Resubmissions

01-11-2024 17:55

241101-whv3lsvmgn 10

28-10-2024 13:51

241028-q5sywaykgr 10

Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-10-2024 13:51

General

  • Target

    remcos_a.exe

  • Size

    430KB

  • MD5

    6e497aa5f3372a06bb6f94ebf81337e6

  • SHA1

    beb3485417aad2c57b6c8943a6f47929dceba82a

  • SHA256

    660df70883cc41bbf47694496b03634471b05befea24cdf24d36ae4ee3a55e77

  • SHA512

    2d10a944f2cd118aa5e67353aa1f109e1ebd2d9810b45996afb86d458de87f96e3ba69014f560589c764a5f6a37fac854c67aaad9550f47fd17ce320315ae2d5

  • SSDEEP

    6144:KvRscHtVzjwIRFzJZ2p26+jFWXYnj9iT2ebvXmUcCqkmAO2XjXH7icDv83:KvRs4OIm2hWX4U2ebvRUAX77u3

Malware Config

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • Hawkeye family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops file in System32 directory 8 IoCs
  • 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.

  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies registry class 35 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\remcos_a.exe
    "C:\Users\Admin\AppData\Local\Temp\remcos_a.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4328
    • C:\Windows\SysWOW64\dxdiag.exe
      "C:\Windows\System32\dxdiag.exe" /t C:\Users\Admin\AppData\Local\Temp\sysinfo.txt
      2⤵
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:5088

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\sysinfo.txt

    Filesize

    84KB

    MD5

    5182cc1d8ad127d04fa2d0d51e700b62

    SHA1

    3f3b2bd787f5a17fb17e8daf831b3c5ad84883c5

    SHA256

    4cb48ad3e9abedcba9bd8fa517004ba624e981985068c43155e0de97c30751f2

    SHA512

    b614745b8ca9e76c33e0b543e7fbbe63a5a02081d7525e52492c8b787bbaf22bb34b859a2f23e61eacab608630958add4ff91553cc1ad1167426e386687e4b6b

  • memory/4328-30-0x00000000043E0000-0x0000000004605000-memory.dmp

    Filesize

    2.1MB

  • memory/5088-1-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

    Filesize

    4KB

  • memory/5088-2-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

    Filesize

    4KB

  • memory/5088-3-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

    Filesize

    4KB

  • memory/5088-9-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

    Filesize

    4KB

  • memory/5088-8-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

    Filesize

    4KB

  • memory/5088-13-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

    Filesize

    4KB

  • memory/5088-12-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

    Filesize

    4KB

  • memory/5088-11-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

    Filesize

    4KB

  • memory/5088-10-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

    Filesize

    4KB

  • memory/5088-7-0x0000000002DA0000-0x0000000002DA1000-memory.dmp

    Filesize

    4KB