General

  • Target

    REF00019102021-Order Xls.ace

  • Size

    623KB

  • Sample

    211019-mjvnssgehm

  • MD5

    ff462f425aea9e595e99070405ff8877

  • SHA1

    1c468c6c24be1ed44bc2f10aa29121f987b6a2a9

  • SHA256

    7bfd2cfa3a2eeebe9590da5d446dda0bbb12928096e0891f0c5e8b3c5a6a6ffb

  • SHA512

    b52b6e1f24a2dfa4e426fe417e474dcb3042b3583ca051486123c74cb071d262fe1c69351fb383fb8ad104e5278dcc946f6729f8e48a120093b28ef795419d47

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mmdqatar.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    172.93.148.185

Targets

    • Target

      REF00019102021-Order Xls.exe

    • Size

      1.0MB

    • MD5

      428be499d18400fb8a92b1d5bdf4bcc1

    • SHA1

      3e05b6c8b3c5f6d752ef26ee4472bf75c86aef99

    • SHA256

      c4144b07c23720baefa5ff9c9ca78438199544ecd20bc2df227fc361c9e5c935

    • SHA512

      a32681aeda4884508d2e71a636dbf9df200ba77f40341bd83d654fc0f6982054a55e1ea59491b319bd3c02b1712f4def7f52a57d01d6a155c7995b43fe26a0f9

    • 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.

    • 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