Analysis

  • max time kernel
    122s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    02/12/2020, 15:30

General

  • Target

    52b1565bb8a50701d219f361929ea870.exe

  • Size

    650KB

  • MD5

    52b1565bb8a50701d219f361929ea870

  • SHA1

    aa6e4ce4342cb755a2fe894288534a04bc23f367

  • SHA256

    9b1d91114fdc8c143afbedc2475e69a539c81d19eeee4ba9301da81b794efaf7

  • SHA512

    6a9028a90574cb6f6431395697b4a23b7b67cb69738a2d3b29359b7c91a7e93c0c10d8c120699da51bbf9b216d9da75361341749a381ab2ed6036e25237c1106

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main Payload 4 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Beds Protector Packer 1 IoCs

    Detects Beds Protector packer used to load .NET malware.

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

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

  • Drops startup file 2 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • 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
  • Drops file in Program Files directory 85 IoCs
  • Drops file in Windows directory 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 43 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\52b1565bb8a50701d219f361929ea870.exe
    "C:\Users\Admin\AppData\Local\Temp\52b1565bb8a50701d219f361929ea870.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Users\Admin\AppData\Local\Temp\3582-490\52b1565bb8a50701d219f361929ea870.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\52b1565bb8a50701d219f361929ea870.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1168
      • C:\Users\Admin\AppData\Local\Temp\3582-490\52b1565bb8a50701d219f361929ea870.exe
        "C:\Users\Admin\AppData\Local\Temp\3582-490\52b1565bb8a50701d219f361929ea870.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1928
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\3582-490\52b1565bb8a50701d219f361929ea870.exe'
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:568

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/568-28-0x00000000025D0000-0x00000000025D1000-memory.dmp

    Filesize

    4KB

  • memory/568-37-0x0000000005730000-0x0000000005731000-memory.dmp

    Filesize

    4KB

  • memory/568-61-0x0000000006310000-0x0000000006311000-memory.dmp

    Filesize

    4KB

  • memory/568-60-0x0000000006300000-0x0000000006301000-memory.dmp

    Filesize

    4KB

  • memory/568-46-0x00000000055D0000-0x00000000055D1000-memory.dmp

    Filesize

    4KB

  • memory/568-45-0x0000000006240000-0x0000000006241000-memory.dmp

    Filesize

    4KB

  • memory/568-38-0x0000000005790000-0x0000000005791000-memory.dmp

    Filesize

    4KB

  • memory/568-32-0x0000000005670000-0x0000000005671000-memory.dmp

    Filesize

    4KB

  • memory/568-29-0x0000000004950000-0x0000000004951000-memory.dmp

    Filesize

    4KB

  • memory/568-25-0x0000000073AF0000-0x00000000741DE000-memory.dmp

    Filesize

    6.9MB

  • memory/568-26-0x0000000001D10000-0x0000000001D11000-memory.dmp

    Filesize

    4KB

  • memory/568-27-0x0000000004A20000-0x0000000004A21000-memory.dmp

    Filesize

    4KB

  • memory/1168-9-0x0000000000AB0000-0x0000000000B3A000-memory.dmp

    Filesize

    552KB

  • memory/1168-6-0x0000000073AF0000-0x00000000741DE000-memory.dmp

    Filesize

    6.9MB

  • memory/1168-7-0x0000000000D10000-0x0000000000D11000-memory.dmp

    Filesize

    4KB

  • memory/1928-21-0x0000000073AF0000-0x00000000741DE000-memory.dmp

    Filesize

    6.9MB

  • memory/1928-20-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1928-19-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1928-16-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB