Overview

overview

10

Static

static

3

7e4f2594e5...fc.exe

windows7-x64

10

7e4f2594e5...fc.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-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 D6FC39AA 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. 5 IoCs
  • Identifies DHARMA ransomware 20 IoCs
  • Renames multiple (320) files with added filename extension

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

    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
  • 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
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 41 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⤵
    • Suspicious use of WriteProcessMemory
    PID:2744
    • 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:3068
      • C:\Users\Admin\AppData\Local\Temp\7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fc.exe
        C:\Users\Admin\AppData\Local\Temp\7e4f2594e52faa81bd27e0fcb59beb9f93c8f6b8d689e60eb8ce434f250d82fc.exe
        3⤵
        • 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:2540
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2644
          • C:\Windows\system32\mode.com
            mode con cp select=1251
            5⤵
              PID:1664
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              5⤵
              • Interacts with shadow copies
              PID:2840
          • C:\Windows\system32\cmd.exe
            "C:\Windows\system32\cmd.exe"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4264
            • C:\Windows\system32\mode.com
              mode con cp select=1251
              5⤵
                PID:5972
              • C:\Windows\system32\vssadmin.exe
                vssadmin delete shadows /all /quiet
                5⤵
                • Interacts with shadow copies
                PID:5900
            • C:\Windows\System32\mshta.exe
              "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
              4⤵
              • Modifies Internet Explorer settings
              PID:1212
            • C:\Windows\System32\mshta.exe
              "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
              4⤵
              • Modifies Internet Explorer settings
              PID:5320
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2768

      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

      2
      T1112

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      System Information Discovery

      1
      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:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\ProPsWW.cab.id-D6FC39AA.[draggonblack@yahoo.com].arena
        Filesize

        32.7MB

        MD5

        29e9783f2c1336f180d8f3fa0c291ba0

        SHA1

        0fea9742ee3d06fe84bf9fbd295595c7dae59704

        SHA256

        3edbaa5d012684c8f4c171af15bc08356c2514d7413ae512b68c6503244df627

        SHA512

        191d9be279c0388ac68ae9568b905d24eca904c1fbb4a38179ed33c90aaaf552bded76d635e51044d5bf8f696b3b4c12b4847eefc87e7f1b5d70ef751a762935

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

        13KB

        MD5

        1a0d9feb457a8320363c56db819ba46d

        SHA1

        30a7c981493d726eb7b375d64386bc3d3574ae5e

        SHA256

        6f30601d0d1d13128a23f7e440f93cbd811c1288058e790915812c51e0944fb8

        SHA512

        046903fa328a6e4cd0f3a6ce9e33534a353b7986f761c7901d6b09202f008991b4e66450ae4935b367a95f74cb33a13b22b32238514def802e5b5834aef906bc

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      • memory/2540-0-0x0000000000400000-0x0000000000419000-memory.dmp
        Filesize

        100KB

        Download
      • memory/2540-2-0x0000000000400000-0x0000000000419000-memory.dmp
        Filesize

        100KB

        Download
      • memory/2540-3-0x0000000000400000-0x0000000000419000-memory.dmp
        Filesize

        100KB

        Download
      • memory/2540-7-0x0000000000400000-0x0000000000419000-memory.dmp
        Filesize

        100KB

        Download
      • memory/2540-12-0x0000000000400000-0x0000000000419000-memory.dmp
        Filesize

        100KB

        Download