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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 05:36

General

  • Target

    Specifications.scr

  • Size

    1020KB

  • MD5

    f03e14fede667def5971cd05001ac26e

  • SHA1

    c3b194d8b0d66a3a7aa540123f9191f06632c31a

  • SHA256

    a090d4d19e61d32cc67cbbcd57124becd412d1e9f7d8d8ed896da4d2d689dc7f

  • SHA512

    e38eaa3b4720cd0e0fd002f9d9067991c7b2ded1335a0a8d8872b96ec498a3231bdf99c1347e701b0bf23631e27a2569d62b0671a009562f9effb932c2ff3ff1

  • SSDEEP

    24576:MtS2xc3m8Y83BarJ3OJJwFcx9wyeZBMI4mCJFix:MQ2x+b3BaN3mwF6yJXWFi

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

lora1.taiwantradeglobal.com:2404

lora2.taiwantradeglobal.com:2404

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-R9UMK0

  • 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.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 51 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • 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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Specifications.scr
    "C:\Users\Admin\AppData\Local\Temp\Specifications.scr" /S
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4500
    • 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\Specifications.scr"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3712
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QfWagJoK.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3960
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QfWagJoK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAD57.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1476
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
        PID:4156

    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\Temp\__PSScriptPolicyTest_exwsiigz.00x.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpAD57.tmp

      Filesize

      1KB

      MD5

      66c7c5a18a40dc1e238f71735594c74d

      SHA1

      c4d8e6da05392935077c72b4407828b6db3950fc

      SHA256

      8941b89ea3fed787201a9e8eb4903d8e21e778bb39e630eb69b24e30ad3c6fd5

      SHA512

      e52c06681444921d2c83060dd0c5ed13a085117974cc91c76811555619b8d531e85f03257744d075e32299e9225ff4ad3d8b0b80e5599e44268fd1dea9a6ce2a

    • memory/3712-86-0x0000000006FB0000-0x0000000006FBA000-memory.dmp

      Filesize

      40KB

    • memory/3712-16-0x0000000004680000-0x00000000046B6000-memory.dmp

      Filesize

      216KB

    • memory/3712-82-0x0000000004790000-0x00000000047A0000-memory.dmp

      Filesize

      64KB

    • memory/3712-84-0x0000000007580000-0x0000000007BFA000-memory.dmp

      Filesize

      6.5MB

    • memory/3712-61-0x0000000075610000-0x000000007565C000-memory.dmp

      Filesize

      304KB

    • memory/3712-88-0x0000000007140000-0x0000000007151000-memory.dmp

      Filesize

      68KB

    • memory/3712-87-0x00000000071C0000-0x0000000007256000-memory.dmp

      Filesize

      600KB

    • memory/3712-25-0x0000000005570000-0x00000000055D6000-memory.dmp

      Filesize

      408KB

    • memory/3712-60-0x000000007F490000-0x000000007F4A0000-memory.dmp

      Filesize

      64KB

    • memory/3712-55-0x0000000005C10000-0x0000000005C2E000-memory.dmp

      Filesize

      120KB

    • memory/3712-17-0x0000000074D60000-0x0000000075510000-memory.dmp

      Filesize

      7.7MB

    • memory/3712-18-0x0000000004DD0000-0x00000000053F8000-memory.dmp

      Filesize

      6.2MB

    • memory/3712-19-0x0000000004790000-0x00000000047A0000-memory.dmp

      Filesize

      64KB

    • memory/3712-98-0x0000000074D60000-0x0000000075510000-memory.dmp

      Filesize

      7.7MB

    • memory/3712-33-0x00000000055E0000-0x0000000005646000-memory.dmp

      Filesize

      408KB

    • memory/3712-26-0x0000000004790000-0x00000000047A0000-memory.dmp

      Filesize

      64KB

    • memory/3712-58-0x0000000006BC0000-0x0000000006BF2000-memory.dmp

      Filesize

      200KB

    • memory/3960-23-0x00000000024D0000-0x00000000024E0000-memory.dmp

      Filesize

      64KB

    • memory/3960-24-0x00000000024D0000-0x00000000024E0000-memory.dmp

      Filesize

      64KB

    • memory/3960-21-0x0000000004F30000-0x0000000004F52000-memory.dmp

      Filesize

      136KB

    • memory/3960-72-0x0000000006290000-0x00000000062AE000-memory.dmp

      Filesize

      120KB

    • memory/3960-22-0x0000000074D60000-0x0000000075510000-memory.dmp

      Filesize

      7.7MB

    • memory/3960-89-0x0000000007250000-0x000000000725E000-memory.dmp

      Filesize

      56KB

    • memory/3960-91-0x0000000007360000-0x000000000737A000-memory.dmp

      Filesize

      104KB

    • memory/3960-49-0x0000000005840000-0x0000000005B94000-memory.dmp

      Filesize

      3.3MB

    • memory/3960-85-0x0000000007020000-0x000000000703A000-memory.dmp

      Filesize

      104KB

    • memory/3960-71-0x00000000024D0000-0x00000000024E0000-memory.dmp

      Filesize

      64KB

    • memory/3960-92-0x0000000007340000-0x0000000007348000-memory.dmp

      Filesize

      32KB

    • memory/3960-83-0x0000000006F20000-0x0000000006FC3000-memory.dmp

      Filesize

      652KB

    • memory/3960-90-0x0000000007260000-0x0000000007274000-memory.dmp

      Filesize

      80KB

    • memory/3960-56-0x0000000006230000-0x000000000627C000-memory.dmp

      Filesize

      304KB

    • memory/3960-97-0x0000000074D60000-0x0000000075510000-memory.dmp

      Filesize

      7.7MB

    • memory/3960-59-0x0000000075610000-0x000000007565C000-memory.dmp

      Filesize

      304KB

    • memory/3960-57-0x000000007FA30000-0x000000007FA40000-memory.dmp

      Filesize

      64KB

    • memory/4156-32-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-135-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-158-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-52-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-48-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-38-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-156-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-155-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-154-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-152-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-151-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-150-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-148-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-147-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-146-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-144-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-143-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-142-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-99-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-100-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-101-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-102-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-103-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-105-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-106-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-107-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-109-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-110-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-111-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-112-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-114-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-115-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-116-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-118-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-119-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-120-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-122-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-123-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-124-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-126-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-127-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-128-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-130-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-131-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-132-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-134-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-54-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-136-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-138-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-139-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4156-140-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4500-7-0x0000000007D20000-0x0000000007D2A000-memory.dmp

      Filesize

      40KB

    • memory/4500-3-0x0000000005180000-0x0000000005212000-memory.dmp

      Filesize

      584KB

    • memory/4500-2-0x0000000005690000-0x0000000005C34000-memory.dmp

      Filesize

      5.6MB

    • memory/4500-4-0x00000000053A0000-0x00000000053B0000-memory.dmp

      Filesize

      64KB

    • memory/4500-5-0x0000000005110000-0x000000000511A000-memory.dmp

      Filesize

      40KB

    • memory/4500-6-0x0000000005540000-0x0000000005554000-memory.dmp

      Filesize

      80KB

    • memory/4500-0-0x0000000000610000-0x0000000000712000-memory.dmp

      Filesize

      1.0MB

    • memory/4500-8-0x0000000007D30000-0x0000000007D3E000-memory.dmp

      Filesize

      56KB

    • memory/4500-9-0x0000000007D80000-0x0000000007E40000-memory.dmp

      Filesize

      768KB

    • memory/4500-10-0x0000000008030000-0x00000000080CC000-memory.dmp

      Filesize

      624KB

    • memory/4500-11-0x0000000074D60000-0x0000000075510000-memory.dmp

      Filesize

      7.7MB

    • memory/4500-1-0x0000000074D60000-0x0000000075510000-memory.dmp

      Filesize

      7.7MB

    • memory/4500-53-0x0000000074D60000-0x0000000075510000-memory.dmp

      Filesize

      7.7MB