Analysis

  • max time kernel
    152s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    03-05-2022 14:58

General

  • Target

    chibyke03.exe

  • Size

    1.0MB

  • MD5

    d9d969b4d51b61c1f2e62305fcb8ba1b

  • SHA1

    f98d039477e9c5f531a7f809dc7686e69ed5aff1

  • SHA256

    8e351736ae4bff938f1b59b396f039a6a281c4b8401f918f6b7b52b5c574d330

  • SHA512

    95f7b868951e3bc9867478df083b2fb43807ef053dcee05c6bd3e3d78d466b885309a7c2a5b65bfc8b41bef35ec89fa01edeead4f7cf63b82103677812cfa912

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main Payload 2 IoCs
  • 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\chibyke03.exe
    "C:\Users\Admin\AppData\Local\Temp\chibyke03.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:632
    • C:\Users\Admin\AppData\Local\Temp\chibyke03.exe
      "C:\Users\Admin\AppData\Local\Temp\chibyke03.exe"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1456
    • C:\Users\Admin\AppData\Local\Temp\chibyke03.exe
      "C:\Users\Admin\AppData\Local\Temp\chibyke03.exe" 2 1456 7086595
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1124

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/632-54-0x0000000075391000-0x0000000075393000-memory.dmp

    Filesize

    8KB

  • memory/632-56-0x00000000003D0000-0x00000000003E2000-memory.dmp

    Filesize

    72KB

  • memory/1124-58-0x0000000000000000-mapping.dmp

  • memory/1456-57-0x000000000051DE60-mapping.dmp

  • memory/1456-60-0x0000000001DE0000-0x0000000001E66000-memory.dmp

    Filesize

    536KB

  • memory/1456-61-0x0000000001DE0000-0x0000000001E66000-memory.dmp

    Filesize

    536KB

  • memory/1456-65-0x0000000004C55000-0x0000000004C66000-memory.dmp

    Filesize

    68KB