General

  • Target

    Top Urgent_New_Order_PDF.exe

  • Size

    911KB

  • Sample

    210125-ns2k6le5ce

  • MD5

    f71317984e36770287b066803de0ab00

  • SHA1

    15f8bcac4aa7273f362ad1f474bf818ee5179b44

  • SHA256

    ec51e50ebea3906ef87c852c95b256e3948a9bb789981a9dd1fe673d78663e66

  • SHA512

    df2dd89cfdbeb05595e1c676adf3736ae8ebedcd3d1cc6ad6b4ea2f20a0d5fb149cab78d6f29c300eebf9e07c883596e1bc5267a561fed19d429c3f10e6989b9

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.rcsqatar.com
  • Port:
    587
  • Username:
    mj@rcsqatar.com
  • Password:
    Ascent@2019

Targets

    • Target

      Top Urgent_New_Order_PDF.exe

    • Size

      911KB

    • MD5

      f71317984e36770287b066803de0ab00

    • SHA1

      15f8bcac4aa7273f362ad1f474bf818ee5179b44

    • SHA256

      ec51e50ebea3906ef87c852c95b256e3948a9bb789981a9dd1fe673d78663e66

    • SHA512

      df2dd89cfdbeb05595e1c676adf3736ae8ebedcd3d1cc6ad6b4ea2f20a0d5fb149cab78d6f29c300eebf9e07c883596e1bc5267a561fed19d429c3f10e6989b9

    • AgentTesla

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

    • 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.

    • 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.

    • Maps connected drives based on registry

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

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

Tasks