Analysis
-
max time kernel
148s -
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
09-09-2024 22:35
Static task
static1
Behavioral task
behavioral1
Sample
TNT invoice.exe
Resource
win7-20240704-en
General
-
Target
TNT invoice.exe
-
Size
883KB
-
MD5
054306ece8b6f161c94e7cb68d8bd9e6
-
SHA1
5b49d309162f9308baa6aa4e85931c85ec3eb909
-
SHA256
f9f95960ec195d7f883e4b3d5d75c26cd9f7dc7fbe8eef76d493ab6cc149e898
-
SHA512
f1ee8d8f986ef4e5b30ac8f9b262243e93cade9267b3c024d2b5787d6c5bc87b8eadb5200c5f65959f969c57b735b2446093b8891da066042cd413f489e62ca6
-
SSDEEP
24576:paUd4rdMqIdKWA5RUzENN1UcrZT216UHSF698lLUE7zvkE:TyrdlUzEjxZT2HIlLk
Malware Config
Extracted
remcos
IRN
irnserv1.ddns.net:4424
-
audio_folder
MicRecords
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
1
-
copy_file
remcos.exe
-
copy_folder
Remcos
-
delete_file
false
-
hide_file
false
-
hide_keylog_file
false
-
install_flag
true
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-CA8761
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
-
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 3340 powershell.exe 940 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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation remcos.exe Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation TNT invoice.exe Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation TNT invoice.exe -
Executes dropped EXE 2 IoCs
pid Process 1624 remcos.exe 4352 remcos.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Adds Run key to start application 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-CA8761 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" TNT invoice.exe Set value (str) \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-CA8761 = "\"C:\\ProgramData\\Remcos\\remcos.exe\"" TNT invoice.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3056 set thread context of 1768 3056 TNT invoice.exe 99 PID 1624 set thread context of 4352 1624 remcos.exe 105 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
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.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.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 4624 schtasks.exe 944 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
pid Process 3056 TNT invoice.exe 3056 TNT invoice.exe 3056 TNT invoice.exe 3056 TNT invoice.exe 940 powershell.exe 940 powershell.exe 1624 remcos.exe 1624 remcos.exe 3340 powershell.exe 3340 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3056 TNT invoice.exe Token: SeDebugPrivilege 940 powershell.exe Token: SeDebugPrivilege 1624 remcos.exe Token: SeDebugPrivilege 3340 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4352 remcos.exe -
Suspicious use of WriteProcessMemory 42 IoCs
description pid Process procid_target PID 3056 wrote to memory of 940 3056 TNT invoice.exe 94 PID 3056 wrote to memory of 940 3056 TNT invoice.exe 94 PID 3056 wrote to memory of 940 3056 TNT invoice.exe 94 PID 3056 wrote to memory of 4624 3056 TNT invoice.exe 96 PID 3056 wrote to memory of 4624 3056 TNT invoice.exe 96 PID 3056 wrote to memory of 4624 3056 TNT invoice.exe 96 PID 3056 wrote to memory of 1820 3056 TNT invoice.exe 98 PID 3056 wrote to memory of 1820 3056 TNT invoice.exe 98 PID 3056 wrote to memory of 1820 3056 TNT invoice.exe 98 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 3056 wrote to memory of 1768 3056 TNT invoice.exe 99 PID 1768 wrote to memory of 1624 1768 TNT invoice.exe 100 PID 1768 wrote to memory of 1624 1768 TNT invoice.exe 100 PID 1768 wrote to memory of 1624 1768 TNT invoice.exe 100 PID 1624 wrote to memory of 3340 1624 remcos.exe 101 PID 1624 wrote to memory of 3340 1624 remcos.exe 101 PID 1624 wrote to memory of 3340 1624 remcos.exe 101 PID 1624 wrote to memory of 944 1624 remcos.exe 102 PID 1624 wrote to memory of 944 1624 remcos.exe 102 PID 1624 wrote to memory of 944 1624 remcos.exe 102 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105 PID 1624 wrote to memory of 4352 1624 remcos.exe 105
Processes
-
C:\Users\Admin\AppData\Local\Temp\TNT invoice.exe"C:\Users\Admin\AppData\Local\Temp\TNT invoice.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3056 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\osuEcT.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:940
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\osuEcT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC544.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4624
-
-
C:\Users\Admin\AppData\Local\Temp\TNT invoice.exe"C:\Users\Admin\AppData\Local\Temp\TNT invoice.exe"2⤵PID:1820
-
-
C:\Users\Admin\AppData\Local\Temp\TNT invoice.exe"C:\Users\Admin\AppData\Local\Temp\TNT invoice.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1768 -
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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1624 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\osuEcT.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3340
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\osuEcT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFA8C.tmp"4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:944
-
-
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:4352
-
-
-
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
Loading Replay Monitor...
Downloads
-
Filesize
144B
MD500ae653464ad2bfa880a6ea27d000b2f
SHA117e781476c152699f709d30235fb859009180134
SHA2561cfb0a978556246d9557e81ec58fb03de2fab0f06239a9519da65ff8c7756d34
SHA512ac1da629994e0772ee5d7d0451d0d0006433102cd0aade7c4c04856a60cdec9e2f1f083fed65c6be317a70a05a815ae90070d3622e0a014bf63efc0dd1cc4757
-
Filesize
883KB
MD5054306ece8b6f161c94e7cb68d8bd9e6
SHA15b49d309162f9308baa6aa4e85931c85ec3eb909
SHA256f9f95960ec195d7f883e4b3d5d75c26cd9f7dc7fbe8eef76d493ab6cc149e898
SHA512f1ee8d8f986ef4e5b30ac8f9b262243e93cade9267b3c024d2b5787d6c5bc87b8eadb5200c5f65959f969c57b735b2446093b8891da066042cd413f489e62ca6
-
Filesize
2KB
MD53d086a433708053f9bf9523e1d87a4e8
SHA1b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28
SHA2566f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69
SHA512931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd
-
Filesize
18KB
MD579e1b353fbf28c365b96cc6312bb80a9
SHA1500ca4c1294b55b5dec6d23d1ea5e277279d1118
SHA256d25aa3c1b3d0adc35ff88799d4da15b9d564ad624bff7e2a167c42f1eff2c2ba
SHA51271278a08c65cee250eaa74f299fc66ff38884d19f81d57ec79dc5ee06210020e3f2e7334a0185a76b2f6ab4a15c818f59cf50933963b774da2969c9314137b58
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
-
Filesize
1KB
MD5906e16c922e7795c8b89c58d9ef60dd6
SHA1963bf4974a443dc1af988e8a1de31388565ed4d0
SHA25674efb381a30264c36946d743da5ea8302d6e2a2587cebe6c2931710fc627c892
SHA51293f5119f69207d49f36970227e81f19d4ff54652a3cb5d8d248e4a51cec207a2413fd9e3c6bf71d92ccd395c1382c8f58cf59ae34beac027c9b7261278637a48