General

  • Target

    b4c5fead3bc308faa465962c0e60d2cdf504f3592065cd3056d74052107a23d6

  • Size

    484KB

  • Sample

    220521-n2a8jshfbm

  • MD5

    1bef1d3d6e5b109dad0264727fa5b874

  • SHA1

    3d9ecca40da449e8692d2cea07a9fc2112191e84

  • SHA256

    b4c5fead3bc308faa465962c0e60d2cdf504f3592065cd3056d74052107a23d6

  • SHA512

    25635affc880b4c7a1918c094faacd2bf2ae54af474e1385da1a459308cd19c47352ff43f8113c6b21f5b64281c4b876b9df04735afd1a0a9fc3efd2aa0da3fa

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    secure231.servconfig.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    eltaefSH6548883

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    secure231.servconfig.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    eltaefSH6548883

Targets

    • Target

      CargoINVpdf.exe

    • Size

      576KB

    • MD5

      fba9f0795fe71e6084df4c58883006a7

    • SHA1

      4bd824d02a93e34814191e20805b79d7759a3095

    • SHA256

      de78d6ebc53d0a17441d132529eb2db65ec206e7f4223382337e190aec29b150

    • SHA512

      4447d064e0e26d4fb8f9b0e299775ba874e9712e0a042d8c3e26130c62caa1faeab61ae9bf863b2006548a7a50b1446b6f11c5e3936a2c303d509985b84a441e

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

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