Analysis

  • max time kernel
    135s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/02/2025, 04:30

General

  • Target
    r250205113R56_pdf_30KB_.exe
  • Size 30KB
  • Sample250226-e42nvayps2
  • SHA256 d2e44e6691b0ae8188e44eba55e21e3dda24cee85d4bc5289b0aaf1e8f1b08bb
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • darkcloud

Credentials
  • Protocol

    ftp

  • Host

    @StrFtpServer

  • Port

    21

  • Username

    @StrFtpUser

  • Password

    @StrFtpPass

Signatures

  • DarkCloud

    An information stealer written in Visual Basic.

  • Darkcloud family
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Drops startup file 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3456
      • C:\Users\Admin\AppData\Local\Temp\r250205113R56_pdf_30KB_.exe
        "C:\Users\Admin\AppData\Local\Temp\r250205113R56_pdf_30KB_.exe"
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Drops startup file
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4732
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4336

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/4336-1346-0x0000000000400000-0x0000000000458000-memory.dmp

          memory/4336-1357-0x0000000000400000-0x0000000000458000-memory.dmp

          memory/4732-0-0x0000000074FFE000-0x0000000074FFF000-memory.dmp

          memory/4732-1-0x0000000000B40000-0x0000000000B4E000-memory.dmp

          memory/4732-2-0x0000000074FF0000-0x00000000757A0000-memory.dmp

          memory/4732-3-0x0000000006770000-0x00000000068A4000-memory.dmp

          memory/4732-23-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-4-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-51-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-33-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-31-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-29-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-27-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-25-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-21-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-19-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-17-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-15-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-13-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-11-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-10-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-7-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-5-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-67-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-65-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-63-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-61-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-59-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-57-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-55-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-53-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-49-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-47-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-45-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-43-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-41-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-39-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-38-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-35-0x0000000006770000-0x000000000689D000-memory.dmp

          memory/4732-1326-0x0000000074FF0000-0x00000000757A0000-memory.dmp

          memory/4732-1327-0x00000000068B0000-0x000000000693E000-memory.dmp

          memory/4732-1328-0x0000000006B40000-0x0000000006BCA000-memory.dmp

          memory/4732-1329-0x0000000006AA0000-0x0000000006AEC000-memory.dmp

          memory/4732-1330-0x0000000007320000-0x00000000078C4000-memory.dmp

          memory/4732-1331-0x0000000006C90000-0x0000000006CE4000-memory.dmp

          memory/4732-1335-0x0000000074FF0000-0x00000000757A0000-memory.dmp

          memory/4732-1339-0x0000000074FF0000-0x00000000757A0000-memory.dmp

          memory/4732-1340-0x0000000074FF0000-0x00000000757A0000-memory.dmp

          memory/4732-1341-0x0000000074FF0000-0x00000000757A0000-memory.dmp

          memory/4732-1345-0x0000000074FF0000-0x00000000757A0000-memory.dmp