Analysis

  • max time kernel
    49s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    24-05-2022 18:09

General

  • Target

    kmd.exe

  • Size

    1.8MB

  • MD5

    9906e3d9a42e2053405b72c9f85b0bad

  • SHA1

    06d5be5ef404c61a41d15bab8351aed6fb9ab310

  • SHA256

    13dd79b77c2ed2ba77d509e2d3b4621e83f7105674353f7e30930e07b099bce5

  • SHA512

    ad23480af230afb2fb447aee7386da6b106bc2b375c2270b3803526cd7e83eb5cea59469dab9bc21c099d809389ebd8dc0176bb6a357b45e473d9b6774e4a062

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.wolterfan.com
  • Port:
    587
  • Username:
    marketing2@wolterfan.com
  • Password:
    @Mar123

Signatures

  • MassLogger

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

  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 1 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 15 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 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\kmd.exe
    "C:\Users\Admin\AppData\Local\Temp\kmd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Users\Admin\AppData\Local\Temp\kmd.exe
      "C:\Users\Admin\AppData\Local\Temp\kmd.exe"
      2⤵
      • Checks computer location settings
      • Loads dropped DLL
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1196

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\Costura\8E3603ED8A0381E02887C1DBBE921340\32\sqlite.interop.dll
    Filesize

    594KB

    MD5

    e81aeac387c5db32b7f9b07d15e788e0

    SHA1

    829be6eaf1cb0d82b2ddfc98272e1087f4a7a7c3

    SHA256

    44f31f99f048bfc5195937353b5207332e455bcd5a722bcfd32cacfd93f60f06

    SHA512

    cc6a96325a01c50c059706a1f4156f109e502ef9c0b0f5de209d1f52e7cc973cebc027f57ed988e9d1b8fca62746b60ee7430d608de95cdd0e5ac3cb61fbe32e

  • memory/1196-86-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-623-0x0000000006360000-0x00000000063F0000-memory.dmp
    Filesize

    576KB

  • memory/1196-58-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-59-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-624-0x00000000063F0000-0x0000000006450000-memory.dmp
    Filesize

    384KB

  • memory/1196-62-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-64-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-66-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-88-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-70-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-72-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-74-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-76-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-78-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-80-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-82-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-84-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-90-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-68-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-56-0x00000000006E2210-mapping.dmp
  • memory/1196-102-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-94-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-96-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-98-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-100-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-92-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-104-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-106-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-108-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-110-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-112-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-114-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-116-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-118-0x0000000002310000-0x000000000246E000-memory.dmp
    Filesize

    1.4MB

  • memory/1196-622-0x0000000006320000-0x0000000006364000-memory.dmp
    Filesize

    272KB

  • memory/2036-55-0x0000000000400000-0x0000000000647000-memory.dmp
    Filesize

    2.3MB

  • memory/2036-54-0x0000000075521000-0x0000000075523000-memory.dmp
    Filesize

    8KB

  • memory/2036-57-0x0000000000400000-0x0000000000647000-memory.dmp
    Filesize

    2.3MB