Analysis

  • max time kernel
    150s
  • max time network
    110s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    27-01-2021 07:29

General

  • Target

    Invoice-3990993.exe

  • Size

    582KB

  • MD5

    c240ecb4d6da455111dca9256dcd3604

  • SHA1

    de229f907f93f89d5fe10828fa7e8034e70cda55

  • SHA256

    4730211b41726d261fe9f81bbbacd224b2659f9f05909395f8492adf187d8666

  • SHA512

    28ff87cdbc0d40702122818592a197e92d637947b7591c785d34c7b37175061206683dc3ff57918a50de021841bf33d1aba13275f2fc4337b6c19e4c19adaacf

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.hybridgroupco.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Money123@@@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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\Invoice-3990993.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice-3990993.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4052
    • C:\Users\Admin\AppData\Local\Temp\Invoice-3990993.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice-3990993.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1892

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\Invoice-3990993.exe.log
    MD5

    90acfd72f14a512712b1a7380c0faf60

    SHA1

    40ba4accb8faa75887e84fb8e38d598dc8cf0f12

    SHA256

    20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

    SHA512

    29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

  • memory/1892-13-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1892-23-0x0000000005B80000-0x0000000005B81000-memory.dmp
    Filesize

    4KB

  • memory/1892-22-0x00000000054E0000-0x00000000054E1000-memory.dmp
    Filesize

    4KB

  • memory/1892-20-0x0000000005020000-0x0000000005021000-memory.dmp
    Filesize

    4KB

  • memory/1892-16-0x0000000073820000-0x0000000073F0E000-memory.dmp
    Filesize

    6.9MB

  • memory/1892-14-0x00000000004375EE-mapping.dmp
  • memory/4052-7-0x0000000005030000-0x0000000005031000-memory.dmp
    Filesize

    4KB

  • memory/4052-11-0x00000000051C0000-0x00000000051C3000-memory.dmp
    Filesize

    12KB

  • memory/4052-12-0x0000000005CA0000-0x0000000005D0C000-memory.dmp
    Filesize

    432KB

  • memory/4052-10-0x00000000051F0000-0x00000000051F1000-memory.dmp
    Filesize

    4KB

  • memory/4052-9-0x0000000005280000-0x0000000005281000-memory.dmp
    Filesize

    4KB

  • memory/4052-8-0x0000000004EE0000-0x0000000004EE1000-memory.dmp
    Filesize

    4KB

  • memory/4052-2-0x0000000073820000-0x0000000073F0E000-memory.dmp
    Filesize

    6.9MB

  • memory/4052-6-0x0000000005530000-0x0000000005531000-memory.dmp
    Filesize

    4KB

  • memory/4052-5-0x0000000004F90000-0x0000000004F91000-memory.dmp
    Filesize

    4KB

  • memory/4052-3-0x0000000000640000-0x0000000000641000-memory.dmp
    Filesize

    4KB