Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 02:05

General

  • Target

    59517d5dc856f7d0121c94235e08d56bc13524436d6bedd9f3b1caf37ec67320.exe

  • Size

    674KB

  • MD5

    dc91f4b8d1df6d3ce7641c5c36e4978e

  • SHA1

    2e14bbf9db4b8cc7d6e25bcfa9c695907f6d0113

  • SHA256

    59517d5dc856f7d0121c94235e08d56bc13524436d6bedd9f3b1caf37ec67320

  • SHA512

    bf81c7e212a50a69af3bd4c1b7f4b9771436b18fd18f0958407d6a08b71cf91617523680a2b98adc256a9d412c7df09aaa33c86a5c9ec40d844920f6e6ebb8bb

  • SSDEEP

    12288:MSjDNl0duAnix0g8lFDFK6jjg5+nAuIWxGHrSh:l6duz8n3g5+AuIWxY

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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 1 IoCs
  • 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 SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\59517d5dc856f7d0121c94235e08d56bc13524436d6bedd9f3b1caf37ec67320.exe
    "C:\Users\Admin\AppData\Local\Temp\59517d5dc856f7d0121c94235e08d56bc13524436d6bedd9f3b1caf37ec67320.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3220
    • C:\Users\Admin\AppData\Local\Temp\59517d5dc856f7d0121c94235e08d56bc13524436d6bedd9f3b1caf37ec67320.exe
      "C:\Users\Admin\AppData\Local\Temp\59517d5dc856f7d0121c94235e08d56bc13524436d6bedd9f3b1caf37ec67320.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4524
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4104 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3208

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3220-8-0x00000000052C0000-0x00000000052D0000-memory.dmp

      Filesize

      64KB

    • memory/3220-2-0x0000000005320000-0x00000000058C4000-memory.dmp

      Filesize

      5.6MB

    • memory/3220-9-0x0000000006890000-0x0000000006914000-memory.dmp

      Filesize

      528KB

    • memory/3220-10-0x0000000007C30000-0x0000000007CCC000-memory.dmp

      Filesize

      624KB

    • memory/3220-4-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/3220-5-0x0000000005020000-0x000000000502A000-memory.dmp

      Filesize

      40KB

    • memory/3220-6-0x0000000006540000-0x00000000065E2000-memory.dmp

      Filesize

      648KB

    • memory/3220-7-0x00000000052A0000-0x00000000052BA000-memory.dmp

      Filesize

      104KB

    • memory/3220-0-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

      Filesize

      4KB

    • memory/3220-1-0x00000000003E0000-0x000000000048E000-memory.dmp

      Filesize

      696KB

    • memory/3220-3-0x0000000004E70000-0x0000000004F02000-memory.dmp

      Filesize

      584KB

    • memory/3220-14-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4524-13-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4524-11-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/4524-15-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4524-16-0x0000000005970000-0x00000000059D6000-memory.dmp

      Filesize

      408KB

    • memory/4524-18-0x0000000006F10000-0x0000000006F60000-memory.dmp

      Filesize

      320KB

    • memory/4524-19-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB