General

  • Target

    SKMBT-26492048.doc

  • Size

    29KB

  • Sample

    221207-nxbzaade34

  • MD5

    2a9416fdb9589a08d47ee77c605135f7

  • SHA1

    6bd96607cf10750439eee6f8e36d3ad49c42c37a

  • SHA256

    d46b345892a5710fff0d9d3bb4293cf0ddbde73c59409bfa22baac017016e2e1

  • SHA512

    5ffb3bffd0189046675a344a0d286f03b6d5556b88736cdd7b1eac54a4ef2298ff6ac0b75ba8c264d5216cf4e4cf69c1574fcef0eae3d0337443035f23a0f8bb

  • SSDEEP

    768:qFx0XaIsnPRIa4fwJMXvlfCdtSKic2i92Wf9zJp:qf0Xvx3EMXtadxHFJp

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    hnxqezadblabdsss

Targets

    • Target

      SKMBT-26492048.doc

    • Size

      29KB

    • MD5

      2a9416fdb9589a08d47ee77c605135f7

    • SHA1

      6bd96607cf10750439eee6f8e36d3ad49c42c37a

    • SHA256

      d46b345892a5710fff0d9d3bb4293cf0ddbde73c59409bfa22baac017016e2e1

    • SHA512

      5ffb3bffd0189046675a344a0d286f03b6d5556b88736cdd7b1eac54a4ef2298ff6ac0b75ba8c264d5216cf4e4cf69c1574fcef0eae3d0337443035f23a0f8bb

    • SSDEEP

      768:qFx0XaIsnPRIa4fwJMXvlfCdtSKic2i92Wf9zJp:qf0Xvx3EMXtadxHFJp

    • AgentTesla

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • 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.

    • Accesses Microsoft Outlook profiles

    • 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 v6

Execution

Exploitation for Client Execution

1
T1203

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

Email Collection

1
T1114

Tasks