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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
16/09/2024, 06:57
Static task
static1
Behavioral task
behavioral1
Sample
TNT INVOICE 9.16.2024.exe
Resource
win7-20240708-en
General
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Target
TNT INVOICE 9.16.2024.exe
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Size
874KB
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MD5
fa85476ee938c50ec297a18b6d84ad2d
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SHA1
24687b69c21fdcc298fbc977548fcd34f1e7d8ee
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SHA256
4dd5c06062753a3522e3a1bb4a10d29639b467599913a27d77af2866dd095a32
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SHA512
7a486263b9de67d94b7d90c2e60c285cceaa8bfa0fb825b6aee6eafe753178316bf051b877ee797509becf59617246cea5cbcba2804fbb7f1252248508121758
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SSDEEP
24576:OEqKo59aqP71pME/qVt4G0PWxxtO6rO69qCVJFOxGoF:OE38bPQRVatPAA6rO6Fb
Malware Config
Extracted
remcos
IRN
irnserv1.ddns.net:4424
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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
true
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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-CA8761
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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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Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 224 powershell.exe 3384 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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation TNT INVOICE 9.16.2024.exe Key value queried \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation TNT INVOICE 9.16.2024.exe Key value queried \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation remcos.exe -
Executes dropped EXE 2 IoCs
pid Process 2112 remcos.exe 1116 remcos.exe -
Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-CA8761 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" remcos.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-CA8761 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" remcos.exe Set value (str) \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-CA8761 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" TNT INVOICE 9.16.2024.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-CA8761 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" TNT INVOICE 9.16.2024.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4136 set thread context of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 2112 set thread context of 1116 2112 remcos.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 8 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 TNT INVOICE 9.16.2024.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language remcos.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language TNT INVOICE 9.16.2024.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4632 schtasks.exe 3400 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 224 powershell.exe 224 powershell.exe 3384 powershell.exe 3384 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 224 powershell.exe Token: SeDebugPrivilege 3384 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1116 remcos.exe -
Suspicious use of WriteProcessMemory 39 IoCs
description pid Process procid_target PID 4136 wrote to memory of 224 4136 TNT INVOICE 9.16.2024.exe 89 PID 4136 wrote to memory of 224 4136 TNT INVOICE 9.16.2024.exe 89 PID 4136 wrote to memory of 224 4136 TNT INVOICE 9.16.2024.exe 89 PID 4136 wrote to memory of 4632 4136 TNT INVOICE 9.16.2024.exe 91 PID 4136 wrote to memory of 4632 4136 TNT INVOICE 9.16.2024.exe 91 PID 4136 wrote to memory of 4632 4136 TNT INVOICE 9.16.2024.exe 91 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 4136 wrote to memory of 1788 4136 TNT INVOICE 9.16.2024.exe 93 PID 1788 wrote to memory of 2112 1788 TNT INVOICE 9.16.2024.exe 94 PID 1788 wrote to memory of 2112 1788 TNT INVOICE 9.16.2024.exe 94 PID 1788 wrote to memory of 2112 1788 TNT INVOICE 9.16.2024.exe 94 PID 2112 wrote to memory of 3384 2112 remcos.exe 95 PID 2112 wrote to memory of 3384 2112 remcos.exe 95 PID 2112 wrote to memory of 3384 2112 remcos.exe 95 PID 2112 wrote to memory of 3400 2112 remcos.exe 97 PID 2112 wrote to memory of 3400 2112 remcos.exe 97 PID 2112 wrote to memory of 3400 2112 remcos.exe 97 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99 PID 2112 wrote to memory of 1116 2112 remcos.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\TNT INVOICE 9.16.2024.exe"C:\Users\Admin\AppData\Local\Temp\TNT INVOICE 9.16.2024.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4136 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fiCAFOzLq.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:224
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fiCAFOzLq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB6C.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4632
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C:\Users\Admin\AppData\Local\Temp\TNT INVOICE 9.16.2024.exe"C:\Users\Admin\AppData\Local\Temp\TNT INVOICE 9.16.2024.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1788 -
C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fiCAFOzLq.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3384
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fiCAFOzLq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp10F3.tmp"4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:3400
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C:\ProgramData\Remcos\remcos.exe"C:\ProgramData\Remcos\remcos.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:1116
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
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Filesize
144B
MD5d86a760caf452b240ff32c5ae5a313f7
SHA1833ed0199238824ed91337e8966fc8b427fd3e0f
SHA256a49fbe5f965ac5efb768174b2b12056075d95a31da4968e35d559eaf8e8166ea
SHA512a68ccb364032734df13c00a725df176a303181d072f2523a4254938dc6f7f2335787c9e58c091145c08c60c303577dd0e267fcabf3c50839c37c6cf59356b105
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Filesize
874KB
MD5fa85476ee938c50ec297a18b6d84ad2d
SHA124687b69c21fdcc298fbc977548fcd34f1e7d8ee
SHA2564dd5c06062753a3522e3a1bb4a10d29639b467599913a27d77af2866dd095a32
SHA5127a486263b9de67d94b7d90c2e60c285cceaa8bfa0fb825b6aee6eafe753178316bf051b877ee797509becf59617246cea5cbcba2804fbb7f1252248508121758
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Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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Filesize
18KB
MD5aac9de320baf3a964ebb70c380a32a8c
SHA1520b89f00a1995158a9bc19dd4efbe13b98ffa90
SHA256b209de48a579c24fd4fbb6759688f38096b10696d2200aed63efc288e9f24706
SHA512ade2919fca089836a72999928cefbe8c4c2a54e391d65b05c4b71ab2e7b9ca87c48c6637b74399019f8541cf1beec901ba43515571024962cae654679a618371
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD53995d139594abfe3c29c7236fd65161d
SHA13dc3f8cec3cf3aaca22bc868e81a1a0f5d28ebae
SHA256531cacb9aec860dcd25371548c846ef305d26b8e0f22f3f04b0aacfc158022aa
SHA5129277c2f51d06c049fbd36c2f663db7c436234ddf24c8f12a8cfe20a7d7c9e3f02aacaf91055e3b52f1c742137dee9ddaaccd28f007f81f8f0bf6cb9a32b4b34f