Analysis

  • max time kernel
    141s
  • max time network
    124s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    19-10-2021 06:52

General

  • Target

    BL No_ONEYDXBB14291300.exe

  • Size

    532KB

  • MD5

    7b1888bbeb7ce6970d46adc3afce4da4

  • SHA1

    7187301b08ae23137880e08648418314e380e152

  • SHA256

    65b95709aa577bed6eac737e3c35009e6199048bbaf3272e84de46abb94289ef

  • SHA512

    3aa1e35808f7f28b2613eed348fe310b146d468d65d514885ba63c537f5cff80c0b2c8a76d5731259caf11b522bc65589da710e7eea52c3949885089a7bac68a

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.prinutrition.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    forrest

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 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
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BL No_ONEYDXBB14291300.exe
    "C:\Users\Admin\AppData\Local\Temp\BL No_ONEYDXBB14291300.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1672
    • C:\Users\Admin\AppData\Local\Temp\BL No_ONEYDXBB14291300.exe
      "C:\Users\Admin\AppData\Local\Temp\BL No_ONEYDXBB14291300.exe"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:2256

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\Microsoft\CLR_v4.0_32\UsageLogs\BL No_ONEYDXBB14291300.exe.log
    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • memory/1672-122-0x000000000DC50000-0x000000000DC51000-memory.dmp
    Filesize

    4KB

  • memory/1672-118-0x0000000007CE0000-0x0000000007CE1000-memory.dmp
    Filesize

    4KB

  • memory/1672-119-0x0000000007E40000-0x0000000007E41000-memory.dmp
    Filesize

    4KB

  • memory/1672-120-0x0000000007C40000-0x000000000813E000-memory.dmp
    Filesize

    5.0MB

  • memory/1672-121-0x0000000008120000-0x0000000008128000-memory.dmp
    Filesize

    32KB

  • memory/1672-115-0x0000000000F50000-0x0000000000F51000-memory.dmp
    Filesize

    4KB

  • memory/1672-123-0x000000000DCF0000-0x000000000DD48000-memory.dmp
    Filesize

    352KB

  • memory/1672-117-0x0000000008140000-0x0000000008141000-memory.dmp
    Filesize

    4KB

  • memory/2256-124-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/2256-125-0x000000000043764E-mapping.dmp
  • memory/2256-131-0x0000000004D70000-0x000000000526E000-memory.dmp
    Filesize

    5.0MB

  • memory/2256-132-0x0000000004D40000-0x0000000004D41000-memory.dmp
    Filesize

    4KB

  • memory/2256-133-0x0000000005200000-0x0000000005201000-memory.dmp
    Filesize

    4KB