Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/02/2025, 04:43

General

  • Target

    payload.exe

  • Size

    92KB

  • MD5

    e7290701c6f837d655e00f5df6ca4b40

  • SHA1

    1b2ed5c4871d08ebc8a62495fb5c8dd4c897e2d1

  • SHA256

    7ecb2207b8e9e3e95700c1a0e8616995a07aecc3437d53705ba9dc6bf7ca18e0

  • SHA512

    5c007fe1be37226178ecb98f2a461b84cfbd7dcb39b1e8ddb6db87258ad6140a73049235d0520ec3218cc9674ac365b8f04761968189213b0402befe595650fa

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AYhAnjumqSah8RHpmxQE71lLNKs71v+Jj:Qw+asqN5aW/hLmhq6h8RHoeEx+

Malware Config

Signatures

  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

  • Dharma family
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (654) files with added filename extension

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

  • Drops startup file 5 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Interacts with shadow copies 3 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\payload.exe
    "C:\Users\Admin\AppData\Local\Temp\payload.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
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3364
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1540
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:6424
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:7772
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:5672
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:7560
        • 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:5760
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:1980
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4336

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-E5CC8FBE.[[email protected]].SCRT

            Filesize

            2.7MB

            MD5

            1332f3e305314c3a53d958cf2389a943

            SHA1

            d75057d2624b3186c2efa3e549dede650ecdf450

            SHA256

            7066c6f4aabf602d01a09a10355d03c5232c42a0114582ae3bd257a2b543e389

            SHA512

            af7dc590545cef849d8253a364fc3564cdd05e15ef97b02958ff376626c208af2e5a7cf509d9eb044cebc15c851d590ce0aec216240135d6390c30754e176283

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

            Filesize

            1KB

            MD5

            20100b200e95a41fd1fb1ccd87e8ff7d

            SHA1

            923dce6ed9d590f493969e5ddf88591962e851b4

            SHA256

            8f470e0283458dba2ddc54ab05cdd4a00c474981f5af73ad957ad2cd24aa79da

            SHA512

            237b60e75e235c5c37f3b2bb19575eac89fdf754567c52a3c2f466270e1445255fc68f918bf6a850bd995748cd7ab4c1250c6fb17c8be538d5cf814459e0013d