General

  • Target

    0d23cb796416bcf04260bdf9d1eef9300de08fff1da13a181c57d065d98bdfae.exe

  • Size

    604KB

  • Sample

    240430-bejj7aff37

  • MD5

    7ddd5227ec23c776e1ad950e60eb37ca

  • SHA1

    7e0c332beb86a7d011e13ede52a77cbfa25740c0

  • SHA256

    0d23cb796416bcf04260bdf9d1eef9300de08fff1da13a181c57d065d98bdfae

  • SHA512

    08c0d3db1462cbf9961bd0f7ba2dda8eba5f907d742e04453c7f87de17c4b036255d6af66028b1726073db55a068cc7f1eb51e59ff8dbf9c4cd3c1329fb0cba3

  • SSDEEP

    12288:7Simbs5M7iO9sV5+JrfeWJm86J6gBh7ta8oZQPid2j9f:7VmbYMr9sYrWB86J6gfM8oZQc2jR

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      0d23cb796416bcf04260bdf9d1eef9300de08fff1da13a181c57d065d98bdfae.exe

    • Size

      604KB

    • MD5

      7ddd5227ec23c776e1ad950e60eb37ca

    • SHA1

      7e0c332beb86a7d011e13ede52a77cbfa25740c0

    • SHA256

      0d23cb796416bcf04260bdf9d1eef9300de08fff1da13a181c57d065d98bdfae

    • SHA512

      08c0d3db1462cbf9961bd0f7ba2dda8eba5f907d742e04453c7f87de17c4b036255d6af66028b1726073db55a068cc7f1eb51e59ff8dbf9c4cd3c1329fb0cba3

    • SSDEEP

      12288:7Simbs5M7iO9sV5+JrfeWJm86J6gBh7ta8oZQPid2j9f:7VmbYMr9sYrWB86J6gfM8oZQc2jR

    • AgentTesla

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

    • UAC bypass

    • Windows security bypass

    • Detect packed .NET executables. Mostly AgentTeslaV4.

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables packed with or use KoiVM

    • Detects executables referencing Windows vault credential objects. Observed in infostealers

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • Detects executables referencing many file transfer clients. Observed in information stealers

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

3
T1562

Disable or Modify Tools

3
T1562.001

Modify Registry

5
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

4
T1005

Tasks