Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-08-2024 13:52

General

  • Target

    Heatecholdings PO #50927.bat.exe

  • Size

    1.1MB

  • MD5

    feefffb2f85e6449769501809c3da84c

  • SHA1

    e8841eb6afd72c1487ec5323a5bc4f37bfae0dcf

  • SHA256

    b778e6e8c6b8265fff7a08768f5f1364ad81c68184902032589eb1e4b67df244

  • SHA512

    83a4c56f10148660c5c528f1b637dc40ffd1337a87be2f50161813c9d36641a48cf7babf8d0dfea2414f38da43a95529c8fe00e8c135243b380ea518496e9457

  • SSDEEP

    24576:hNDsYdZxwZQSkazcndb4MeFCu5+eADOWWiKDZbD0E+ou3x9+rreMoB:7teZExndpegSgLk/0E+h3L+rW

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

65.21.66.222:9821

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-LDQ8V0

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • 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 2 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 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: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe
    "C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1152
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2480
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NUKXaCFNwRYYxi.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4112
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NUKXaCFNwRYYxi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAB5E.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:368
    • C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe
      "C:\Users\Admin\AppData\Local\Temp\Heatecholdings PO #50927.bat.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4276
  • 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 --field-trial-handle=4400,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=3036 /prefetch:8
    1⤵
      PID:4388

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      f9c130aee58e7e0075c6c9c371284683

      SHA1

      170a06f84d59c5101b1638c87e54e5a0b5af7385

      SHA256

      c06639c9e45585782fa5fc82b25d19caae64d22d3fd08b55f059f2c07bb62c51

      SHA512

      3df7fe3b5a6397c72fbf5a76cb5ee2ec3be43cc979ea03b0991a666504605238438fd1cf207e861d76a06a2c52664b52b678e991d7a04824c7d53c24dcd37a96

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2oa1lqgq.zma.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpAB5E.tmp

      Filesize

      1KB

      MD5

      6b104465920dc740c87ed557ea6a0c2b

      SHA1

      64001d088c23a70567ac6575c5e62edab30657f9

      SHA256

      91d5e569170600259ae99bcb6f8c6c01b65ad90f5dfe8ee99949b6621747aa77

      SHA512

      e4e01425656bae986f1585a822f080c8b94b177a7e65485aa107a83d32aebbb35e5545675c27001d78c116dd89d2315802ba8336c871d0f90496a6279f957af6

    • memory/1152-4-0x0000000004B70000-0x0000000004B7A000-memory.dmp

      Filesize

      40KB

    • memory/1152-5-0x0000000075330000-0x0000000075AE0000-memory.dmp

      Filesize

      7.7MB

    • memory/1152-6-0x0000000006220000-0x000000000623E000-memory.dmp

      Filesize

      120KB

    • memory/1152-7-0x0000000005D80000-0x0000000005D96000-memory.dmp

      Filesize

      88KB

    • memory/1152-8-0x0000000008500000-0x00000000085BE000-memory.dmp

      Filesize

      760KB

    • memory/1152-9-0x000000000B660000-0x000000000B6FC000-memory.dmp

      Filesize

      624KB

    • memory/1152-10-0x000000007533E000-0x000000007533F000-memory.dmp

      Filesize

      4KB

    • memory/1152-3-0x0000000004BC0000-0x0000000004C52000-memory.dmp

      Filesize

      584KB

    • memory/1152-2-0x00000000050D0000-0x0000000005674000-memory.dmp

      Filesize

      5.6MB

    • memory/1152-16-0x0000000075330000-0x0000000075AE0000-memory.dmp

      Filesize

      7.7MB

    • memory/1152-0-0x000000007533E000-0x000000007533F000-memory.dmp

      Filesize

      4KB

    • memory/1152-51-0x0000000075330000-0x0000000075AE0000-memory.dmp

      Filesize

      7.7MB

    • memory/1152-1-0x0000000000070000-0x0000000000180000-memory.dmp

      Filesize

      1.1MB

    • memory/2480-52-0x0000000005BE0000-0x0000000005C2C000-memory.dmp

      Filesize

      304KB

    • memory/2480-17-0x0000000004D80000-0x00000000053A8000-memory.dmp

      Filesize

      6.2MB

    • memory/2480-23-0x0000000005450000-0x00000000054B6000-memory.dmp

      Filesize

      408KB

    • memory/2480-22-0x00000000053B0000-0x00000000053D2000-memory.dmp

      Filesize

      136KB

    • memory/2480-96-0x0000000075330000-0x0000000075AE0000-memory.dmp

      Filesize

      7.7MB

    • memory/2480-20-0x0000000075330000-0x0000000075AE0000-memory.dmp

      Filesize

      7.7MB

    • memory/2480-36-0x0000000005530000-0x0000000005884000-memory.dmp

      Filesize

      3.3MB

    • memory/2480-15-0x0000000002240000-0x0000000002276000-memory.dmp

      Filesize

      216KB

    • memory/2480-24-0x00000000054C0000-0x0000000005526000-memory.dmp

      Filesize

      408KB

    • memory/2480-89-0x0000000007180000-0x0000000007188000-memory.dmp

      Filesize

      32KB

    • memory/2480-88-0x00000000071A0000-0x00000000071BA000-memory.dmp

      Filesize

      104KB

    • memory/2480-50-0x0000000005B30000-0x0000000005B4E000-memory.dmp

      Filesize

      120KB

    • memory/2480-19-0x0000000075330000-0x0000000075AE0000-memory.dmp

      Filesize

      7.7MB

    • memory/2480-18-0x0000000075330000-0x0000000075AE0000-memory.dmp

      Filesize

      7.7MB

    • memory/2480-86-0x0000000007090000-0x000000000709E000-memory.dmp

      Filesize

      56KB

    • memory/2480-82-0x0000000006E60000-0x0000000006E7A000-memory.dmp

      Filesize

      104KB

    • memory/2480-81-0x00000000074A0000-0x0000000007B1A000-memory.dmp

      Filesize

      6.5MB

    • memory/2480-60-0x000000006FE00000-0x000000006FE4C000-memory.dmp

      Filesize

      304KB

    • memory/4112-87-0x0000000007870000-0x0000000007884000-memory.dmp

      Filesize

      80KB

    • memory/4112-59-0x000000006FE00000-0x000000006FE4C000-memory.dmp

      Filesize

      304KB

    • memory/4112-80-0x00000000074F0000-0x0000000007593000-memory.dmp

      Filesize

      652KB

    • memory/4112-58-0x00000000068D0000-0x0000000006902000-memory.dmp

      Filesize

      200KB

    • memory/4112-95-0x0000000075330000-0x0000000075AE0000-memory.dmp

      Filesize

      7.7MB

    • memory/4112-21-0x0000000075330000-0x0000000075AE0000-memory.dmp

      Filesize

      7.7MB

    • memory/4112-83-0x00000000076A0000-0x00000000076AA000-memory.dmp

      Filesize

      40KB

    • memory/4112-84-0x00000000078B0000-0x0000000007946000-memory.dmp

      Filesize

      600KB

    • memory/4112-85-0x0000000007830000-0x0000000007841000-memory.dmp

      Filesize

      68KB

    • memory/4112-78-0x00000000068B0000-0x00000000068CE000-memory.dmp

      Filesize

      120KB

    • memory/4276-49-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-97-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-53-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-42-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-43-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-54-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-55-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-48-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-98-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-99-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-100-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-101-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-102-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-103-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB

    • memory/4276-104-0x0000000000400000-0x000000000047F000-memory.dmp

      Filesize

      508KB