General

  • Target

    4ac88ef7fe497d568f8c0256627f4f28.bin

  • Size

    600KB

  • Sample

    240426-bl5e8sgg31

  • MD5

    87a41cd3abc9638dbb16a32f885d681f

  • SHA1

    311d36fc91c6f9f52f9660b78702d2c52e83ae4b

  • SHA256

    7d4a6f5892c8c888a7909c29c4095580b2737c9aef3e9f96c5ef38c212f06d68

  • SHA512

    481ed1ce87f9a2657d45fd78f433a7a36458c1d64352951b28b49bbb754ecbe44d9c87f89cc07e86ee0cedaae10bd3a4a35b9297bcdc8f2753ed33ccd27e5bdc

  • SSDEEP

    12288:KZ+9VevcYq4ni3oRKA05ksxPZIwt46bQOyD+mPjQVLpZafSZvf:KZKovJq4YRGsvP66bQZD+IQVpvf

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.bonnyriggdentalsurgery.com.au
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Sages101*

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      034a3732828ad09b79a12c66bf7eee3058427808bdae8b19291fffc828ee1fbf.exe

    • Size

      609KB

    • MD5

      4ac88ef7fe497d568f8c0256627f4f28

    • SHA1

      ed66aadb1b165388e5a132f43874f385db546379

    • SHA256

      034a3732828ad09b79a12c66bf7eee3058427808bdae8b19291fffc828ee1fbf

    • SHA512

      b20a18998275e42a27aa56ff0318e2a119b00a5ffee04898e42c25524ee4abf1e68952c97236d4ecafdd143a9912d87f15e463ea3e62ac1bc028e9bbac54fbab

    • SSDEEP

      12288:IxbVNv5uSru57PQFztYF2vLRHQ36D78MmeOZWczK3rlHxsKIy:IxRV5Lru57YF+iQe8MdM0JOy

    • AgentTesla

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

    • UAC bypass

    • Windows security bypass

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Windows security modification

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Looks up external IP address via web service

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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks