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Analysis
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max time kernel
165s -
max time network
174s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
17/01/2024, 07:16
Behavioral task
behavioral1
Sample
620dbff61df2d779fc715becb07ce666.exe
Resource
win7-20231215-en
General
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Target
620dbff61df2d779fc715becb07ce666.exe
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Size
212KB
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MD5
620dbff61df2d779fc715becb07ce666
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SHA1
b992233848abee3899700d70307c05871726aa82
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SHA256
b6cdd4dd284aadc427da38c28402e27c39f323fedf774eda4df3913dfe92ab88
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SHA512
f15e164cb6c18e2b13a1e69c84315447d4c29efc67a030f3b42939e7fef6c2ccf85a33fa97bfe3e3efb3f09452bb4fbbf62d30ff819f8f1aaf894b280f9a4e5c
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SSDEEP
3072:RJacj8v7wQ+ZGx7w8wjjP8I1IU8RjrzzvUWAOZjfKdLnYP:RJPgv7wJZ87wBjYI1IUwrIOZyYP
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 2544 netsh.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 2780 test.exe 2732 Explorer.exe -
Loads dropped DLL 2 IoCs
pid Process 2820 cmd.exe 2780 test.exe -
resource yara_rule behavioral1/memory/2384-0-0x0000000000400000-0x0000000000498000-memory.dmp upx behavioral1/memory/2384-17-0x0000000000400000-0x0000000000498000-memory.dmp upx behavioral1/memory/2732-19-0x0000000002010000-0x0000000002050000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\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 31 IoCs
pid Process 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe 2732 Explorer.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2732 Explorer.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 2384 wrote to memory of 2820 2384 620dbff61df2d779fc715becb07ce666.exe 28 PID 2384 wrote to memory of 2820 2384 620dbff61df2d779fc715becb07ce666.exe 28 PID 2384 wrote to memory of 2820 2384 620dbff61df2d779fc715becb07ce666.exe 28 PID 2384 wrote to memory of 2820 2384 620dbff61df2d779fc715becb07ce666.exe 28 PID 2820 wrote to memory of 2780 2820 cmd.exe 29 PID 2820 wrote to memory of 2780 2820 cmd.exe 29 PID 2820 wrote to memory of 2780 2820 cmd.exe 29 PID 2820 wrote to memory of 2780 2820 cmd.exe 29 PID 2780 wrote to memory of 2732 2780 test.exe 30 PID 2780 wrote to memory of 2732 2780 test.exe 30 PID 2780 wrote to memory of 2732 2780 test.exe 30 PID 2780 wrote to memory of 2732 2780 test.exe 30 PID 2732 wrote to memory of 2544 2732 Explorer.exe 31 PID 2732 wrote to memory of 2544 2732 Explorer.exe 31 PID 2732 wrote to memory of 2544 2732 Explorer.exe 31 PID 2732 wrote to memory of 2544 2732 Explorer.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\620dbff61df2d779fc715becb07ce666.exe"C:\Users\Admin\AppData\Local\Temp\620dbff61df2d779fc715becb07ce666.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2384 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c test.exe2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2820 -
C:\Users\Admin\AppData\Local\Temp\test.exetest.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2780 -
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:2732 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Explorer.exe" "Explorer.exe" ENABLE5⤵
- Modifies Windows Firewall
PID:2544
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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
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Downloads
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Filesize
29KB
MD5fc42513e45503d510fb011bbb309e51e
SHA1e9741466f6e68dadb9e874f12d5b62fe14693741
SHA256766240fd9026a04e4a7f20240f699133eef24a969e242afdd471ad0a179cefe3
SHA5120f2a88f96a8a47abe062ccca986d2b3d98310374629c9067b19dbfeb73f23ba411b3ca5ae3877684770fb2d25947305b42c38a913a329e6220de6cd5d539a8ca