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Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
13/03/2024, 06:59
Static task
static1
Behavioral task
behavioral1
Sample
c54342185881953b5e36fe05f977cc00.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
c54342185881953b5e36fe05f977cc00.exe
Resource
win10v2004-20240226-en
General
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Target
c54342185881953b5e36fe05f977cc00.exe
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Size
901KB
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MD5
c54342185881953b5e36fe05f977cc00
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SHA1
e2185b97ad8f467c51470da67ac09e07dab8fe60
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SHA256
109a5ffb53cd3311e68c5a28f84fd1d7eb668de3db43a35c344f83785187f915
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SHA512
4b16174315b28a250411a86d3b4f297be69a4e4f51899ea7ba94c1e0dde580e5f2f6d331fc5051865aa682f96be5bd3ec2a18caecfd7eae85f58702d0f7279bf
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SSDEEP
12288:8HLoR65AXwgFvuSS3sGs6+XqIXq9MZj9Iba0vWtgA7K+zqrkb1NnSzv:8roR6qgEvaiZBEacBuoe1NnMv
Malware Config
Extracted
remcos
3.1.5 Light
RemoteHost
91.243.44.5:5149
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audio_folder
MicRecords
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audio_path
%AppData%
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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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install_path
%AppData%
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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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keylog_path
%AppData%
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mouse_option
false
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mutex
Remcos-W0VXG0
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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
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take_screenshot_title
notepad;solitaire;
Signatures
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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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation c54342185881953b5e36fe05f977cc00.exe -
resource yara_rule behavioral2/memory/2288-13-0x0000000000400000-0x0000000000476000-memory.dmp upx behavioral2/memory/2288-14-0x0000000000400000-0x0000000000476000-memory.dmp upx behavioral2/memory/2288-16-0x0000000000400000-0x0000000000476000-memory.dmp upx behavioral2/memory/2288-17-0x0000000000400000-0x0000000000476000-memory.dmp upx behavioral2/memory/2288-20-0x0000000000400000-0x0000000000476000-memory.dmp upx behavioral2/memory/2288-66-0x0000000000400000-0x0000000000476000-memory.dmp upx -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1432 set thread context of 2288 1432 c54342185881953b5e36fe05f977cc00.exe 105 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 5096 powershell.exe 5096 powershell.exe 5096 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 5096 powershell.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 1432 wrote to memory of 5096 1432 c54342185881953b5e36fe05f977cc00.exe 103 PID 1432 wrote to memory of 5096 1432 c54342185881953b5e36fe05f977cc00.exe 103 PID 1432 wrote to memory of 5096 1432 c54342185881953b5e36fe05f977cc00.exe 103 PID 1432 wrote to memory of 2288 1432 c54342185881953b5e36fe05f977cc00.exe 105 PID 1432 wrote to memory of 2288 1432 c54342185881953b5e36fe05f977cc00.exe 105 PID 1432 wrote to memory of 2288 1432 c54342185881953b5e36fe05f977cc00.exe 105 PID 1432 wrote to memory of 2288 1432 c54342185881953b5e36fe05f977cc00.exe 105 PID 1432 wrote to memory of 2288 1432 c54342185881953b5e36fe05f977cc00.exe 105 PID 1432 wrote to memory of 2288 1432 c54342185881953b5e36fe05f977cc00.exe 105 PID 1432 wrote to memory of 2288 1432 c54342185881953b5e36fe05f977cc00.exe 105
Processes
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C:\Users\Admin\AppData\Local\Temp\c54342185881953b5e36fe05f977cc00.exe"C:\Users\Admin\AppData\Local\Temp\c54342185881953b5e36fe05f977cc00.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1432 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\c54342185881953b5e36fe05f977cc00.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5096
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C:\Users\Admin\AppData\Local\Temp\c54342185881953b5e36fe05f977cc00.exe"C:\Users\Admin\AppData\Local\Temp\c54342185881953b5e36fe05f977cc00.exe"2⤵PID:2288
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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