Overview

overview

10

Static

static

123a5fd056...ea.exe

windows7_x64

10

123a5fd056...ea.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    187s
  • max time network
    185s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    07-05-2022 20:40

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General

  • Target

    123a5fd056af259f61651556412318f30af49d435a442acc4c79def21aa172ea.exe

  • Size

    3.7MB

  • MD5

    f5adcc295d58d72e8a3dc5068b89241b

  • SHA1

    a8420f69ae8b8cf95fafe56d4c16b9f01e83e741

  • SHA256

    123a5fd056af259f61651556412318f30af49d435a442acc4c79def21aa172ea

  • SHA512

    fc4256f79c4c637bd8d0e0eee245ee9a6b789b173314db9f7fc5352e068357cd8fda1f5638af9d0467c3b8f380e8536d9996dc86c74ea84d3703928d4968a651

Score
10/10
dharmaevasionpersistenceransomware

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
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Drops startup file 1 IoCs
  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    evasion
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\123a5fd056af259f61651556412318f30af49d435a442acc4c79def21aa172ea.exe
    "C:\Users\Admin\AppData\Local\Temp\123a5fd056af259f61651556412318f30af49d435a442acc4c79def21aa172ea.exe"
    1⤵
    • Checks BIOS information in registry
    • Drops startup file
    • Identifies Wine through registry keys
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4476
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4348
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:4340
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4076
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
        PID:4892

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • memory/4076-136-0x0000000000000000-mapping.dmp
        Download
      • memory/4340-135-0x0000000000000000-mapping.dmp
        Download
      • memory/4348-134-0x0000000000000000-mapping.dmp
        Download
      • memory/4476-130-0x0000000076F40000-0x00000000770E3000-memory.dmp
        Filesize

        1.6MB

        Download
      • memory/4476-131-0x0000000000400000-0x0000000000C5D000-memory.dmp
        Filesize

        8.4MB

        Download
      • memory/4476-132-0x000000000CD90000-0x000000000CDC4000-memory.dmp
        Filesize

        208KB

        Download
      • memory/4476-133-0x0000000000400000-0x0000000000C5D000-memory.dmp
        Filesize

        8.4MB

        Download