Analysis
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max time kernel
149s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
24-02-2024 17:12
Behavioral task
behavioral1
Sample
a24fece3e9e01f1a6bc4f7cb714014a2.exe
Resource
win7-20240221-en
General
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Target
a24fece3e9e01f1a6bc4f7cb714014a2.exe
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Size
275KB
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MD5
a24fece3e9e01f1a6bc4f7cb714014a2
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SHA1
01989aa4752c92cb00c6b8767306f3394b67ad28
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SHA256
645cf5b196cdba633bfafb1aa9b1ed04ffc9db6b6f12900049674747e3983d06
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SHA512
ea1b5ad531a6aed0ae8300b94f7d4d48dee47dc0919fe6bf46abdce881fe10875a354a51282839471fcb616981b5b621e2be0a9555a7709589bbf826860b262c
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SSDEEP
6144:pMBDE219hOFro7TsI4sRw844kFY1NRlE8A6QbEoeFjeZg2tkec3GsuI:bwTOFcXFJV4DkNRO8m9LgKD7sx
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 2 TTPs 1 IoCs
pid Process 4980 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-1-5-21-1392040655-2056082574-619088944-1000\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 3568 test.exe 3688 Explorer.exe -
resource yara_rule behavioral2/memory/536-0-0x0000000000400000-0x0000000000498000-memory.dmp upx behavioral2/memory/536-21-0x0000000000400000-0x0000000000498000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1392040655-2056082574-619088944-1000\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 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe 3688 Explorer.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3688 Explorer.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 536 wrote to memory of 4252 536 a24fece3e9e01f1a6bc4f7cb714014a2.exe 90 PID 536 wrote to memory of 4252 536 a24fece3e9e01f1a6bc4f7cb714014a2.exe 90 PID 536 wrote to memory of 4252 536 a24fece3e9e01f1a6bc4f7cb714014a2.exe 90 PID 4252 wrote to memory of 3568 4252 cmd.exe 91 PID 4252 wrote to memory of 3568 4252 cmd.exe 91 PID 4252 wrote to memory of 3568 4252 cmd.exe 91 PID 3568 wrote to memory of 3688 3568 test.exe 93 PID 3568 wrote to memory of 3688 3568 test.exe 93 PID 3568 wrote to memory of 3688 3568 test.exe 93 PID 3688 wrote to memory of 4980 3688 Explorer.exe 95 PID 3688 wrote to memory of 4980 3688 Explorer.exe 95 PID 3688 wrote to memory of 4980 3688 Explorer.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\a24fece3e9e01f1a6bc4f7cb714014a2.exe"C:\Users\Admin\AppData\Local\Temp\a24fece3e9e01f1a6bc4f7cb714014a2.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:536 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c test.exe2⤵
- Suspicious use of WriteProcessMemory
PID:4252 -
C:\Users\Admin\AppData\Local\Temp\test.exetest.exe3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3568 -
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:3688 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Explorer.exe" "Explorer.exe" ENABLE5⤵
- Modifies Windows Firewall
PID:4980
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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
1Privilege Escalation
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