njrat | bc66d3fb87387c37d77d6ed2f5c713662c218dafb8f99587a5105d37490e5fa9

Analysis

max time kernel
115s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27/07/2024, 04:24

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General

Target
90331edee32c98e7f69136978c23ecd0N.exe
Size 118KB
Sample240727-e1rdpszfqh
SHA256 bc66d3fb87387c37d77d6ed2f5c713662c218dafb8f99587a5105d37490e5fa9
MD5 90331edee32c98e7f69136978c23ecd0
SHA1 e28d3e49fbb3c2382fb06f5a75ecb0f0cde8c7be
SHA512 5228a82d08fc92817e3d5342557c8a399478c2a41191eed8abd249958f55f3a64752701a8e20bd28244c3943087bcd33924f6967e793cf014663ca89c0d50111
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDLZ/623:P5eznsjsguGDFqGZ2rDLZ/T
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat neuf discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

neuf

doddyfire.linkpc.net:10000

Mutex

e1a87040f2026369a233f9ae76301b7b

Attributes

reg_key
e1a87040f2026369a233f9ae76301b7b
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2644	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-464762018-485119342-1613148473-1000\Control Panel\International\Geo\Nation	90331edee32c98e7f69136978c23ecd0N.exe

Executes dropped EXE 3 IoCs

pid	Process
4188	chargeable.exe
4276	chargeable.exe
2936	chargeable.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-464762018-485119342-1613148473-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	90331edee32c98e7f69136978c23ecd0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-464762018-485119342-1613148473-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\90331edee32c98e7f69136978c23ecd0N.exe"	90331edee32c98e7f69136978c23ecd0N.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4188 set thread context of 2936	4188	chargeable.exe	96
PID 4188 set thread context of 4276	4188	chargeable.exe	95

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2724	4276	WerFault.exe	95

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	90331edee32c98e7f69136978c23ecd0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chargeable.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chargeable.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe
Token: 33	2936	chargeable.exe
Token: SeIncBasePriorityPrivilege	2936	chargeable.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 4188	3312	90331edee32c98e7f69136978c23ecd0N.exe	92
PID 3312 wrote to memory of 4188	3312	90331edee32c98e7f69136978c23ecd0N.exe	92
PID 3312 wrote to memory of 4188	3312	90331edee32c98e7f69136978c23ecd0N.exe	92
PID 4188 wrote to memory of 4276	4188	chargeable.exe	95
PID 4188 wrote to memory of 4276	4188	chargeable.exe	95
PID 4188 wrote to memory of 4276	4188	chargeable.exe	95
PID 4188 wrote to memory of 2936	4188	chargeable.exe	96
PID 4188 wrote to memory of 2936	4188	chargeable.exe	96
PID 4188 wrote to memory of 2936	4188	chargeable.exe	96
PID 4188 wrote to memory of 2936	4188	chargeable.exe	96
PID 4188 wrote to memory of 2936	4188	chargeable.exe	96
PID 4188 wrote to memory of 2936	4188	chargeable.exe	96
PID 4188 wrote to memory of 2936	4188	chargeable.exe	96
PID 4188 wrote to memory of 2936	4188	chargeable.exe	96
PID 4188 wrote to memory of 4276	4188	chargeable.exe	95
PID 4188 wrote to memory of 4276	4188	chargeable.exe	95
PID 4188 wrote to memory of 4276	4188	chargeable.exe	95
PID 4188 wrote to memory of 4276	4188	chargeable.exe	95
PID 4188 wrote to memory of 4276	4188	chargeable.exe	95
PID 2936 wrote to memory of 2644	2936	chargeable.exe	100
PID 2936 wrote to memory of 2644	2936	chargeable.exe	100
PID 2936 wrote to memory of 2644	2936	chargeable.exe	100

C:\Users\Admin\AppData\Local\Temp\90331edee32c98e7f69136978c23ecd0N.exe
"C:\Users\Admin\AppData\Local\Temp\90331edee32c98e7f69136978c23ecd0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
  "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4188
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    PID:4276
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4276 -s 80
      4⤵
      Program crash
      PID:2724
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2936
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe" "chargeable.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:2644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4276 -ip 4276
1⤵
PID:1416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

chargeable.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\chargeable.exe.log
Size 400B
SHA256 c7effe9cb81a70d738dee863991afefab040290d4c4b78b4202383bcb9f88fcd
MD5 0a9b4592cd49c3c21f6767c2dabda92f
SHA1 f534297527ae5ccc0ecb2221ddeb8e58daeb8b74
SHA512 6b878df474e5bbfb8e9e265f15a76560c2ef151dcebc6388c82d7f6f86ffaf83f5ade5a09f1842e493cb6c8fd63b0b88d088c728fd725f7139f965a5ee332307
MD5 SHA1 SHA512

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chargeable.exe

Path C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
Size 118KB
SHA256 a1dd2321fe6099a54e83580f705323a4a91b8989d5f36d6e2fb29fc6649b78e5
MD5 caf7bcbcc681af33cb75f82cd24a3d96
SHA1 f85d05257817389316853b3874eecb196d162ac0
SHA512 74bc90d092322476a517d5341f29ec43a16a50e96c7285603cabbba94a0150260ec570a8cb7387f3a0d0fbed93b8a41d850af4accdb253fae23712a79289a884
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDLZ/622:P5eznsjsguGDFqGZ2rDLZ/S
MD5 SHA1 SHA512 SSDEEP

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memory/2936-21-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2936-27-0x0000000074E60000-0x0000000075411000-memory.dmp

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memory/2936-29-0x0000000074E60000-0x0000000075411000-memory.dmp

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memory/2936-30-0x0000000074E60000-0x0000000075411000-memory.dmp

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memory/3312-2-0x0000000074E60000-0x0000000075411000-memory.dmp

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memory/3312-0-0x0000000074E62000-0x0000000074E63000-memory.dmp

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memory/3312-17-0x0000000074E60000-0x0000000075411000-memory.dmp

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memory/3312-1-0x0000000074E60000-0x0000000075411000-memory.dmp

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memory/4188-18-0x0000000074E60000-0x0000000075411000-memory.dmp

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memory/4188-19-0x0000000074E60000-0x0000000075411000-memory.dmp

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memory/4188-20-0x0000000074E60000-0x0000000075411000-memory.dmp

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memory/4188-28-0x0000000074E60000-0x0000000075411000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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