Analysis

  • max time kernel
    91s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20/04/2022, 02:14

General

  • Target
    6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d.exe
  • Size 886KB
  • Sample220420-cn7h2sdcdm
  • SHA256 6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main Payload 1 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 42 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 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d.exe
    "C:\Users\Admin\AppData\Local\Temp\6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3104
    • C:\Users\Admin\AppData\Local\Temp\6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d.exe
      "C:\Users\Admin\AppData\Local\Temp\6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d.exe"
      2⤵
        PID:2592
      • C:\Users\Admin\AppData\Local\Temp\6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d.exe
        "C:\Users\Admin\AppData\Local\Temp\6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d.exe"
        2⤵
        • Checks computer location settings
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:3064
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d.exe'
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5096

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\6f1276174813e960a88fc24b008d1263b87ef1a6165e8f54883536ae389d736d.exe.log
          • Size 1KB
          • SHA256 c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553
          • MD5 SHA1 SHA512

          memory/3064-141-0x0000000006E80000-0x0000000006ED0000-memory.dmp

          memory/3064-140-0x0000000006520000-0x0000000006586000-memory.dmp

          memory/3064-138-0x0000000000400000-0x0000000000486000-memory.dmp

          memory/3104-135-0x0000000005250000-0x00000000052A6000-memory.dmp

          memory/3104-130-0x00000000006B0000-0x0000000000794000-memory.dmp

          memory/3104-134-0x0000000005130000-0x000000000513A000-memory.dmp

          memory/3104-133-0x00000000052F0000-0x0000000005382000-memory.dmp

          memory/3104-132-0x0000000005800000-0x0000000005DA4000-memory.dmp

          memory/3104-131-0x0000000005140000-0x00000000051DC000-memory.dmp

          memory/5096-143-0x0000000002FA0000-0x0000000002FD6000-memory.dmp

          memory/5096-144-0x0000000005AC0000-0x00000000060E8000-memory.dmp

          memory/5096-145-0x0000000005900000-0x0000000005922000-memory.dmp

          memory/5096-146-0x00000000059A0000-0x0000000005A06000-memory.dmp

          memory/5096-147-0x00000000068D0000-0x00000000068EE000-memory.dmp

          memory/5096-148-0x0000000007F50000-0x00000000085CA000-memory.dmp

          memory/5096-149-0x0000000006DD0000-0x0000000006DEA000-memory.dmp

          memory/5096-150-0x0000000007B70000-0x0000000007C06000-memory.dmp

          memory/5096-151-0x0000000006E90000-0x0000000006EB2000-memory.dmp