General

  • Target

    Swift_Confirmation_Copy_PDF.exe

  • Size

    635KB

  • Sample

    221001-a6n4bagbhp

  • MD5

    8f8997c46d2e2d5bacace89ddc5b98ea

  • SHA1

    42936ce414491a0bdf4363e028e9acc809904828

  • SHA256

    0e6d1760c730846071dff47ea51828caf0108d9dd72f472e0a29b7f06c880955

  • SHA512

    fba79b3893726c6160f3d8cde09daf562dba7f6fd7de20575ab21093cc4effa93cb8de5638db56e6fc9fdc9419320cae5ae5d993465b48d3bd0ab23107efaa20

  • SSDEEP

    12288:KP2ezBnLOkPRxliW1PjiZj5C23orXRU7uIjV8uqFgfjPe4lRvsc8ZR301P:y2exikPRrhGZjY24KNjuRWfFR

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1923344551:AAGJ9MeV4yHipzEdvvxVuepm8PFUNaCZez4/sendDocument

Targets

    • Target

      Swift_Confirmation_Copy_PDF.exe

    • Size

      635KB

    • MD5

      8f8997c46d2e2d5bacace89ddc5b98ea

    • SHA1

      42936ce414491a0bdf4363e028e9acc809904828

    • SHA256

      0e6d1760c730846071dff47ea51828caf0108d9dd72f472e0a29b7f06c880955

    • SHA512

      fba79b3893726c6160f3d8cde09daf562dba7f6fd7de20575ab21093cc4effa93cb8de5638db56e6fc9fdc9419320cae5ae5d993465b48d3bd0ab23107efaa20

    • SSDEEP

      12288:KP2ezBnLOkPRxliW1PjiZj5C23orXRU7uIjV8uqFgfjPe4lRvsc8ZR301P:y2exikPRrhGZjY24KNjuRWfFR

    • AgentTesla

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

    • 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.

    • Checks computer location settings

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

    • 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

    • 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

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks