.dmp
            Filesize

            100KB

            Download
          • memory/3028-2-0x0000000000400000-0x0000000000419000-memory.dmp
            Filesize

            100KB

            Download
          • memory/3028-3-0x0000000000400000-0x0000000000419000-memory.dmp
            Filesize

            100KB

            Download
          • memory/3028-7-0x0000000000400000-0x0000000000419000-memory.dmp
            Filesize

            100KB

            Download
          • memory/3028-11-0x0000000000400000-0x0000000000419000-memory.dmp
            Filesize

            100KB

            Download
          • memory/3028-12-0x0000000000400000-0x0000000000419000-memory.dmp
            Filesize

            100KB

            Download