Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    20/03/2024, 02:27

General

  • Target

    8a3597999df227bed6a515aebd8ecf14468a8e3f23d570af30f42d72b3f6356b.exe

  • Size

    558KB

  • MD5

    eef80ad0744688be6c6029e7793dcf91

  • SHA1

    35c0251531d08a060807c429e0833b5d48099a9d

  • SHA256

    8a3597999df227bed6a515aebd8ecf14468a8e3f23d570af30f42d72b3f6356b

  • SHA512

    ed28dbb5861aa55f64a0ff08851df3419275c780bc215a5821d08a49c5f1ccc16b0d7ba635f9394b467a48caef841101254dc8982bd0b28b0a3bdcc661bc870c

  • SSDEEP

    12288:EMwrhdMp7SyAHZ5lEhugESlldjfmj/IiZY4CqXr6pSD8gZLI:EMwr0p7STUE6+jdm9qb/8gZI

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Detect packed .NET executables. Mostly AgentTeslaV4. 3 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 3 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 3 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 3 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 3 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 3 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 3 IoCs
  • 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 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 3 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).

  • 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\8a3597999df227bed6a515aebd8ecf14468a8e3f23d570af30f42d72b3f6356b.exe
    "C:\Users\Admin\AppData\Local\Temp\8a3597999df227bed6a515aebd8ecf14468a8e3f23d570af30f42d72b3f6356b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Users\Admin\AppData\Local\Temp\8a3597999df227bed6a515aebd8ecf14468a8e3f23d570af30f42d72b3f6356b.exe
      "C:\Users\Admin\AppData\Local\Temp\8a3597999df227bed6a515aebd8ecf14468a8e3f23d570af30f42d72b3f6356b.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2976

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\Setup.ini

          Filesize

          45B

          MD5

          811d42c01c99104b9aa28ce5d62bba94

          SHA1

          7f1b242107a1f5c0b0eae0d0c9170c3172480709

          SHA256

          77af8a34e0ab4168d3698d00a2565eba8670f8c5571d8f0cfe0197d7813dd0bb

          SHA512

          7757bcff4dcc1b88cf3913f5357b03a82a222c095d5aba9397d6c3e9799bdc44894aff8e06ee628b13a573089aa81c121d7edf995844f29ae7274a01aebd00c0

        • C:\Users\Admin\AppData\Local\Temp\Setup.ini

          Filesize

          94B

          MD5

          bdc7d6f49004866c661f77f1d75692c5

          SHA1

          32247c5bb3bad4756e45c9005c252b652cb661ba

          SHA256

          bbffe742896b673b636357a7e7c1fa12ca82dd638a5a685d21642de2d11963eb

          SHA512

          1f5280c9f9ca933a827afd0f3c182655a118f76017cd6f474ffcfebc95ba04f92a2ad6175abf1751573caa209722f6cad2d203b363861fe2700e33845c88c1bf

        • C:\Users\Admin\AppData\Local\Temp\Setup.ini

          Filesize

          112B

          MD5

          4cb3baa83d6a3f766b0e34725206f0ca

          SHA1

          7e24615a503008f5059ece99fa1523d9792c0ca3

          SHA256

          e76f65ecf335bd259ee0f0781e6b9510d4485102a8e08b4e715fb907e98a6076

          SHA512

          3c002ceaf9758cf5abd797afe6ebbd693b407444d261e32701bc531872a77607f213eabfb2a457b04667021c0073830cbed61423f8e44c7c5f0273b2f3d4e8d5

        • C:\Users\Admin\AppData\Local\Temp\Setup.ini

          Filesize

          105B

          MD5

          38c6f7822cd89991db6fccc5b04b96c9

          SHA1

          cec31a690a8d9395d59946690f7528ce5f5e0114

          SHA256

          2eba686a57cb8d9b9633c14fdb01b45f88dda41e4c1b5ad9e04c76342d028146

          SHA512

          a6cb93d984fe69f4f4a2bda9001dac25897e6127ccb848762999a9eb8d18d69fbda7308eb1e8d32f9b9e94678b874dcede10066980a56333d8a2d19a5a7a0db8

        • C:\Users\Admin\AppData\Local\Temp\Setup.ini

          Filesize

          106B

          MD5

          d3399b20b2e5f5fd474078147ad9f5aa

          SHA1

          b9950e5b677296f86bdae37a33caf2f35a50c261

          SHA256

          a0c475d863f50ab69ea8c3bfa8a0509cbfb3b052f46e4679d8349b1926b4402b

          SHA512

          2f2d4ec12dd4ab065ff884a0ca3efd94cd2f4e93a70f4cb8b1d39aa2fe384a8e604250b38b17d9d61f5db98924d00e5589603e0d1d9d9d53160e22368384c519

        • \Users\Admin\AppData\Local\Temp\nstB48.tmp\System.dll

          Filesize

          12KB

          MD5

          6e55a6e7c3fdbd244042eb15cb1ec739

          SHA1

          070ea80e2192abc42f358d47b276990b5fa285a9

          SHA256

          acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506

          SHA512

          2d504b74da38edc967e3859733a2a9cacd885db82f0ca69bfb66872e882707314c54238344d45945dc98bae85772aceef71a741787922d640627d3c8ae8f1c35

        • memory/2220-667-0x0000000077760000-0x0000000077909000-memory.dmp

          Filesize

          1.7MB

        • memory/2220-668-0x0000000077950000-0x0000000077A26000-memory.dmp

          Filesize

          856KB

        • memory/2220-669-0x0000000074E20000-0x0000000074E27000-memory.dmp

          Filesize

          28KB

        • memory/2976-670-0x0000000077760000-0x0000000077909000-memory.dmp

          Filesize

          1.7MB

        • memory/2976-673-0x0000000077950000-0x0000000077A26000-memory.dmp

          Filesize

          856KB

        • memory/2976-671-0x0000000077986000-0x0000000077987000-memory.dmp

          Filesize

          4KB

        • memory/2976-674-0x0000000000490000-0x00000000014F2000-memory.dmp

          Filesize

          16.4MB

        • memory/2976-696-0x0000000000490000-0x00000000014F2000-memory.dmp

          Filesize

          16.4MB

        • memory/2976-697-0x0000000000490000-0x00000000004D2000-memory.dmp

          Filesize

          264KB

        • memory/2976-698-0x00000000725F0000-0x0000000072CDE000-memory.dmp

          Filesize

          6.9MB

        • memory/2976-699-0x0000000077760000-0x0000000077909000-memory.dmp

          Filesize

          1.7MB

        • memory/2976-700-0x00000000397F0000-0x0000000039830000-memory.dmp

          Filesize

          256KB

        • memory/2976-705-0x00000000725F0000-0x0000000072CDE000-memory.dmp

          Filesize

          6.9MB

        • memory/2976-706-0x00000000397F0000-0x0000000039830000-memory.dmp

          Filesize

          256KB