Overview

overview

8

Static

static

server.exe

windows7_x64

8

server.exe

windows10-2004_x64

8

Analysis

  • max time kernel
    117s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20/01/2022, 15:37

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General

  • Target
    server.exe
  • Size 22KB
  • Sample220120-s2g4baaed4
  • SHA256 964a9d8fbfd1886a93c1c09493db044bd37e517c4def61aa779c8734cb5cd68d
  • MD5 SHA1 SHA512
Score
8/10
evasion

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 24 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\server.exe
    "C:\Users\Admin\AppData\Local\Temp\server.exe"
    1⤵
      PID:1712
    • C:\backconnect\server.exe
      C:\backconnect\server.exe
      1⤵
      • Executes dropped EXE
      • Modifies data under HKEY_USERS
      • Suspicious use of WriteProcessMemory
      PID:1116
      • C:\Windows\System32\netsh.exe
        "C:\Windows\System32\netsh.exe" firewall set allowedprogram program = C:\backconnect\server.exe name = backconnect mode = ENABLE
        2⤵
        • Modifies data under HKEY_USERS
        PID:580

    Network

          MITRE ATT&CK Enterprise v6

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          Downloads

          memory/1116-56-0x000007FEFB711000-0x000007FEFB713000-memory.dmp
          Download