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Analysis

  • max time kernel
    147s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/08/2024, 15:19

General

  • Target

    8c8cad5c12f471f42d5992e71bd32478aedb40af922b03ef4920047012c04d1f.exe

  • Size

    1.0MB

  • MD5

    3fcb3ba201b234234bc5d65d20afe8f4

  • SHA1

    78917404e82b3bb709ce2caa6a2c291922f1539f

  • SHA256

    8c8cad5c12f471f42d5992e71bd32478aedb40af922b03ef4920047012c04d1f

  • SHA512

    6d8e182c3386d724aa6e7d6bd266606a31db3b2f553080e03955f04c8c7f80130b67faa6c5f2d7ceb2148f6f638d97dc90296f0ae92354592562c2f1724b714a

  • SSDEEP

    24576:L8M3chivYWuMmZIAsS9IfjYf/K2VG4ei4qHAlBTbhkBNQqzcnoT:TQBvIHSfVGoxKhyNpzcnI

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

23.95.235.18:2557

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-E0JKXE

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8c8cad5c12f471f42d5992e71bd32478aedb40af922b03ef4920047012c04d1f.exe
    "C:\Users\Admin\AppData\Local\Temp\8c8cad5c12f471f42d5992e71bd32478aedb40af922b03ef4920047012c04d1f.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:4868
    • 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\8c8cad5c12f471f42d5992e71bd32478aedb40af922b03ef4920047012c04d1f.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4792
    • C:\Users\Admin\AppData\Local\Temp\8c8cad5c12f471f42d5992e71bd32478aedb40af922b03ef4920047012c04d1f.exe
      "C:\Users\Admin\AppData\Local\Temp\8c8cad5c12f471f42d5992e71bd32478aedb40af922b03ef4920047012c04d1f.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4552

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vmzsngzr.zhh.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/4552-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-76-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-77-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-75-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-74-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-73-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-72-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-70-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-71-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-11-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-12-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-17-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-16-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4552-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4792-61-0x00000000077C0000-0x00000000077D1000-memory.dmp

    Filesize

    68KB

  • memory/4792-18-0x0000000074E6E000-0x0000000074E6F000-memory.dmp

    Filesize

    4KB

  • memory/4792-22-0x0000000074E60000-0x0000000075610000-memory.dmp

    Filesize

    7.7MB

  • memory/4792-23-0x00000000053B0000-0x00000000059D8000-memory.dmp

    Filesize

    6.2MB

  • memory/4792-24-0x0000000005150000-0x0000000005172000-memory.dmp

    Filesize

    136KB

  • memory/4792-25-0x0000000005A50000-0x0000000005AB6000-memory.dmp

    Filesize

    408KB

  • memory/4792-26-0x0000000005AC0000-0x0000000005B26000-memory.dmp

    Filesize

    408KB

  • memory/4792-21-0x0000000074E60000-0x0000000075610000-memory.dmp

    Filesize

    7.7MB

  • memory/4792-68-0x0000000074E60000-0x0000000075610000-memory.dmp

    Filesize

    7.7MB

  • memory/4792-65-0x00000000078E0000-0x00000000078E8000-memory.dmp

    Filesize

    32KB

  • memory/4792-64-0x0000000007900000-0x000000000791A000-memory.dmp

    Filesize

    104KB

  • memory/4792-39-0x00000000062A0000-0x00000000062BE000-memory.dmp

    Filesize

    120KB

  • memory/4792-40-0x00000000062E0000-0x000000000632C000-memory.dmp

    Filesize

    304KB

  • memory/4792-20-0x00000000028F0000-0x0000000002926000-memory.dmp

    Filesize

    216KB

  • memory/4792-44-0x0000000006860000-0x0000000006892000-memory.dmp

    Filesize

    200KB

  • memory/4792-45-0x0000000071380000-0x00000000713CC000-memory.dmp

    Filesize

    304KB

  • memory/4792-55-0x00000000068A0000-0x00000000068BE000-memory.dmp

    Filesize

    120KB

  • memory/4792-56-0x0000000007490000-0x0000000007533000-memory.dmp

    Filesize

    652KB

  • memory/4792-57-0x0000000007C00000-0x000000000827A000-memory.dmp

    Filesize

    6.5MB

  • memory/4792-58-0x00000000075C0000-0x00000000075DA000-memory.dmp

    Filesize

    104KB

  • memory/4792-59-0x0000000007630000-0x000000000763A000-memory.dmp

    Filesize

    40KB

  • memory/4792-60-0x0000000007840000-0x00000000078D6000-memory.dmp

    Filesize

    600KB

  • memory/4792-36-0x0000000005BF0000-0x0000000005F44000-memory.dmp

    Filesize

    3.3MB

  • memory/4792-62-0x00000000077F0000-0x00000000077FE000-memory.dmp

    Filesize

    56KB

  • memory/4792-63-0x0000000007800000-0x0000000007814000-memory.dmp

    Filesize

    80KB

  • memory/4868-8-0x0000000074E60000-0x0000000075610000-memory.dmp

    Filesize

    7.7MB

  • memory/4868-19-0x0000000074E60000-0x0000000075610000-memory.dmp

    Filesize

    7.7MB

  • memory/4868-2-0x00000000054F0000-0x0000000005A94000-memory.dmp

    Filesize

    5.6MB

  • memory/4868-1-0x00000000004E0000-0x00000000005EA000-memory.dmp

    Filesize

    1.0MB

  • memory/4868-10-0x0000000008EA0000-0x0000000008F3C000-memory.dmp

    Filesize

    624KB

  • memory/4868-9-0x00000000064A0000-0x0000000006560000-memory.dmp

    Filesize

    768KB

  • memory/4868-0-0x0000000074E6E000-0x0000000074E6F000-memory.dmp

    Filesize

    4KB

  • memory/4868-7-0x0000000074E6E000-0x0000000074E6F000-memory.dmp

    Filesize

    4KB

  • memory/4868-6-0x0000000006A20000-0x0000000006A38000-memory.dmp

    Filesize

    96KB

  • memory/4868-5-0x0000000074E60000-0x0000000075610000-memory.dmp

    Filesize

    7.7MB

  • memory/4868-4-0x0000000006460000-0x000000000646A000-memory.dmp

    Filesize

    40KB

  • memory/4868-3-0x0000000004FE0000-0x0000000005072000-memory.dmp

    Filesize

    584KB