General

  • Target

    RFQ20221123.doc

  • Size

    25KB

  • Sample

    221123-qxdh8aab2y

  • MD5

    6b2016dc99a6adbb0f7354674e5db3f4

  • SHA1

    a5e510cd04b00a59e486520f629d7942211e3044

  • SHA256

    f6ff722eb25d04d2d6a8f024c4e570abb07b4450fd14fbd491230b9953c5032f

  • SHA512

    fd03c6a717185f3017cccac70f572558d40019378853702cdfba12eab02b48d3dd5fa4b9e85cae3f7934954660653c0fc982ba1c47028420ac32b3ec8a70db41

  • SSDEEP

    768:YFx0XaIsnPRIa4fwJDEgyQapsGdcf4A/QyoVZIkvvE:Yf0Xvx3EDrb3G+AA/Q3wkHE

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      RFQ20221123.doc

    • Size

      25KB

    • MD5

      6b2016dc99a6adbb0f7354674e5db3f4

    • SHA1

      a5e510cd04b00a59e486520f629d7942211e3044

    • SHA256

      f6ff722eb25d04d2d6a8f024c4e570abb07b4450fd14fbd491230b9953c5032f

    • SHA512

      fd03c6a717185f3017cccac70f572558d40019378853702cdfba12eab02b48d3dd5fa4b9e85cae3f7934954660653c0fc982ba1c47028420ac32b3ec8a70db41

    • SSDEEP

      768:YFx0XaIsnPRIa4fwJDEgyQapsGdcf4A/QyoVZIkvvE:Yf0Xvx3EDrb3G+AA/Q3wkHE

    • 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

    • 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

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Tasks