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Resubmissions

17/11/2023, 19:12

231117-xwf2aaeb6w 10

13/11/2023, 20:48

231113-zlyjpafe33 10

11/11/2023, 00:27

231111-asanrsce88 10

26/10/2023, 01:21

231026-bqq4eaae92 10

17/10/2023, 19:09

231017-xt332ahd24 10

14/10/2023, 18:16

231014-wwjlqsgc23 10

08/10/2023, 21:51

231008-1qgmeagc31 10

03/10/2023, 17:46

231003-wckppaed21 10

General

  • Target

    New Text Document.exe

  • Size

    4KB

  • Sample

    231113-zlyjpafe33

  • MD5

    a239a27c2169af388d4f5be6b52f272c

  • SHA1

    0feb9a0cd8c25f01d071e9b2cfc2ae7bd430318c

  • SHA256

    98e895f711226a32bfab152e224279d859799243845c46e550c2d32153c619fc

  • SHA512

    f30e1ff506cc4d729f7e24aa46e832938a5e21497f1f82f1b300d47f45dae7f1caef032237ef1f5ae9001195c43c0103e3ab787f9196c8397846c1dea8f351da

  • SSDEEP

    48:6r1huik0xzYGJZZJOQOulbfSqXSfbNtm:IIxcLpf6zNt

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.bretoffice.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    }&HF=G!r!_eA

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      New Text Document.exe

    • Size

      4KB

    • MD5

      a239a27c2169af388d4f5be6b52f272c

    • SHA1

      0feb9a0cd8c25f01d071e9b2cfc2ae7bd430318c

    • SHA256

      98e895f711226a32bfab152e224279d859799243845c46e550c2d32153c619fc

    • SHA512

      f30e1ff506cc4d729f7e24aa46e832938a5e21497f1f82f1b300d47f45dae7f1caef032237ef1f5ae9001195c43c0103e3ab787f9196c8397846c1dea8f351da

    • SSDEEP

      48:6r1huik0xzYGJZZJOQOulbfSqXSfbNtm:IIxcLpf6zNt

    • AgentTesla

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

    • Deletes Windows Defender Definitions

      Uses mpcmdrun utility to delete all AV definitions.

    • Detect ZGRat V1

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Downloads MZ/PE file

    • Stops running service(s)

    • .NET Reactor proctector

      Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Uses the VBS compiler for execution

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Legitimate hosting services abused for malware hosting/C2

    • 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 Enterprise v15

Tasks