njrat | 6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
26/07/2024, 03:45

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General

Target
6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.exe
Size 111KB
Sample240726-ebbxqaxfmc
SHA256 6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699
MD5 1e78198830b293057b53f2f4d6979739
SHA1 600929803cec5b1bc75667ebbbdbaf0f2bc5f297
SHA512 022790c639240857c8b91ffa491d6df581a1774f1fa53566a8b8af3c72ddf84b6629814e763abfa97b272900eee45416e909a9aef9a15925197d779b36719e67
SSDEEP 1536:orp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4xtKegoxmOBh73T6:w5eznsjsguGDFqGx8egoxmO3rT6
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
4316	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-1-5-21-1403246978-718555486-3105247137-1000\Control Panel\International\Geo\Nation	6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.exe

Executes dropped EXE 3 IoCs

pid	Process
4976	chargeable.exe
3216	chargeable.exe
1956	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-1-5-21-1403246978-718555486-3105247137-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1403246978-718555486-3105247137-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.exe"	6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4976 set thread context of 3216	4976	chargeable.exe	95
PID 4976 set thread context of 1956	4976	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
3176	1956	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	6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.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	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe
Token: 33	3216	chargeable.exe
Token: SeIncBasePriorityPrivilege	3216	chargeable.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 4976	1692	6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.exe	91
PID 1692 wrote to memory of 4976	1692	6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.exe	91
PID 1692 wrote to memory of 4976	1692	6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.exe	91
PID 4976 wrote to memory of 1956	4976	chargeable.exe	94
PID 4976 wrote to memory of 1956	4976	chargeable.exe	94
PID 4976 wrote to memory of 1956	4976	chargeable.exe	94
PID 4976 wrote to memory of 3216	4976	chargeable.exe	95
PID 4976 wrote to memory of 3216	4976	chargeable.exe	95
PID 4976 wrote to memory of 3216	4976	chargeable.exe	95
PID 4976 wrote to memory of 3216	4976	chargeable.exe	95
PID 4976 wrote to memory of 3216	4976	chargeable.exe	95
PID 4976 wrote to memory of 3216	4976	chargeable.exe	95
PID 4976 wrote to memory of 3216	4976	chargeable.exe	95
PID 4976 wrote to memory of 3216	4976	chargeable.exe	95
PID 4976 wrote to memory of 1956	4976	chargeable.exe	94
PID 4976 wrote to memory of 1956	4976	chargeable.exe	94
PID 4976 wrote to memory of 1956	4976	chargeable.exe	94
PID 4976 wrote to memory of 1956	4976	chargeable.exe	94
PID 4976 wrote to memory of 1956	4976	chargeable.exe	94
PID 3216 wrote to memory of 4316	3216	chargeable.exe	99
PID 3216 wrote to memory of 4316	3216	chargeable.exe	99
PID 3216 wrote to memory of 4316	3216	chargeable.exe	99

C:\Users\Admin\AppData\Local\Temp\6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.exe
"C:\Users\Admin\AppData\Local\Temp\6fc287491ec03b06a9090223def2390687d22cd555f1dbe4c1df18e1cf622699.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1692
- 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:4976
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    PID:1956
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 80
      4⤵
      Program crash
      PID:3176
- - 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:3216
  - - 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:4316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1956 -ip 1956
1⤵
PID:2956

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 111KB
SHA256 2efd623e5db85642b96cf13bb4e0ddf623fd5502c595b04b0bfebe360db6f2ab
MD5 a724a8ea98aafd34ce00da3025f0469a
SHA1 d60635ea1dfc86a29ed4034e688bf221032cb435
SHA512 70dc1f8bc367bb45a183737ebba22f5d56e2560c969b7db11aae90ceda8cd78196f62125a651ed4fa03bf18aaf7fa417ab91a51cf032e0204a7e8e790cbfa082
SSDEEP 1536:orp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4xtKegoxmOBh73Tr:w5eznsjsguGDFqGx8egoxmO3rTr
MD5 SHA1 SHA512 SSDEEP

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memory/1692-2-0x0000000075520000-0x0000000075AD1000-memory.dmp

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memory/1692-0-0x0000000075522000-0x0000000075523000-memory.dmp

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memory/1692-17-0x0000000075520000-0x0000000075AD1000-memory.dmp

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memory/1692-1-0x0000000075520000-0x0000000075AD1000-memory.dmp

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memory/3216-21-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/3216-27-0x0000000075520000-0x0000000075AD1000-memory.dmp

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memory/3216-28-0x0000000075520000-0x0000000075AD1000-memory.dmp

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memory/3216-30-0x0000000075520000-0x0000000075AD1000-memory.dmp

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memory/4976-18-0x0000000075520000-0x0000000075AD1000-memory.dmp

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memory/4976-19-0x0000000075520000-0x0000000075AD1000-memory.dmp

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memory/4976-20-0x0000000075520000-0x0000000075AD1000-memory.dmp

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memory/4976-29-0x0000000075520000-0x0000000075AD1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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