Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
04-12-2024 17:00
Static task
static1
Behavioral task
behavioral1
Sample
CIF0983745DOC.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
CIF0983745DOC.exe
Resource
win10v2004-20241007-en
General
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Target
CIF0983745DOC.exe
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Size
955KB
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MD5
52c642cdb7298bb11558da681d352978
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SHA1
5ffacf37fb2e05b0c7078f89554e949afd369318
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SHA256
b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7
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SHA512
daf8b97540c58b58a86a2e73fc907ced0ba332d19811047491d59ae40ce53dc9ed613773b107da5fb8d96b59c1247a18b35eb5fbe4c8be2b016f65a80594f7d0
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SSDEEP
24576:0IeeIW8rjYO/CjNIvTc4ST4AWptCaWaZldbmi+3I:0BeBLhIvwHkB7CfaNdc
Malware Config
Extracted
remcos
RemoteHost
ddpo.duckdns.org:59033
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audio_folder
MicRecords
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audio_path
ApplicationPath
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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
Rmc-NUED7N
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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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Remcos family
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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 1520 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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation CIF0983745DOC.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2808 set thread context of 4564 2808 CIF0983745DOC.exe 96 -
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 3 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 powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language CIF0983745DOC.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language CIF0983745DOC.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1520 powershell.exe 1520 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1520 powershell.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 2808 wrote to memory of 1520 2808 CIF0983745DOC.exe 94 PID 2808 wrote to memory of 1520 2808 CIF0983745DOC.exe 94 PID 2808 wrote to memory of 1520 2808 CIF0983745DOC.exe 94 PID 2808 wrote to memory of 4564 2808 CIF0983745DOC.exe 96 PID 2808 wrote to memory of 4564 2808 CIF0983745DOC.exe 96 PID 2808 wrote to memory of 4564 2808 CIF0983745DOC.exe 96 PID 2808 wrote to memory of 4564 2808 CIF0983745DOC.exe 96 PID 2808 wrote to memory of 4564 2808 CIF0983745DOC.exe 96 PID 2808 wrote to memory of 4564 2808 CIF0983745DOC.exe 96 PID 2808 wrote to memory of 4564 2808 CIF0983745DOC.exe 96 PID 2808 wrote to memory of 4564 2808 CIF0983745DOC.exe 96 PID 2808 wrote to memory of 4564 2808 CIF0983745DOC.exe 96 PID 2808 wrote to memory of 4564 2808 CIF0983745DOC.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\CIF0983745DOC.exe"C:\Users\Admin\AppData\Local\Temp\CIF0983745DOC.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808 -
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\CIF0983745DOC.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1520
-
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C:\Users\Admin\AppData\Local\Temp\CIF0983745DOC.exe"C:\Users\Admin\AppData\Local\Temp\CIF0983745DOC.exe"2⤵
- System Location Discovery: System Language Discovery
PID:4564
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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