Overview

overview

10

Static

static

5d0eba41c8...7e.exe

windows7_x64

10

5d0eba41c8...7e.exe

windows10_x64

8

Analysis

  • max time kernel
    146s
  • max time network
    121s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27/05/2021, 18:51

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General

  • Target
    5d0eba41c858f5da1467481677ccf47e.exe
  • Size 816KB
  • Sample210527-fxfljnv13a
  • SHA256 b734fe93c531236a5f083fa70e88e7c991d5bb6ad4c8c9a293aa7a3280201208
  • MD5 SHA1 SHA512
Score
8/10
discoverypersistence

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
    discovery
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5d0eba41c858f5da1467481677ccf47e.exe
    "C:\Users\Admin\AppData\Local\Temp\5d0eba41c858f5da1467481677ccf47e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:584
    • C:\Users\Admin\AppData\Local\Temp\5d0eba41c858f5da1467481677ccf47e.exe
      "C:\Users\Admin\AppData\Local\Temp\5d0eba41c858f5da1467481677ccf47e.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3756
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\800691c0-cbd8-4bba-8630-818f7c39937c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3796
      • C:\Users\Admin\AppData\Local\Temp\5d0eba41c858f5da1467481677ccf47e.exe
        "C:\Users\Admin\AppData\Local\Temp\5d0eba41c858f5da1467481677ccf47e.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4060
        • C:\Users\Admin\AppData\Local\Temp\5d0eba41c858f5da1467481677ccf47e.exe
          "C:\Users\Admin\AppData\Local\Temp\5d0eba41c858f5da1467481677ccf47e.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1264
  • C:\Users\Admin\AppData\Local\800691c0-cbd8-4bba-8630-818f7c39937c\5d0eba41c858f5da1467481677ccf47e.exe
    C:\Users\Admin\AppData\Local\800691c0-cbd8-4bba-8630-818f7c39937c\5d0eba41c858f5da1467481677ccf47e.exe --Task
    1⤵
    • Executes dropped EXE
    PID:3940

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/584-116-0x00000000023A0000-0x00000000024BB000-memory.dmp
        Download

        memory/1264-124-0x0000000000400000-0x0000000000537000-memory.dmp
        Download

        memory/3756-114-0x0000000000400000-0x0000000000537000-memory.dmp
        Download

        memory/3756-117-0x0000000000400000-0x0000000000537000-memory.dmp
        Download