Analysis

  • max time kernel
    119s
  • max time network
    185s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    16-05-2022 13:03

General

  • Target

    a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe

  • Size

    688KB

  • MD5

    ecad32280bbd5601b22a12b8ebb7124f

  • SHA1

    beeb525154606abbf5773ad9489ab4fd35089bcf

  • SHA256

    a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5

  • SHA512

    9d5423a9fefc562fdf9b137a1810be1115751b5b38495af8e38154229ea1278321ca4951e72cd9bd1625e6ea55f2a928a635d9c8c83a08c3cc3a3dea1406d16c

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: EnumeratesProcesses 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
    "C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2672
    • C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
      "C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe"
      2⤵
        PID:544
      • C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
        "C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe"
        2⤵
        • Checks computer location settings
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:2216
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe'
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3628

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe.log

      Filesize

      1KB

      MD5

      17573558c4e714f606f997e5157afaac

      SHA1

      13e16e9415ceef429aaf124139671ebeca09ed23

      SHA256

      c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

      SHA512

      f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

    • memory/2216-142-0x0000000007070000-0x00000000070C0000-memory.dmp

      Filesize

      320KB

    • memory/2216-138-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2216-140-0x00000000058D0000-0x0000000005936000-memory.dmp

      Filesize

      408KB

    • memory/2672-131-0x00000000053E0000-0x000000000547C000-memory.dmp

      Filesize

      624KB

    • memory/2672-132-0x0000000005A30000-0x0000000005FD4000-memory.dmp

      Filesize

      5.6MB

    • memory/2672-133-0x0000000005480000-0x0000000005512000-memory.dmp

      Filesize

      584KB

    • memory/2672-134-0x0000000005380000-0x000000000538A000-memory.dmp

      Filesize

      40KB

    • memory/2672-135-0x00000000056F0000-0x0000000005746000-memory.dmp

      Filesize

      344KB

    • memory/2672-130-0x0000000000930000-0x00000000009E2000-memory.dmp

      Filesize

      712KB

    • memory/3628-144-0x0000000004DE0000-0x0000000005408000-memory.dmp

      Filesize

      6.2MB

    • memory/3628-149-0x0000000070010000-0x000000007005C000-memory.dmp

      Filesize

      304KB

    • memory/3628-145-0x00000000054C0000-0x00000000054E2000-memory.dmp

      Filesize

      136KB

    • memory/3628-146-0x0000000005590000-0x00000000055F6000-memory.dmp

      Filesize

      408KB

    • memory/3628-147-0x0000000005C40000-0x0000000005C5E000-memory.dmp

      Filesize

      120KB

    • memory/3628-148-0x0000000006210000-0x0000000006242000-memory.dmp

      Filesize

      200KB

    • memory/3628-143-0x0000000002380000-0x00000000023B6000-memory.dmp

      Filesize

      216KB

    • memory/3628-150-0x00000000061F0000-0x000000000620E000-memory.dmp

      Filesize

      120KB

    • memory/3628-151-0x0000000007590000-0x0000000007C0A000-memory.dmp

      Filesize

      6.5MB

    • memory/3628-152-0x0000000006F50000-0x0000000006F6A000-memory.dmp

      Filesize

      104KB

    • memory/3628-153-0x0000000006FC0000-0x0000000006FCA000-memory.dmp

      Filesize

      40KB

    • memory/3628-154-0x00000000071D0000-0x0000000007266000-memory.dmp

      Filesize

      600KB

    • memory/3628-155-0x0000000007190000-0x000000000719E000-memory.dmp

      Filesize

      56KB

    • memory/3628-156-0x00000000072A0000-0x00000000072BA000-memory.dmp

      Filesize

      104KB

    • memory/3628-157-0x0000000007280000-0x0000000007288000-memory.dmp

      Filesize

      32KB