Analysis
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max time kernel
1800s -
max time network
1801s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
27/04/2024, 20:23
Behavioral task
behavioral1
Sample
CompatibilityCheck.exe
Resource
win10v2004-20240419-en
General
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Target
CompatibilityCheck.exe
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Size
37KB
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MD5
0c84829a79c06e88510607526990391e
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SHA1
63970a42f5b779c1f0f8d95d493317917b0bd46d
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SHA256
6f9b61794c9169a8860fb74e2cc0253b0bc283327b6485f799265f702a67c921
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SHA512
85638191fee2b456e601487aff23bc5dccbfd24e74970e5f1d8fbdad633a3d31208887f682debf1fd2abcec6e36c50e74b6da30c660dfa0bc0471e7ef8c98f40
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SSDEEP
384:p6hCpb2iKrL4y4Oo49qylTKbWstSXHasW4TkrAF+rMRTyN/0L+EcoinblneHQM3Y:oCdi/s89ZlTKtSK94YrM+rMRa8NuS2t
Malware Config
Extracted
njrat
im523
I am Furry
green-morrison.gl.at.ply.gg:17455
e14109296e01cf24bb9b7f72f64c4cb3
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reg_key
e14109296e01cf24bb9b7f72f64c4cb3
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 4104 netsh.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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation CompatibilityCheck.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e14109296e01cf24bb9b7f72f64c4cb3.exe COM Surrogate.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e14109296e01cf24bb9b7f72f64c4cb3.exe COM Surrogate.exe -
Executes dropped EXE 1 IoCs
pid Process 3032 COM Surrogate.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e14109296e01cf24bb9b7f72f64c4cb3 = "\"C:\\ProgramData\\COM Surrogate.exe\" .." COM Surrogate.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\e14109296e01cf24bb9b7f72f64c4cb3 = "\"C:\\ProgramData\\COM Surrogate.exe\" .." COM Surrogate.exe -
Drops autorun.inf file 1 TTPs 5 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File created C:\autorun.inf COM Surrogate.exe File opened for modification C:\autorun.inf COM Surrogate.exe File created D:\autorun.inf COM Surrogate.exe File created F:\autorun.inf COM Surrogate.exe File opened for modification F:\autorun.inf COM Surrogate.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Kills process with taskkill 1 IoCs
pid Process 1016 taskkill.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell taskmgr.exe Key created \REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU taskmgr.exe Set value (data) \REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots taskmgr.exe Set value (data) \REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff taskmgr.exe Key created \REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000_Classes\Local Settings taskmgr.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe 3032 COM Surrogate.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 3032 COM Surrogate.exe 4636 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 3032 COM Surrogate.exe Token: SeDebugPrivilege 1016 taskkill.exe Token: SeDebugPrivilege 4636 taskmgr.exe Token: SeSystemProfilePrivilege 4636 taskmgr.exe Token: SeCreateGlobalPrivilege 4636 taskmgr.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 3032 COM Surrogate.exe Token: 33 3032 COM Surrogate.exe -
Suspicious use of FindShellTrayWindow 64 IoCs
pid Process 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe -
Suspicious use of SendNotifyMessage 64 IoCs
pid Process 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe 4636 taskmgr.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1428 wrote to memory of 3032 1428 CompatibilityCheck.exe 89 PID 1428 wrote to memory of 3032 1428 CompatibilityCheck.exe 89 PID 1428 wrote to memory of 3032 1428 CompatibilityCheck.exe 89 PID 3032 wrote to memory of 4104 3032 COM Surrogate.exe 90 PID 3032 wrote to memory of 4104 3032 COM Surrogate.exe 90 PID 3032 wrote to memory of 4104 3032 COM Surrogate.exe 90 PID 3032 wrote to memory of 1016 3032 COM Surrogate.exe 92 PID 3032 wrote to memory of 1016 3032 COM Surrogate.exe 92 PID 3032 wrote to memory of 1016 3032 COM Surrogate.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\CompatibilityCheck.exe"C:\Users\Admin\AppData\Local\Temp\CompatibilityCheck.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1428 -
C:\ProgramData\COM Surrogate.exe"C:\ProgramData\COM Surrogate.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3032 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\ProgramData\COM Surrogate.exe" "COM Surrogate.exe" ENABLE3⤵
- Modifies Windows Firewall
PID:4104
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C:\Windows\SysWOW64\taskkill.exetaskkill /F /IM SecHealthUI.exe3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1016
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\CloseEdit.vbe"1⤵PID:1120
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4636
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:3856
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
37KB
MD50c84829a79c06e88510607526990391e
SHA163970a42f5b779c1f0f8d95d493317917b0bd46d
SHA2566f9b61794c9169a8860fb74e2cc0253b0bc283327b6485f799265f702a67c921
SHA51285638191fee2b456e601487aff23bc5dccbfd24e74970e5f1d8fbdad633a3d31208887f682debf1fd2abcec6e36c50e74b6da30c660dfa0bc0471e7ef8c98f40