Analysis

  • max time kernel
    91s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:25

General

  • Target

    PO NOAB1088 -890998767909766.pif.exe

  • Size

    813KB

  • MD5

    f81dcda90d66e0f8b298be8f34d3025f

  • SHA1

    f292fe84bafd9b383fd3821bd199766a68a332e6

  • SHA256

    2c58586fa63f30484f632c92f18ee119950537c49e956f5b185bb5de21585ab6

  • SHA512

    e6d2c35f936fedc2829ad78c0a8ec9f9f427c915f3f539a08f59e4a2eaf0a65b3871000871030fbeca4d71e707da3ba3959c0ac0734e8b6dd7217652cb96004b

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note
<|| v2.1.0.0 ||> 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 12:28:35 AM MassLogger Started: 5/21/2022 12:28:19 AM Interval: 96 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PO NOAB1088 -890998767909766.pif.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| USB Spread ||> Disabled <|| Bot Killer ||> Disabled <|| Window Searcher ||> 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 ||> Disabled

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: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO NOAB1088 -890998767909766.pif.exe
    "C:\Users\Admin\AppData\Local\Temp\PO NOAB1088 -890998767909766.pif.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1516
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZsDHcpxXQkjG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEC82.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1804
    • C:\Users\Admin\AppData\Local\Temp\PO NOAB1088 -890998767909766.pif.exe
      "{path}"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • 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\tmpEC82.tmp

    Filesize

    1KB

    MD5

    0b463993e3e8a70281511b72e6f54713

    SHA1

    d17767616970ec504089c687bfe43cda3dc8c343

    SHA256

    572f3d803b33b359595c985a2411ccc402c34609031af7bed1deddf4859e9de0

    SHA512

    b675d0b1440fca89dc0f494d2633f6bf14ad7aa5ef83e8f5417c1becce0034a6c998b2cfa19bb9309da37dcb3e811260912d2f4cd265267823288f77a41c227c

  • memory/1516-54-0x0000000001180000-0x0000000001250000-memory.dmp

    Filesize

    832KB

  • memory/1516-55-0x00000000755A1000-0x00000000755A3000-memory.dmp

    Filesize

    8KB

  • memory/1516-56-0x00000000002F0000-0x00000000002F8000-memory.dmp

    Filesize

    32KB

  • memory/1516-57-0x0000000004D30000-0x0000000004DD0000-memory.dmp

    Filesize

    640KB

  • memory/1804-58-0x0000000000000000-mapping.dmp

  • memory/1808-63-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1808-61-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1808-60-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1808-64-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1808-65-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1808-66-0x000000000049429E-mapping.dmp

  • memory/1808-68-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1808-70-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/1808-71-0x00000000003C0000-0x0000000000404000-memory.dmp

    Filesize

    272KB

  • memory/1808-73-0x0000000001115000-0x0000000001126000-memory.dmp

    Filesize

    68KB

  • memory/1808-74-0x0000000000780000-0x0000000000794000-memory.dmp

    Filesize

    80KB