General

  • Target

    abd261879ff1611f42e267980489b5b90cc5d8f1e8317fb118b58d9bc15a1db5

  • Size

    282KB

  • Sample

    220521-nrbrbsead7

  • MD5

    5b1b28b04412ad1d949e3cb70a7483ee

  • SHA1

    02190bed36fc1fce02e3d2ffdee381062c7ba286

  • SHA256

    abd261879ff1611f42e267980489b5b90cc5d8f1e8317fb118b58d9bc15a1db5

  • SHA512

    24ab122f1195556c9e1a8e1ab7f7c395fa3e15765b6d21f7fb5e32286d0d3da1c240c464cead5781aa80e26e82e4bb59a38894cb762c95daf48e5a2448bdf9e8

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    realmen2020@yandex.ru
  • Password:
    zS8ZQ88MrxAbUtE

Targets

    • Target

      PO20200716-July.pif

    • Size

      666KB

    • MD5

      32b3a0cf4205e5e48691c110aa082d1e

    • SHA1

      4ec9cce9ec3a012e53e9b116d40f7506c4632e14

    • SHA256

      95cc09bf84b557baa4ce240a6034d1169e12f4268bf9041c4116f149f7603afe

    • SHA512

      29d351454db9aa84a18704659f89ffa148df0fa5483f4ad2a9e127411862eddad35a073ab1d6feb2c3e00a746f063cdd12972259d5600700994f827819721639

    • AgentTesla

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

    • AgentTesla Payload

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

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