Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2024 05:04

General

  • Target

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe

  • Size

    908KB

  • MD5

    0a91b0a960e1cb925434f0ded97e30b7

  • SHA1

    ea0ed432c0cdb5f86cde1b17850a77b68ad71af4

  • SHA256

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b

  • SHA512

    37d4fbd29f3a5b274545f4864f9005b814410e35abc94c106e433ecd5c403a230eb2ca38d1d20aaa1f29ad0fbef5997c0c0cae37c2237b165e2eb5778dd2f7e4

  • SSDEEP

    24576:Mo7x/alQteiW/C+sHTTPrCehcxQv4Zj6CSy:Mc/zhWK+vC4ZIy

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

206.189.218.238:4782

206.189.218.238:2286

206.189.218.238:3363

206.189.218.238:3386

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-NJK093

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • 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 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 8 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 2 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 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
    "C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:972
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wGvcmEX.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3960
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wGvcmEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp20E.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4440
    • C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe
      "C:\Users\Admin\AppData\Local\Temp\f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4936
      • C:\ProgramData\Remcos\remcos.exe
        "C:\ProgramData\Remcos\remcos.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4660
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wGvcmEX.exe"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4800
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wGvcmEX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8CDA.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:208
        • C:\ProgramData\Remcos\remcos.exe
          "C:\ProgramData\Remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:4368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Remcos\logs.dat

    Filesize

    144B

    MD5

    33ee1e1fbbed8c69e5db1b48126b4524

    SHA1

    520a98fa52fab7b5a74a1cf49b7a870a53dea389

    SHA256

    c5a598c35e5cb50a26a562e6d1f8ebbea66fc42417dc4380e80dc37ce5737dfe

    SHA512

    da29323371ded3068ff1b58d4f18a06a637b19e4cdb18c1302e3f9519b7c5738827c10f6c2fba27410a26a8c76567ada2494ce4acfe85092791185f0f1f53735

  • C:\ProgramData\Remcos\remcos.exe

    Filesize

    908KB

    MD5

    0a91b0a960e1cb925434f0ded97e30b7

    SHA1

    ea0ed432c0cdb5f86cde1b17850a77b68ad71af4

    SHA256

    f57e0e55aa4691d0502f6da67d4ecb2823c98bd319c5208ae44a518a0a17392b

    SHA512

    37d4fbd29f3a5b274545f4864f9005b814410e35abc94c106e433ecd5c403a230eb2ca38d1d20aaa1f29ad0fbef5997c0c0cae37c2237b165e2eb5778dd2f7e4

  • 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

    22bd4be4ba873599861d8bbd87650d82

    SHA1

    8220ac941cc556967f4406571860b68761850125

    SHA256

    e06e73eb9a9a901238e814ee506aa74dc6ed48e2e58a8a4cad1e26e5254f4a14

    SHA512

    311dc1b3e95cba7e9d82f7619e31e62cd10fa8ae9615254f2889cfb7b3ace5b7ce6df88680955eb8a5fe1869a78b1734ea3265355c9e58706e165293d5e62f50

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_o5cdm4gy.4cg.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp20E.tmp

    Filesize

    1KB

    MD5

    41e6e786ed783f09f45cede4a94ae7d1

    SHA1

    952c77ca920f31623ef8f33515d4f93c7cb1d923

    SHA256

    d9c81908622c71af05a649553540b0094c1f216078a84a28f2e5a8676b914993

    SHA512

    ec830ff7ec787a7893f8c51e9d63891729dded39bda147cc847de26e0eec00e1cabd2e1e1f7724e2f6d930bc480406a840af4e0e72dd14bd93d172711610494f

  • memory/972-5-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/972-7-0x0000000074F7E000-0x0000000074F7F000-memory.dmp

    Filesize

    4KB

  • memory/972-8-0x0000000005CA0000-0x0000000005CB2000-memory.dmp

    Filesize

    72KB

  • memory/972-9-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/972-10-0x0000000007B20000-0x0000000007BE4000-memory.dmp

    Filesize

    784KB

  • memory/972-4-0x00000000051E0000-0x00000000051EA000-memory.dmp

    Filesize

    40KB

  • memory/972-6-0x00000000052C0000-0x000000000535C000-memory.dmp

    Filesize

    624KB

  • memory/972-27-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/972-3-0x0000000005040000-0x00000000050D2000-memory.dmp

    Filesize

    584KB

  • memory/972-0-0x0000000074F7E000-0x0000000074F7F000-memory.dmp

    Filesize

    4KB

  • memory/972-2-0x0000000005510000-0x0000000005AB4000-memory.dmp

    Filesize

    5.6MB

  • memory/972-1-0x0000000000560000-0x000000000064A000-memory.dmp

    Filesize

    936KB

  • memory/3960-53-0x0000000006680000-0x00000000066CC000-memory.dmp

    Filesize

    304KB

  • memory/3960-71-0x0000000007B00000-0x0000000007B11000-memory.dmp

    Filesize

    68KB

  • memory/3960-15-0x0000000005030000-0x0000000005066000-memory.dmp

    Filesize

    216KB

  • memory/3960-16-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3960-28-0x0000000005610000-0x0000000005632000-memory.dmp

    Filesize

    136KB

  • memory/3960-30-0x0000000005F90000-0x0000000005FF6000-memory.dmp

    Filesize

    408KB

  • memory/3960-18-0x00000000057F0000-0x0000000005E18000-memory.dmp

    Filesize

    6.2MB

  • memory/3960-78-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3960-20-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3960-29-0x0000000005F20000-0x0000000005F86000-memory.dmp

    Filesize

    408KB

  • memory/3960-51-0x0000000006110000-0x0000000006464000-memory.dmp

    Filesize

    3.3MB

  • memory/3960-52-0x00000000065C0000-0x00000000065DE000-memory.dmp

    Filesize

    120KB

  • memory/3960-19-0x0000000074F70000-0x0000000075720000-memory.dmp

    Filesize

    7.7MB

  • memory/3960-54-0x0000000006B90000-0x0000000006BC2000-memory.dmp

    Filesize

    200KB

  • memory/3960-55-0x0000000071760000-0x00000000717AC000-memory.dmp

    Filesize

    304KB

  • memory/3960-65-0x0000000006BD0000-0x0000000006BEE000-memory.dmp

    Filesize

    120KB

  • memory/3960-66-0x00000000075C0000-0x0000000007663000-memory.dmp

    Filesize

    652KB

  • memory/3960-67-0x0000000007F40000-0x00000000085BA000-memory.dmp

    Filesize

    6.5MB

  • memory/3960-68-0x0000000007900000-0x000000000791A000-memory.dmp

    Filesize

    104KB

  • memory/3960-69-0x0000000007970000-0x000000000797A000-memory.dmp

    Filesize

    40KB

  • memory/3960-70-0x0000000007B80000-0x0000000007C16000-memory.dmp

    Filesize

    600KB

  • memory/3960-75-0x0000000007C20000-0x0000000007C28000-memory.dmp

    Filesize

    32KB

  • memory/3960-72-0x0000000007B30000-0x0000000007B3E000-memory.dmp

    Filesize

    56KB

  • memory/3960-73-0x0000000007B40000-0x0000000007B54000-memory.dmp

    Filesize

    80KB

  • memory/3960-74-0x0000000007C40000-0x0000000007C5A000-memory.dmp

    Filesize

    104KB

  • memory/4368-97-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4368-137-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4368-129-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4368-123-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4368-101-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4368-102-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4368-95-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4660-79-0x0000000005200000-0x0000000005212000-memory.dmp

    Filesize

    72KB

  • memory/4800-83-0x0000000005E40000-0x0000000006194000-memory.dmp

    Filesize

    3.3MB

  • memory/4800-105-0x0000000006490000-0x00000000064DC000-memory.dmp

    Filesize

    304KB

  • memory/4800-106-0x0000000072670000-0x00000000726BC000-memory.dmp

    Filesize

    304KB

  • memory/4800-116-0x0000000007960000-0x0000000007971000-memory.dmp

    Filesize

    68KB

  • memory/4800-117-0x00000000079A0000-0x00000000079B4000-memory.dmp

    Filesize

    80KB

  • memory/4936-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4936-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4936-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4936-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4936-50-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB