General

  • Target

    871ae800103263eba6b125c860687fb668e67eb23fc3bcfb59d93600f31af9de

  • Size

    654KB

  • Sample

    240430-b2vkzage97

  • MD5

    d5221b62d9b6d85f21fdea81c098ce34

  • SHA1

    6bbb11ebc1974d66328bc6fcada5ac6145f39e0e

  • SHA256

    871ae800103263eba6b125c860687fb668e67eb23fc3bcfb59d93600f31af9de

  • SHA512

    2284acbd407269048f304cb4284b4ae68d76a9bcfbb0048028ed23ae0684218590864407e37f6631fe82a706d7c06e9858c6c1864bc97a293fc92457bee40c78

  • SSDEEP

    12288:Zk//MnovU6tdDvEMCW8bxD+i3JgS7yy7jnbIHy4v8:ZuMneU6tdD8NW80pSGy7jnbs8

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      BL_Docs_April29.exe

    • Size

      712KB

    • MD5

      821b50ff336504c74840dc7d66a02a96

    • SHA1

      aaa9215c4fbea8825d1920540639378955e62fa1

    • SHA256

      d92ba5974de2d71b7dade685562677a4bb5727e3456660cebabb084e14b8ad1d

    • SHA512

      4257d2a0a2601aaeeedcb58f561bd1a1bdea587bb4fbd047bc3c1c0a5e7a75c13a891c4f73eceddec2193640680db184cc411c5db0b9f83483d02e8f17e9b2f1

    • SSDEEP

      12288:q+DbgHB778QehnU6tE+NBG90ex9//aTm4ZSXNR/XrRg67yyFjfbNTzLgkR:rgHBIU6tE+q95xt/ay4iXru6GyFjfbNr

    • AgentTesla

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

    • 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

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