General

  • Target

    PO_001412.doc

  • Size

    445KB

  • Sample

    210504-6jt4bejrys

  • MD5

    7eb650183d4d3a9c79d897d11d54547d

  • SHA1

    7a4f83f1fcacc6402032bdc309dd91d3e36c2549

  • SHA256

    4a97062cd26aaa6430826f03ab22cd25668218b53b34c374e885e5820ee264f2

  • SHA512

    c4ecfe0a6a2a48691278d44a198d2826b7fa5246da9ff2c93086b490e6dbdfcd7ffdc7763c96e8cae9fddefb7633884e02f58a8934f156b44543403e96f4e061

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.phuboatrading-vn.com
  • Port:
    587
  • Username:
    logs@phuboatrading-vn.com
  • Password:
    of2ZCW1li4ipTfyE

Targets

    • Target

      PO_001412.doc

    • Size

      445KB

    • MD5

      7eb650183d4d3a9c79d897d11d54547d

    • SHA1

      7a4f83f1fcacc6402032bdc309dd91d3e36c2549

    • SHA256

      4a97062cd26aaa6430826f03ab22cd25668218b53b34c374e885e5820ee264f2

    • SHA512

      c4ecfe0a6a2a48691278d44a198d2826b7fa5246da9ff2c93086b490e6dbdfcd7ffdc7763c96e8cae9fddefb7633884e02f58a8934f156b44543403e96f4e061

    • AgentTesla

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

    • AgentTesla Payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Exploitation for Client Execution

1
T1203

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Tasks