General

  • Target

    RFQ-PR# PR1787523 (BA).doc.exe

  • Size

    456KB

  • Sample

    201109-3cheym4ala

  • MD5

    cb2758f854fcd3e6d4eff297aba1079e

  • SHA1

    c8258ff8ff5e94d3026a50cd56f399aa6a388043

  • SHA256

    82d3edc9ad7ba25feca5ef08641b0f030d92faa5dec17f3148e062b727a0240c

  • SHA512

    99c62b161ca7231b40b689d6db910aaaa57e608e7bf414650e451be503030f26a248a03e35855ac04a3beaff426f6044b18b3008044a4c26c9d14ec1d54528fb

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.toorsteel.com
  • Port:
    587
  • Username:
    planning@toorsteel.com
  • Password:
    6652372

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.toorsteel.com
  • Port:
    587
  • Username:
    planning@toorsteel.com
  • Password:
    6652372

Targets

    • Target

      RFQ-PR# PR1787523 (BA).doc.exe

    • Size

      456KB

    • MD5

      cb2758f854fcd3e6d4eff297aba1079e

    • SHA1

      c8258ff8ff5e94d3026a50cd56f399aa6a388043

    • SHA256

      82d3edc9ad7ba25feca5ef08641b0f030d92faa5dec17f3148e062b727a0240c

    • SHA512

      99c62b161ca7231b40b689d6db910aaaa57e608e7bf414650e451be503030f26a248a03e35855ac04a3beaff426f6044b18b3008044a4c26c9d14ec1d54528fb

    • AgentTesla

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

    • Modifies Windows Defender Real-time Protection settings

    • AgentTesla Payload

    • rezer0

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

    • 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.

    • Windows security modification

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

3
T1112

Disabling Security Tools

2
T1089

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Tasks