Analysis
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max time kernel
119s -
max time network
116s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
19-09-2024 07:15
Static task
static1
Behavioral task
behavioral1
Sample
ad21777c9591c33b563a53115f9db9461899805dfe9c73a690463074fa9f12cfN.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
ad21777c9591c33b563a53115f9db9461899805dfe9c73a690463074fa9f12cfN.exe
Resource
win10v2004-20240802-en
General
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Target
ad21777c9591c33b563a53115f9db9461899805dfe9c73a690463074fa9f12cfN.exe
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Size
128KB
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MD5
13c2a0a9fbc1649da8c50ce26b292440
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SHA1
958b633948884bebdaaec097495954ea181b5702
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SHA256
ad21777c9591c33b563a53115f9db9461899805dfe9c73a690463074fa9f12cf
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SHA512
efa1527c3c14934124299cea35f6b7822c2cf4ec04d8872b275f4e68370618c6323095df58a403cbd4d61866f8f8c7997da13ef42ab40f7e1caf8b63c5254648
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SSDEEP
3072:H42ScHsJXC/Uij87CW70PX9akYAMTxLkwJgt1aedys9jjYLde:Y2SdcJDak9YxLVgueXx
Malware Config
Extracted
njrat
0.7d
VIP@DUMP
volkatv500.sytes.net:999
e0bb29bc288c4cac846ed6aff410e0c6
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reg_key
e0bb29bc288c4cac846ed6aff410e0c6
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2820 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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation ad21777c9591c33b563a53115f9db9461899805dfe9c73a690463074fa9f12cfN.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e0bb29bc288c4cac846ed6aff410e0c6.exe winhelp.bat File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e0bb29bc288c4cac846ed6aff410e0c6.exe winhelp.bat -
Executes dropped EXE 1 IoCs
pid Process 3952 winhelp.bat -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e0bb29bc288c4cac846ed6aff410e0c6 = "\"C:\\Users\\Admin\\AppData\\Roaming\\winhelp.bat\" .." winhelp.bat Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e0bb29bc288c4cac846ed6aff410e0c6 = "\"C:\\Users\\Admin\\AppData\\Roaming\\winhelp.bat\" .." winhelp.bat -
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 queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh netsh.exe -
Suspicious use of AdjustPrivilegeToken 27 IoCs
description pid Process Token: SeDebugPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat Token: 33 3952 winhelp.bat Token: SeIncBasePriorityPrivilege 3952 winhelp.bat -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3828 wrote to memory of 3952 3828 ad21777c9591c33b563a53115f9db9461899805dfe9c73a690463074fa9f12cfN.exe 88 PID 3828 wrote to memory of 3952 3828 ad21777c9591c33b563a53115f9db9461899805dfe9c73a690463074fa9f12cfN.exe 88 PID 3952 wrote to memory of 2820 3952 winhelp.bat 91 PID 3952 wrote to memory of 2820 3952 winhelp.bat 91
Processes
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C:\Users\Admin\AppData\Local\Temp\ad21777c9591c33b563a53115f9db9461899805dfe9c73a690463074fa9f12cfN.exe"C:\Users\Admin\AppData\Local\Temp\ad21777c9591c33b563a53115f9db9461899805dfe9c73a690463074fa9f12cfN.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3828 -
C:\Users\Admin\AppData\Roaming\winhelp.bat"C:\Users\Admin\AppData\Roaming\winhelp.bat"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3952 -
C:\Windows\SYSTEM32\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\winhelp.bat" "winhelp.bat" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
PID:2820
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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
128KB
MD513c2a0a9fbc1649da8c50ce26b292440
SHA1958b633948884bebdaaec097495954ea181b5702
SHA256ad21777c9591c33b563a53115f9db9461899805dfe9c73a690463074fa9f12cf
SHA512efa1527c3c14934124299cea35f6b7822c2cf4ec04d8872b275f4e68370618c6323095df58a403cbd4d61866f8f8c7997da13ef42ab40f7e1caf8b63c5254648