Analysis
-
max time kernel
150s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
10-12-2024 18:11
Behavioral task
behavioral1
Sample
67931560029cc67967f024e3c42c107a.exe
Resource
win7-20240903-en
windows7-x64
16 signatures
150 seconds
Behavioral task
behavioral2
Sample
67931560029cc67967f024e3c42c107a.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
14 signatures
150 seconds
General
-
Target
67931560029cc67967f024e3c42c107a.exe
-
Size
37KB
-
MD5
67931560029cc67967f024e3c42c107a
-
SHA1
fed599a8ee2a821e9f93109d1e660118ff3f0451
-
SHA256
99e3e8a30f946770b612f530e63f0448d4e0dc261d165918b09abd2dd67d08c3
-
SHA512
85a9a9735e3ba7693ee3d01b808929e48e0ca7d03762ef54a1024ae89238d992310a575fd5c429c62cb2030732dd25033c1ce71e0320c196fd755d62f1c47a96
-
SSDEEP
384:GaiKMizdnjnBhFbJ8ycPzNX9Bwy25FrAF+rMRTyN/0L+EcoinblneHQM3epzXiNR:zignlLJfcPzNXt2zrM+rMRa8NuIVt
Malware Config
Extracted
Family
njrat
Version
im523
Botnet
HacKed
C2
45.83.207.236:5552
Mutex
c932779fadb451b44351b10e6e56bf73
Attributes
-
reg_key
c932779fadb451b44351b10e6e56bf73
-
splitter
|'|'|
Signatures
-
Njrat family
-
Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2596 netsh.exe -
Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c932779fadb451b44351b10e6e56bf73.exe UserOOBEBroker.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c932779fadb451b44351b10e6e56bf73.exe UserOOBEBroker.exe -
Executes dropped EXE 1 IoCs
pid Process 2680 UserOOBEBroker.exe -
Loads dropped DLL 1 IoCs
pid Process 2668 67931560029cc67967f024e3c42c107a.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\c932779fadb451b44351b10e6e56bf73 = "\"C:\\Users\\Admin\\UserOOBEBroker.exe\" .." UserOOBEBroker.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\c932779fadb451b44351b10e6e56bf73 = "\"C:\\Users\\Admin\\UserOOBEBroker.exe\" .." UserOOBEBroker.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 UserOOBEBroker.exe File opened for modification C:\autorun.inf UserOOBEBroker.exe File created D:\autorun.inf UserOOBEBroker.exe File created F:\autorun.inf UserOOBEBroker.exe File opened for modification F:\autorun.inf UserOOBEBroker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
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 67931560029cc67967f024e3c42c107a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language UserOOBEBroker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe -
Kills process with taskkill 1 IoCs
pid Process 2712 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe 2680 UserOOBEBroker.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2680 UserOOBEBroker.exe -
Suspicious use of AdjustPrivilegeToken 36 IoCs
description pid Process Token: SeDebugPrivilege 2680 UserOOBEBroker.exe Token: SeDebugPrivilege 2712 taskkill.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe Token: 33 2680 UserOOBEBroker.exe Token: SeIncBasePriorityPrivilege 2680 UserOOBEBroker.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2668 wrote to memory of 2680 2668 67931560029cc67967f024e3c42c107a.exe 30 PID 2668 wrote to memory of 2680 2668 67931560029cc67967f024e3c42c107a.exe 30 PID 2668 wrote to memory of 2680 2668 67931560029cc67967f024e3c42c107a.exe 30 PID 2668 wrote to memory of 2680 2668 67931560029cc67967f024e3c42c107a.exe 30 PID 2680 wrote to memory of 2596 2680 UserOOBEBroker.exe 31 PID 2680 wrote to memory of 2596 2680 UserOOBEBroker.exe 31 PID 2680 wrote to memory of 2596 2680 UserOOBEBroker.exe 31 PID 2680 wrote to memory of 2596 2680 UserOOBEBroker.exe 31 PID 2680 wrote to memory of 2712 2680 UserOOBEBroker.exe 33 PID 2680 wrote to memory of 2712 2680 UserOOBEBroker.exe 33 PID 2680 wrote to memory of 2712 2680 UserOOBEBroker.exe 33 PID 2680 wrote to memory of 2712 2680 UserOOBEBroker.exe 33
Processes
-
C:\Users\Admin\AppData\Local\Temp\67931560029cc67967f024e3c42c107a.exe"C:\Users\Admin\AppData\Local\Temp\67931560029cc67967f024e3c42c107a.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2668 -
C:\Users\Admin\UserOOBEBroker.exe"C:\Users\Admin\UserOOBEBroker.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops autorun.inf file
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2680 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\UserOOBEBroker.exe" "UserOOBEBroker.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2596
-
-
C:\Windows\SysWOW64\taskkill.exetaskkill /F /IM Exsample.exe3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2712
-
-
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
Loading Replay Monitor...
Downloads
-
Filesize
37KB
MD567931560029cc67967f024e3c42c107a
SHA1fed599a8ee2a821e9f93109d1e660118ff3f0451
SHA25699e3e8a30f946770b612f530e63f0448d4e0dc261d165918b09abd2dd67d08c3
SHA51285a9a9735e3ba7693ee3d01b808929e48e0ca7d03762ef54a1024ae89238d992310a575fd5c429c62cb2030732dd25033c1ce71e0320c196fd755d62f1c47a96