Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-05-2024 10:58

General

  • Target

    6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe

  • Size

    1.1MB

  • MD5

    6e457e014242287aa8649c939dc3bae0

  • SHA1

    2492dbc016d47b2bd5b6889b101d2061cd953cc8

  • SHA256

    20f95b1751f2d7a5ecd7f8eb968cc5decb339f8fbc49c9515278ebfedd1ad159

  • SHA512

    8166c207e72da75a87b52e15ccd18cd827ec4d5623414866a605c2129ef473c78829170c999b8017f81995bcf4a5a8833da89b720921ab71a1d4b5c6242700ef

  • SSDEEP

    24576:iFBrny7d7eqq2Z32pi/ZHnJuPjz+l63c2:i4kV2h2pi/zyKej

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main payload 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 5 IoCs

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

  • 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
  • NTFS ADS 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 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4552
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:4056
      • C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
        "C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1664
        • C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
          "C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:1028
        • C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
          "C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe" 2 1028 240613875
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:4720

Network

MITRE ATT&CK Matrix ATT&CK v13

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

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

  • C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
    Filesize

    1.1MB

    MD5

    6e457e014242287aa8649c939dc3bae0

    SHA1

    2492dbc016d47b2bd5b6889b101d2061cd953cc8

    SHA256

    20f95b1751f2d7a5ecd7f8eb968cc5decb339f8fbc49c9515278ebfedd1ad159

    SHA512

    8166c207e72da75a87b52e15ccd18cd827ec4d5623414866a605c2129ef473c78829170c999b8017f81995bcf4a5a8833da89b720921ab71a1d4b5c6242700ef

  • memory/1028-19-0x0000000000400000-0x0000000000541000-memory.dmp
    Filesize

    1.3MB

  • memory/1028-40-0x00000000052A0000-0x0000000005306000-memory.dmp
    Filesize

    408KB

  • memory/1028-46-0x00000000076E0000-0x0000000007730000-memory.dmp
    Filesize

    320KB

  • memory/1028-44-0x0000000006850000-0x000000000685A000-memory.dmp
    Filesize

    40KB

  • memory/1028-25-0x0000000000400000-0x0000000000541000-memory.dmp
    Filesize

    1.3MB

  • memory/1028-55-0x0000000000400000-0x0000000000541000-memory.dmp
    Filesize

    1.3MB

  • memory/1028-47-0x0000000006830000-0x0000000006844000-memory.dmp
    Filesize

    80KB

  • memory/1028-37-0x0000000004C10000-0x00000000051B4000-memory.dmp
    Filesize

    5.6MB

  • memory/1028-43-0x0000000005460000-0x00000000054F2000-memory.dmp
    Filesize

    584KB

  • memory/1028-24-0x00000000009B0000-0x0000000000A4A000-memory.dmp
    Filesize

    616KB

  • memory/1028-22-0x0000000000400000-0x0000000000541000-memory.dmp
    Filesize

    1.3MB

  • memory/1028-39-0x0000000004BA0000-0x0000000004BE4000-memory.dmp
    Filesize

    272KB

  • memory/1028-23-0x00000000009B0000-0x0000000000A4A000-memory.dmp
    Filesize

    616KB

  • memory/1028-16-0x0000000000400000-0x0000000000541000-memory.dmp
    Filesize

    1.3MB

  • memory/1028-20-0x0000000000400000-0x0000000000541000-memory.dmp
    Filesize

    1.3MB

  • memory/1028-38-0x00000000051C0000-0x000000000525C000-memory.dmp
    Filesize

    624KB

  • memory/1664-26-0x0000000000400000-0x0000000000517000-memory.dmp
    Filesize

    1.1MB

  • memory/1664-15-0x0000000002380000-0x0000000002381000-memory.dmp
    Filesize

    4KB

  • memory/1664-12-0x00000000006D0000-0x00000000006D1000-memory.dmp
    Filesize

    4KB

  • memory/4056-5-0x0000000000CF0000-0x0000000000CF1000-memory.dmp
    Filesize

    4KB

  • memory/4552-0-0x00000000006D0000-0x00000000006D1000-memory.dmp
    Filesize

    4KB

  • memory/4552-4-0x0000000000400000-0x0000000000517000-memory.dmp
    Filesize

    1.1MB

  • memory/4552-2-0x00000000022B0000-0x00000000022C0000-memory.dmp
    Filesize

    64KB

  • memory/4552-3-0x00000000022E0000-0x00000000022E1000-memory.dmp
    Filesize

    4KB

  • memory/4552-1-0x00000000022B0000-0x00000000022C0000-memory.dmp
    Filesize

    64KB

  • memory/4720-56-0x0000000000400000-0x0000000000517000-memory.dmp
    Filesize

    1.1MB