njrat | f5c3ea5d83c91bbc77eeb5221e38bcbe276337b757d073fc2e812a68669f73ff

Analysis

max time kernel
93s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/06/2024, 02:55

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General

Target
1b6586e52dbbb523ba634b776930e318.exe
Size 114KB
Sample240609-dej7tsdc74
SHA256 f5c3ea5d83c91bbc77eeb5221e38bcbe276337b757d073fc2e812a68669f73ff
MD5 1b6586e52dbbb523ba634b776930e318
SHA1 294304b4cd4a40a911d62addee35c6d546057b27
SHA512 efe2be9c665b4dd0a510f227f8e678fe815265e9c5a393f737ba7228fad2ad56a2004280ee49c90969386acaecec73d4d0fc2019492470f13b5d5bd111bdb406
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDIN:P5eznsjsguGDFqGZ2rDIN
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat neuf persistence 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

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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	1b6586e52dbbb523ba634b776930e318.exe

Executes dropped EXE 2 IoCs

pid	Process
1820	chargeable.exe
3968	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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	1b6586e52dbbb523ba634b776930e318.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1b6586e52dbbb523ba634b776930e318.exe"	1b6586e52dbbb523ba634b776930e318.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1820 set thread context of 3968	1820	chargeable.exe	94

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process
5044	3968	WerFault.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 1820	1612	1b6586e52dbbb523ba634b776930e318.exe	93
PID 1612 wrote to memory of 1820	1612	1b6586e52dbbb523ba634b776930e318.exe	93
PID 1612 wrote to memory of 1820	1612	1b6586e52dbbb523ba634b776930e318.exe	93
PID 1820 wrote to memory of 3968	1820	chargeable.exe	94
PID 1820 wrote to memory of 3968	1820	chargeable.exe	94
PID 1820 wrote to memory of 3968	1820	chargeable.exe	94
PID 1820 wrote to memory of 3968	1820	chargeable.exe	94
PID 1820 wrote to memory of 3968	1820	chargeable.exe	94
PID 1820 wrote to memory of 3968	1820	chargeable.exe	94
PID 1820 wrote to memory of 3968	1820	chargeable.exe	94
PID 1820 wrote to memory of 3968	1820	chargeable.exe	94

C:\Users\Admin\AppData\Local\Temp\1b6586e52dbbb523ba634b776930e318.exe
"C:\Users\Admin\AppData\Local\Temp\1b6586e52dbbb523ba634b776930e318.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1612
- C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
  "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1820
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    PID:3968
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3968 -s 152
      4⤵
      Program crash
      PID:5044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3968 -ip 3968
1⤵
PID:2344

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

chargeable.exe

Path C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
Size 114KB
SHA256 1c59f070700d5225f763ff3fdf3d59ab4baaaa3eeeb228dfb6ab2caae6cca913
MD5 7eedcd5f8d6bfec14ba27dc0a326aaa2
SHA1 74471f8ad35ec76191552f4e7f39710a332bab1f
SHA512 200b79cde7cd3b699ad7aa4f4f8fbfe5ea26b894ceb018c2413c2ff3a82edcd7ce309657a725c6cf5119cea71609a229fde46a71b3058bc4499ba9420c118ae1
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDIf:P5eznsjsguGDFqGZ2rDIf
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1612-0-0x0000000075542000-0x0000000075543000-memory.dmp

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memory/1612-1-0x0000000075540000-0x0000000075AF1000-memory.dmp

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memory/1612-2-0x0000000075540000-0x0000000075AF1000-memory.dmp

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memory/1612-18-0x0000000075540000-0x0000000075AF1000-memory.dmp

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memory/1820-19-0x0000000075540000-0x0000000075AF1000-memory.dmp

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memory/1820-20-0x0000000075540000-0x0000000075AF1000-memory.dmp

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memory/1820-17-0x0000000075540000-0x0000000075AF1000-memory.dmp

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memory/1820-24-0x0000000075540000-0x0000000075AF1000-memory.dmp

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memory/3968-21-0x0000000000400000-0x000000000040C000-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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