njrat | dec10b8896db38cadc312a885bd9022c9519679e0cef018288e2e3ae447fcb70

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
31/07/2024, 01:16

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General

Target
22df937e33e8a560430b38ed85a38f28.exe
Size 114KB
Sample240731-bmsstsyflj
SHA256 dec10b8896db38cadc312a885bd9022c9519679e0cef018288e2e3ae447fcb70
MD5 22df937e33e8a560430b38ed85a38f28
SHA1 1af219469049cf0fb521c949fbf4e43a4fdb1154
SHA512 e9393f2f60cd580c8f1809e6779f3613466a5a2cbec9cf1afb84350df66a71aaefa91a5bcd33bc8d9e32252da8f654fdfc060739bc3c625cc93f93f1375c7a1f
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMd18x:P5eznsjsguGDFqGZ2r7y
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
5056	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-1-5-21-3774859476-2260090144-3466365324-1000\Control Panel\International\Geo\Nation	22df937e33e8a560430b38ed85a38f28.exe

Executes dropped EXE 3 IoCs

pid	Process
3984	chargeable.exe
3676	chargeable.exe
2728	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-1-5-21-3774859476-2260090144-3466365324-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	22df937e33e8a560430b38ed85a38f28.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3774859476-2260090144-3466365324-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\22df937e33e8a560430b38ed85a38f28.exe"	22df937e33e8a560430b38ed85a38f28.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3984 set thread context of 3676	3984	chargeable.exe	86
PID 3984 set thread context of 2728	3984	chargeable.exe	85

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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1976	2728	WerFault.exe	85

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	22df937e33e8a560430b38ed85a38f28.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 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe
Token: 33	3676	chargeable.exe
Token: SeIncBasePriorityPrivilege	3676	chargeable.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 232 wrote to memory of 3984	232	22df937e33e8a560430b38ed85a38f28.exe	84
PID 232 wrote to memory of 3984	232	22df937e33e8a560430b38ed85a38f28.exe	84
PID 232 wrote to memory of 3984	232	22df937e33e8a560430b38ed85a38f28.exe	84
PID 3984 wrote to memory of 2728	3984	chargeable.exe	85
PID 3984 wrote to memory of 2728	3984	chargeable.exe	85
PID 3984 wrote to memory of 2728	3984	chargeable.exe	85
PID 3984 wrote to memory of 3676	3984	chargeable.exe	86
PID 3984 wrote to memory of 3676	3984	chargeable.exe	86
PID 3984 wrote to memory of 3676	3984	chargeable.exe	86
PID 3984 wrote to memory of 3676	3984	chargeable.exe	86
PID 3984 wrote to memory of 3676	3984	chargeable.exe	86
PID 3984 wrote to memory of 3676	3984	chargeable.exe	86
PID 3984 wrote to memory of 3676	3984	chargeable.exe	86
PID 3984 wrote to memory of 3676	3984	chargeable.exe	86
PID 3984 wrote to memory of 2728	3984	chargeable.exe	85
PID 3984 wrote to memory of 2728	3984	chargeable.exe	85
PID 3984 wrote to memory of 2728	3984	chargeable.exe	85
PID 3984 wrote to memory of 2728	3984	chargeable.exe	85
PID 3984 wrote to memory of 2728	3984	chargeable.exe	85
PID 3676 wrote to memory of 5056	3676	chargeable.exe	90
PID 3676 wrote to memory of 5056	3676	chargeable.exe	90
PID 3676 wrote to memory of 5056	3676	chargeable.exe	90

C:\Users\Admin\AppData\Local\Temp\22df937e33e8a560430b38ed85a38f28.exe
"C:\Users\Admin\AppData\Local\Temp\22df937e33e8a560430b38ed85a38f28.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:232
- 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:3984
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    PID:2728
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2728 -s 84
      4⤵
      Program crash
      PID:1976
- - 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:3676
  - - 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:5056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2728 -ip 2728
1⤵
PID:4604

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 114KB
SHA256 e595f4dd284f02182b45059a0b1df1d29c9dd66a2a785c81158405ed8dc45030
MD5 c401f4ac152ec7d60600b7c2c104695c
SHA1 2658ead7d357b2891be09f1d171ec1461cecd115
SHA512 31c56d255f5d111fa7089e27426251b978220c44a468fc2d8d438de09047ca438bb89598e82e8be0d372ac09b9ce3ed4d00a18478a84e1bad3fc052f6903b747
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMd18h:P5eznsjsguGDFqGZ2r7+
MD5 SHA1 SHA512 SSDEEP

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memory/232-0-0x00000000753A2000-0x00000000753A3000-memory.dmp

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memory/232-1-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/232-2-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/232-17-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/3676-19-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/3676-25-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/3676-27-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/3676-28-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/3984-18-0x00000000753A0000-0x0000000075951000-memory.dmp

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memory/3984-26-0x00000000753A0000-0x0000000075951000-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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