Analysis

  • max time kernel
    136s
  • max time network
    110s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    19-04-2021 17:07

General

  • Target

    Invoice.exe

  • Size

    968KB

  • MD5

    5d594789c434b468372bc5d531d5e036

  • SHA1

    3b0c36366b058579956ea7d9084cff568808703f

  • SHA256

    9c645de660221979f2b85b37abcdbed2feca19827f33442138fd92d05e2b2d15

  • SHA512

    a20eaf9e7bcef2e72fe32a4fcfcab68de775dec530a6f64114412ae7c5f8fde7ecc2875185d9cddae7e2bc5871d3f76496a39900994e80df5fb44eabe91199aa

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.lallyautomobiles.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Welcome@2021

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • Drops file in Drivers directory 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:488
    • C:\Users\Admin\AppData\Local\Temp\Invoice.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2680

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Invoice.exe.log
    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • memory/488-119-0x0000000004DF0000-0x0000000004E82000-memory.dmp
    Filesize

    584KB

  • memory/488-124-0x0000000004900000-0x000000000497E000-memory.dmp
    Filesize

    504KB

  • memory/488-118-0x0000000004EA0000-0x0000000004EA1000-memory.dmp
    Filesize

    4KB

  • memory/488-114-0x0000000000430000-0x0000000000431000-memory.dmp
    Filesize

    4KB

  • memory/488-120-0x0000000007300000-0x0000000007301000-memory.dmp
    Filesize

    4KB

  • memory/488-121-0x00000000072B0000-0x00000000072B5000-memory.dmp
    Filesize

    20KB

  • memory/488-117-0x0000000004F00000-0x0000000004F01000-memory.dmp
    Filesize

    4KB

  • memory/488-123-0x0000000007650000-0x0000000007713000-memory.dmp
    Filesize

    780KB

  • memory/488-122-0x000000007EE70000-0x000000007EE71000-memory.dmp
    Filesize

    4KB

  • memory/488-116-0x0000000005400000-0x0000000005401000-memory.dmp
    Filesize

    4KB

  • memory/2680-126-0x000000000043762E-mapping.dmp
  • memory/2680-125-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/2680-132-0x0000000005570000-0x0000000005571000-memory.dmp
    Filesize

    4KB

  • memory/2680-133-0x0000000005540000-0x0000000005541000-memory.dmp
    Filesize

    4KB

  • memory/2680-134-0x00000000061D0000-0x00000000061D1000-memory.dmp
    Filesize

    4KB