General

  • Target

    24c1aaf05d9c072a31960965cf14f2fd6532e03a81afd0dd600e29e0f9f4952f

  • Size

    345KB

  • Sample

    220521-bxezqacfc2

  • MD5

    198ebb1f364369314f5bab25073625f3

  • SHA1

    0d65d69355d4db00f233445990882601be59df49

  • SHA256

    24c1aaf05d9c072a31960965cf14f2fd6532e03a81afd0dd600e29e0f9f4952f

  • SHA512

    6b3d107d0bfed6c2d9ee49743eba550e544b95474e9f3241abe0425222f707af3efbae4a9b85cf7c6d3d70586078038699387defc545348d3651394268e3f236

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    !9aT1sz8?9SqN

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    !9aT1sz8?9SqN

Targets

    • Target

      INV001.exe

    • Size

      433KB

    • MD5

      8653227bbe999935f8e9b088ceb39edc

    • SHA1

      e210a370fd4fcdb72c097c17edef4b5afd726542

    • SHA256

      d09cbb481136d7766db12c79dc6c82fee1eb89056d4e7b8bc989a7a5d38467af

    • SHA512

      bbbbf945176804261628162dd13aa46e010e7ed1c6c46318743c4bbd912ae36ac660e2734d6a03384ff268a4bf12dbf67d1089eefb3e379793685bde90f256b2

    • 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