Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/06/2024, 14:26

General

  • Target

    MV TBN_VLS's DETAILS.xls.scr

  • Size

    701KB

  • MD5

    f837b18ae77cf2e191972bc723ee5ebc

  • SHA1

    31f548b020ff5c73957dc74fc702574322e658c8

  • SHA256

    28e686d3d4c2ca997fdabbfb88c07afc77920015217bd22d82f7b08334010044

  • SHA512

    2203198e130abcfbae21c280512705cdc94352d5a3324fa1dd372caa5ad661c262c4f358a142e43e4d6603a079de5b851e5ea5e0d97abe95114b18d19e162312

  • SSDEEP

    12288:PbxdKt/rFfa7FpQpWc8nNZQuGu8Qs7cyytHeVA4sas66mBHu8ecI2:zjKN5i7XQ8c8n0xdcyyQ1F72N2

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    beirutrest.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    9yXQ39wz(uL+

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://beirutrest.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    9yXQ39wz(uL+

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.

  • 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 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\MV TBN_VLS's DETAILS.xls.scr
    "C:\Users\Admin\AppData\Local\Temp\MV TBN_VLS's DETAILS.xls.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4664
    • C:\Users\Admin\AppData\Local\Temp\MV TBN_VLS's DETAILS.xls.scr
      "C:\Users\Admin\AppData\Local\Temp\MV TBN_VLS's DETAILS.xls.scr"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4116
  • 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=4472 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:392

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/4116-11-0x0000000000400000-0x0000000000440000-memory.dmp

            Filesize

            256KB

          • memory/4116-20-0x0000000074D90000-0x0000000075540000-memory.dmp

            Filesize

            7.7MB

          • memory/4116-19-0x0000000074D90000-0x0000000075540000-memory.dmp

            Filesize

            7.7MB

          • memory/4116-18-0x00000000064A0000-0x00000000064F0000-memory.dmp

            Filesize

            320KB

          • memory/4116-16-0x0000000004F60000-0x0000000004FC6000-memory.dmp

            Filesize

            408KB

          • memory/4116-15-0x0000000074D90000-0x0000000075540000-memory.dmp

            Filesize

            7.7MB

          • memory/4116-13-0x0000000074D90000-0x0000000075540000-memory.dmp

            Filesize

            7.7MB

          • memory/4664-5-0x0000000004B80000-0x0000000004B8A000-memory.dmp

            Filesize

            40KB

          • memory/4664-8-0x0000000007C00000-0x0000000007C10000-memory.dmp

            Filesize

            64KB

          • memory/4664-9-0x0000000007C40000-0x0000000007CC2000-memory.dmp

            Filesize

            520KB

          • memory/4664-10-0x000000000A4B0000-0x000000000A54C000-memory.dmp

            Filesize

            624KB

          • memory/4664-7-0x0000000007BE0000-0x0000000007BEE000-memory.dmp

            Filesize

            56KB

          • memory/4664-12-0x0000000074D9E000-0x0000000074D9F000-memory.dmp

            Filesize

            4KB

          • memory/4664-6-0x0000000007BB0000-0x0000000007BC6000-memory.dmp

            Filesize

            88KB

          • memory/4664-0-0x0000000074D9E000-0x0000000074D9F000-memory.dmp

            Filesize

            4KB

          • memory/4664-4-0x0000000074D90000-0x0000000075540000-memory.dmp

            Filesize

            7.7MB

          • memory/4664-17-0x0000000074D90000-0x0000000075540000-memory.dmp

            Filesize

            7.7MB

          • memory/4664-3-0x0000000004C10000-0x0000000004CA2000-memory.dmp

            Filesize

            584KB

          • memory/4664-2-0x00000000051C0000-0x0000000005764000-memory.dmp

            Filesize

            5.6MB

          • memory/4664-1-0x00000000000C0000-0x0000000000176000-memory.dmp

            Filesize

            728KB