General

  • Target

    4a0d1259ee7fee098c36fc66fa936e7722e25685ae43dfd7907de583e8829360

  • Size

    385KB

  • Sample

    220701-ez7pasdfg5

  • MD5

    77d66c1dfdeb1692c39f6175e48da8dc

  • SHA1

    b0d98c87e9c3c6c4c32d4dabafd1f6b95d36fcec

  • SHA256

    4a0d1259ee7fee098c36fc66fa936e7722e25685ae43dfd7907de583e8829360

  • SHA512

    d96380a8872f7e0ef0166e537a1e25d354e691171bce72884bf25ce10db3c060f0e99a4dfede930e65a0e40496a8d3050ac8b7fcfc53dbad5f77b0019e25ec54

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.senaussfreezone.com
  • Port:
    587
  • Username:
    hamed@senuessfreezone.com
  • Password:
    Moscow2018

Targets

    • Target

      4a0d1259ee7fee098c36fc66fa936e7722e25685ae43dfd7907de583e8829360

    • Size

      385KB

    • MD5

      77d66c1dfdeb1692c39f6175e48da8dc

    • SHA1

      b0d98c87e9c3c6c4c32d4dabafd1f6b95d36fcec

    • SHA256

      4a0d1259ee7fee098c36fc66fa936e7722e25685ae43dfd7907de583e8829360

    • SHA512

      d96380a8872f7e0ef0166e537a1e25d354e691171bce72884bf25ce10db3c060f0e99a4dfede930e65a0e40496a8d3050ac8b7fcfc53dbad5f77b0019e25ec54

    • AgentTesla

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

    • AgentTesla Payload

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

    • Checks computer location settings

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

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
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