Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240319-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-04-2024 01:22

General

  • Target

    626b38978f47f29e45f43f77607f0cbf470bd125322f7f42fe1e23bb30786850.exe

  • Size

    812KB

  • MD5

    8881285f44d945c3c72e835582fc435d

  • SHA1

    648302dc8bbad23e2d8b3742a826bc29f5b99bc7

  • SHA256

    626b38978f47f29e45f43f77607f0cbf470bd125322f7f42fe1e23bb30786850

  • SHA512

    5c242271d43b615df6251b4439b393b3d9db9aec2642b7a8638c04f4cb01f528c7311c125b6622a528a3b7340e603d599400c4d720b11b736dd74b7904fa76ba

  • SSDEEP

    12288:HCsLAMhHwgG3hh5qaYXDuCNE17NCKwNpJuRe9GMYRx/TvA/x6b0VeeaMZcxq2XIc:Pohh5qlzjC17UKwNpJHqWIMeZ40qX

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.chairmanchairs.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    info8676

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.

  • 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\626b38978f47f29e45f43f77607f0cbf470bd125322f7f42fe1e23bb30786850.exe
    "C:\Users\Admin\AppData\Local\Temp\626b38978f47f29e45f43f77607f0cbf470bd125322f7f42fe1e23bb30786850.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:228
    • C:\Users\Admin\AppData\Local\Temp\626b38978f47f29e45f43f77607f0cbf470bd125322f7f42fe1e23bb30786850.exe
      "C:\Users\Admin\AppData\Local\Temp\626b38978f47f29e45f43f77607f0cbf470bd125322f7f42fe1e23bb30786850.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4516
  • 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=4132 --field-trial-handle=2260,i,4762972005863767630,9297428255150568035,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3728

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\626b38978f47f29e45f43f77607f0cbf470bd125322f7f42fe1e23bb30786850.exe.log

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • memory/228-8-0x0000000005B40000-0x0000000005BDE000-memory.dmp

      Filesize

      632KB

    • memory/228-3-0x0000000005680000-0x0000000005712000-memory.dmp

      Filesize

      584KB

    • memory/228-9-0x00000000089B0000-0x0000000008A4C000-memory.dmp

      Filesize

      624KB

    • memory/228-1-0x0000000000BA0000-0x0000000000C70000-memory.dmp

      Filesize

      832KB

    • memory/228-5-0x0000000005810000-0x000000000581A000-memory.dmp

      Filesize

      40KB

    • memory/228-6-0x0000000005820000-0x0000000005832000-memory.dmp

      Filesize

      72KB

    • memory/228-7-0x0000000005840000-0x000000000584E000-memory.dmp

      Filesize

      56KB

    • memory/228-0-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/228-14-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/228-2-0x0000000005C30000-0x00000000061D4000-memory.dmp

      Filesize

      5.6MB

    • memory/228-4-0x0000000005880000-0x0000000005890000-memory.dmp

      Filesize

      64KB

    • memory/4516-13-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/4516-19-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

      Filesize

      64KB

    • memory/4516-15-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

      Filesize

      64KB

    • memory/4516-16-0x0000000005290000-0x00000000052F6000-memory.dmp

      Filesize

      408KB

    • memory/4516-17-0x0000000006070000-0x00000000060C0000-memory.dmp

      Filesize

      320KB

    • memory/4516-18-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/4516-10-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB