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Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
21/01/2024, 09:45
Behavioral task
behavioral1
Sample
6cfd31c3c1e3a4283e684ff8b8955004.exe
Resource
win7-20231129-en
General
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Target
6cfd31c3c1e3a4283e684ff8b8955004.exe
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Size
212KB
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MD5
6cfd31c3c1e3a4283e684ff8b8955004
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SHA1
4e2f48850ff114d1c9b8b1c813b36c60dddf41a5
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SHA256
b409ed29c46572da5f05ff451b7eb7fb89fac88cea526b3a8ac1976341704046
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SHA512
c66e1b1471722636a836915efb70d128edfaf791b456eaddddec3324090c66d64d864039eebc328ccdd3ed7b3ec04197ce13adc254c1ad78012b9501ea74823a
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SSDEEP
3072:KJacj8v7wQ+ZGx7w8wjjP8I1IU8RjrzzvUWAOZjfKdL+YP:KJPgv7wJZ87wBjYI1IUwrIOZyhP
Malware Config
Extracted
njrat
0.6.4
Hacked
abdo95.ddns.net:1177
ed6e2bf930f6d35b3ac57c049d10ac2c
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reg_key
ed6e2bf930f6d35b3ac57c049d10ac2c
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 1 TTPs 1 IoCs
pid Process 4984 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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation test.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ed6e2bf930f6d35b3ac57c049d10ac2c.exe Explorer.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ed6e2bf930f6d35b3ac57c049d10ac2c.exe Explorer.exe -
Executes dropped EXE 2 IoCs
pid Process 3616 test.exe 5096 Explorer.exe -
resource yara_rule behavioral2/memory/4240-0-0x0000000000400000-0x0000000000498000-memory.dmp upx behavioral2/memory/4240-21-0x0000000000400000-0x0000000000498000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ed6e2bf930f6d35b3ac57c049d10ac2c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Explorer.exe\" .." Explorer.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ed6e2bf930f6d35b3ac57c049d10ac2c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Explorer.exe\" .." Explorer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 48 IoCs
pid Process 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe 5096 Explorer.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 5096 Explorer.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4240 wrote to memory of 3464 4240 6cfd31c3c1e3a4283e684ff8b8955004.exe 23 PID 4240 wrote to memory of 3464 4240 6cfd31c3c1e3a4283e684ff8b8955004.exe 23 PID 4240 wrote to memory of 3464 4240 6cfd31c3c1e3a4283e684ff8b8955004.exe 23 PID 3464 wrote to memory of 3616 3464 cmd.exe 26 PID 3464 wrote to memory of 3616 3464 cmd.exe 26 PID 3464 wrote to memory of 3616 3464 cmd.exe 26 PID 3616 wrote to memory of 5096 3616 test.exe 47 PID 3616 wrote to memory of 5096 3616 test.exe 47 PID 3616 wrote to memory of 5096 3616 test.exe 47 PID 5096 wrote to memory of 4984 5096 Explorer.exe 50 PID 5096 wrote to memory of 4984 5096 Explorer.exe 50 PID 5096 wrote to memory of 4984 5096 Explorer.exe 50
Processes
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C:\Users\Admin\AppData\Local\Temp\6cfd31c3c1e3a4283e684ff8b8955004.exe"C:\Users\Admin\AppData\Local\Temp\6cfd31c3c1e3a4283e684ff8b8955004.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4240 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c test.exe2⤵
- Suspicious use of WriteProcessMemory
PID:3464 -
C:\Users\Admin\AppData\Local\Temp\test.exetest.exe3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3616 -
C:\Users\Admin\AppData\Local\Temp\Explorer.exe"C:\Users\Admin\AppData\Local\Temp\Explorer.exe"4⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5096 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Explorer.exe" "Explorer.exe" ENABLE5⤵
- Modifies Windows Firewall
PID:4984
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
29KB
MD5fc42513e45503d510fb011bbb309e51e
SHA1e9741466f6e68dadb9e874f12d5b62fe14693741
SHA256766240fd9026a04e4a7f20240f699133eef24a969e242afdd471ad0a179cefe3
SHA5120f2a88f96a8a47abe062ccca986d2b3d98310374629c9067b19dbfeb73f23ba411b3ca5ae3877684770fb2d25947305b42c38a913a329e6220de6cd5d539a8ca