Analysis
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max time kernel
389s -
max time network
387s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
09-07-2024 09:23
Behavioral task
behavioral1
Sample
Run.exe
Resource
win10-20240404-en
windows10-1703-x64
12 signatures
150 seconds
General
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Target
Run.exe
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Size
37KB
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MD5
3acdf1663d36a5f7c0f94d27469a70ad
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SHA1
162b240e72aa774a242d4ef1393b891f08fc16bf
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SHA256
1af573a3e51c01ff96ce9aff3c8e1a5e13a73dfad4cb740252769c803897efbb
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SHA512
0295ba59680cad6cc8df9660dff4d84d1c1a564afa321b972eb575dd9e17880ac9b525ffa0d037977cc41443138e0577de37b0533852765ba3576e097f64d090
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SSDEEP
384:YtVMiLJBndznNCyMGmN4y3VncG6DSprAF+rMRTyN/0L+EcoinblneHQM3epzXvz+:e/RNRMGmNJJd6ErM+rMRa8NuFKt
Malware Config
Extracted
Family
njrat
Version
im523
Botnet
RepoH2cker
C2
147.185.221.21:3238
Mutex
b9ac204121aeb89afba5c1de324757b0
Attributes
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reg_key
b9ac204121aeb89afba5c1de324757b0
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 4844 netsh.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b9ac204121aeb89afba5c1de324757b0.exe System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b9ac204121aeb89afba5c1de324757b0.exe System.exe -
Executes dropped EXE 1 IoCs
pid Process 1216 System.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows\CurrentVersion\Run\b9ac204121aeb89afba5c1de324757b0 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .." System.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\b9ac204121aeb89afba5c1de324757b0 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .." System.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 System.exe File opened for modification C:\autorun.inf System.exe File created D:\autorun.inf System.exe File created F:\autorun.inf System.exe File opened for modification F:\autorun.inf System.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe 1216 System.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1216 System.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe Token: SeIncBasePriorityPrivilege 1216 System.exe Token: 33 1216 System.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4988 wrote to memory of 1216 4988 Run.exe 74 PID 4988 wrote to memory of 1216 4988 Run.exe 74 PID 4988 wrote to memory of 1216 4988 Run.exe 74 PID 1216 wrote to memory of 4844 1216 System.exe 75 PID 1216 wrote to memory of 4844 1216 System.exe 75 PID 1216 wrote to memory of 4844 1216 System.exe 75
Processes
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C:\Users\Admin\AppData\Local\Temp\Run.exe"C:\Users\Admin\AppData\Local\Temp\Run.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4988 -
C:\Users\Admin\AppData\Local\Temp\System.exe"C:\Users\Admin\AppData\Local\Temp\System.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:1216 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\System.exe" "System.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
PID:4844
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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
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Replay Monitor
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Downloads
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Filesize
37KB
MD53acdf1663d36a5f7c0f94d27469a70ad
SHA1162b240e72aa774a242d4ef1393b891f08fc16bf
SHA2561af573a3e51c01ff96ce9aff3c8e1a5e13a73dfad4cb740252769c803897efbb
SHA5120295ba59680cad6cc8df9660dff4d84d1c1a564afa321b972eb575dd9e17880ac9b525ffa0d037977cc41443138e0577de37b0533852765ba3576e097f64d090