Analysis

  • max time kernel
    135s
  • max time network
    127s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    02/09/2020, 13:25

General

  • Target
    DIL-Statement Overdues & Listed Invoice-August 2020.exe
  • Size 518KB
  • Sample200902-3bhdsaw8ee
  • SHA256 fd5a7b200d38d962d9dc74639994bb1ecf989ecc189a5c2d06bc5196120f4ea5
  • MD5 SHA1 SHA512
Score
9/10

Malware Config

Signatures

  • ServiceHost packer 35 IoCs

    Detects ServiceHost packer used for .NET malware

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Modifies data under HKEY_USERS 5 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 488 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DIL-Statement Overdues & Listed Invoice-August 2020.exe
    "C:\Users\Admin\AppData\Local\Temp\DIL-Statement Overdues & Listed Invoice-August 2020.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3100
    • C:\Windows\SysWOW64\Notepad.exe
      "C:\Windows\System32\Notepad.exe"
      2⤵
        PID:1120
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Public\Natso.bat
          3⤵
            PID:4168
            • C:\Windows\SysWOW64\reg.exe
              reg delete hkcu\Environment /v windir /f
              4⤵
              • Modifies registry key
              PID:4252
        • C:\Program Files (x86)\internet explorer\ieinstal.exe
          "C:\Program Files (x86)\internet explorer\ieinstal.exe"
          2⤵
            PID:4180
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
          1⤵
          • Drops file in Windows directory
          • Modifies data under HKEY_USERS
          • Suspicious use of AdjustPrivilegeToken
          PID:1004

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              memory/1120-2-0x0000000002FB0000-0x0000000002FB1000-memory.dmp

              memory/1120-4-0x0000000003270000-0x0000000003271000-memory.dmp

              memory/1120-243-0x0000000006B50000-0x0000000006B51000-memory.dmp

              memory/3100-0-0x00000000042D0000-0x0000000004325000-memory.dmp

              memory/3100-242-0x0000000050480000-0x000000005049A000-memory.dmp

              memory/4180-246-0x0000000000400000-0x0000000000554000-memory.dmp

              memory/4180-248-0x0000000000400000-0x0000000000554000-memory.dmp