Analysis

  • max time kernel
    141s
  • max time network
    15s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    27-01-2021 14:16

General

  • Target

    njGJ1eW44wshoMr.exe

  • Size

    812KB

  • MD5

    3642d5bf033629d0a716fff2c17125b2

  • SHA1

    47993d2f980a7c3de204b008618c9b4c25511a49

  • SHA256

    c7af68bcec3b1c2e3a87f08111ab75b525799c5386fa85b529f8690bfa1c766a

  • SHA512

    d0539565dbd492ed31b00accab13a629f2535fe9d3123e90038fb55591a079d9ddc0e9f7fde493cdb49621f50901283e0d8a8343617089519b0cac57b9eda4d0

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.cefortem.cat
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Vft284Rpyn

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\njGJ1eW44wshoMr.exe
    "C:\Users\Admin\AppData\Local\Temp\njGJ1eW44wshoMr.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1752
    • C:\Users\Admin\AppData\Local\Temp\njGJ1eW44wshoMr.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1456

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1456-8-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1456-9-0x00000000004374DE-mapping.dmp
  • memory/1456-10-0x00000000741E0000-0x00000000748CE000-memory.dmp
    Filesize

    6.9MB

  • memory/1456-11-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1456-13-0x0000000004970000-0x0000000004971000-memory.dmp
    Filesize

    4KB

  • memory/1456-14-0x0000000004971000-0x0000000004972000-memory.dmp
    Filesize

    4KB

  • memory/1752-2-0x00000000741E0000-0x00000000748CE000-memory.dmp
    Filesize

    6.9MB

  • memory/1752-3-0x0000000000260000-0x0000000000261000-memory.dmp
    Filesize

    4KB

  • memory/1752-5-0x0000000004EB0000-0x0000000004EB1000-memory.dmp
    Filesize

    4KB

  • memory/1752-6-0x0000000000330000-0x0000000000334000-memory.dmp
    Filesize

    16KB

  • memory/1752-7-0x00000000055F0000-0x0000000005647000-memory.dmp
    Filesize

    348KB