Overview

overview

10

Static

static

3

2023-12-14...ma.exe

windows7-x64

10

2023-12-14...ma.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    153s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-12-2023 05:09

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General

  • Target

    2023-12-14_d4726540ef9e6bfc0821650db0e62da3_crysis_dharma.exe

  • Size

    92KB

  • MD5

    d4726540ef9e6bfc0821650db0e62da3

  • SHA1

    8881bc14da432189e8ae2494c54bb9db5690b06b

  • SHA256

    f06eec18f16bebed895404d4d77863a2f157cf12695df1b0710f865dc7a5be4b

  • SHA512

    a52cce09463860f8e2be58c9dfbaab56cc00f9fac95500a0f380b0466ff91fcd838bc835ae2c5faba4028bbe174c215fd976f777c4adfa1b2d3e1460386ea531

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AKBYqCWby6/sAemJnmpKoH8VQ27MjCiF:Qw+asqN5aW/hLyBCWW6/fem4pfUQ27M3

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 (498) 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\2023-12-14_d4726540ef9e6bfc0821650db0e62da3_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-12-14_d4726540ef9e6bfc0821650db0e62da3_crysis_dharma.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:3916
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4280
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2532
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2940
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5160
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:376
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:3388
        • 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:212
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:2180
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1060

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-C9BAA996.[downloaded@file].data
            Filesize

            2.7MB

            MD5

            d917f61e3eab54efdf83c7ad401717e7

            SHA1

            d2262d530728a3e63495faf969dce3d06392f353

            SHA256

            0468064634e0da6f151de84788b797f88eca4f522f41006e7a478cbf9c5db810

            SHA512

            e2855d6d57da70b72065debb628d628b06a599da399f9ef9227602c77d8f5b64297dccd664ce432a71b2432cda1f82c656060ed8d02b2e8886ee1649ce63bc38

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