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Analysis
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max time kernel
149s -
max time network
147s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
21/01/2024, 06:32
Behavioral task
behavioral1
Sample
6c99f3e20d21888d14b34e64d96f6240.exe
Resource
win7-20231215-en
General
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Target
6c99f3e20d21888d14b34e64d96f6240.exe
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Size
212KB
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MD5
6c99f3e20d21888d14b34e64d96f6240
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SHA1
bc447d2005cdec372ca6a97effa299ba4380edf0
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SHA256
2ff273e496ec3d718580ffd12067a08a2d7c4c7804f1fff74682e706d83acf58
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SHA512
df1d0158e6ac77c5925bdcfe344730a1510f563468c1a7665a4cb9c65221f0702d833d06f7b6824b27a74976846e7b874ee53040e6b0f49923ac0cdba29e9cf6
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SSDEEP
3072:6Jacj8v7wQ+ZGx7w8wjjP8I1IU8RjrzzvUWAOZjfKdLOYU:6JPgv7wJZ87wBjYI1IUwrIOZyxU
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 2800 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 1628 test.exe 2756 Explorer.exe -
Loads dropped DLL 2 IoCs
pid Process 2328 cmd.exe 1628 test.exe -
resource yara_rule behavioral1/memory/2440-0-0x0000000000400000-0x0000000000498000-memory.dmp upx behavioral1/memory/2440-19-0x0000000000400000-0x0000000000498000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\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 34 IoCs
pid Process 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe 2756 Explorer.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2756 Explorer.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 2440 wrote to memory of 2328 2440 6c99f3e20d21888d14b34e64d96f6240.exe 29 PID 2440 wrote to memory of 2328 2440 6c99f3e20d21888d14b34e64d96f6240.exe 29 PID 2440 wrote to memory of 2328 2440 6c99f3e20d21888d14b34e64d96f6240.exe 29 PID 2440 wrote to memory of 2328 2440 6c99f3e20d21888d14b34e64d96f6240.exe 29 PID 2328 wrote to memory of 1628 2328 cmd.exe 30 PID 2328 wrote to memory of 1628 2328 cmd.exe 30 PID 2328 wrote to memory of 1628 2328 cmd.exe 30 PID 2328 wrote to memory of 1628 2328 cmd.exe 30 PID 1628 wrote to memory of 2756 1628 test.exe 31 PID 1628 wrote to memory of 2756 1628 test.exe 31 PID 1628 wrote to memory of 2756 1628 test.exe 31 PID 1628 wrote to memory of 2756 1628 test.exe 31 PID 2756 wrote to memory of 2800 2756 Explorer.exe 33 PID 2756 wrote to memory of 2800 2756 Explorer.exe 33 PID 2756 wrote to memory of 2800 2756 Explorer.exe 33 PID 2756 wrote to memory of 2800 2756 Explorer.exe 33
Processes
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C:\Users\Admin\AppData\Local\Temp\6c99f3e20d21888d14b34e64d96f6240.exe"C:\Users\Admin\AppData\Local\Temp\6c99f3e20d21888d14b34e64d96f6240.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2440 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c test.exe2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2328 -
C:\Users\Admin\AppData\Local\Temp\test.exetest.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1628 -
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:2756 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Explorer.exe" "Explorer.exe" ENABLE5⤵
- Modifies Windows Firewall
PID:2800
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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