General

  • Target

    1ea26893b98115c9c36c6c1ecb7b4fa28b71ea8dc91f7219c7e54d9f95d4bf8e

  • Size

    809KB

  • Sample

    220521-dxdg1agdh8

  • MD5

    cc5d1ba1b2cd9a126ce8cbc974e01f68

  • SHA1

    f0819d43a4c6fab61ac49829a704db3e9193775f

  • SHA256

    1ea26893b98115c9c36c6c1ecb7b4fa28b71ea8dc91f7219c7e54d9f95d4bf8e

  • SHA512

    2b3220b2229f5cf20eb75c07c51cb3fb4bbaadebf7cb12507fc2c4fa0599833dc504146a0045565a8b7cb60793764f78d573a668c10faed350f1edc43b09bc58

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.50 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 7:02:41 AM MassLogger Started: 5/21/2022 7:02:26 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MassLoggerBinUPDATEProizvodnja.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA

Targets

    • Target

      DHL_AWB #1008936572891_pdf.exe

    • Size

      2.1MB

    • MD5

      3e910208a9f1bf03108895af8671078c

    • SHA1

      6b59a64f11e6559c1354c8097856593469ecd8bc

    • SHA256

      885179565290381c8e8e883f1e4c776507c1ddd3bfa8902f432ea31fbf01c683

    • SHA512

      525ee64a0e0915fa5f35534187c230d3526395ebb42d7c0c68123b9804158d66d0078821c0e7f7a1bf7554322fa28a47d73a6422a7e451fd7dac3062b43dffeb

    • AgentTesla

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

    • MassLogger

      Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

    • MassLogger Main Payload

    • MassLogger log file

      Detects a log file produced by MassLogger.

    • AgentTesla Payload

    • Executes dropped EXE

    • Checks computer location settings

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

    • Drops startup file

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks