Analysis

  • max time kernel
    134s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-06-2024 01:42

General

  • Target

    OUTSTANDING INVOICE_PDF.exe

  • Size

    711KB

  • MD5

    1e3e1d598639d5d9d86e73c4549fea19

  • SHA1

    2a73816f13b46576ebb614a6570880c51d4104ea

  • SHA256

    2f2a5b335c8f2004e20a98d574c4c39a952d0eadecf8d035f60f941abcb8a436

  • SHA512

    4cbaa477e7f6fbce010e47b4ccea27403435dc971714702ce08de2100b89d9ac2c77c8a8106828410fac6d0deeaf90fc9d6d0bb308b3b722063a33b3feab50c5

  • SSDEEP

    12288:IBTKt/rFfaxdAZrnBDcLguCvpTkbbIyX8OA7OZeK5hzof8gbXv3S/IHXEaTk7pYl:uKN5i/AZrBDvvpTzyX/ZeK59gzv3WOxF

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.deblokhoeve.be
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Blokhoeve2490.i

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\OUTSTANDING INVOICE_PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\OUTSTANDING INVOICE_PDF.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:952
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xTBpCPBoAPCxb.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3780
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xTBpCPBoAPCxb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9078.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1428
    • C:\Users\Admin\AppData\Local\Temp\OUTSTANDING INVOICE_PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\OUTSTANDING INVOICE_PDF.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:532

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bu5zxlhh.rsu.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp9078.tmp

    Filesize

    1KB

    MD5

    9776e44327c20f1ac0547175643e37f0

    SHA1

    941129760a142e9628f2160734afd19c1aa037e2

    SHA256

    48b9d8bc00fc7ee1b5cebd400e43c842252e1e00737bdbb97555f05ee82dfcb5

    SHA512

    8aab0e65cb4e5f81088c6ba5eb9b8dd68f810596d14a999d870da1bd5975c429bb351d09481571b512e1fa2d88c7e7b74808c437fb387f5fd6cd921cd76f86c2

  • memory/532-70-0x00000000750E0000-0x0000000075890000-memory.dmp

    Filesize

    7.7MB

  • memory/532-26-0x00000000750E0000-0x0000000075890000-memory.dmp

    Filesize

    7.7MB

  • memory/532-27-0x0000000005400000-0x0000000005466000-memory.dmp

    Filesize

    408KB

  • memory/532-21-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/532-30-0x00000000750E0000-0x0000000075890000-memory.dmp

    Filesize

    7.7MB

  • memory/532-60-0x0000000006950000-0x00000000069A0000-memory.dmp

    Filesize

    320KB

  • memory/952-5-0x00000000750E0000-0x0000000075890000-memory.dmp

    Filesize

    7.7MB

  • memory/952-10-0x0000000007C60000-0x0000000007CFC000-memory.dmp

    Filesize

    624KB

  • memory/952-9-0x0000000007A10000-0x0000000007A96000-memory.dmp

    Filesize

    536KB

  • memory/952-16-0x00000000750EE000-0x00000000750EF000-memory.dmp

    Filesize

    4KB

  • memory/952-7-0x0000000006280000-0x000000000628E000-memory.dmp

    Filesize

    56KB

  • memory/952-8-0x00000000062A0000-0x00000000062B0000-memory.dmp

    Filesize

    64KB

  • memory/952-6-0x0000000005260000-0x0000000005276000-memory.dmp

    Filesize

    88KB

  • memory/952-0-0x00000000750EE000-0x00000000750EF000-memory.dmp

    Filesize

    4KB

  • memory/952-4-0x0000000004D90000-0x0000000004D9A000-memory.dmp

    Filesize

    40KB

  • memory/952-3-0x0000000004CC0000-0x0000000004D52000-memory.dmp

    Filesize

    584KB

  • memory/952-2-0x0000000005270000-0x0000000005814000-memory.dmp

    Filesize

    5.6MB

  • memory/952-25-0x00000000750E0000-0x0000000075890000-memory.dmp

    Filesize

    7.7MB

  • memory/952-1-0x0000000000220000-0x00000000002D8000-memory.dmp

    Filesize

    736KB

  • memory/3780-28-0x0000000004E30000-0x0000000004E52000-memory.dmp

    Filesize

    136KB

  • memory/3780-56-0x0000000006D20000-0x0000000006DC3000-memory.dmp

    Filesize

    652KB

  • memory/3780-24-0x00000000750E0000-0x0000000075890000-memory.dmp

    Filesize

    7.7MB

  • memory/3780-20-0x00000000750E0000-0x0000000075890000-memory.dmp

    Filesize

    7.7MB

  • memory/3780-19-0x00000000750E0000-0x0000000075890000-memory.dmp

    Filesize

    7.7MB

  • memory/3780-36-0x0000000005700000-0x0000000005A54000-memory.dmp

    Filesize

    3.3MB

  • memory/3780-41-0x0000000005D10000-0x0000000005D2E000-memory.dmp

    Filesize

    120KB

  • memory/3780-42-0x00000000062B0000-0x00000000062FC000-memory.dmp

    Filesize

    304KB

  • memory/3780-44-0x0000000006CE0000-0x0000000006D12000-memory.dmp

    Filesize

    200KB

  • memory/3780-45-0x0000000070D60000-0x0000000070DAC000-memory.dmp

    Filesize

    304KB

  • memory/3780-55-0x0000000006260000-0x000000000627E000-memory.dmp

    Filesize

    120KB

  • memory/3780-29-0x0000000005620000-0x0000000005686000-memory.dmp

    Filesize

    408KB

  • memory/3780-58-0x0000000007030000-0x000000000704A000-memory.dmp

    Filesize

    104KB

  • memory/3780-57-0x0000000007670000-0x0000000007CEA000-memory.dmp

    Filesize

    6.5MB

  • memory/3780-59-0x00000000070A0000-0x00000000070AA000-memory.dmp

    Filesize

    40KB

  • memory/3780-18-0x0000000004E80000-0x00000000054A8000-memory.dmp

    Filesize

    6.2MB

  • memory/3780-61-0x00000000072B0000-0x0000000007346000-memory.dmp

    Filesize

    600KB

  • memory/3780-62-0x0000000007230000-0x0000000007241000-memory.dmp

    Filesize

    68KB

  • memory/3780-63-0x0000000007260000-0x000000000726E000-memory.dmp

    Filesize

    56KB

  • memory/3780-64-0x0000000007270000-0x0000000007284000-memory.dmp

    Filesize

    80KB

  • memory/3780-65-0x0000000007370000-0x000000000738A000-memory.dmp

    Filesize

    104KB

  • memory/3780-66-0x0000000007350000-0x0000000007358000-memory.dmp

    Filesize

    32KB

  • memory/3780-69-0x00000000750E0000-0x0000000075890000-memory.dmp

    Filesize

    7.7MB

  • memory/3780-15-0x0000000002420000-0x0000000002456000-memory.dmp

    Filesize

    216KB