Analysis

  • max time kernel
    152s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 14:29

General

  • Target

    OC_Y590382614.exe

  • Size

    1.2MB

  • MD5

    702a370d537ad9909efe4645ff854a3e

  • SHA1

    cd7dc538b01dea63f5c619ebe4de89ba75b3a245

  • SHA256

    c7202ac90daa5d696736a32eff2c930eba08332c9416ff6a464ce3ea17f414f9

  • SHA512

    b2bca63f30b8d2848b70321201a36ad87de841325374fc8ae350ea9dc9d5894d7bfc333802e24054b9653b3f7ac150a658acffb86c1460cf31f828d2393a814d

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\3B8E3C2477\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: 5/20/2022 6:03:44 PM MassLogger Started: 5/20/2022 6:03:33 PM Interval: 1 hour MassLogger Process: C:\Users\Admin\AppData\Roaming\appdata\app.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Window Searcher ||> Disabled <|| Downloader ||> 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 ||> Disabled

Signatures

  • MassLogger

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

  • MassLogger Main Payload 2 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • 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
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\OC_Y590382614.exe
    "C:\Users\Admin\AppData\Local\Temp\OC_Y590382614.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Loads dropped DLL
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:1552
      • C:\Users\Admin\AppData\Roaming\appdata\app.exe
        "C:\Users\Admin\AppData\Roaming\appdata\app.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:976
        • C:\Users\Admin\AppData\Roaming\appdata\app.exe
          "C:\Users\Admin\AppData\Roaming\appdata\app.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:1388
        • C:\Users\Admin\AppData\Roaming\appdata\app.exe
          "C:\Users\Admin\AppData\Roaming\appdata\app.exe" 2 1388 7093178
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:1152

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\appdata\app.exe

    Filesize

    1.2MB

    MD5

    702a370d537ad9909efe4645ff854a3e

    SHA1

    cd7dc538b01dea63f5c619ebe4de89ba75b3a245

    SHA256

    c7202ac90daa5d696736a32eff2c930eba08332c9416ff6a464ce3ea17f414f9

    SHA512

    b2bca63f30b8d2848b70321201a36ad87de841325374fc8ae350ea9dc9d5894d7bfc333802e24054b9653b3f7ac150a658acffb86c1460cf31f828d2393a814d

  • C:\Users\Admin\AppData\Roaming\appdata\app.exe

    Filesize

    1.2MB

    MD5

    702a370d537ad9909efe4645ff854a3e

    SHA1

    cd7dc538b01dea63f5c619ebe4de89ba75b3a245

    SHA256

    c7202ac90daa5d696736a32eff2c930eba08332c9416ff6a464ce3ea17f414f9

    SHA512

    b2bca63f30b8d2848b70321201a36ad87de841325374fc8ae350ea9dc9d5894d7bfc333802e24054b9653b3f7ac150a658acffb86c1460cf31f828d2393a814d

  • C:\Users\Admin\AppData\Roaming\appdata\app.exe

    Filesize

    1.2MB

    MD5

    702a370d537ad9909efe4645ff854a3e

    SHA1

    cd7dc538b01dea63f5c619ebe4de89ba75b3a245

    SHA256

    c7202ac90daa5d696736a32eff2c930eba08332c9416ff6a464ce3ea17f414f9

    SHA512

    b2bca63f30b8d2848b70321201a36ad87de841325374fc8ae350ea9dc9d5894d7bfc333802e24054b9653b3f7ac150a658acffb86c1460cf31f828d2393a814d

  • C:\Users\Admin\AppData\Roaming\appdata\app.exe

    Filesize

    1.2MB

    MD5

    702a370d537ad9909efe4645ff854a3e

    SHA1

    cd7dc538b01dea63f5c619ebe4de89ba75b3a245

    SHA256

    c7202ac90daa5d696736a32eff2c930eba08332c9416ff6a464ce3ea17f414f9

    SHA512

    b2bca63f30b8d2848b70321201a36ad87de841325374fc8ae350ea9dc9d5894d7bfc333802e24054b9653b3f7ac150a658acffb86c1460cf31f828d2393a814d

  • \Users\Admin\AppData\Roaming\appdata\app.exe

    Filesize

    1.2MB

    MD5

    702a370d537ad9909efe4645ff854a3e

    SHA1

    cd7dc538b01dea63f5c619ebe4de89ba75b3a245

    SHA256

    c7202ac90daa5d696736a32eff2c930eba08332c9416ff6a464ce3ea17f414f9

    SHA512

    b2bca63f30b8d2848b70321201a36ad87de841325374fc8ae350ea9dc9d5894d7bfc333802e24054b9653b3f7ac150a658acffb86c1460cf31f828d2393a814d

  • \Users\Admin\AppData\Roaming\appdata\app.exe

    Filesize

    1.2MB

    MD5

    702a370d537ad9909efe4645ff854a3e

    SHA1

    cd7dc538b01dea63f5c619ebe4de89ba75b3a245

    SHA256

    c7202ac90daa5d696736a32eff2c930eba08332c9416ff6a464ce3ea17f414f9

    SHA512

    b2bca63f30b8d2848b70321201a36ad87de841325374fc8ae350ea9dc9d5894d7bfc333802e24054b9653b3f7ac150a658acffb86c1460cf31f828d2393a814d

  • memory/976-60-0x0000000000000000-mapping.dmp

  • memory/976-63-0x0000000000400000-0x000000000053E000-memory.dmp

    Filesize

    1.2MB

  • memory/1152-67-0x0000000000000000-mapping.dmp

  • memory/1152-72-0x0000000000400000-0x000000000053E000-memory.dmp

    Filesize

    1.2MB

  • memory/1304-54-0x0000000076451000-0x0000000076453000-memory.dmp

    Filesize

    8KB

  • memory/1304-55-0x0000000000400000-0x000000000053E000-memory.dmp

    Filesize

    1.2MB

  • memory/1388-70-0x0000000001F50000-0x0000000002008000-memory.dmp

    Filesize

    736KB

  • memory/1388-65-0x0000000000580D50-mapping.dmp

  • memory/1388-71-0x0000000001F50000-0x0000000002008000-memory.dmp

    Filesize

    736KB

  • memory/1388-74-0x0000000004B40000-0x0000000004BB8000-memory.dmp

    Filesize

    480KB

  • memory/1388-75-0x0000000004C45000-0x0000000004C56000-memory.dmp

    Filesize

    68KB

  • memory/1552-56-0x0000000000000000-mapping.dmp