Analysis

  • max time kernel
    138s
  • max time network
    136s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    27-07-2021 18:19

General

  • Target

    6ufxz8ps3Mbqhxn.exe

  • Size

    644KB

  • MD5

    c253f7490b6837696d2a3108063b1759

  • SHA1

    5e638bdae86a9fa81e53085f345c117a21510c24

  • SHA256

    3989e4bbaeab65af22040deae65366ea0b0091b8baf47093fe8147a8eb8187da

  • SHA512

    73bf7b6be7b7fa727ce69203924989c5049b3daffc80f8404638f3010c0dab05e770f5362d8ba01521c89523a9c87ea52b4d976f60edcde34943a5c7cd71ef2d

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.vivaldi.net
  • Port:
    587
  • Username:
    vor007@vivaldi.net
  • Password:
    Temporal2018*

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6ufxz8ps3Mbqhxn.exe
    "C:\Users\Admin\AppData\Local\Temp\6ufxz8ps3Mbqhxn.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:500
    • C:\Users\Admin\AppData\Local\Temp\6ufxz8ps3Mbqhxn.exe
      "C:\Users\Admin\AppData\Local\Temp\6ufxz8ps3Mbqhxn.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1248

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

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\6ufxz8ps3Mbqhxn.exe.log
    MD5

    90acfd72f14a512712b1a7380c0faf60

    SHA1

    40ba4accb8faa75887e84fb8e38d598dc8cf0f12

    SHA256

    20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

    SHA512

    29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

  • memory/500-119-0x0000000004D90000-0x0000000004D91000-memory.dmp
    Filesize

    4KB

  • memory/500-124-0x0000000007420000-0x0000000007459000-memory.dmp
    Filesize

    228KB

  • memory/500-118-0x0000000004F20000-0x0000000004F21000-memory.dmp
    Filesize

    4KB

  • memory/500-114-0x0000000000390000-0x0000000000391000-memory.dmp
    Filesize

    4KB

  • memory/500-120-0x0000000005080000-0x0000000005081000-memory.dmp
    Filesize

    4KB

  • memory/500-121-0x0000000004D00000-0x0000000004D9C000-memory.dmp
    Filesize

    624KB

  • memory/500-117-0x0000000005380000-0x0000000005381000-memory.dmp
    Filesize

    4KB

  • memory/500-123-0x00000000073A0000-0x0000000007412000-memory.dmp
    Filesize

    456KB

  • memory/500-122-0x0000000005320000-0x000000000533B000-memory.dmp
    Filesize

    108KB

  • memory/500-116-0x0000000004DA0000-0x0000000004DA1000-memory.dmp
    Filesize

    4KB

  • memory/1248-126-0x000000000043751E-mapping.dmp
  • memory/1248-125-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1248-132-0x0000000004DB0000-0x00000000052AE000-memory.dmp
    Filesize

    5.0MB

  • memory/1248-133-0x00000000051D0000-0x00000000051D1000-memory.dmp
    Filesize

    4KB

  • memory/1248-134-0x0000000005AA0000-0x0000000005AA1000-memory.dmp
    Filesize

    4KB