General

  • Target

    figg.exe

  • Size

    56KB

  • Sample

    210120-x33vd5r58s

  • MD5

    dfd545dbc01cac5d86f94dd0a3c8d675

  • SHA1

    86b077d904d1f9bbb11d897a78e38924a421e0e8

  • SHA256

    5defd50046db301c82c85cc8306960982f576cbf5446f24062cc570dcf0becec

  • SHA512

    72d3f60e21187b9feb34a28fe4464bbc54e6fbf3c329476657d8a4a89ad2ce632223f2a1226af0488f7ceeda7c3c836288de9110a0868042670c7e74e61a01b7

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    noor.akbari@petrolnas.icu
  • Password:
    @Mexico1.,

Targets

    • Target

      figg.exe

    • Size

      56KB

    • MD5

      dfd545dbc01cac5d86f94dd0a3c8d675

    • SHA1

      86b077d904d1f9bbb11d897a78e38924a421e0e8

    • SHA256

      5defd50046db301c82c85cc8306960982f576cbf5446f24062cc570dcf0becec

    • SHA512

      72d3f60e21187b9feb34a28fe4464bbc54e6fbf3c329476657d8a4a89ad2ce632223f2a1226af0488f7ceeda7c3c836288de9110a0868042670c7e74e61a01b7

    • AgentTesla

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

    • Modifies WinLogon for persistence

    • Modifies Windows Defender Real-time Protection settings

    • Turns off Windows Defender SpyNet reporting

    • Windows security bypass

    • AgentTesla Payload

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Drops startup file

    • 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

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

6
T1112

Disabling Security Tools

4
T1089

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Command and Control

Web Service

1
T1102

Tasks