General

  • Target

    c6ca71a6099738f784dd5d98284f0cbaabfd9c869edcd40f5a307ab937f2a7bb

  • Size

    694KB

  • Sample

    240329-bn4aysec49

  • MD5

    93e133deca5851daeb805df4179f3f7d

  • SHA1

    db3af172e21f93dde8cd1041ac4db458e79120b2

  • SHA256

    c6ca71a6099738f784dd5d98284f0cbaabfd9c869edcd40f5a307ab937f2a7bb

  • SHA512

    6c7c5c90e8add004f1f7971992707027954ca2ba14970c3fcc24b35130782b2303d18d98b1bcea988935d53a877963a636c4d241d6c63c670b4f19ea871bb49b

  • SSDEEP

    12288:l/oc0YOwqOpJkxR17TCR+RVDueQr9w3rFV2fC/S253Kkk5nq7Sdt/A0gvhrdkbza:ygO7SeP7A+vPa63rFVUCT25nq2dgvhZu

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @qk%xm*3

Targets

    • Target

      c6ca71a6099738f784dd5d98284f0cbaabfd9c869edcd40f5a307ab937f2a7bb

    • Size

      694KB

    • MD5

      93e133deca5851daeb805df4179f3f7d

    • SHA1

      db3af172e21f93dde8cd1041ac4db458e79120b2

    • SHA256

      c6ca71a6099738f784dd5d98284f0cbaabfd9c869edcd40f5a307ab937f2a7bb

    • SHA512

      6c7c5c90e8add004f1f7971992707027954ca2ba14970c3fcc24b35130782b2303d18d98b1bcea988935d53a877963a636c4d241d6c63c670b4f19ea871bb49b

    • SSDEEP

      12288:l/oc0YOwqOpJkxR17TCR+RVDueQr9w3rFV2fC/S253Kkk5nq7Sdt/A0gvhrdkbza:ygO7SeP7A+vPa63rFVUCT25nq2dgvhZu

    • 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 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.

    • 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 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

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Tasks