General

  • Target

    Bank Copy.exe

  • Size

    455KB

  • Sample

    230403-gmf2xsee2x

  • MD5

    2d1b7ae625fc27c4a7dd90333be85783

  • SHA1

    bd3a4984c6f9c8d692bed48ca504057fc06e1f31

  • SHA256

    89b26887cf47af7365dfd7fb75252fb86badd55bdc8d87829efd7f63803d1029

  • SHA512

    e96a2a40d84b04cc9c327694ee4e27bf06937a44737cf928ffdb6b63614f50c5cb9f3b2a8c75e691cb4ecd06420a96b7dc77ed0925278dd0deb9fb9cc45315f6

  • SSDEEP

    12288:OuVozphT+QcwZgDRVsq5Luy3izuxwbuEoTrT9Fo:OuVoFhT+TwZRYLueizu33RFo

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      Bank Copy.exe

    • Size

      455KB

    • MD5

      2d1b7ae625fc27c4a7dd90333be85783

    • SHA1

      bd3a4984c6f9c8d692bed48ca504057fc06e1f31

    • SHA256

      89b26887cf47af7365dfd7fb75252fb86badd55bdc8d87829efd7f63803d1029

    • SHA512

      e96a2a40d84b04cc9c327694ee4e27bf06937a44737cf928ffdb6b63614f50c5cb9f3b2a8c75e691cb4ecd06420a96b7dc77ed0925278dd0deb9fb9cc45315f6

    • SSDEEP

      12288:OuVozphT+QcwZgDRVsq5Luy3izuxwbuEoTrT9Fo:OuVoFhT+TwZRYLueizu33RFo

    • AgentTesla

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

    • UAC bypass

    • Windows security bypass

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Windows security modification

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Looks up external IP address via web service

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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Bypass User Account Control

1
T1088

Scheduled Task

1
T1053

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

3
T1089

Modify Registry

5
T1112

Virtualization/Sandbox Evasion

2
T1497

Scripting

1
T1064

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Collection

Email Collection

1
T1114

Tasks