Analysis

  • max time kernel
    147s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-05-2024 08:44

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 4 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:4908
    • 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:1452
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\siRiSxOKgeg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp615A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1252
    • C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe
      "C:\Users\Admin\AppData\Local\Temp\3dbe769bb2675de3bada40f257ce820b7356c2acb79bb3d4509d145fc9150772.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:2328

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    b8f6111fa4ba009e4beaf8cfc065c5a5

    SHA1

    58f1ec327afaf5916abac8c7c63faa17d57262d7

    SHA256

    b933d907b57578db8f26ba570616e7f0d4b7bf5f05c41d43a7634258c41de99e

    SHA512

    cd756b92d2a3a6345117d380a02b8d034d674cc3f96a1c696b6734f6b4c5eab1e73f743b82d67d3f746c728ea6b88731af5c3240325a7041826eb3d6fc0d35f4

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yardjhzs.vpx.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp615A.tmp

    Filesize

    1KB

    MD5

    509fd70b506215d5d397fae877b8190e

    SHA1

    e83732683acd7cb4f3f934615853e601b608a68d

    SHA256

    bf1e5f38ac01f680dc41ef978ed1a868ae1a86c76d9893cbfaf4844c1601add1

    SHA512

    c4ce5e346b2b89e770ab164746c14d59c328fb04fc6562e7fd5536468fe6127c37d000c0db3f0fdc12f303df512227bbe4703faaf92764008b9560b5ca1fcb0c

  • memory/1452-45-0x0000000006110000-0x000000000615C000-memory.dmp

    Filesize

    304KB

  • memory/1452-70-0x0000000074E10000-0x00000000755C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1452-47-0x00000000756A0000-0x00000000756EC000-memory.dmp

    Filesize

    304KB

  • memory/1452-46-0x0000000006FE0000-0x0000000007012000-memory.dmp

    Filesize

    200KB

  • memory/1452-67-0x0000000007680000-0x0000000007688000-memory.dmp

    Filesize

    32KB

  • memory/1452-66-0x00000000076A0000-0x00000000076BA000-memory.dmp

    Filesize

    104KB

  • memory/1452-65-0x00000000075A0000-0x00000000075B4000-memory.dmp

    Filesize

    80KB

  • memory/1452-14-0x0000000002720000-0x0000000002756000-memory.dmp

    Filesize

    216KB

  • memory/1452-15-0x0000000005150000-0x0000000005778000-memory.dmp

    Filesize

    6.2MB

  • memory/1452-16-0x0000000074E10000-0x00000000755C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1452-64-0x0000000007590000-0x000000000759E000-memory.dmp

    Filesize

    56KB

  • memory/1452-18-0x0000000005070000-0x0000000005092000-memory.dmp

    Filesize

    136KB

  • memory/1452-20-0x00000000059E0000-0x0000000005A46000-memory.dmp

    Filesize

    408KB

  • memory/1452-19-0x0000000005970000-0x00000000059D6000-memory.dmp

    Filesize

    408KB

  • memory/1452-22-0x0000000074E10000-0x00000000755C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1452-63-0x0000000007560000-0x0000000007571000-memory.dmp

    Filesize

    68KB

  • memory/1452-62-0x00000000075E0000-0x0000000007676000-memory.dmp

    Filesize

    600KB

  • memory/1452-61-0x00000000073D0000-0x00000000073DA000-memory.dmp

    Filesize

    40KB

  • memory/1452-25-0x0000000005A50000-0x0000000005DA4000-memory.dmp

    Filesize

    3.3MB

  • memory/1452-60-0x0000000007360000-0x000000000737A000-memory.dmp

    Filesize

    104KB

  • memory/1452-21-0x0000000074E10000-0x00000000755C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1452-59-0x00000000079A0000-0x000000000801A000-memory.dmp

    Filesize

    6.5MB

  • memory/1452-58-0x0000000007220000-0x00000000072C3000-memory.dmp

    Filesize

    652KB

  • memory/1452-57-0x0000000006FA0000-0x0000000006FBE000-memory.dmp

    Filesize

    120KB

  • memory/1452-44-0x0000000006040000-0x000000000605E000-memory.dmp

    Filesize

    120KB

  • memory/2328-87-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-107-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-81-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-101-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-100-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-82-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-75-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-94-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-108-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-89-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-40-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/2328-76-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4908-2-0x00000000051F0000-0x0000000005794000-memory.dmp

    Filesize

    5.6MB

  • memory/4908-6-0x0000000005EC0000-0x0000000005EE0000-memory.dmp

    Filesize

    128KB

  • memory/4908-1-0x0000000000250000-0x0000000000356000-memory.dmp

    Filesize

    1.0MB

  • memory/4908-3-0x0000000004D40000-0x0000000004DD2000-memory.dmp

    Filesize

    584KB

  • memory/4908-43-0x0000000074E10000-0x00000000755C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4908-9-0x000000000BE50000-0x000000000BEEC000-memory.dmp

    Filesize

    624KB

  • memory/4908-0-0x0000000074E1E000-0x0000000074E1F000-memory.dmp

    Filesize

    4KB

  • memory/4908-7-0x0000000005FE0000-0x0000000005FF4000-memory.dmp

    Filesize

    80KB

  • memory/4908-4-0x0000000004F10000-0x0000000004F1A000-memory.dmp

    Filesize

    40KB

  • memory/4908-5-0x0000000074E10000-0x00000000755C0000-memory.dmp

    Filesize

    7.7MB

  • memory/4908-8-0x0000000008D90000-0x0000000008E50000-memory.dmp

    Filesize

    768KB