Analysis

  • max time kernel
    139s
  • max time network
    173s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    28-07-2021 06:03

General

  • Target

    0bf4527dbce68cdb15e9d7fab6229a3e.exe

  • Size

    701KB

  • MD5

    beee421f170be70ca4efd8b81940e18b

  • SHA1

    a124ee2194c9970275f2454899a5025f2887d9ad

  • SHA256

    407a175b3d9735477868deec5907b8e9703abcd76799529d9e2354bdddde550b

  • SHA512

    24e06abbf300b6da57e9617da07a89a404696cc6f97213d2c503ce2c90d49cc8186e2c8dfc49b9fc6172a69675b00ab298a34617bc1ae821af0a3854fe315893

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    PbQ)ubh9

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • CustAttr .NET packer 1 IoCs

    Detects CustAttr .NET packer in memory.

  • 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 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0bf4527dbce68cdb15e9d7fab6229a3e.exe
    "C:\Users\Admin\AppData\Local\Temp\0bf4527dbce68cdb15e9d7fab6229a3e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1032
    • C:\Users\Admin\AppData\Local\Temp\0bf4527dbce68cdb15e9d7fab6229a3e.exe
      "C:\Users\Admin\AppData\Local\Temp\0bf4527dbce68cdb15e9d7fab6229a3e.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:692

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

  • memory/692-67-0x000000000043749E-mapping.dmp
  • memory/692-66-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/692-68-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/692-70-0x0000000004B90000-0x0000000004B91000-memory.dmp
    Filesize

    4KB

  • memory/692-71-0x0000000004B91000-0x0000000004B92000-memory.dmp
    Filesize

    4KB

  • memory/1032-60-0x0000000001080000-0x0000000001081000-memory.dmp
    Filesize

    4KB

  • memory/1032-62-0x0000000000CA0000-0x0000000000CA1000-memory.dmp
    Filesize

    4KB

  • memory/1032-63-0x0000000000510000-0x000000000051B000-memory.dmp
    Filesize

    44KB

  • memory/1032-64-0x0000000008010000-0x0000000008086000-memory.dmp
    Filesize

    472KB

  • memory/1032-65-0x0000000000730000-0x000000000076D000-memory.dmp
    Filesize

    244KB