Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    31/10/2024, 09:40

General

  • Target

    whatsappjpg.exe

  • Size

    724KB

  • MD5

    8a3f9583866e402739f7da1541d6038d

  • SHA1

    928530c1cee879a0c6c284f71a56039004ca4fa9

  • SHA256

    fb89c14504a9c08ddc006305975b11a20f0595e1f2ad7bd9475ba5c245eda0f6

  • SHA512

    43040b663ba09c3c9b284c045c4a16250b95117b0e45c17a2d164d2f66089b875850f81adfd122e7e7d73a42d18d6ea482e9e6473a04dea39b85f2230bf3de74

  • SSDEEP

    12288:8tvD9kg2V9Lki65FEyz2szE/oDnv7nUhyl6sgoLpp2NjamHD3v1:1XlP60yz2sMenbUhyo80j1D1

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://mail.hearing-vision.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    LILKOOLL14!

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 1 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.

  • 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\whatsappjpg.exe
    "C:\Users\Admin\AppData\Local\Temp\whatsappjpg.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2128
    • C:\Users\Admin\AppData\Local\Temp\whatsappjpg.exe
      "C:\Users\Admin\AppData\Local\Temp\whatsappjpg.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1816

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • \Users\Admin\AppData\Local\Temp\nsoBD69.tmp\System.dll

          Filesize

          11KB

          MD5

          7399323923e3946fe9140132ac388132

          SHA1

          728257d06c452449b1241769b459f091aabcffc5

          SHA256

          5a1c20a3e2e2eb182976977669f2c5d9f3104477e98f74d69d2434e79b92fdc3

          SHA512

          d6f28ba761351f374ae007c780be27758aea7b9f998e2a88a542eede459d18700adffe71abcb52b8a8c00695efb7ccc280175b5eeb57ca9a645542edfabb64f1

        • memory/1816-15-0x0000000076E80000-0x0000000077029000-memory.dmp

          Filesize

          1.7MB

        • memory/1816-16-0x0000000000490000-0x00000000014F2000-memory.dmp

          Filesize

          16.4MB

        • memory/1816-17-0x0000000000490000-0x00000000014F2000-memory.dmp

          Filesize

          16.4MB

        • memory/1816-18-0x0000000000490000-0x00000000004D2000-memory.dmp

          Filesize

          264KB

        • memory/2128-13-0x0000000076E81000-0x0000000076F82000-memory.dmp

          Filesize

          1.0MB

        • memory/2128-14-0x0000000076E80000-0x0000000077029000-memory.dmp

          Filesize

          1.7MB