Analysis

  • max time kernel
    149s
  • max time network
    22s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    23-08-2021 17:00

General

  • Target

    Orden de cotización.xlsx______________________________.exe

  • Size

    852KB

  • MD5

    ef91a695fc5aef7d5c6630fd4e6b5a4f

  • SHA1

    36e11a1a53a68ac4eb081240062954854897ffbf

  • SHA256

    16a5798db6638e9ff43f3cddeeec26ee68c9294637d2c32ef8440f967dcff243

  • SHA512

    d5483e883e94b313af7f92cb8751f0df7c30061dc1971be6706eb2ec64314dd0318c6cd346bea0c236085932e3ae62b1d0eb1eb16a4d4ba4bc85cff76a1e0d33

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    serv-10708.handsonwebhosting.com
  • Port:
    587
  • Username:
    emma@multillantaszl.com
  • Password:
    icui4cu2@@

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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Orden de cotización.xlsx______________________________.exe
    "C:\Users\Admin\AppData\Local\Temp\Orden de cotización.xlsx______________________________.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:784
    • C:\Users\Admin\AppData\Local\Temp\Orden de cotización.xlsx______________________________.exe
      "C:\Users\Admin\AppData\Local\Temp\Orden de cotización.xlsx______________________________.exe"
      2⤵
      • Drops file in Drivers directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:856

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/784-60-0x0000000001360000-0x0000000001361000-memory.dmp
    Filesize

    4KB

  • memory/784-62-0x00000000012D0000-0x00000000012D1000-memory.dmp
    Filesize

    4KB

  • memory/784-63-0x0000000000310000-0x0000000000321000-memory.dmp
    Filesize

    68KB

  • memory/784-64-0x0000000007DF0000-0x0000000007E93000-memory.dmp
    Filesize

    652KB

  • memory/784-65-0x0000000000B10000-0x0000000000B51000-memory.dmp
    Filesize

    260KB

  • memory/856-67-0x000000000043770E-mapping.dmp
  • memory/856-66-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/856-68-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/856-70-0x0000000004AC0000-0x0000000004AC1000-memory.dmp
    Filesize

    4KB

  • memory/856-71-0x0000000004AC1000-0x0000000004AC2000-memory.dmp
    Filesize

    4KB