Analysis

  • max time kernel
    143s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 00:36

General

  • Target

    Detalles del banco.exe

  • Size

    610KB

  • MD5

    8ee663b59c093fa22f1253acc679ec41

  • SHA1

    e151bc43031a0ebe8c3c90a77bfa7a4d47b71c7e

  • SHA256

    f9bd72771da7917018cfca8a80bb7dad2e8e029aedcd8851c320256243c5e9db

  • SHA512

    b5c0fdd43dcbff73b77d8690b6021a0f1c708299b43915b708f41d8338a4463da2043f936a76c60d04b5f9e13bc79f0338fc0b6a0e1e8ad12d4efb922ed48fab

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.recuperacionesbahia.es
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    BAHIA123PUERTO

Signatures

  • AgentTesla

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

  • AgentTesla Payload 7 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Detalles del banco.exe
    "C:\Users\Admin\AppData\Local\Temp\Detalles del banco.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1968
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
      2⤵
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:740

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    Filesize

    40KB

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    Filesize

    40KB

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • \Users\Admin\AppData\Local\Temp\InstallUtil.exe
    Filesize

    40KB

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • memory/740-63-0x0000000000090000-0x00000000000DC000-memory.dmp
    Filesize

    304KB

  • memory/740-59-0x0000000000090000-0x00000000000DC000-memory.dmp
    Filesize

    304KB

  • memory/740-60-0x0000000000090000-0x00000000000DC000-memory.dmp
    Filesize

    304KB

  • memory/740-62-0x0000000000090000-0x00000000000DC000-memory.dmp
    Filesize

    304KB

  • memory/740-65-0x000000000044753E-mapping.dmp
  • memory/740-68-0x0000000000090000-0x00000000000DC000-memory.dmp
    Filesize

    304KB

  • memory/740-67-0x0000000000090000-0x00000000000DC000-memory.dmp
    Filesize

    304KB

  • memory/740-72-0x0000000000090000-0x00000000000DC000-memory.dmp
    Filesize

    304KB

  • memory/740-75-0x0000000000090000-0x00000000000DC000-memory.dmp
    Filesize

    304KB

  • memory/1968-57-0x0000000000260000-0x000000000026A000-memory.dmp
    Filesize

    40KB

  • memory/1968-54-0x0000000000310000-0x00000000003AE000-memory.dmp
    Filesize

    632KB

  • memory/1968-56-0x0000000000220000-0x000000000022A000-memory.dmp
    Filesize

    40KB

  • memory/1968-55-0x0000000075EF1000-0x0000000075EF3000-memory.dmp
    Filesize

    8KB