Analysis
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max time kernel
149s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
24-07-2024 03:10
Static task
static1
Behavioral task
behavioral1
Sample
rfq1960.exe
Resource
win7-20240705-en
General
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Target
rfq1960.exe
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Size
904KB
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MD5
38b63c968b2733cef310a6df2dcfa478
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SHA1
bbbb4dcf4ecc6364af54480929d430da1c460a13
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SHA256
2768689f6c4a60b7fe18d6c87fdecd8a7f8dceefa298a5851c4a7c6909f3a92d
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SHA512
ab9486482bfae4c5a86a5d3dbe9aa47b003d9d74965b5fbd24f72a30ee1bd5a34a75cbcecff98aa3852e7c2019a582f8633bc1c8d762a65ef9084fb00791f3da
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SSDEEP
24576:CRv6SSp2ReQ/tOsbwHsIS7NjkDpGrWbv8MXK:CJZeQcsUHPSZjkDpcWb3
Malware Config
Extracted
remcos
5764576
172.93.218.178:45667
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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
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
765-XJJE0J
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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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startup_value
Remcos
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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 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 2196 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation rfq1960.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 452 set thread context of 4652 452 rfq1960.exe 98 -
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 4 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 rfq1960.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 rfq1960.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1108 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2196 powershell.exe 2196 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2196 powershell.exe -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 452 wrote to memory of 2196 452 rfq1960.exe 94 PID 452 wrote to memory of 2196 452 rfq1960.exe 94 PID 452 wrote to memory of 2196 452 rfq1960.exe 94 PID 452 wrote to memory of 1108 452 rfq1960.exe 96 PID 452 wrote to memory of 1108 452 rfq1960.exe 96 PID 452 wrote to memory of 1108 452 rfq1960.exe 96 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98 PID 452 wrote to memory of 4652 452 rfq1960.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\rfq1960.exe"C:\Users\Admin\AppData\Local\Temp\rfq1960.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:452 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TlykqEvmBV.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2196
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TlykqEvmBV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA46E.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1108
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C:\Users\Admin\AppData\Local\Temp\rfq1960.exe"C:\Users\Admin\AppData\Local\Temp\rfq1960.exe"2⤵
- System Location Discovery: System Language Discovery
PID:4652
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD52f0b69a087fb9eddda2959005d5f78ca
SHA16ec32244c1bc1f19a502c1244a0cb607048c799b
SHA256dac457537a67a6361727eb4ef34635ac94b320d754b7e215e2fc31bc1619a119
SHA51254e02b5da81ea45c1ad3b014d8e485d9cdd3a60febfa8513fd822dc5830b58f1f4149a699dbe12728357def395184ae6f7a1df86bdab4bfb819a54361a8a5cf3