Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-05-2024 10:57

General

  • Target

    3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe

  • Size

    1.0MB

  • MD5

    1b968f62b9672831c42e1cc776473a4b

  • SHA1

    14634650057f53408c9da09215bed0b08eb1f287

  • SHA256

    3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772

  • SHA512

    53e58d80069bfa0159c88598d544ff009c6823150b886e606b8ce00bc3d1c8619c8ce495fc564e5fc6d397a0c461d707c30684ee2d622970230a84b40401ab59

  • SSDEEP

    24576:mF1lOimK6SfT7rEu/hXpOfTi0kIU4y41sYBpJ312Zq:IZfou/hXYf3Lt11TJl2U

Malware Config

Extracted

Family

remcos

Botnet

STHost

C2

89.249.73.162:2479

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-TH3UQH

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
    "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4848
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\siRiSxOKgeg.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4628
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\siRiSxOKgeg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8B91.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4480
    • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
      "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:4116
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3952 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:5024

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      144B

      MD5

      9eaeba20bb3fb5d53a5a08eff553016f

      SHA1

      cd3f18a2ca20e5ea0362b0162a7a0b9515232fbf

      SHA256

      b576db0009085c605def34cebbbdf012ee521e50bfa0cfb4495c769e1392cb5a

      SHA512

      495ab743fafe2caaf6e985dc22720274df164d9fdffcc508f15cde7d4af6ac68e714d41f1e24179871d2e64ffbf546912a9dd4c721042eb7f46b97dddce551e3

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ss2nqkfx.prz.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp8B91.tmp

      Filesize

      1KB

      MD5

      37487cb02e325024c1b37a1aee05e457

      SHA1

      d9ce40abd54ab958ba2b48e22e6228d8f77e95e8

      SHA256

      2f33599469bdf5108b4d66ddb516120791168c19f5902198205bc4f25afedad4

      SHA512

      16252b4c98c47fedcbd71321a9b3a18f7e147b182fedb9ea5f1f4c36f070e7c9ff088da6e2b035d980ae13dc73c3edf31e8f79e7e38b49b9e90f7e7801b73cec

    • memory/4116-78-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-98-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-91-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-85-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-84-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-97-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-79-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-24-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-77-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-92-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-29-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-31-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-30-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-103-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-22-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-26-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4116-23-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4628-34-0x0000000005890000-0x00000000058F6000-memory.dmp

      Filesize

      408KB

    • memory/4628-64-0x0000000007300000-0x000000000730A000-memory.dmp

      Filesize

      40KB

    • memory/4628-19-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4628-18-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4628-17-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4628-74-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4628-33-0x0000000004FB0000-0x0000000004FD2000-memory.dmp

      Filesize

      136KB

    • memory/4628-71-0x00000000075D0000-0x00000000075D8000-memory.dmp

      Filesize

      32KB

    • memory/4628-35-0x0000000005900000-0x0000000005966000-memory.dmp

      Filesize

      408KB

    • memory/4628-16-0x0000000004A00000-0x0000000004A36000-memory.dmp

      Filesize

      216KB

    • memory/4628-45-0x0000000005970000-0x0000000005CC4000-memory.dmp

      Filesize

      3.3MB

    • memory/4628-46-0x0000000005F80000-0x0000000005F9E000-memory.dmp

      Filesize

      120KB

    • memory/4628-47-0x0000000006520000-0x000000000656C000-memory.dmp

      Filesize

      304KB

    • memory/4628-49-0x0000000006570000-0x00000000065A2000-memory.dmp

      Filesize

      200KB

    • memory/4628-50-0x0000000071500000-0x000000007154C000-memory.dmp

      Filesize

      304KB

    • memory/4628-60-0x0000000006500000-0x000000000651E000-memory.dmp

      Filesize

      120KB

    • memory/4628-61-0x0000000007160000-0x0000000007203000-memory.dmp

      Filesize

      652KB

    • memory/4628-62-0x00000000078D0000-0x0000000007F4A000-memory.dmp

      Filesize

      6.5MB

    • memory/4628-63-0x0000000007290000-0x00000000072AA000-memory.dmp

      Filesize

      104KB

    • memory/4628-21-0x0000000005070000-0x0000000005698000-memory.dmp

      Filesize

      6.2MB

    • memory/4628-65-0x00000000074F0000-0x0000000007586000-memory.dmp

      Filesize

      600KB

    • memory/4628-66-0x00000000074B0000-0x00000000074C1000-memory.dmp

      Filesize

      68KB

    • memory/4628-68-0x00000000074E0000-0x00000000074EE000-memory.dmp

      Filesize

      56KB

    • memory/4628-69-0x0000000007590000-0x00000000075A4000-memory.dmp

      Filesize

      80KB

    • memory/4628-70-0x00000000075E0000-0x00000000075FA000-memory.dmp

      Filesize

      104KB

    • memory/4848-7-0x0000000006FC0000-0x0000000006FD4000-memory.dmp

      Filesize

      80KB

    • memory/4848-32-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4848-14-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4848-10-0x0000000008290000-0x000000000832C000-memory.dmp

      Filesize

      624KB

    • memory/4848-9-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

      Filesize

      4KB

    • memory/4848-8-0x0000000009A10000-0x0000000009AD0000-memory.dmp

      Filesize

      768KB

    • memory/4848-0-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

      Filesize

      4KB

    • memory/4848-6-0x0000000006EA0000-0x0000000006EC0000-memory.dmp

      Filesize

      128KB

    • memory/4848-5-0x0000000005700000-0x000000000570A000-memory.dmp

      Filesize

      40KB

    • memory/4848-4-0x0000000074C10000-0x00000000753C0000-memory.dmp

      Filesize

      7.7MB

    • memory/4848-3-0x0000000005650000-0x00000000056E2000-memory.dmp

      Filesize

      584KB

    • memory/4848-2-0x0000000005C00000-0x00000000061A4000-memory.dmp

      Filesize

      5.6MB

    • memory/4848-1-0x0000000000B40000-0x0000000000C46000-memory.dmp

      Filesize

      1.0MB