General

  • Target

    file.exe

  • Size

    7KB

  • Sample

    230203-t5c47sga99

  • MD5

    ca795b83329ed357fc36aa582897e533

  • SHA1

    9c17e6baa805475fb6e297bd0cc8884897abf5e6

  • SHA256

    565157cbfb3324ac9e1f84abcb9d40735eaaef4b3d7a83884dad0132c9cf1f75

  • SHA512

    3882cd9301a0910bdf782284baff3e28be0d583b6ea2624e986232eac7554d5222d80498d09d154049ad0a265ff5bfcc4fbec4aae92e8cb47716fc91f99bd572

  • SSDEEP

    96:istMszkeYx0KfqKXlsZFLQzLALAX5c8aY1LkkXIkvozNt:isdklx0Kf/O/LToEOgi7y

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.bhi.in
  • Port:
    587
  • Username:
    sales@bhi.in
  • Password:
    Sai54231!@#
  • Email To:
    zaritkt@arhitektondizajn.com

Targets

    • Target

      file.exe

    • Size

      7KB

    • MD5

      ca795b83329ed357fc36aa582897e533

    • SHA1

      9c17e6baa805475fb6e297bd0cc8884897abf5e6

    • SHA256

      565157cbfb3324ac9e1f84abcb9d40735eaaef4b3d7a83884dad0132c9cf1f75

    • SHA512

      3882cd9301a0910bdf782284baff3e28be0d583b6ea2624e986232eac7554d5222d80498d09d154049ad0a265ff5bfcc4fbec4aae92e8cb47716fc91f99bd572

    • SSDEEP

      96:istMszkeYx0KfqKXlsZFLQzLALAX5c8aY1LkkXIkvozNt:isdklx0Kf/O/LToEOgi7y

    • AgentTesla

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

    • Detect PureCrypter injector

    • PureCrypter

      PureCrypter is a .NET malware loader first seen in early 2021.

    • Checks computer location settings

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

    • 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

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Tasks