Resubmissions

05-10-2024 21:56

241005-1tvy7stfql 10

05-10-2024 21:40

241005-1jlb1stcrp 10

Analysis

  • max time kernel
    299s
  • max time network
    300s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-10-2024 21:40

General

  • Target

    remcos_a.exe

  • Size

    429KB

  • MD5

    d326632e1d027013114bb958480e95a2

  • SHA1

    10166c50d433cc0f8f58029adb440478729e9fef

  • SHA256

    ae796ccd550f13ec200f3f85cd6b74bbe4ec5dc340433df02ac5ae31abae292e

  • SHA512

    4c8da9780cf7a330886847f791d9e4946636b7b649941121082740331bd17283d23b9931202d4be91fe54ecd069a8f16ea74b51f873e2164c4adb85e281cf63f

  • SSDEEP

    6144:SvRscHtVzjwIRFzJZ2p26+jFWXYnj9iT2ebvXmUcCqkmAO2rjXH7ycDN3:SvRs4OIm2hWX4U2ebvRUAr7733

Malware Config

Signatures

  • HawkEye

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

  • 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:2800
    • 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:4576

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    84KB

    MD5

    a5e6a7c8a8a3cc5bc4c2527ce023991f

    SHA1

    4953ee0f240f2b0ee49e92e8550fe4d363908b24

    SHA256

    ab88cebb19eb8874988dd2b675bf9a12e0b3e4adafade5fb152cb8ed490734ab

    SHA512

    bf7e718b4bc06f0a67290b911ff08f917186dd2010b9f584f214e566ea8f27ebcb8ed15f8fdb47b024515fb7718a44ba70128347505765865c30a82430550b74

  • memory/2800-40-0x0000000010000000-0x0000000010006000-memory.dmp

    Filesize

    24KB

  • memory/2800-37-0x0000000010000000-0x0000000010006000-memory.dmp

    Filesize

    24KB

  • memory/2800-39-0x0000000010000000-0x0000000010006000-memory.dmp

    Filesize

    24KB

  • memory/2800-30-0x0000000004260000-0x0000000004485000-memory.dmp

    Filesize

    2.1MB

  • memory/4576-10-0x0000000002E30000-0x0000000002E31000-memory.dmp

    Filesize

    4KB

  • memory/4576-3-0x0000000002E30000-0x0000000002E31000-memory.dmp

    Filesize

    4KB

  • memory/4576-9-0x0000000002E30000-0x0000000002E31000-memory.dmp

    Filesize

    4KB

  • memory/4576-8-0x0000000002E30000-0x0000000002E31000-memory.dmp

    Filesize

    4KB

  • memory/4576-7-0x0000000002E30000-0x0000000002E31000-memory.dmp

    Filesize

    4KB

  • memory/4576-11-0x0000000002E30000-0x0000000002E31000-memory.dmp

    Filesize

    4KB

  • memory/4576-12-0x0000000002E30000-0x0000000002E31000-memory.dmp

    Filesize

    4KB

  • memory/4576-13-0x0000000002E30000-0x0000000002E31000-memory.dmp

    Filesize

    4KB

  • memory/4576-1-0x0000000002E30000-0x0000000002E31000-memory.dmp

    Filesize

    4KB

  • memory/4576-2-0x0000000002E30000-0x0000000002E31000-memory.dmp

    Filesize

    4KB