Analysis

  • max time kernel
    74s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 01:18

General

  • Target

    Request For Quotation - 808923AC.exe

  • Size

    1.1MB

  • MD5

    77d3a40e32e4c9cc91d2084d6b5f348a

  • SHA1

    6db4d154a11866ba7f603248157f5f533e6ab716

  • SHA256

    0f827a522bec00f64e7c734f68677414a25c732f83e7c9def21299a0d8a0f8c4

  • SHA512

    d677fbd3bab91fbe35f47e38b797182ef8c4cd869a3beb97bfe15b95a6556c887d25f6d6e87d9f3f60daf8735894ec83043d846a98eb73cdadee2a4daea8f69d

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 3:47:16 AM MassLogger Started: 5/21/2022 3:47:05 AM Interval: 96 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Request For Quotation - 808923AC.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> Disabled <|| Downloader ||> 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Request For Quotation - 808923AC.exe
    "C:\Users\Admin\AppData\Local\Temp\Request For Quotation - 808923AC.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1156
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TTNkEUoh" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC360.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1604
    • C:\Users\Admin\AppData\Local\Temp\Request For Quotation - 808923AC.exe
      "{path}"
      2⤵
        PID:1640
      • C:\Users\Admin\AppData\Local\Temp\Request For Quotation - 808923AC.exe
        "{path}"
        2⤵
          PID:1660
        • C:\Users\Admin\AppData\Local\Temp\Request For Quotation - 808923AC.exe
          "{path}"
          2⤵
            PID:1696
          • C:\Users\Admin\AppData\Local\Temp\Request For Quotation - 808923AC.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:1616

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpC360.tmp

          Filesize

          1KB

          MD5

          58c98d68b1285ea29efe84833bdcd039

          SHA1

          6f41b68abfe4f2c3c56af426ab2babca9a56aa99

          SHA256

          0e99e8f57a1ca0580f82dadedc7c5a446cb9c65d9ecd4adcc06456a3cfe3735e

          SHA512

          649bd64c123a07caba7bb3793e299bfe91fc5a338bf816b5c8038969ece8d5043d8ce14310611a47e853b384448202d6b073111f4521a22fb2b58ede8739f3cd

        • memory/1156-54-0x0000000000220000-0x0000000000336000-memory.dmp

          Filesize

          1.1MB

        • memory/1156-55-0x0000000000590000-0x0000000000598000-memory.dmp

          Filesize

          32KB

        • memory/1156-56-0x00000000052D0000-0x0000000005372000-memory.dmp

          Filesize

          648KB

        • memory/1604-57-0x0000000000000000-mapping.dmp

        • memory/1616-63-0x0000000000400000-0x000000000049A000-memory.dmp

          Filesize

          616KB

        • memory/1616-60-0x0000000000400000-0x000000000049A000-memory.dmp

          Filesize

          616KB

        • memory/1616-62-0x0000000000400000-0x000000000049A000-memory.dmp

          Filesize

          616KB

        • memory/1616-59-0x0000000000400000-0x000000000049A000-memory.dmp

          Filesize

          616KB

        • memory/1616-65-0x000000000049492E-mapping.dmp

        • memory/1616-64-0x0000000000400000-0x000000000049A000-memory.dmp

          Filesize

          616KB

        • memory/1616-67-0x0000000000400000-0x000000000049A000-memory.dmp

          Filesize

          616KB

        • memory/1616-69-0x0000000000400000-0x000000000049A000-memory.dmp

          Filesize

          616KB

        • memory/1616-70-0x0000000000590000-0x00000000005D4000-memory.dmp

          Filesize

          272KB

        • memory/1616-71-0x00000000755C1000-0x00000000755C3000-memory.dmp

          Filesize

          8KB

        • memory/1616-72-0x0000000000945000-0x0000000000956000-memory.dmp

          Filesize

          68KB

        • memory/1616-73-0x00000000008F0000-0x0000000000904000-memory.dmp

          Filesize

          80KB