General

  • Target

    d16c23015e1e8c42aaf428c4d375c9780ff1b3d24a904249844a25eb829be095

  • Size

    216KB

  • Sample

    220521-pfb4dsadeq

  • MD5

    607bfb18a1256970e9de54e232c6d3f2

  • SHA1

    7d5de7ef0c0bc3d4354680aa6c80cca58f461da0

  • SHA256

    d16c23015e1e8c42aaf428c4d375c9780ff1b3d24a904249844a25eb829be095

  • SHA512

    4297b794c5ec259727ccc8c8f241e3b632013c9f46b76f36c77c3a09479d90d8e6c84e144707e3050203f224791e45e5ee28bd2d1a3c2cc9da6570d1b1a7ae55

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.flexiitankpack.com
  • Port:
    587
  • Username:
    james@flexiitankpack.com
  • Password:
    N#ddFGL2

Targets

    • Target

      TTSwiftCopy.exe

    • Size

      644KB

    • MD5

      bcf2c90283102d3d58781e22ead750db

    • SHA1

      719d8160cfb6d8801fa462c47da9be16dbfa86ea

    • SHA256

      ae693716029a02fbd7ba621099b54a85874c4f85b224e4f271ddcf8039492453

    • SHA512

      b69b487b3bf5745ab0643c6d26a209eb64a42ec21670937d05476b69c25c1bde3877bfe3a6956e379b33bced347920fc7d5170a8d65d0617ffd8ee3d199b783d

    • AgentTesla

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

    • AgentTesla Payload

    • Executes dropped EXE

    • Checks computer location settings

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

    • 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.

    • Accesses Microsoft Outlook profiles

    • 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

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks