Analysis

  • max time kernel
    139s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/10/2023, 07:53

General

  • Target

    LJl86VfF8Y8HwLL.exe

  • Size

    656KB

  • MD5

    4dabc7d8db7be86a8fa3afdbb9963025

  • SHA1

    9084477d8ed0a2c4fa0d5a601e26309aa082ca44

  • SHA256

    a393a7c0bcd606e0e4441cf58d1dab63b57e6cedb02fcc72a0a78d273e2b29b5

  • SHA512

    d9d86085ce1c3951c4938c7523714350104744d5358dbec791bcb0aad2a9d9e4615ef5ed0032f280cd3e5c20a5dbd9974d413ff9d4586cc37f84d8b0d1e001c3

  • SSDEEP

    12288:IDDJ92IWiN9ELwSEgSiWX06CIWcQ1rJvT8IjyASJihcbvvWKLB:s/e499SbxW06C3duAxOb+g

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.wirtschaftsinkaso.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    BnW##21t

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\LJl86VfF8Y8HwLL.exe
    "C:\Users\Admin\AppData\Local\Temp\LJl86VfF8Y8HwLL.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4464
    • C:\Users\Admin\AppData\Local\Temp\LJl86VfF8Y8HwLL.exe
      "C:\Users\Admin\AppData\Local\Temp\LJl86VfF8Y8HwLL.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4564

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\LJl86VfF8Y8HwLL.exe.log

          Filesize

          1KB

          MD5

          8ec831f3e3a3f77e4a7b9cd32b48384c

          SHA1

          d83f09fd87c5bd86e045873c231c14836e76a05c

          SHA256

          7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

          SHA512

          26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

        • memory/4464-10-0x0000000006020000-0x0000000006030000-memory.dmp

          Filesize

          64KB

        • memory/4464-12-0x0000000008B10000-0x0000000008BAC000-memory.dmp

          Filesize

          624KB

        • memory/4464-3-0x0000000004C30000-0x0000000004CC2000-memory.dmp

          Filesize

          584KB

        • memory/4464-4-0x0000000004BA0000-0x0000000004BB0000-memory.dmp

          Filesize

          64KB

        • memory/4464-5-0x0000000004CE0000-0x0000000004CEA000-memory.dmp

          Filesize

          40KB

        • memory/4464-6-0x00000000051B0000-0x00000000051CE000-memory.dmp

          Filesize

          120KB

        • memory/4464-7-0x0000000074D30000-0x00000000754E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4464-8-0x0000000004BA0000-0x0000000004BB0000-memory.dmp

          Filesize

          64KB

        • memory/4464-9-0x0000000006010000-0x000000000601C000-memory.dmp

          Filesize

          48KB

        • memory/4464-0-0x0000000074D30000-0x00000000754E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4464-2-0x00000000051E0000-0x0000000005784000-memory.dmp

          Filesize

          5.6MB

        • memory/4464-18-0x0000000074D30000-0x00000000754E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4464-11-0x00000000064B0000-0x000000000652C000-memory.dmp

          Filesize

          496KB

        • memory/4464-1-0x0000000000190000-0x000000000023A000-memory.dmp

          Filesize

          680KB

        • memory/4564-16-0x0000000074D30000-0x00000000754E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4564-17-0x0000000004DD0000-0x0000000004DE0000-memory.dmp

          Filesize

          64KB

        • memory/4564-13-0x0000000000400000-0x0000000000444000-memory.dmp

          Filesize

          272KB

        • memory/4564-19-0x0000000004F30000-0x0000000004F96000-memory.dmp

          Filesize

          408KB

        • memory/4564-22-0x0000000006450000-0x00000000064A0000-memory.dmp

          Filesize

          320KB

        • memory/4564-23-0x0000000074D30000-0x00000000754E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4564-24-0x0000000004DD0000-0x0000000004DE0000-memory.dmp

          Filesize

          64KB