Analysis
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max time kernel
119s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
03-12-2024 17:58
Static task
static1
Behavioral task
behavioral1
Sample
4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe
Resource
win10v2004-20241007-en
General
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Target
4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe
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Size
980KB
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MD5
5a1d67104626806bdbc74cd6fbe0af6d
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SHA1
69869281403a2a11c7c99f338736b5ef247fffd8
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SHA256
4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e
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SHA512
bdcd851a6ae6b37bf372a18756d8c497a0cd86e1bba7076ade6342ea886943d0a5ae621fd0eb82b400f7b14d12ef1a4a163b315285f837c3b655be1c36efed97
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SSDEEP
12288:x2LaKaEt0ymu5M2kqChPAxzlO50IoPWEu/8+l89R6WvEVr4aQxU9:xdnuahPS5nxTRdvEVr474
Malware Config
Extracted
njrat
0.7d
HacKed
127.0.0.1:5552
279f6960ed84a752570aca7fb2dc1552
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reg_key
279f6960ed84a752570aca7fb2dc1552
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splitter
|'|'|
Signatures
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Njrat family
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 3896 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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe -
Executes dropped EXE 2 IoCs
pid Process 5068 server.exe 4160 server.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\279f6960ed84a752570aca7fb2dc1552 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\279f6960ed84a752570aca7fb2dc1552 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 928 set thread context of 3780 928 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe 83 PID 5068 set thread context of 4160 5068 server.exe 91 -
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 5 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 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language server.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language server.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe -
Suspicious use of AdjustPrivilegeToken 29 IoCs
description pid Process Token: SeDebugPrivilege 928 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe Token: SeDebugPrivilege 5068 server.exe Token: SeDebugPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe Token: 33 4160 server.exe Token: SeIncBasePriorityPrivilege 4160 server.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 928 wrote to memory of 3780 928 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe 83 PID 928 wrote to memory of 3780 928 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe 83 PID 928 wrote to memory of 3780 928 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe 83 PID 928 wrote to memory of 3780 928 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe 83 PID 928 wrote to memory of 3780 928 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe 83 PID 3780 wrote to memory of 5068 3780 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe 87 PID 3780 wrote to memory of 5068 3780 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe 87 PID 3780 wrote to memory of 5068 3780 4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe 87 PID 5068 wrote to memory of 4160 5068 server.exe 91 PID 5068 wrote to memory of 4160 5068 server.exe 91 PID 5068 wrote to memory of 4160 5068 server.exe 91 PID 5068 wrote to memory of 4160 5068 server.exe 91 PID 5068 wrote to memory of 4160 5068 server.exe 91 PID 4160 wrote to memory of 3896 4160 server.exe 98 PID 4160 wrote to memory of 3896 4160 server.exe 98 PID 4160 wrote to memory of 3896 4160 server.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe"C:\Users\Admin\AppData\Local\Temp\4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:928 -
C:\Users\Admin\AppData\Local\Temp\4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exeC:\Users\Admin\AppData\Local\Temp\4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3780 -
C:\Users\Admin\AppData\Local\Temp\server.exe"C:\Users\Admin\AppData\Local\Temp\server.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5068 -
C:\Users\Admin\AppData\Local\Temp\server.exeC:\Users\Admin\AppData\Local\Temp\server.exe4⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4160 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE5⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:3896
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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
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\4c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e.exe.log
Filesize1KB
MD59a2d0ce437d2445330f2646472703087
SHA133c83e484a15f35c2caa3af62d5da6b7713a20ae
SHA25630ea2f716e85f8d14a201e3fb0897d745a01b113342dfb7a9b7ac133c4ef150c
SHA512a61d18d90bfad9ea8afdfa37537cfea3d5a3d0c161e323fa65840c283bdc87c3de85daaff5519beea2f2719eec1c68398eea8679b55ff733a61052f073162d5d
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Filesize
980KB
MD55a1d67104626806bdbc74cd6fbe0af6d
SHA169869281403a2a11c7c99f338736b5ef247fffd8
SHA2564c0dd651b91d4e3a13cc6e29398fee4cff9f2624727830273e09dea2f9b52e5e
SHA512bdcd851a6ae6b37bf372a18756d8c497a0cd86e1bba7076ade6342ea886943d0a5ae621fd0eb82b400f7b14d12ef1a4a163b315285f837c3b655be1c36efed97