Analysis

  • max time kernel
    142s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    31/10/2024, 09:41

General

  • Target

    Quotation.exe

  • Size

    1.1MB

  • MD5

    5607e8b6d0197e51ec19233e72bc2036

  • SHA1

    91cf6d8f6eeb59e44741d16c4a1ba38cffe59435

  • SHA256

    2013e4b243a72b09add6488f84ad97b47ce0587cdecc1114f4380c82650e069c

  • SHA512

    bd1334cf2a73bfaf4b4235baaa0b4f0ef86e352e90323f60912a1e749f31e2ce82cb29acd45e8b3df74bd0f172239f7cf31fd3f7303eb299d9d7e21ea4e4dd92

  • SSDEEP

    24576:64nhDoAFKQnWqZRi73deBNF12ZNXLGQ7WczkxFnfbP98:6+hkhQnxZRiBe5iNXKQKczga

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 6 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:2792
    • 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:2592

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Local\Temp\nsi57D2.tmp\System.dll

          Filesize

          12KB

          MD5

          d6f54d2cefdf58836805796f55bfc846

          SHA1

          b980addc1a755b968dd5799179d3b4f1c2de9d2d

          SHA256

          f917aef484d1fbb4d723b2e2d3045cb6f5f664e61fbb3d5c577bd1c215de55d9

          SHA512

          ce67da936a93d46ef7e81abc8276787c82fd844c03630ba18afc3528c7e420c3228bfe82aeda083bb719f2d1314afae913362abd1e220cb364606519690d45db

        • memory/2592-18-0x0000000077C80000-0x0000000077E29000-memory.dmp

          Filesize

          1.7MB

        • memory/2592-19-0x0000000000820000-0x0000000001882000-memory.dmp

          Filesize

          16.4MB

        • memory/2592-41-0x0000000000820000-0x0000000001882000-memory.dmp

          Filesize

          16.4MB

        • memory/2592-42-0x0000000000820000-0x0000000000860000-memory.dmp

          Filesize

          256KB

        • memory/2792-16-0x0000000077C81000-0x0000000077D82000-memory.dmp

          Filesize

          1.0MB

        • memory/2792-17-0x0000000077C80000-0x0000000077E29000-memory.dmp

          Filesize

          1.7MB