General

  • Target

    SecuriteInfo.com.Trojan.MSIL.Crypt.15644.21198

  • Size

    789KB

  • Sample

    221125-e399labd86

  • MD5

    5b59fdd95ae6f97ce0372e1c5f893911

  • SHA1

    02efe00658f0586dd4e4f74ee519b748155f175c

  • SHA256

    edeb90f2504b6baa926fe916b136109cd1bc6091cb1c0c75e6010cd6f2f73938

  • SHA512

    671f18561b22adcff649077fe26d61603d95df156a3d783f2dfee35c7237546c85b60a084053fa2fad22b7f473b163251bb237682aad690eded3266118cf6cc6

  • SSDEEP

    12288:sc1rKZ/cGktDrxb4cqcOdPzHDFf5piPijSC+mZJbxpDF0EAmD:H1rYytDrxkOsPzJiRC+h

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.deconbrio.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    Aa5nm2gb@kgb.

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.deconbrio.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    Aa5nm2gb@kgb.

Targets

    • Target

      SecuriteInfo.com.Trojan.MSIL.Crypt.15644.21198

    • Size

      789KB

    • MD5

      5b59fdd95ae6f97ce0372e1c5f893911

    • SHA1

      02efe00658f0586dd4e4f74ee519b748155f175c

    • SHA256

      edeb90f2504b6baa926fe916b136109cd1bc6091cb1c0c75e6010cd6f2f73938

    • SHA512

      671f18561b22adcff649077fe26d61603d95df156a3d783f2dfee35c7237546c85b60a084053fa2fad22b7f473b163251bb237682aad690eded3266118cf6cc6

    • SSDEEP

      12288:sc1rKZ/cGktDrxb4cqcOdPzHDFf5piPijSC+mZJbxpDF0EAmD:H1rYytDrxkOsPzJiRC+h

    • 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 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

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks