Analysis

  • max time kernel
    145s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    31/10/2024, 10:38

General

  • Target

    Shipping documents 000293994900.exe

  • Size

    722KB

  • MD5

    c8d26f7208eaaa31a839ec190489c9a1

  • SHA1

    c9bc4695a4f4afdcc89d216b7ad8d0ce4d0bc7e3

  • SHA256

    f96b6c703fe5b13fd985d91da265c58d3d5b2f81397ebe27527e59c208819d2e

  • SHA512

    30983bc1f3b8fc96023d5b2773ab41ee1ced9718334d1cc50a24143a4d6ed04dfdc9400c9f401df20bc7dd05919a5936b3e7fb97c7504f804cd06210eee7f168

  • SSDEEP

    12288:8tvD9kg2V9Lki65FEdYjpTEl9msWkXfflWGwzc7MnWAdV/sPsrVawwDXZsBwRsOd:1XlP60dM4b1nlMGMnWAdV9wtsBShx

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.concaribe.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    ro}UWgz#!38E

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.

  • 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
  • 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.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Shipping documents 000293994900.exe
    "C:\Users\Admin\AppData\Local\Temp\Shipping documents 000293994900.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • System Network Configuration Discovery: Internet Connection Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2112
    • C:\Users\Admin\AppData\Local\Temp\Shipping documents 000293994900.exe
      "C:\Users\Admin\AppData\Local\Temp\Shipping documents 000293994900.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2172

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Local\Temp\nsyAF55.tmp\System.dll

          Filesize

          11KB

          MD5

          7399323923e3946fe9140132ac388132

          SHA1

          728257d06c452449b1241769b459f091aabcffc5

          SHA256

          5a1c20a3e2e2eb182976977669f2c5d9f3104477e98f74d69d2434e79b92fdc3

          SHA512

          d6f28ba761351f374ae007c780be27758aea7b9f998e2a88a542eede459d18700adffe71abcb52b8a8c00695efb7ccc280175b5eeb57ca9a645542edfabb64f1

        • memory/2112-14-0x0000000077300000-0x00000000774A9000-memory.dmp

          Filesize

          1.7MB

        • memory/2112-13-0x0000000077301000-0x0000000077402000-memory.dmp

          Filesize

          1.0MB

        • memory/2172-15-0x0000000077300000-0x00000000774A9000-memory.dmp

          Filesize

          1.7MB

        • memory/2172-16-0x0000000000490000-0x00000000014F2000-memory.dmp

          Filesize

          16.4MB

        • memory/2172-18-0x0000000077300000-0x00000000774A9000-memory.dmp

          Filesize

          1.7MB

        • memory/2172-19-0x0000000000490000-0x00000000004D2000-memory.dmp

          Filesize

          264KB