njrat | 18675bf38698c988e1d10313cb7e5e14e70c57ed409774129738ed06f45221d7

Analysis

max time kernel
114s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17/08/2024, 05:10

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General

Target
a3485b702501c9c4d4b9dc1936f804e0N.exe
Size 118KB
Sample240817-ft2rjayema
SHA256 18675bf38698c988e1d10313cb7e5e14e70c57ed409774129738ed06f45221d7
MD5 a3485b702501c9c4d4b9dc1936f804e0
SHA1 9dceabfaaa1f278ceb0628069cfb9adbd57b8c84
SHA512 8719e0a00fc4aef716baab23032dc22359d39fefb3a4805d281c42621388b407e45a3cfaa8982d92053fd2fd9fa121fe03bfb584eb76f9d16ad616aa0d228a92
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDLZ/6t:P5eznsjsguGDFqGZ2rDLZ/8
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
3720	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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	a3485b702501c9c4d4b9dc1936f804e0N.exe

Executes dropped EXE 2 IoCs

pid	Process
4548	chargeable.exe
3236	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-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	a3485b702501c9c4d4b9dc1936f804e0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a3485b702501c9c4d4b9dc1936f804e0N.exe"	a3485b702501c9c4d4b9dc1936f804e0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4548 set thread context of 3236	4548	chargeable.exe	96

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

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	a3485b702501c9c4d4b9dc1936f804e0N.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	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe
Token: 33	3236	chargeable.exe
Token: SeIncBasePriorityPrivilege	3236	chargeable.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 4548	3032	a3485b702501c9c4d4b9dc1936f804e0N.exe	93
PID 3032 wrote to memory of 4548	3032	a3485b702501c9c4d4b9dc1936f804e0N.exe	93
PID 3032 wrote to memory of 4548	3032	a3485b702501c9c4d4b9dc1936f804e0N.exe	93
PID 4548 wrote to memory of 3236	4548	chargeable.exe	96
PID 4548 wrote to memory of 3236	4548	chargeable.exe	96
PID 4548 wrote to memory of 3236	4548	chargeable.exe	96
PID 4548 wrote to memory of 3236	4548	chargeable.exe	96
PID 4548 wrote to memory of 3236	4548	chargeable.exe	96
PID 4548 wrote to memory of 3236	4548	chargeable.exe	96
PID 4548 wrote to memory of 3236	4548	chargeable.exe	96
PID 4548 wrote to memory of 3236	4548	chargeable.exe	96
PID 3236 wrote to memory of 3720	3236	chargeable.exe	97
PID 3236 wrote to memory of 3720	3236	chargeable.exe	97
PID 3236 wrote to memory of 3720	3236	chargeable.exe	97

C:\Users\Admin\AppData\Local\Temp\a3485b702501c9c4d4b9dc1936f804e0N.exe
"C:\Users\Admin\AppData\Local\Temp\a3485b702501c9c4d4b9dc1936f804e0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3032
- 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:4548
- - 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:3236
  - - 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:3720

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 52247a9b116347fd9a8553a3e23711673b265de67d61d90203603eb4a6c80459
MD5 8ad71f1f26149a32e03120efe1b3548f
SHA1 d181e3f45592b87cd81b0605269f43ca8d0dadda
SHA512 59d4afdf1d808e399bc81bc3c4e61d0d082e843c7f364f6b3f4454c1f6a27dd2fde09d5b1c9d8e15461cb7efd0237090b4b7c97ea386851bd75e27c0371628c9
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDLZ/6j:P5eznsjsguGDFqGZ2rDLZ/O
MD5 SHA1 SHA512 SSDEEP

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memory/3032-20-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/3032-1-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/3032-7-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/3032-2-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/3032-19-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/3032-6-0x0000000074B02000-0x0000000074B03000-memory.dmp

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memory/3032-0-0x0000000074B02000-0x0000000074B03000-memory.dmp

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memory/3236-24-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/3236-28-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/3236-29-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/3236-31-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/4548-22-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/4548-23-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/4548-21-0x0000000074B00000-0x00000000750B1000-memory.dmp

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memory/4548-30-0x0000000074B00000-0x00000000750B1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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