Analysis

  • max time kernel
    149s
  • max time network
    10s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    13-01-2021 20:13

General

  • Target

    Request For Quotation_pdf.scr

  • Size

    1.2MB

  • MD5

    a9125d57b0d4162e7da34d6b8c10836f

  • SHA1

    56bcb534abe3e5111b07b4f502b647fb5584b905

  • SHA256

    4f84f23b927e4a2f6f64d0c824777c1e0edb05f8f83a662ef59617793582cfb6

  • SHA512

    430731a8792d27fac18be517bb200a514cc8b7d72e90d0bdfcd630ba85600c46633f13b3499eea0993573122c07dd5015fc2318b7e13dbed9495222822d6930d

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    diamondraylog@yandex.ru
  • Password:
    tonyelo000@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 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.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Request For Quotation_pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\Request For Quotation_pdf.scr" /S
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1680
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FLahHLuGzK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE8C9.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1092

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\Temp\tmpE8C9.tmp
    MD5

    41648fae6461e11c94201094b4890f0e

    SHA1

    a9512f47f8c53c5c7725dd991c87d42c57538105

    SHA256

    bd7551579f40a9110ffef61fd6907e6fc1683e3b03a888cb0f79e3a37fc4ea0e

    SHA512

    88835094183afc8e245516d97f82ec3b36ee367356d2d5068fa922fe40148c06f0b36b7918391df78381ccdeea809613e7d3b77ab7fa6390d40fdcebadda31c0

  • memory/1092-7-0x0000000000000000-mapping.dmp
  • memory/1680-2-0x00000000741A0000-0x000000007488E000-memory.dmp
    Filesize

    6.9MB

  • memory/1680-3-0x0000000000C00000-0x0000000000C01000-memory.dmp
    Filesize

    4KB

  • memory/1680-5-0x0000000000540000-0x0000000000552000-memory.dmp
    Filesize

    72KB

  • memory/1680-6-0x00000000050E0000-0x0000000005154000-memory.dmp
    Filesize

    464KB

  • memory/1680-9-0x00000000048A0000-0x00000000048D7000-memory.dmp
    Filesize

    220KB