Analysis

  • max time kernel
    152s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 23:33

General

  • Target

    NCJJLEeBL7A6qeP.exe

  • Size

    907KB

  • MD5

    324c08d81f759fda3100f9e0e29e54d0

  • SHA1

    b83c45ed9ae133ea580b4f4e17760d82986daea0

  • SHA256

    96af26169543b638599cd1c9e7b236572c5cdab29c844d7e824b30f0a2cbab16

  • SHA512

    859fe1e5df4d11965bfbcb10b7ad3b0ffd4f4db98cd66722db5ae70361b7ad512ef88cd417154940ce1443894710da1f346f9d63991d9159f632e00ff01dfefd

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\AEF946DCB4\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.50 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 1:42:03 AM MassLogger Started: 5/21/2022 1:41:37 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\NCJJLEeBL7A6qeP.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    ayo2018

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 35 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NCJJLEeBL7A6qeP.exe
    "C:\Users\Admin\AppData\Local\Temp\NCJJLEeBL7A6qeP.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:904
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp755F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1684
    • C:\Users\Admin\AppData\Local\Temp\NCJJLEeBL7A6qeP.exe
      "{path}"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1808

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp755F.tmp

    Filesize

    1KB

    MD5

    dc436ff5b60ef8168376c73a193ed25c

    SHA1

    0943c8a1a0851b7b79d31fadb488cce2e0444638

    SHA256

    949ee6cece73e1304479fc963d79d2fd8e6410f451c1ce0ae6fd6e1b40b70705

    SHA512

    1f66711762ef86444a1e4edd5e3105b2ca5e83ec72bc6c2e04c7b5a9de1f50df3a6a85c75fc54003e4ebb0c9d8061455a6ef2e544726536592fb32dbf99736bd

  • memory/904-54-0x0000000000D70000-0x0000000000E58000-memory.dmp

    Filesize

    928KB

  • memory/904-55-0x0000000076531000-0x0000000076533000-memory.dmp

    Filesize

    8KB

  • memory/904-56-0x0000000000B40000-0x0000000000B48000-memory.dmp

    Filesize

    32KB

  • memory/904-57-0x0000000007E10000-0x0000000007ED2000-memory.dmp

    Filesize

    776KB

  • memory/904-58-0x0000000004FB0000-0x0000000005072000-memory.dmp

    Filesize

    776KB

  • memory/1684-59-0x0000000000000000-mapping.dmp

  • memory/1808-62-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1808-61-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1808-64-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1808-65-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1808-66-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1808-67-0x00000000004B30FE-mapping.dmp

  • memory/1808-69-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1808-71-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1808-72-0x0000000000650000-0x00000000006C8000-memory.dmp

    Filesize

    480KB

  • memory/1808-74-0x00000000051E5000-0x00000000051F6000-memory.dmp

    Filesize

    68KB