General

  • Target

    05b7c1f979758ed0928e004c8b086eb42b85478872b71ae7918bdec0729643a8.doc

  • Size

    250KB

  • Sample

    231208-bypwbage69

  • MD5

    11223a51b16b9da0f59f190feb0a17f6

  • SHA1

    112e82074909f413be9d8bd1c82592cb5e34c259

  • SHA256

    05b7c1f979758ed0928e004c8b086eb42b85478872b71ae7918bdec0729643a8

  • SHA512

    50ffd7915d5e640afba2a7720105c31d8664ba4b4ab269dc89f7ec806235f652399a0ab05fdfec685fec1222cf4e84cae8488e6ed2144fe32cae4c9cebbf713d

  • SSDEEP

    768:CwAbZSibMX9gRWjtwAbZSibMX9gRWjGu/wzM+MlGqItSIWBjqVlSnRVpdYW:CwAlRkwAlRGYzM+VcjilQDOW

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      05b7c1f979758ed0928e004c8b086eb42b85478872b71ae7918bdec0729643a8.doc

    • Size

      250KB

    • MD5

      11223a51b16b9da0f59f190feb0a17f6

    • SHA1

      112e82074909f413be9d8bd1c82592cb5e34c259

    • SHA256

      05b7c1f979758ed0928e004c8b086eb42b85478872b71ae7918bdec0729643a8

    • SHA512

      50ffd7915d5e640afba2a7720105c31d8664ba4b4ab269dc89f7ec806235f652399a0ab05fdfec685fec1222cf4e84cae8488e6ed2144fe32cae4c9cebbf713d

    • SSDEEP

      768:CwAbZSibMX9gRWjtwAbZSibMX9gRWjGu/wzM+MlGqItSIWBjqVlSnRVpdYW:CwAlRkwAlRGYzM+VcjilQDOW

    • AgentTesla

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

    • 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.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Exploitation for Client Execution

1
T1203

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Tasks