General

  • Target

    PO_10032885_Mahler-Besse_2_16_2020_1207.xls.xlsm

  • Size

    137KB

  • Sample

    200731-71x3l3tslx

  • MD5

    2cb0d10d142dcee0d4f941ee11492746

  • SHA1

    ecaf75e4135bb8f585ce31249d3284871dc4d042

  • SHA256

    191c3798be77e205711c854c27a25152dcc6185858f95e404ad71fd34c7214ef

  • SHA512

    9299a052bf6a32c2bc1edc91a14d38b9b80dcb78596a1190db1175ab8738d2f55b6879f127129d758e0ec9ce7879717f0fab59a87fa70b10f3c4948408a1c7c1

Malware Config

Targets

    • Target

      PO_10032885_Mahler-Besse_2_16_2020_1207.xls.xlsm

    • Size

      137KB

    • MD5

      2cb0d10d142dcee0d4f941ee11492746

    • SHA1

      ecaf75e4135bb8f585ce31249d3284871dc4d042

    • SHA256

      191c3798be77e205711c854c27a25152dcc6185858f95e404ad71fd34c7214ef

    • SHA512

      9299a052bf6a32c2bc1edc91a14d38b9b80dcb78596a1190db1175ab8738d2f55b6879f127129d758e0ec9ce7879717f0fab59a87fa70b10f3c4948408a1c7c1

    • AgentTesla

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

    • AgentTesla Payload

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Adds Run key to start application

    • 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

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Tasks