Overview

overview

10

Static

static

enc.exe

windows7_x64

9

enc.exe

windows10-2004_x64

10

Resubmissions

29/06/2022, 11:24

220629-nh7seahbap 10

29/06/2022, 10:55

220629-m1cvbaghfq 10

Analysis

  • max time kernel
    905s
  • max time network
    909s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    29/06/2022, 11:24

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General

  • Target

    enc.exe

  • Size

    7.7MB

  • MD5

    a7ab0969bf6641cd0c7228ae95f6d217

  • SHA1

    002971b6d178698bf7930b5b89c201750d80a07e

  • SHA256

    117fc30c25b1f28cd923b530ab9f91a0a818925b0b89b8bc9a7f820a9e630464

  • SHA512

    7e1cce428e3b80b60635c354801af6e86354c9437ba7a661ca6a922c17057a16439a97d1ea11873eb359c05018df9eb6040b72fa97b30cf4d04cae56bf052b8a

Score
9/10
persistenceransomware

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
    1⤵
      PID:800
    • C:\Users\Admin\AppData\Local\Temp\enc.exe
      "C:\Users\Admin\AppData\Local\Temp\enc.exe"
      1⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1600
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1492
        • C:\Windows\system32\vssadmin.exe
          vssadmin.exe delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1064
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1756
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\StopInstall.txt
      1⤵
      • Opens file in notepad (likely ransom note)
      PID:876
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      1⤵
        PID:1912
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x510
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1616

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • memory/1600-54-0x000007FEFBE61000-0x000007FEFBE63000-memory.dmp

        Filesize

        8KB

        Download