njrat | fb92f4bcee1c79fb56625d8c7a4f3e1f3b6cee63567eb49b6138ef5224ba5486

Analysis

max time kernel
146s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 11:11

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General

Target
1DE7EB7A3B3F987C9826C23BF38E1AA4.exe
Size 115KB
Sample240602-m99kmsca98
SHA256 fb92f4bcee1c79fb56625d8c7a4f3e1f3b6cee63567eb49b6138ef5224ba5486
MD5 1de7eb7a3b3f987c9826c23bf38e1aa4
SHA1 34cc55771ab42b0b53f804fa0fb670c49bb7da89
SHA512 a102ee6311c260d7deac6e81f9f43f6616b3d47b07a2a5b4a26518624648bacca05be23054b66ae35d1b1782b4a179c8d5ee0e947431d0b15a5df103791856d9
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDQgd:P5eznsjsguGDFqGZ2rDtd
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat neuf evasion 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

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1812	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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	1DE7EB7A3B3F987C9826C23BF38E1AA4.exe

Executes dropped EXE 2 IoCs

pid	Process
5080	chargeable.exe
1628	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-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	1DE7EB7A3B3F987C9826C23BF38E1AA4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1DE7EB7A3B3F987C9826C23BF38E1AA4.exe"	1DE7EB7A3B3F987C9826C23BF38E1AA4.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5080 set thread context of 1628	5080	chargeable.exe	93

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe
Token: 33	1628	chargeable.exe
Token: SeIncBasePriorityPrivilege	1628	chargeable.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4716 wrote to memory of 5080	4716	1DE7EB7A3B3F987C9826C23BF38E1AA4.exe	90
PID 4716 wrote to memory of 5080	4716	1DE7EB7A3B3F987C9826C23BF38E1AA4.exe	90
PID 4716 wrote to memory of 5080	4716	1DE7EB7A3B3F987C9826C23BF38E1AA4.exe	90
PID 5080 wrote to memory of 1628	5080	chargeable.exe	93
PID 5080 wrote to memory of 1628	5080	chargeable.exe	93
PID 5080 wrote to memory of 1628	5080	chargeable.exe	93
PID 5080 wrote to memory of 1628	5080	chargeable.exe	93
PID 5080 wrote to memory of 1628	5080	chargeable.exe	93
PID 5080 wrote to memory of 1628	5080	chargeable.exe	93
PID 5080 wrote to memory of 1628	5080	chargeable.exe	93
PID 5080 wrote to memory of 1628	5080	chargeable.exe	93
PID 1628 wrote to memory of 1812	1628	chargeable.exe	94
PID 1628 wrote to memory of 1812	1628	chargeable.exe	94
PID 1628 wrote to memory of 1812	1628	chargeable.exe	94

C:\Users\Admin\AppData\Local\Temp\1DE7EB7A3B3F987C9826C23BF38E1AA4.exe
"C:\Users\Admin\AppData\Local\Temp\1DE7EB7A3B3F987C9826C23BF38E1AA4.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4716
- 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:5080
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1628
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe" "chargeable.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:1812

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

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

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

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 115KB
SHA256 526d384a7dd950147ab7342bb56e178ca47eea1bbacee5a08c4db2c025e1f7c0
MD5 deb7777357bff8f71ec085b86c06a61a
SHA1 b2b589c2dbaa32943203e1ecf4606eba5d5aad5b
SHA512 dff66c589fff8156eefd3fc957c323ef8b7d1787b50a67140eefede2f6af6f966f15144504ee35451f258935d584d8a19acf052bd5e13e7d4a2cb1f9986b5983
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDQgb:P5eznsjsguGDFqGZ2rDtb
MD5 SHA1 SHA512 SSDEEP

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memory/1628-24-0x0000000075190000-0x0000000075741000-memory.dmp

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memory/1628-20-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/1628-26-0x0000000075190000-0x0000000075741000-memory.dmp

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memory/1628-27-0x0000000075190000-0x0000000075741000-memory.dmp

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memory/1628-28-0x0000000075190000-0x0000000075741000-memory.dmp

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memory/1628-29-0x0000000075190000-0x0000000075741000-memory.dmp

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memory/4716-2-0x0000000075190000-0x0000000075741000-memory.dmp

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memory/4716-17-0x0000000075190000-0x0000000075741000-memory.dmp

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memory/4716-1-0x0000000075190000-0x0000000075741000-memory.dmp

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memory/4716-0-0x0000000075192000-0x0000000075193000-memory.dmp

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memory/5080-18-0x0000000075190000-0x0000000075741000-memory.dmp

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memory/5080-19-0x0000000075190000-0x0000000075741000-memory.dmp

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memory/5080-25-0x0000000075190000-0x0000000075741000-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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