Analysis

  • max time kernel
    117s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    16-05-2022 02:07

General

  • Target

    19c5d6ab953cd04cf91ba1370f14d527cf89de375c8a340ce3e34ef777cba84e.exe

  • Size

    942KB

  • MD5

    291d775d55a75bb207922bf0d28ce052

  • SHA1

    50e259313a63370304c62d9b68b74152a08ef123

  • SHA256

    19c5d6ab953cd04cf91ba1370f14d527cf89de375c8a340ce3e34ef777cba84e

  • SHA512

    cd8e88564edb628714d0fcee6f01da1df21497ebd8015054678b7d46a379a4fa67b57866dfa34d71da80b336d9693623ce21edc2d18d69e9760f41a7d6df90b6

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\8236ADF044\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> User Name: Admin IP: 127.0.0.1 Location: United States Windows OS: Microsoft Windows 10 Pro 64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/16/2022 4:14:02 AM MassLogger Started: 5/16/2022 4:13:49 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\19c5d6ab953cd04cf91ba1370f14d527cf89de375c8a340ce3e34ef777cba84e.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

Signatures

  • MassLogger

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

  • MassLogger Main Payload 1 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Checks computer location settings 2 TTPs 2 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 42 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 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\19c5d6ab953cd04cf91ba1370f14d527cf89de375c8a340ce3e34ef777cba84e.exe
    "C:\Users\Admin\AppData\Local\Temp\19c5d6ab953cd04cf91ba1370f14d527cf89de375c8a340ce3e34ef777cba84e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1180
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2599.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4108
    • C:\Users\Admin\AppData\Local\Temp\19c5d6ab953cd04cf91ba1370f14d527cf89de375c8a340ce3e34ef777cba84e.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:4628

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\19c5d6ab953cd04cf91ba1370f14d527cf89de375c8a340ce3e34ef777cba84e.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\tmp2599.tmp

    Filesize

    1KB

    MD5

    072541fbcc0f05e7e00afb8876087822

    SHA1

    0a1a6ad25a4a546520fe21bed23b4dd56f5ea7f5

    SHA256

    8a98b2e2084e096028123a79228bc1b11f12179aecfbe53759b3e0805f973116

    SHA512

    07074f512ee920a787af3d49d982795121051cc5cd1ce01d115aab63cd800fd58f2f57e73dafb96151e57ada9d2e407e370abc9c56d8ab604d118dad93c1412d

  • memory/1180-130-0x0000000000870000-0x0000000000962000-memory.dmp

    Filesize

    968KB

  • memory/1180-131-0x00000000058D0000-0x0000000005E74000-memory.dmp

    Filesize

    5.6MB

  • memory/1180-132-0x0000000005320000-0x00000000053B2000-memory.dmp

    Filesize

    584KB

  • memory/1180-133-0x00000000053C0000-0x00000000053CA000-memory.dmp

    Filesize

    40KB

  • memory/1180-134-0x0000000008D00000-0x0000000008D9C000-memory.dmp

    Filesize

    624KB

  • memory/4108-135-0x0000000000000000-mapping.dmp

  • memory/4628-137-0x0000000000000000-mapping.dmp

  • memory/4628-138-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4628-140-0x0000000005100000-0x0000000005166000-memory.dmp

    Filesize

    408KB

  • memory/4628-141-0x0000000007A60000-0x0000000007AB0000-memory.dmp

    Filesize

    320KB