General

  • Target

    ee07f6370ede7ad99079e7ec624cac5823d451ce5529496af366fda7e554f6d7

  • Size

    421KB

  • Sample

    220521-cbst5adeg2

  • MD5

    225066a6a1fcd8b9e6dd44019a32d72e

  • SHA1

    fbbffc0c72efba93fa1e3825c7814e68d89fec60

  • SHA256

    ee07f6370ede7ad99079e7ec624cac5823d451ce5529496af366fda7e554f6d7

  • SHA512

    5ccb726c1fff82d895b085a786060d0f8864ad23a7a6b5d57d9613ac43acd09edef365e3bad09b2d86765cb237e8a7b4ba44ab0a8e54ede64891abac4fd1a27d

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.scandinavian-collection.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    kR6d.DFet#7w

Targets

    • Target

      Quotation.exe

    • Size

      467KB

    • MD5

      e1a68793a7d62a16837c95b2cc38da0e

    • SHA1

      a239f2c748725a001efff71c5126af68f1bd9fc4

    • SHA256

      d3ccfc7eefe685bc703f2975cde7560c851f7e28f8fac127baf54b24ede4ca91

    • SHA512

      4d3b781ffe5dff71a4fb5a3f081b25c4efc625caf17b52c07c8e1d6a41028b7f38354b55acb0eb8a1b1bf231aa6feba602b25aae4075c932f23f6dab74e906ee

    • AgentTesla

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

    • Modifies Windows Defender Real-time Protection settings

    • AgentTesla Payload

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

    • Checks computer location settings

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

    • 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.

    • Windows security modification

    • Accesses Microsoft Outlook profiles

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

3
T1112

Disabling Security Tools

2
T1089

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