Analysis

  • max time kernel
    298s
  • max time network
    123s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/07/2026, 03:06

General

  • Target
    RFQ-CS-2026-1340-PR-1009380228-MQ.msi
  • Size 68KB
  • Sample260705-dlz7macw2k
  • SHA256 4903fbe3e8ee4bc49035c9fb6e8fd3d258f3daadf237d6b1f8dd3fe41cb4ced9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • masslogger

Attributes
  • exfiltration_mode

    #SMTPEnabled

  • expire_time_date

    00-00-0000

  • host_password

    Zs5s*QVx(4yLLl*1

  • host_port

    587

  • host_receiver

    [email protected]

  • host_sender

    [email protected]

  • host_server

    mail.trimnt.com

  • ssl_slate

    True

Signatures

  • Family: MassLogger

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

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 3 IoCs

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

  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 10 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 22 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\RFQ-CS-2026-1340-PR-1009380228-MQ.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:1792
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4320
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:6140
      • C:\Program Files (x86)\Adobe Reader\w3RwcPGEXutmqdn.exe
        "C:\Program Files (x86)\Adobe Reader\w3RwcPGEXutmqdn.exe"
        2⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • outlook_office_path
        • outlook_win_path
        PID:5824
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:5872

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59409a.rbs

          • Path C:\Config.Msi\e59409a.rbs
          • Size 7KB
          • SHA256 6f27a797c39a98493c761a19ab83c05d2ac71568afbea9c158e8e2bf44db795b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          w3RwcPGEXutmqdn.exe

          • Path C:\Program Files (x86)\Adobe Reader\w3RwcPGEXutmqdn.exe
          • Size 94KB
          • SHA256 2fe30eccd36f4346cb117af0cf626c2bca84b50c658b0c9af09110b9f86a53f4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 57e60b7b7a6897ea93c9ab3a48318659a1cb317e9ac13e133a8d44909d5f5f02
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {50cb32d7-6269-4549-ad95-3857bb3bbffe}_OnDiskSnapshotProp

          • Path \??\Volume{3b2d0b73-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{50cb32d7-6269-4549-ad95-3857bb3bbffe}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 02cbd7942e481af573975b19725624516ec325e5d9f28d2945525867bf5b2175
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/5824-22-0x0000000000630000-0x000000000064E000-memory.dmp

          memory/5824-23-0x0000000005770000-0x0000000005D2A000-memory.dmp

          memory/5824-24-0x00000000051B0000-0x000000000524C000-memory.dmp

          memory/5824-25-0x0000000006480000-0x00000000064D0000-memory.dmp

          memory/5824-26-0x00000000067A0000-0x0000000006962000-memory.dmp

          memory/5824-27-0x0000000006670000-0x0000000006702000-memory.dmp

          memory/5824-28-0x0000000006610000-0x000000000661A000-memory.dmp