Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 09:38

General

  • Target
    Quotation.exe
  • Size 1.1MB
  • Sample241031-ll38aaxlap
  • SHA256 2013e4b243a72b09add6488f84ad97b47ce0587cdecc1114f4380c82650e069c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Agenttesla family
  • Loads dropped DLL 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • 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 NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quotation.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2192
    • C:\Users\Admin\AppData\Local\Temp\Quotation.exe
      "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1388

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsjD023.tmp\System.dll
        • Size 12KB
        • SHA256 f917aef484d1fbb4d723b2e2d3045cb6f5f664e61fbb3d5c577bd1c215de55d9
        • MD5 SHA1 SHA512 SSDEEP

        memory/1388-33-0x0000000000820000-0x0000000001A74000-memory.dmp

        memory/1388-37-0x0000000038930000-0x0000000038ED4000-memory.dmp

        memory/1388-45-0x0000000072C30000-0x00000000733E0000-memory.dmp

        memory/1388-18-0x0000000077DC8000-0x0000000077DC9000-memory.dmp

        memory/1388-19-0x0000000077DE5000-0x0000000077DE6000-memory.dmp

        memory/1388-20-0x0000000000820000-0x0000000001A74000-memory.dmp

        memory/1388-34-0x0000000077D41000-0x0000000077E61000-memory.dmp

        memory/1388-44-0x0000000072C3E000-0x0000000072C3F000-memory.dmp

        memory/1388-43-0x0000000039860000-0x000000003986A000-memory.dmp

        memory/1388-35-0x0000000072C3E000-0x0000000072C3F000-memory.dmp

        memory/1388-36-0x0000000000820000-0x0000000000860000-memory.dmp

        memory/1388-38-0x0000000038850000-0x00000000388B6000-memory.dmp

        memory/1388-39-0x0000000072C30000-0x00000000733E0000-memory.dmp

        memory/1388-41-0x00000000395F0000-0x0000000039640000-memory.dmp

        memory/1388-42-0x0000000039640000-0x00000000396D2000-memory.dmp

        memory/2192-17-0x0000000074995000-0x0000000074996000-memory.dmp

        memory/2192-15-0x0000000077D41000-0x0000000077E61000-memory.dmp

        memory/2192-16-0x0000000077D41000-0x0000000077E61000-memory.dmp