Analysis

  • max time kernel
    173s
  • max time network
    181s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    18-04-2022 12:40

General

  • Target

    106a72ea42836e5d06b29fe9f93294b6a14c33ff31669089851666645b176c8b.exe

  • Size

    1.1MB

  • MD5

    4a60e245aff468c7b6bed7dec3b877e3

  • SHA1

    6e215e7b54b4b7f412dd8735ca87a22284e67abc

  • SHA256

    106a72ea42836e5d06b29fe9f93294b6a14c33ff31669089851666645b176c8b

  • SHA512

    17d243a02365bc33e0b3edecf0cd1569b51bfa5bbc5ace6fd0c56063ac833411eddc575dced657dc1a0fa4bc867dabec19369b4bd92e97e7b6453a6baad76aad

Malware Config

Signatures

  • MassLogger

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

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

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

  • Loads dropped DLL 3 IoCs
  • 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
  • Adds Run key to start application 2 TTPs 2 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\106a72ea42836e5d06b29fe9f93294b6a14c33ff31669089851666645b176c8b.exe
    "C:\Users\Admin\AppData\Local\Temp\106a72ea42836e5d06b29fe9f93294b6a14c33ff31669089851666645b176c8b.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4652
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v winpro /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Documents\winpro.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:116
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v winpro /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Documents\winpro.exe"
        3⤵
        • Adds Run key to start application
        PID:4144
    • C:\Users\Admin\Documents\winpro.exe
      "C:\Users\Admin\Documents\winpro.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3668
      • C:\Users\Admin\Documents\winpro.exe
        "C:\Users\Admin\Documents\winpro.exe"
        3⤵
        • Executes dropped EXE
        • 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:2228

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    1KB

    MD5

    fc13935f3038bdde6cb484249fbff668

    SHA1

    a4c32013e6d59bf1eb1a5119456965de191e62b8

    SHA256

    de064c569a5f4edaf2da91d7bcb82bab06a35190b699cede1da0aa616a23d676

    SHA512

    5817275af0f8a48eb1e008d39f62fb3582db9a2d21a806e9f9ee36fbfd799fb17e91f0e3686f4b236724fe78f14ae7f40cd3755f0ec0fb6734ce42f996b798f7

  • C:\Users\Admin\AppData\Local\Temp\b35bc50e-fc56-4239-a7d0-bb79118b31c9\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\AppData\Local\Temp\e34dd831-6d57-4d92-81ec-c008864dca6e\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\AppData\Local\Temp\e34dd831-6d57-4d92-81ec-c008864dca6e\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\AppData\Local\Temp\e34dd831-6d57-4d92-81ec-c008864dca6e\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\Documents\winpro.exe

    Filesize

    1.1MB

    MD5

    4a60e245aff468c7b6bed7dec3b877e3

    SHA1

    6e215e7b54b4b7f412dd8735ca87a22284e67abc

    SHA256

    106a72ea42836e5d06b29fe9f93294b6a14c33ff31669089851666645b176c8b

    SHA512

    17d243a02365bc33e0b3edecf0cd1569b51bfa5bbc5ace6fd0c56063ac833411eddc575dced657dc1a0fa4bc867dabec19369b4bd92e97e7b6453a6baad76aad

  • C:\Users\Admin\Documents\winpro.exe

    Filesize

    1.1MB

    MD5

    4a60e245aff468c7b6bed7dec3b877e3

    SHA1

    6e215e7b54b4b7f412dd8735ca87a22284e67abc

    SHA256

    106a72ea42836e5d06b29fe9f93294b6a14c33ff31669089851666645b176c8b

    SHA512

    17d243a02365bc33e0b3edecf0cd1569b51bfa5bbc5ace6fd0c56063ac833411eddc575dced657dc1a0fa4bc867dabec19369b4bd92e97e7b6453a6baad76aad

  • C:\Users\Admin\Documents\winpro.exe

    Filesize

    1.1MB

    MD5

    4a60e245aff468c7b6bed7dec3b877e3

    SHA1

    6e215e7b54b4b7f412dd8735ca87a22284e67abc

    SHA256

    106a72ea42836e5d06b29fe9f93294b6a14c33ff31669089851666645b176c8b

    SHA512

    17d243a02365bc33e0b3edecf0cd1569b51bfa5bbc5ace6fd0c56063ac833411eddc575dced657dc1a0fa4bc867dabec19369b4bd92e97e7b6453a6baad76aad

  • memory/116-135-0x0000000000000000-mapping.dmp

  • memory/2228-145-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2228-149-0x0000000007190000-0x00000000071E0000-memory.dmp

    Filesize

    320KB

  • memory/2228-144-0x0000000000000000-mapping.dmp

  • memory/2228-152-0x0000000002F03000-0x0000000002F05000-memory.dmp

    Filesize

    8KB

  • memory/2228-151-0x0000000007180000-0x000000000718A000-memory.dmp

    Filesize

    40KB

  • memory/2228-150-0x0000000007280000-0x000000000731C000-memory.dmp

    Filesize

    624KB

  • memory/2228-148-0x0000000006960000-0x00000000069C6000-memory.dmp

    Filesize

    408KB

  • memory/3668-137-0x0000000000000000-mapping.dmp

  • memory/3668-142-0x0000000073620000-0x00000000736A9000-memory.dmp

    Filesize

    548KB

  • memory/4144-136-0x0000000000000000-mapping.dmp

  • memory/4652-134-0x00000000058E0000-0x0000000005972000-memory.dmp

    Filesize

    584KB

  • memory/4652-132-0x0000000073620000-0x00000000736A9000-memory.dmp

    Filesize

    548KB

  • memory/4652-133-0x0000000005DF0000-0x0000000006394000-memory.dmp

    Filesize

    5.6MB

  • memory/4652-130-0x0000000000290000-0x00000000003A4000-memory.dmp

    Filesize

    1.1MB