Analysis

  • max time kernel
    122s
  • max time network
    174s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    06-12-2022 08:52

General

  • Target

    5b0b65b9ad793f8d127a90f7f31e8d39.exe

  • Size

    837KB

  • MD5

    5b0b65b9ad793f8d127a90f7f31e8d39

  • SHA1

    6a7ede3e8f6064ec1a0b0ddaf97887d8d3567fe3

  • SHA256

    591e486f7e4431a0be2cd22abd2c4ad9c97f4eeaf8a387ef816fa32e15b267ce

  • SHA512

    ec31b35402802af0ec85035071ddd66921d02a98d7b385cc3e8a727c1b6a1d4aa948d02cb6accb54ef346b166b5ee7fea855ef35f8017d449d89c96939f7e4df

  • SSDEEP

    12288:Fc3fYBSWcVlcLOaYKzqCig4fVTMHPKX3QPKvjma/gKZ/nXt7virmWhlGLaQYI:egBiqOaZzxigO5MCQPKr

Malware Config

Extracted

Family

agenttesla

C2

https://discord.com/api/webhooks/1048308947817353288/5ypgS4XmSt1xW_MYhzjePp8jxnOIkdnEO0OTccrP0m7sB3ynEyezAUtrX-js6a4kTsJ8

Signatures

  • AgentTesla

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

  • 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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5b0b65b9ad793f8d127a90f7f31e8d39.exe
    "C:\Users\Admin\AppData\Local\Temp\5b0b65b9ad793f8d127a90f7f31e8d39.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:892
    • C:\Users\Admin\AppData\Local\Temp\5b0b65b9ad793f8d127a90f7f31e8d39.exe
      "C:\Users\Admin\AppData\Local\Temp\5b0b65b9ad793f8d127a90f7f31e8d39.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1768

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

2
T1081

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/892-54-0x0000000000A90000-0x0000000000B68000-memory.dmp
    Filesize

    864KB

  • memory/892-55-0x0000000075FE1000-0x0000000075FE3000-memory.dmp
    Filesize

    8KB

  • memory/892-56-0x0000000000730000-0x0000000000746000-memory.dmp
    Filesize

    88KB

  • memory/892-57-0x0000000000750000-0x000000000075E000-memory.dmp
    Filesize

    56KB

  • memory/892-58-0x00000000050F0000-0x000000000516E000-memory.dmp
    Filesize

    504KB

  • memory/892-59-0x00000000041C0000-0x0000000004204000-memory.dmp
    Filesize

    272KB

  • memory/1768-60-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1768-61-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1768-63-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1768-65-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1768-64-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1768-66-0x000000000043205E-mapping.dmp
  • memory/1768-68-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1768-70-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB