General

  • Target

    df9cda22adcc6f050ef0efcf8e93248b254d4708a2616b08531911d10b2a1eb1.exe

  • Size

    660KB

  • Sample

    240522-cypqzshd98

  • MD5

    151f30a098966d3382974b7d05ced991

  • SHA1

    42ad172a0d55c1e71affa18aef0cb9d3d15505f9

  • SHA256

    df9cda22adcc6f050ef0efcf8e93248b254d4708a2616b08531911d10b2a1eb1

  • SHA512

    475d34b9b28011ed85ca84f43da114c080e132b09c5237eb793f6a4cf233eb6460077006dcdd50cddf0de1e33fcc307d4ee9830617711b5f5fb4f5d3630ecde4

  • SSDEEP

    12288:MlYifT4uJoZ0Ez3riLoZZPRi5N1R/XajuYNSdWzkvmvp4HzYUsWKnvrAkW6mg:biVJ80Ezb2oZZPoySgRgmvJUsWcvrAk+

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      df9cda22adcc6f050ef0efcf8e93248b254d4708a2616b08531911d10b2a1eb1.exe

    • Size

      660KB

    • MD5

      151f30a098966d3382974b7d05ced991

    • SHA1

      42ad172a0d55c1e71affa18aef0cb9d3d15505f9

    • SHA256

      df9cda22adcc6f050ef0efcf8e93248b254d4708a2616b08531911d10b2a1eb1

    • SHA512

      475d34b9b28011ed85ca84f43da114c080e132b09c5237eb793f6a4cf233eb6460077006dcdd50cddf0de1e33fcc307d4ee9830617711b5f5fb4f5d3630ecde4

    • SSDEEP

      12288:MlYifT4uJoZ0Ez3riLoZZPRi5N1R/XajuYNSdWzkvmvp4HzYUsWKnvrAkW6mg:biVJ80Ezb2oZZPoySgRgmvJUsWcvrAk+

    • AgentTesla

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

    • Detect packed .NET executables. Mostly AgentTeslaV4.

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

    • 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

    • Command and Scripting Interpreter: PowerShell

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

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Tasks