Analysis
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max time kernel
119s -
max time network
97s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
08-01-2025 22:39
Behavioral task
behavioral1
Sample
cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe
Resource
win7-20240708-en
General
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Target
cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe
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Size
21KB
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MD5
2f0612bd62dcb8275096e644c7501efe
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SHA1
6a484b8c4cea80443fe8e4855bd6bfc288b18dd8
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SHA256
cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd
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SHA512
c8dda4fccce7a3bb02f3e21f9be5c9f08c49149dff9bd37432a6940f15c15e7c5f4e56312c41a8f1b5958921b9ec1a25b32b134fdfbd6c7295e45df57ea7de16
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SSDEEP
384:7IdmF+Ti213fEF9QZd/cBr5M/gOjkaS4s/1k5YiZNlH8pQ4djhty4OOpLRL:7IsF81fG9QveLOYTe5YiB8pQHCL
Malware Config
Signatures
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Detect XtremeRAT payload 3 IoCs
resource yara_rule behavioral2/memory/3132-7-0x0000000000C80000-0x0000000000C96000-memory.dmp family_xtremerat behavioral2/memory/5012-8-0x0000000000C80000-0x0000000000C96000-memory.dmp family_xtremerat behavioral2/memory/3132-10-0x0000000000C80000-0x0000000000C96000-memory.dmp family_xtremerat -
XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
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Xtremerat family
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Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
description ioc Process Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{CXQH1ITX-511P-4UO4-3AY1-J0JW3538A7Y7} cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{CXQH1ITX-511P-4UO4-3AY1-J0JW3538A7Y7}\StubPath = "C:\\Windows\\system32\\InstallDir\\crss.exe restart" cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AdobeFlash = "C:\\Windows\\system32\\InstallDir\\crss.exe" cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe Set value (str) \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Java8 = "C:\\Windows\\system32\\InstallDir\\crss.exe" cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe -
Drops file in System32 directory 3 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\InstallDir\ cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe File opened for modification C:\Windows\SysWOW64\InstallDir\crss.exe cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe File created C:\Windows\SysWOW64\InstallDir\crss.exe cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe -
resource yara_rule behavioral2/memory/5012-0-0x0000000000C80000-0x0000000000C96000-memory.dmp upx behavioral2/memory/3132-7-0x0000000000C80000-0x0000000000C96000-memory.dmp upx behavioral2/memory/5012-8-0x0000000000C80000-0x0000000000C96000-memory.dmp upx behavioral2/memory/3132-10-0x0000000000C80000-0x0000000000C96000-memory.dmp upx -
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 2 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 explorer.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3132 explorer.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 5012 wrote to memory of 1572 5012 cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe 83 PID 5012 wrote to memory of 1572 5012 cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe 83 PID 5012 wrote to memory of 1572 5012 cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe 83 PID 5012 wrote to memory of 3480 5012 cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe 84 PID 5012 wrote to memory of 3480 5012 cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe 84 PID 5012 wrote to memory of 3480 5012 cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe 84 PID 5012 wrote to memory of 3132 5012 cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe 85 PID 5012 wrote to memory of 3132 5012 cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe 85 PID 5012 wrote to memory of 3132 5012 cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe 85 PID 5012 wrote to memory of 3132 5012 cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe"C:\Users\Admin\AppData\Local\Temp\cd8b14a5a8451fba73be2438dc83d6d724d971a34a906a4336b7d82ed4f59bbd.exe"1⤵
- Boot or Logon Autostart Execution: Active Setup
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5012 -
C:\Windows\SysWOW64\explorer.exeexplorer.exe2⤵PID:1572
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C:\Windows\SysWOW64\explorer.exeexplorer.exe2⤵PID:3480
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C:\Windows\SysWOW64\explorer.exeexplorer.exe2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:3132
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Privilege Escalation
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1