Overview

overview

10

Static

static

3

sample.exe

windows7-x64

10

sample.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/11/2023, 06:50

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General

  • Target

    sample.exe

  • Size

    92KB

  • MD5

    f545b712775a137be79e634c0848c55d

  • SHA1

    48706bdc83eac3d036b668f2b08199c53270c10f

  • SHA256

    40450fa3237ce2a72d863a74b4ef89df8266253a0b287adeff6de28cee17ae5f

  • SHA512

    d5381665e5d3f1c471f2028d5556219480c0ff55c3884d00b36e86897d01e81894aa65d455c187a3eec6de35f3e7d3cc9c54dfd82eb626e4574ba47d20604de9

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AF9TrjvfsoiZUb347/BM+bGAmtb7GDunvuuE0Arx:Qw+asqN5aW/hLNnEowwI7y+iAmtAuOr

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

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
  • Renames multiple (461) files with added filename extension

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

    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
  • 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 16 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\sample.exe
    "C:\Users\Admin\AppData\Local\Temp\sample.exe"
    1⤵
    • 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:2436
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3644
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:4564
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3556
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4552
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:6976
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:4280
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
            PID:6360
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:6824
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:744

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-549ED748-SARA.[AI_SARA].GPT
            Filesize

            2.9MB

            MD5

            fed0191b49f6563540879b4e205ead15

            SHA1

            df678b703bfd8dd6e4dea9707136058ddde47384

            SHA256

            55d39ffad406099590b9417794acd7cfbf439a424aa0811b24bc359cd2b642e1

            SHA512

            553c1f86e46c28dda636ac5d5b3607760312d08a105a8b161d51a5f9f9c065731a35706f241db6b129cd8994b8d4ecb3f0977247530c13bfc7616ff73d46254f

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

            2KB

            MD5

            9f6b3f9982120b98d966f6803efbcf77

            SHA1

            e5c9595c1ae81b51a71496c5aa0f78c10ad71693

            SHA256

            8c1616559084e5c43688880477e7c2fbbc978414dfbaf9889eda593b4b49619e

            SHA512

            5d29c0318807fecb3fcaa3804379965161a298d653966115874e8551780047323e6fda06c56ade7123c3d8918a38fd45947ce3e6224d954d3a523b22db403373

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

            2KB

            MD5

            9f6b3f9982120b98d966f6803efbcf77

            SHA1

            e5c9595c1ae81b51a71496c5aa0f78c10ad71693

            SHA256

            8c1616559084e5c43688880477e7c2fbbc978414dfbaf9889eda593b4b49619e

            SHA512

            5d29c0318807fecb3fcaa3804379965161a298d653966115874e8551780047323e6fda06c56ade7123c3d8918a38fd45947ce3e6224d954d3a523b22db403373

            Download Submit