General

  • Target

    Reservation_pdf.exe

  • Size

    2.2MB

  • Sample

    221206-kbn5yadd5t

  • MD5

    f44f90fdeb4912a220e1013cd12d91da

  • SHA1

    d6cb59a9021f088be40af8d8fc2a3d8ba8a3dee9

  • SHA256

    d61c1f3b23d6ba77364c697d47062ba184113c1c20d3f46b6d629019bc05611a

  • SHA512

    7033ffed0e9ae5ecc6b824759e24726125a6d807c8f5d15c221c826c8dcafef85c71ddefb6f59e8fdd830f5555e16421b49f7bdeeda63cc5ae88a8eef7d65c48

  • SSDEEP

    49152:EUI0R4f9Xm2uxyR2oSML0EdsE9uRGATTAJzyYBvX+tv2IXkAX:EUPUk2uYRA2HdsCgGAvAcY1X+teI7

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.cimarcochin.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Kelechikelechi1@

Targets

    • Target

      Reservation_pdf.exe

    • Size

      2.2MB

    • MD5

      f44f90fdeb4912a220e1013cd12d91da

    • SHA1

      d6cb59a9021f088be40af8d8fc2a3d8ba8a3dee9

    • SHA256

      d61c1f3b23d6ba77364c697d47062ba184113c1c20d3f46b6d629019bc05611a

    • SHA512

      7033ffed0e9ae5ecc6b824759e24726125a6d807c8f5d15c221c826c8dcafef85c71ddefb6f59e8fdd830f5555e16421b49f7bdeeda63cc5ae88a8eef7d65c48

    • SSDEEP

      49152:EUI0R4f9Xm2uxyR2oSML0EdsE9uRGATTAJzyYBvX+tv2IXkAX:EUPUk2uYRA2HdsCgGAvAcY1X+teI7

    • 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

Persistence

Registry Run Keys / Startup Folder

1
T1060

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