njrat | fcac77f4a679adfb96b883375aa3f260f136a0001c1ab9163679223bb2b667b1

Analysis

max time kernel
114s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
14/08/2024, 15:00

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General

Target
2edc3e161b6e0ce7fb4af8957b076e00N.exe
Size 118KB
Sample240814-sdrmvaydja
SHA256 fcac77f4a679adfb96b883375aa3f260f136a0001c1ab9163679223bb2b667b1
MD5 2edc3e161b6e0ce7fb4af8957b076e00
SHA1 638b7188832f913bfe54561a10fa4343b6cafe29
SHA512 14eadf9d8efef159d8a617335be07cb62a9be4b286f10c4a1be3f91b84168055eb11e8c9e2cda17d7e70fee58fafa068455906a26e4c6d4510e7650d8b667a6a
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDL14FO46:P5eznsjsguGDFqGZ2rDL14FO46
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
112	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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	2edc3e161b6e0ce7fb4af8957b076e00N.exe

Executes dropped EXE 3 IoCs

pid	Process
752	chargeable.exe
2652	chargeable.exe
4792	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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	2edc3e161b6e0ce7fb4af8957b076e00N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\2edc3e161b6e0ce7fb4af8957b076e00N.exe"	2edc3e161b6e0ce7fb4af8957b076e00N.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 752 set thread context of 2652	752	chargeable.exe	95
PID 752 set thread context of 4792	752	chargeable.exe	94

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
2960	4792	WerFault.exe	94

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	2edc3e161b6e0ce7fb4af8957b076e00N.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	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe
Token: 33	2652	chargeable.exe
Token: SeIncBasePriorityPrivilege	2652	chargeable.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 812 wrote to memory of 752	812	2edc3e161b6e0ce7fb4af8957b076e00N.exe	89
PID 812 wrote to memory of 752	812	2edc3e161b6e0ce7fb4af8957b076e00N.exe	89
PID 812 wrote to memory of 752	812	2edc3e161b6e0ce7fb4af8957b076e00N.exe	89
PID 752 wrote to memory of 4792	752	chargeable.exe	94
PID 752 wrote to memory of 4792	752	chargeable.exe	94
PID 752 wrote to memory of 4792	752	chargeable.exe	94
PID 752 wrote to memory of 2652	752	chargeable.exe	95
PID 752 wrote to memory of 2652	752	chargeable.exe	95
PID 752 wrote to memory of 2652	752	chargeable.exe	95
PID 752 wrote to memory of 2652	752	chargeable.exe	95
PID 752 wrote to memory of 2652	752	chargeable.exe	95
PID 752 wrote to memory of 2652	752	chargeable.exe	95
PID 752 wrote to memory of 2652	752	chargeable.exe	95
PID 752 wrote to memory of 2652	752	chargeable.exe	95
PID 752 wrote to memory of 4792	752	chargeable.exe	94
PID 752 wrote to memory of 4792	752	chargeable.exe	94
PID 752 wrote to memory of 4792	752	chargeable.exe	94
PID 752 wrote to memory of 4792	752	chargeable.exe	94
PID 752 wrote to memory of 4792	752	chargeable.exe	94
PID 2652 wrote to memory of 112	2652	chargeable.exe	101
PID 2652 wrote to memory of 112	2652	chargeable.exe	101
PID 2652 wrote to memory of 112	2652	chargeable.exe	101

C:\Users\Admin\AppData\Local\Temp\2edc3e161b6e0ce7fb4af8957b076e00N.exe
"C:\Users\Admin\AppData\Local\Temp\2edc3e161b6e0ce7fb4af8957b076e00N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:812
- 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:752
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    PID:4792
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4792 -s 80
      4⤵
      Program crash
      PID:2960
- - 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:2652
  - - 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:112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 4792 -ip 4792
1⤵
PID:2860

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 38615066450a66b2950aa946bf8eea01f16e1f0dfc7c0748609e195c317c2a7a
MD5 af005173cce1850423f0f999693487cb
SHA1 950bf700178ab02d75b959cf92f1d493acba31ef
SHA512 feb37c884eba52c5e74a3a9b1c604d42e6b25b98a1389ba9677361f756897d169824b9d7c214e150f6a1f07e7e63440baa07e6119aa08b919db0533a9fdb22bc
MD5 SHA1 SHA512

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chargeable.exe

Path C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
Size 118KB
SHA256 941612400e0fde5fed780bee732017f8ca322ac153f7e9e6b38271a2b2184f20
MD5 80e0e22f6086739202a3282a82009844
SHA1 fcbff99f414a5228bb6e5b6a362efc808c36c0c8
SHA512 0c8aec42e80ec874c76c89938119c435dd055e0e3a6ec759ab29793a08cb178a9022cb77077dc7645129a2690865fd2bf62bf53afd1c255c17bb93eb82c3c95e
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDL14FO4P:P5eznsjsguGDFqGZ2rDL14FO4P
MD5 SHA1 SHA512 SSDEEP

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memory/752-19-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/752-18-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/752-28-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/812-2-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/812-17-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/812-0-0x0000000075392000-0x0000000075393000-memory.dmp

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memory/812-1-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/2652-20-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2652-26-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/2652-27-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/2652-29-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/2652-30-0x0000000075390000-0x0000000075941000-memory.dmp

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memory/2652-31-0x0000000075390000-0x0000000075941000-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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