General

  • Target

    download.exe

  • Size

    573KB

  • Sample

    241201-zqnv2s1qav

  • MD5

    0736a06129c779dc95998a5fe63f5c6e

  • SHA1

    f2c0f5b585630913ef20f4a3ddfdfce53cb8f954

  • SHA256

    920e72d0fc07a2a463de347234d4264b10d99acc24cc801badc734fa2ef53c12

  • SHA512

    59ddf0711a7dbe9925150b03b570d5b5addb599d65bc79a625bd03683228936ec26f4a936e42e2b6fb40427fe222658683ce42ee021122d263300aede48e6a8a

  • SSDEEP

    12288:0NFry554mkRmAAUEyJjfWYeXzky7Ey4I9XHoWmpvA32hHFp:EFrO54FYAAURJbVIzRHov/p

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      download.exe

    • Size

      573KB

    • MD5

      0736a06129c779dc95998a5fe63f5c6e

    • SHA1

      f2c0f5b585630913ef20f4a3ddfdfce53cb8f954

    • SHA256

      920e72d0fc07a2a463de347234d4264b10d99acc24cc801badc734fa2ef53c12

    • SHA512

      59ddf0711a7dbe9925150b03b570d5b5addb599d65bc79a625bd03683228936ec26f4a936e42e2b6fb40427fe222658683ce42ee021122d263300aede48e6a8a

    • SSDEEP

      12288:0NFry554mkRmAAUEyJjfWYeXzky7Ey4I9XHoWmpvA32hHFp:EFrO54FYAAURJbVIzRHov/p

    • AgentTesla

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

    • Agenttesla family

    • UAC bypass

    • Windows security bypass

    • Looks for VirtualBox Guest Additions in registry

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • 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 WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • 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

    • Checks whether UAC is enabled

    • Maps connected drives based on registry

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks