Analysis

  • max time kernel
    125s
  • max time network
    104s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    08-04-2021 07:59

General

  • Target

    Quotation.exe

  • Size

    755KB

  • MD5

    1e72fdc63d96b7f7681cb76d2eb34d36

  • SHA1

    66e0afcc111a42a15817ccb6fce14f885b354c95

  • SHA256

    1fa8f6d52e8299dc1a67d9b3ba8af0d876e12cae58f72276ebecd1711c9a97e7

  • SHA512

    00e1667bb4cd7d4228f4788779ee37677bdcf311dd4b802a63e08a2626a66b297d8ae8d20c1cf8c8f4f973feb516b24dc00cd1873a4c8ce693b18fa3671f77e5

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.vivaldi.net
  • Port:
    587
  • Username:
    Ricardo2021@vivaldi.net
  • Password:
    Qwerty2020Hp##

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quotation.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1232
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dscWrFFhhJBg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpED53.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3220
    • C:\Users\Admin\AppData\Local\Temp\Quotation.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1300

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

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

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • C:\Users\Admin\AppData\Local\Temp\tmpED53.tmp
    MD5

    66242e3a205d3e631edefd2810ce2eb5

    SHA1

    92d5beb7d4d4bda07a33538a09ad4f0dff64aad0

    SHA256

    e7c023cbb62edacd0cad13b6b0a278fe440dd62c81352b4363abb1648cffd637

    SHA512

    c1b8dc32104b0f12413568497299eb116656b4951de277a7af8cbc5cb37b335acacf9c24bfb8dbb76873346f10610f92cc6e6381f833fe0782368a2f72088447

  • memory/1232-123-0x000000000AE50000-0x000000000AEC3000-memory.dmp
    Filesize

    460KB

  • memory/1232-118-0x0000000004F60000-0x0000000004FF2000-memory.dmp
    Filesize

    584KB

  • memory/1232-119-0x00000000050B0000-0x00000000050B1000-memory.dmp
    Filesize

    4KB

  • memory/1232-120-0x0000000007600000-0x0000000007601000-memory.dmp
    Filesize

    4KB

  • memory/1232-121-0x00000000055E0000-0x00000000055E5000-memory.dmp
    Filesize

    20KB

  • memory/1232-122-0x0000000008A40000-0x0000000008AF7000-memory.dmp
    Filesize

    732KB

  • memory/1232-114-0x0000000000710000-0x0000000000711000-memory.dmp
    Filesize

    4KB

  • memory/1232-116-0x0000000005600000-0x0000000005601000-memory.dmp
    Filesize

    4KB

  • memory/1232-117-0x0000000005000000-0x0000000005001000-memory.dmp
    Filesize

    4KB

  • memory/1300-127-0x00000000004374CE-mapping.dmp
  • memory/1300-126-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1300-133-0x00000000053D0000-0x00000000053D1000-memory.dmp
    Filesize

    4KB

  • memory/1300-134-0x0000000005580000-0x0000000005581000-memory.dmp
    Filesize

    4KB

  • memory/1300-135-0x00000000060F0000-0x00000000060F1000-memory.dmp
    Filesize

    4KB

  • memory/3220-124-0x0000000000000000-mapping.dmp