Analysis
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max time kernel
150s -
max time network
156s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
07-10-2024 13:31
Behavioral task
behavioral1
Sample
19b3aca76d35b9d6ad75157d4d687523.exe
Resource
win7-20240903-en
windows7-x64
16 signatures
150 seconds
Behavioral task
behavioral2
Sample
19b3aca76d35b9d6ad75157d4d687523.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
16 signatures
150 seconds
General
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Target
19b3aca76d35b9d6ad75157d4d687523.exe
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Size
37KB
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MD5
19b3aca76d35b9d6ad75157d4d687523
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SHA1
6444a53e7789f1e488dfb9b559f093a6c7f9e225
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SHA256
b763242ac3be701e02827c840c602d7f9a82821221ebe5b091ce43d08a7bea7a
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SHA512
02b17da200f6a5dc71e0f006d0386756fe5c9d104f811999197491ea7b8624b72aea82771f5788ddb259e8d504b99127394147c64b882e21117455a71c196806
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SSDEEP
384:JeTMUiDHblmJEpRGyEfBffXuKCYyEAurAF+rMRTyN/0L+EcoinblneHQM3epzX6E:kTqHpR9EfBfWKClEHrM+rMRa8Nu0st
Malware Config
Extracted
Family
njrat
Version
im523
Botnet
HacKed
C2
0.tcp.eu.ngrok.io:17846
Mutex
4abfedaa0ee568854b2380a6728f3fe3
Attributes
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reg_key
4abfedaa0ee568854b2380a6728f3fe3
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2784 netsh.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4abfedaa0ee568854b2380a6728f3fe3.exe server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4abfedaa0ee568854b2380a6728f3fe3.exe server.exe -
Executes dropped EXE 1 IoCs
pid Process 2328 server.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\4abfedaa0ee568854b2380a6728f3fe3 = "\"C:\\Windows\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\4abfedaa0ee568854b2380a6728f3fe3 = "\"C:\\Windows\\server.exe\" .." server.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
flow ioc 2 0.tcp.eu.ngrok.io 12 0.tcp.eu.ngrok.io 41 0.tcp.eu.ngrok.io -
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 server.exe File opened for modification C:\autorun.inf server.exe File created D:\autorun.inf server.exe File created F:\autorun.inf server.exe File opened for modification F:\autorun.inf server.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File created C:\Windows\server.exe 19b3aca76d35b9d6ad75157d4d687523.exe File opened for modification C:\Windows\server.exe 19b3aca76d35b9d6ad75157d4d687523.exe File opened for modification C:\Windows\server.exe server.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 -
System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 19b3aca76d35b9d6ad75157d4d687523.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language server.exe -
Kills process with taskkill 1 IoCs
pid Process 2992 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe 2328 server.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2328 server.exe -
Suspicious use of AdjustPrivilegeToken 36 IoCs
description pid Process Token: SeDebugPrivilege 2328 server.exe Token: SeDebugPrivilege 2992 taskkill.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe Token: 33 2328 server.exe Token: SeIncBasePriorityPrivilege 2328 server.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1320 wrote to memory of 2328 1320 19b3aca76d35b9d6ad75157d4d687523.exe 29 PID 1320 wrote to memory of 2328 1320 19b3aca76d35b9d6ad75157d4d687523.exe 29 PID 1320 wrote to memory of 2328 1320 19b3aca76d35b9d6ad75157d4d687523.exe 29 PID 1320 wrote to memory of 2328 1320 19b3aca76d35b9d6ad75157d4d687523.exe 29 PID 2328 wrote to memory of 2784 2328 server.exe 30 PID 2328 wrote to memory of 2784 2328 server.exe 30 PID 2328 wrote to memory of 2784 2328 server.exe 30 PID 2328 wrote to memory of 2784 2328 server.exe 30 PID 2328 wrote to memory of 2992 2328 server.exe 32 PID 2328 wrote to memory of 2992 2328 server.exe 32 PID 2328 wrote to memory of 2992 2328 server.exe 32 PID 2328 wrote to memory of 2992 2328 server.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\19b3aca76d35b9d6ad75157d4d687523.exe"C:\Users\Admin\AppData\Local\Temp\19b3aca76d35b9d6ad75157d4d687523.exe"1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1320 -
C:\Windows\server.exe"C:\Windows\server.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops autorun.inf file
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2328 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Windows\server.exe" "server.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2784
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C:\Windows\SysWOW64\taskkill.exetaskkill /F /IM Exsample.exe3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2992
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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
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
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Downloads
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Filesize
37KB
MD519b3aca76d35b9d6ad75157d4d687523
SHA16444a53e7789f1e488dfb9b559f093a6c7f9e225
SHA256b763242ac3be701e02827c840c602d7f9a82821221ebe5b091ce43d08a7bea7a
SHA51202b17da200f6a5dc71e0f006d0386756fe5c9d104f811999197491ea7b8624b72aea82771f5788ddb259e8d504b99127394147c64b882e21117455a71c196806