Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
05-12-2024 15:50
Static task
static1
Behavioral task
behavioral1
Sample
ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe
Resource
win7-20240903-en
General
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Target
ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe
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Size
854KB
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MD5
a0602bf02ae7766b58bffd108f148b7b
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SHA1
65b1ea618e93e70049d395401352fa06c85ffa38
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SHA256
ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a
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SHA512
27a6ef4322db17ab64acc78b946f14400cda55b1e800d674dd3a47fe89521e227d31f41df00ada3336c82a34bf1b023a2710aa9b4836ea64877c0d866accb00c
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SSDEEP
12288:DvUSmi/ScuxtPoeptfKh74Us0kJMxghMDXP4Faaxttoeq8:DXmi/SLxtJnyE0cMxrLEawtKet
Malware Config
Extracted
remcos
8846455
windowsoctarem.duckdns.org:56892
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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
4765-HH3V0S
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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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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 896 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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4864 set thread context of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 -
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 powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.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 1452 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 896 powershell.exe 896 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 896 powershell.exe -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 4864 wrote to memory of 896 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 98 PID 4864 wrote to memory of 896 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 98 PID 4864 wrote to memory of 896 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 98 PID 4864 wrote to memory of 1452 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 100 PID 4864 wrote to memory of 1452 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 100 PID 4864 wrote to memory of 1452 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 100 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102 PID 4864 wrote to memory of 3192 4864 ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe 102
Processes
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C:\Users\Admin\AppData\Local\Temp\ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe"C:\Users\Admin\AppData\Local\Temp\ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4864 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YBbcCHHNhNpA.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:896
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YBbcCHHNhNpA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE37A.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1452
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C:\Users\Admin\AppData\Local\Temp\ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe"C:\Users\Admin\AppData\Local\Temp\ac56ec5a81bca833585ad1c052dc5614936523763c87ade64f519b23a4f0b24a.exe"2⤵
- System Location Discovery: System Language Discovery
PID:3192
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD53ab71377351ec4969e9e6fa62b60fc6e
SHA122bacc1b2e6fd3a1c62465f2f94d7d62b1997cfe
SHA256e662cad3d2f3b6827ce72c76f26936143153f91be9446120629cee76ef456115
SHA5126a5df1f0ecfffb86d6f959bfe08e8bbeeeefbabe877dcb616e07afb23ab3f82f6dc1ef0046d6a17e9266089ddf862cd7137b1a42ef2c4ddc019062a394288153