Resubmissions

12-08-2024 19:06

240812-xsap4azbla 10

11-08-2024 10:57

240811-m2gjws1arh 10

Analysis

  • max time kernel
    140s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-08-2024 19:06

General

  • Target

    file.exe

  • Size

    795KB

  • MD5

    244ff9e90106994d5a14add8e8483484

  • SHA1

    42a9a0fec6267a15752beb06d838ea21eaefed75

  • SHA256

    655d4b33dd95b286d546c78a9e26e33c3b16b779d5cfb41b62250cb059ae1301

  • SHA512

    3b727ab0e410ff276688196199bb29b26d87734c85f93181784a5e4170decfc7467aa02d1c178c81e1fddd37638567af1045e9c9f1d0bb689f53e18baf03f867

  • SSDEEP

    12288:QZpTV9DFHzw7NU0EXN0c1qRcDnftLEY2D94ymrdbWF9mrgxTmta6GNfnEHLmmJ0:ipTp+kPcRIftn2D94ymp6FqgxkGFaN

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main payload 1 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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 18 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.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Modifies visibility of file extensions in Explorer
    • Checks computer location settings
    • Accesses Microsoft Outlook profiles
    • System Location Discovery: System Language Discovery
    • 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:4860
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UXABia" /XML "C:\Users\Admin\AppData\Local\Temp\tmp17F8.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1860

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp17F8.tmp

    Filesize

    1KB

    MD5

    820fb305aa04c3d0a5a084e658531833

    SHA1

    051eec6533a4f55ff9a4d306708db08c1e091d10

    SHA256

    59b958242e4512543e40f87ddbaf9dd66210dfc0c7e8c111b39f9f4e02b8df7f

    SHA512

    bf59c29d6655cf52890525df448e4fecb181dff0877694f6921ba7d76699d2b0352bc179686105902fe712555bb4c669066705caf0b1406a9f3f4fd06100ae62

  • memory/4860-8-0x0000000074880000-0x0000000075030000-memory.dmp

    Filesize

    7.7MB

  • memory/4860-3-0x0000000004C50000-0x0000000004CE2000-memory.dmp

    Filesize

    584KB

  • memory/4860-10-0x0000000007B20000-0x0000000007BBC000-memory.dmp

    Filesize

    624KB

  • memory/4860-1-0x00000000002D0000-0x000000000039C000-memory.dmp

    Filesize

    816KB

  • memory/4860-5-0x0000000074880000-0x0000000075030000-memory.dmp

    Filesize

    7.7MB

  • memory/4860-6-0x0000000004F10000-0x0000000004F18000-memory.dmp

    Filesize

    32KB

  • memory/4860-7-0x000000007488E000-0x000000007488F000-memory.dmp

    Filesize

    4KB

  • memory/4860-0-0x000000007488E000-0x000000007488F000-memory.dmp

    Filesize

    4KB

  • memory/4860-39-0x0000000074880000-0x0000000075030000-memory.dmp

    Filesize

    7.7MB

  • memory/4860-2-0x0000000005120000-0x00000000056C4000-memory.dmp

    Filesize

    5.6MB

  • memory/4860-4-0x0000000004CF0000-0x0000000004CFA000-memory.dmp

    Filesize

    40KB

  • memory/4860-14-0x0000000008600000-0x00000000086A8000-memory.dmp

    Filesize

    672KB

  • memory/4860-15-0x00000000086E0000-0x0000000008724000-memory.dmp

    Filesize

    272KB

  • memory/4860-16-0x00000000087B0000-0x0000000008816000-memory.dmp

    Filesize

    408KB

  • memory/4860-17-0x0000000074880000-0x0000000075030000-memory.dmp

    Filesize

    7.7MB

  • memory/4860-20-0x0000000074880000-0x0000000075030000-memory.dmp

    Filesize

    7.7MB

  • memory/4860-28-0x000000000A420000-0x000000000A470000-memory.dmp

    Filesize

    320KB

  • memory/4860-9-0x00000000079D0000-0x0000000007A80000-memory.dmp

    Filesize

    704KB