General

  • Target

    AWB# 102235516763.exe

  • Size

    525KB

  • Sample

    211203-ve41nscac7

  • MD5

    becb8d72429e5816f294986a1772e1a6

  • SHA1

    d0136b9a5e8443fbdafbd1d97df695f431eb794e

  • SHA256

    27ff4d7994a19e27c347e7794e0e48fa5c66f36e4f27ab407f9044494dd8c5a5

  • SHA512

    a2e8ce769f9ee539700b3e14e524c96690e72f8a06eb9b2b46ed654d3dfdd66bf04d7a12ac3f637f19f8eaf528e3ad8ece3ff4006268ed822a25ef95cee65923

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.demo.jeninfo.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    %e&qapQ3oNkx

Targets

    • Target

      AWB# 102235516763.exe

    • Size

      525KB

    • MD5

      becb8d72429e5816f294986a1772e1a6

    • SHA1

      d0136b9a5e8443fbdafbd1d97df695f431eb794e

    • SHA256

      27ff4d7994a19e27c347e7794e0e48fa5c66f36e4f27ab407f9044494dd8c5a5

    • SHA512

      a2e8ce769f9ee539700b3e14e524c96690e72f8a06eb9b2b46ed654d3dfdd66bf04d7a12ac3f637f19f8eaf528e3ad8ece3ff4006268ed822a25ef95cee65923

    • AgentTesla

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

    • AgentTesla Payload

    • Looks for VirtualBox Guest Additions in registry

    • Drops file in Drivers directory

    • 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.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • 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

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

2
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks