Analysis
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max time kernel
150s -
max time network
146s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
18-05-2021 13:03
Static task
static1
Behavioral task
behavioral1
Sample
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe
Resource
win10v20210410
General
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Target
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe
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Size
931KB
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MD5
d7eb33ddd95d696c2778f8d362a7ca26
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SHA1
85951f84dd8825b4ad6397fc260a8a90bfd61518
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SHA256
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f
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SHA512
683951080bd05f527fcbccef34c9ff52ae85f7d8387d3986d2702839634e27e330a6d16bba74c890002cc4a6e828d1c7d1c8417782f1c8a3d029849b301fe7af
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
Processes:
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe," de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe" de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe -
Drops file in Drivers directory 2 IoCs
Processes:
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exedescription ioc process File created C:\Windows\SysWOW64\drivers\spools.exe de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened for modification C:\Windows\SysWOW64\drivers\spools.exe de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe -
Sets service image path in registry 2 TTPs
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Adds Run key to start application 2 TTPs 4 IoCs
Processes:
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe -
Enumerates connected drives 3 TTPs 20 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exedescription ioc process File opened (read-only) \??\I: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\K: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\V: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\E: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\G: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\J: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\M: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\N: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\X: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\F: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\H: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\S: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\T: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\U: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\P: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\R: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\Q: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\W: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\L: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe File opened (read-only) \??\O: de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe -
Installs/modifies Browser Helper Object 2 TTPs
BHOs are DLL modules which act as plugins for Internet Explorer.
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Modifies WinLogon 2 TTPs 1 IoCs
Processes:
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe" de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe -
Modifies registry class 1 IoCs
Processes:
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exedescription pid process target process PID 4068 wrote to memory of 3652 4068 de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe reg.exe PID 4068 wrote to memory of 3652 4068 de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe reg.exe PID 4068 wrote to memory of 3652 4068 de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe reg.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe"C:\Users\Admin\AppData\Local\Temp\de458fc2a4fc3e3cd36f863bdd62ec5e36289facf92fabb683de72343c7f731f.exe"1⤵
- Modifies WinLogon for persistence
- Modifies system executable filetype association
- Drops file in Drivers directory
- Adds Run key to start application
- Enumerates connected drives
- Modifies WinLogon
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/3652-114-0x0000000000000000-mapping.dmp