General

  • Target

    0AX4532QWSA.xlsx

  • Size

    1.3MB

  • Sample

    210113-tc28lc84ka

  • MD5

    9b4eeaed62b4b0253a7a3205f771099d

  • SHA1

    e7340dd8904b13bf4dbf842c56479ffdb969287c

  • SHA256

    9bbe5843787cdc023cff31aaa88ce4b91e52e013d5e4b543323b7eea2f5f51d3

  • SHA512

    14f539709d5a6a0312bae5a236326812b5bbf9af34b555764c937a3095bd14e689c04f5d95e94b2a118eca42173295cec92779f6688a6e4e8d6b4a49e0deff0e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.gammavilla.org
  • Port:
    587
  • Username:
    info@gammavilla.org
  • Password:
    county2018

Targets

    • Target

      0AX4532QWSA.xlsx

    • Size

      1.3MB

    • MD5

      9b4eeaed62b4b0253a7a3205f771099d

    • SHA1

      e7340dd8904b13bf4dbf842c56479ffdb969287c

    • SHA256

      9bbe5843787cdc023cff31aaa88ce4b91e52e013d5e4b543323b7eea2f5f51d3

    • SHA512

      14f539709d5a6a0312bae5a236326812b5bbf9af34b555764c937a3095bd14e689c04f5d95e94b2a118eca42173295cec92779f6688a6e4e8d6b4a49e0deff0e

    • AgentTesla

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

    • AgentTesla Payload

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Uses the VBS compiler for execution

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Exploitation for Client Execution

1
T1203

Defense Evasion

Scripting

1
T1064

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Tasks