Analysis

  • max time kernel
    140s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-10-2022 09:38

General

  • Target

    Doc2050023RFT.exe

  • Size

    1.5MB

  • MD5

    c8dfc09ebcbda6de3cb18d2c5ca52483

  • SHA1

    91f2bf86bb3d8d73fd9b09881087099b81315a8b

  • SHA256

    9f3b0574ee8ea34114c6de2ed4f351552400569e42d4032a2ec5dcff3107af1c

  • SHA512

    0b025d8c5f445d20a66b4d6195112addc9b5dc19b2c4897d50640e01af58ec2fb3f363a45273f2316a5fb09a44caf785f20b1e9df809b45259929475b156bd32

  • SSDEEP

    12288:cnjoh8rQqH/jnWZQzjFeM6DJOjB9sTTHy3hPA4iDJQbLiQXxaURDEVmHCj3hPG7g:qLHbnYQb6VOL25DKnikzU36oGc

Malware Config

Extracted

Family

agenttesla

C2

http://45.155.165.63/3ip/inc/523ecb38582a9c.php

Signatures

  • AgentTesla

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

  • 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
  • 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 2 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\Doc2050023RFT.exe
    "C:\Users\Admin\AppData\Local\Temp\Doc2050023RFT.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2848
    • C:\Users\Admin\AppData\Local\Temp\Doc2050023RFT.exe
      C:\Users\Admin\AppData\Local\Temp\Doc2050023RFT.exe
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:3208

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

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2848-132-0x0000000000B70000-0x0000000000CFE000-memory.dmp
    Filesize

    1.6MB

  • memory/2848-133-0x00000000055E0000-0x0000000005602000-memory.dmp
    Filesize

    136KB

  • memory/3208-134-0x0000000000000000-mapping.dmp
  • memory/3208-135-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/3208-136-0x00000000059F0000-0x0000000005F94000-memory.dmp
    Filesize

    5.6MB

  • memory/3208-137-0x0000000005440000-0x00000000054DC000-memory.dmp
    Filesize

    624KB

  • memory/3208-138-0x0000000006010000-0x0000000006076000-memory.dmp
    Filesize

    408KB

  • memory/3208-139-0x0000000006530000-0x0000000006580000-memory.dmp
    Filesize

    320KB

  • memory/3208-140-0x0000000006D90000-0x0000000006E22000-memory.dmp
    Filesize

    584KB

  • memory/3208-141-0x0000000006D30000-0x0000000006D3A000-memory.dmp
    Filesize

    40KB