Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-05-2024 01:32

General

  • Target

    f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220.exe

  • Size

    1.5MB

  • MD5

    eb6fbf94ac91b528b6c2fef7c6dd79af

  • SHA1

    4f5079f8402b5a935cc9dcf2fd02ee98dabf95ed

  • SHA256

    f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220

  • SHA512

    2078931c8643f000560734eec6d73b88382f16e9a5db6a48e151e0bee9cbd53f87384bd8731b248eb8e446a1cedf2041e81528fe5a73bf07a800f6b5c76696b2

  • SSDEEP

    24576:jElEJSNI3rQ9891j8F1Oo/42VuKZWaKoPDfK6Dy6pPnltz1k:QlSaI3ruUjCT/huroPVy65lh1

Malware Config

Extracted

Family

remcos

Botnet

Remcoco

C2

173.212.199.134:8808

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-PMP82R

  • 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) 64 IoCs
  • 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.

  • 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 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220.exe
    "C:\Users\Admin\AppData\Local\Temp\f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3524
    • 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\f76934a541edddd96ff55c70aff0ba2be3c7f20b1b1f96a48f6ee99daeaef220.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2956
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OvSlUx.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:856
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OvSlUx" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBD35.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4116
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
        PID:4804

    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

      4f438e919203752b7c5f2c019afb47fe

      SHA1

      0b0cce660983ee9e6597f16a7c91e9c26e51ae90

      SHA256

      3ac43f6044038cc992e0f50966ec82d8b55b9b487ebe8b4255282b813c127d8d

      SHA512

      ba59ed1cfdec55836c410371ea9c604bae7c13ea9cd6a3d8db6b98e42dff2d4c71c16a187e09e664d870f76d48b753d1c66e90b7a275ce0ea2fdcfc242ea1678

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0oaiwhp0.bpd.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpBD35.tmp

      Filesize

      1KB

      MD5

      5928b929f780e595eb50d293416b4323

      SHA1

      2b726eab3c1d1c6b4759777d946e712dce0485a0

      SHA256

      32bc92201e308dd35e2f0fcb44034834cc99de8241aa92c548c790ef720738eb

      SHA512

      1704fffa6899f47fbc715acbce1bfa645b7226c59a49820cb38d3ffdff12cc1edb2e2ec1effc5f511bd6ba563c8a0e52950cd21d752cf38456a9aec965e73756

    • memory/856-79-0x0000000007B90000-0x0000000007C26000-memory.dmp

      Filesize

      600KB

    • memory/856-25-0x0000000005740000-0x0000000005762000-memory.dmp

      Filesize

      136KB

    • memory/856-76-0x0000000007F50000-0x00000000085CA000-memory.dmp

      Filesize

      6.5MB

    • memory/856-75-0x00000000075E0000-0x0000000007683000-memory.dmp

      Filesize

      652KB

    • memory/856-73-0x0000000007580000-0x000000000759E000-memory.dmp

      Filesize

      120KB

    • memory/856-53-0x00000000075A0000-0x00000000075D2000-memory.dmp

      Filesize

      200KB

    • memory/856-54-0x0000000074FE0000-0x000000007502C000-memory.dmp

      Filesize

      304KB

    • memory/856-78-0x0000000007980000-0x000000000798A000-memory.dmp

      Filesize

      40KB

    • memory/856-80-0x0000000007B10000-0x0000000007B21000-memory.dmp

      Filesize

      68KB

    • memory/856-83-0x0000000007B50000-0x0000000007B64000-memory.dmp

      Filesize

      80KB

    • memory/856-91-0x0000000074750000-0x0000000074F00000-memory.dmp

      Filesize

      7.7MB

    • memory/856-29-0x00000000057E0000-0x0000000005846000-memory.dmp

      Filesize

      408KB

    • memory/856-30-0x0000000005E80000-0x0000000005EE6000-memory.dmp

      Filesize

      408KB

    • memory/856-21-0x0000000074750000-0x0000000074F00000-memory.dmp

      Filesize

      7.7MB

    • memory/2956-64-0x0000000074FE0000-0x000000007502C000-memory.dmp

      Filesize

      304KB

    • memory/2956-20-0x0000000074750000-0x0000000074F00000-memory.dmp

      Filesize

      7.7MB

    • memory/2956-18-0x0000000074750000-0x0000000074F00000-memory.dmp

      Filesize

      7.7MB

    • memory/2956-84-0x0000000007500000-0x000000000751A000-memory.dmp

      Filesize

      104KB

    • memory/2956-37-0x0000000005880000-0x0000000005BD4000-memory.dmp

      Filesize

      3.3MB

    • memory/2956-19-0x0000000005080000-0x00000000056A8000-memory.dmp

      Filesize

      6.2MB

    • memory/2956-92-0x0000000074750000-0x0000000074F00000-memory.dmp

      Filesize

      7.7MB

    • memory/2956-85-0x00000000074E0000-0x00000000074E8000-memory.dmp

      Filesize

      32KB

    • memory/2956-16-0x00000000048E0000-0x0000000004916000-memory.dmp

      Filesize

      216KB

    • memory/2956-17-0x0000000074750000-0x0000000074F00000-memory.dmp

      Filesize

      7.7MB

    • memory/2956-82-0x00000000073F0000-0x00000000073FE000-memory.dmp

      Filesize

      56KB

    • memory/2956-51-0x0000000005E70000-0x0000000005E8E000-memory.dmp

      Filesize

      120KB

    • memory/2956-52-0x0000000005EB0000-0x0000000005EFC000-memory.dmp

      Filesize

      304KB

    • memory/2956-77-0x00000000071C0000-0x00000000071DA000-memory.dmp

      Filesize

      104KB

    • memory/3524-50-0x0000000074750000-0x0000000074F00000-memory.dmp

      Filesize

      7.7MB

    • memory/3524-9-0x0000000009380000-0x000000000941C000-memory.dmp

      Filesize

      624KB

    • memory/3524-8-0x0000000006CE0000-0x0000000006DA0000-memory.dmp

      Filesize

      768KB

    • memory/3524-7-0x00000000059A0000-0x00000000059B0000-memory.dmp

      Filesize

      64KB

    • memory/3524-6-0x0000000005770000-0x000000000578E000-memory.dmp

      Filesize

      120KB

    • memory/3524-10-0x000000007475E000-0x000000007475F000-memory.dmp

      Filesize

      4KB

    • memory/3524-4-0x0000000074750000-0x0000000074F00000-memory.dmp

      Filesize

      7.7MB

    • memory/3524-5-0x0000000005610000-0x000000000561A000-memory.dmp

      Filesize

      40KB

    • memory/3524-3-0x0000000005570000-0x0000000005602000-memory.dmp

      Filesize

      584KB

    • memory/3524-2-0x0000000005A80000-0x0000000006024000-memory.dmp

      Filesize

      5.6MB

    • memory/3524-11-0x0000000074750000-0x0000000074F00000-memory.dmp

      Filesize

      7.7MB

    • memory/3524-1-0x0000000000B20000-0x0000000000C9C000-memory.dmp

      Filesize

      1.5MB

    • memory/3524-0-0x000000007475E000-0x000000007475F000-memory.dmp

      Filesize

      4KB

    • memory/4804-97-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-119-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-36-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-39-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-38-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-93-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-94-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-95-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-96-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-31-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-98-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-99-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-100-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-101-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-102-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-103-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-104-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-105-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-106-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-107-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-108-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-109-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-110-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-111-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-112-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-113-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-114-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-115-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-116-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-117-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-118-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-81-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-120-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-121-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-122-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-123-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-124-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-125-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-126-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-127-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-128-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-129-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-130-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-131-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-132-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-133-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-134-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-135-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-136-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-137-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-138-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-139-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-140-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-141-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-142-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-143-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-144-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-145-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-146-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-147-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-148-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-149-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-150-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/4804-151-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB