General

  • Target

    Bank report.zip

  • Size

    520KB

  • Sample

    220923-h8dz5adea3

  • MD5

    4eda4bc3c7728f94ee818ef63d5483cf

  • SHA1

    5df98f52432dd0bb82b16a5430e5986784b897a8

  • SHA256

    e4ec7bc638a2f16ea086b9108a89c2079a6a47b8360438a3e8ee705a0aac890f

  • SHA512

    d7342e1ec81d454f8ab4f370ee13144c1bc0c365635b79ce60da84efc2525281dd74aafd8c71f4de5c5d07bd333c784d796e3dcc8e417bb8f0804f52106b4a2e

  • SSDEEP

    12288:hV7tgIcwWLZiDHEwkyz1Hz4oKU/riPlZLDcEeRoVFqDpm67y:jJgI5/11TzHTiPlZ3de8QDpm3

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.gci-india.com
  • Port:
    587
  • Username:
    enquiry@gci-india.com
  • Password:
    G?UdDC.PX%)C

Targets

    • Target

      Bank report.exe

    • Size

      659KB

    • MD5

      f6d2d6d8d20e922611fd0b8418f5f900

    • SHA1

      6d7bf4333f141522baf1573d42a68be646059436

    • SHA256

      e74b2fe194c740ba577cd9c89e5a5b83d0b312c3c1ed08754b3c07339d2fd9a0

    • SHA512

      a9cc4cdb2f8dfe3eaee43a78e769e4cd6e26ea78ee806cd679bb56d5b11ec851c80e3ff5b46fa5d2d5e21cb5501648b1a0175df0b58032145b856da855651d25

    • SSDEEP

      12288:Xf2iNGlylSx1Z3Eosyltlze4KU/FiFjPLDU0LnADqjJ5nzvG:P1gbzthbH9iFjP3zTjrzvG

    • AgentTesla

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

    • Drops file in Drivers directory

    • 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

    • 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