General

  • Target

    f6eddc163cafa2bbc7d56dfd669678da_JaffaCakes118

  • Size

    877KB

  • Sample

    240418-a3tjmaee6z

  • MD5

    f6eddc163cafa2bbc7d56dfd669678da

  • SHA1

    a0b83d5aae1f5dfd5d30004761b266eb6d3d6cbe

  • SHA256

    ca7c67238fb5574d7bf38ce673e13b7b7e5a7b1cfe834ce1571280e8f824b9e1

  • SHA512

    ef2a9fb20807b3a6ca3f6ea4b1872befc6f979f55b759d96a7eb0426275a45cbedb87e171b09c8adca04540bc79587fb47eed9df2cf2332e160ae20a472924bf

  • SSDEEP

    12288:AwtUbbaAQwLPlytYEbUwKKF/0Mo/Bc38kGKd+ID9AdnKUBm7HB8Q6+PG35VH7mo2:7tUbblTWVrKfpcsZGFk7mo5oFCEkv

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.qwerrrty.us
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    4p(N#wZ]=7T98Hu)

Targets

    • Target

      f6eddc163cafa2bbc7d56dfd669678da_JaffaCakes118

    • Size

      877KB

    • MD5

      f6eddc163cafa2bbc7d56dfd669678da

    • SHA1

      a0b83d5aae1f5dfd5d30004761b266eb6d3d6cbe

    • SHA256

      ca7c67238fb5574d7bf38ce673e13b7b7e5a7b1cfe834ce1571280e8f824b9e1

    • SHA512

      ef2a9fb20807b3a6ca3f6ea4b1872befc6f979f55b759d96a7eb0426275a45cbedb87e171b09c8adca04540bc79587fb47eed9df2cf2332e160ae20a472924bf

    • SSDEEP

      12288:AwtUbbaAQwLPlytYEbUwKKF/0Mo/Bc38kGKd+ID9AdnKUBm7HB8Q6+PG35VH7mo2:7tUbblTWVrKfpcsZGFk7mo5oFCEkv

    • AgentTesla

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

    • AgentTesla payload

    • CustAttr .NET packer

      Detects CustAttr .NET packer in memory.

    • 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.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

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

Email Collection

1
T1114

Tasks