njrat | e33e0c5feea6734224716cdcdf532bfeb950f456a482657c107184b3b67e7fe7

Analysis

max time kernel
146s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
15/05/2024, 22:16

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General

Target
3fa292457c7c6741564b4f640c264f7a.exe
Size 114KB
Sample240515-16rsbafa82
SHA256 e33e0c5feea6734224716cdcdf532bfeb950f456a482657c107184b3b67e7fe7
MD5 3fa292457c7c6741564b4f640c264f7a
SHA1 159cca13fb02e4ab311cd9ead02a8015cd6f88db
SHA512 2e7ba692cd2050f80206c06f84fb75295c13a9f84d144be286939b06496a3cd752b217c77df636b5e671810c4bfd63abe854f3f6b415749fe59b59095491c347
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDwR:P5eznsjsguGDFqGZ2rDwR
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
4024	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	3fa292457c7c6741564b4f640c264f7a.exe

Executes dropped EXE 2 IoCs

pid	Process
4800	chargeable.exe
2664	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"	3fa292457c7c6741564b4f640c264f7a.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\\3fa292457c7c6741564b4f640c264f7a.exe"	3fa292457c7c6741564b4f640c264f7a.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4800 set thread context of 2664	4800	chargeable.exe	97

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	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe
Token: 33	2664	chargeable.exe
Token: SeIncBasePriorityPrivilege	2664	chargeable.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4820 wrote to memory of 4800	4820	3fa292457c7c6741564b4f640c264f7a.exe	94
PID 4820 wrote to memory of 4800	4820	3fa292457c7c6741564b4f640c264f7a.exe	94
PID 4820 wrote to memory of 4800	4820	3fa292457c7c6741564b4f640c264f7a.exe	94
PID 4800 wrote to memory of 2664	4800	chargeable.exe	97
PID 4800 wrote to memory of 2664	4800	chargeable.exe	97
PID 4800 wrote to memory of 2664	4800	chargeable.exe	97
PID 4800 wrote to memory of 2664	4800	chargeable.exe	97
PID 4800 wrote to memory of 2664	4800	chargeable.exe	97
PID 4800 wrote to memory of 2664	4800	chargeable.exe	97
PID 4800 wrote to memory of 2664	4800	chargeable.exe	97
PID 4800 wrote to memory of 2664	4800	chargeable.exe	97
PID 2664 wrote to memory of 4024	2664	chargeable.exe	98
PID 2664 wrote to memory of 4024	2664	chargeable.exe	98
PID 2664 wrote to memory of 4024	2664	chargeable.exe	98

C:\Users\Admin\AppData\Local\Temp\3fa292457c7c6741564b4f640c264f7a.exe
"C:\Users\Admin\AppData\Local\Temp\3fa292457c7c6741564b4f640c264f7a.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4820
- 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:4800
- - 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:2664
  - - 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:4024

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 114KB
SHA256 38b6ab8b06a1c70de02e023dad7f236f780c651e493b1b8e0a13de5dda578844
MD5 4df3a16207f56c544b60af439996ea19
SHA1 0081250551ebeee0a51a22623d91a0c32f54116e
SHA512 dc4f35bbc510028cb53222de1dd0c34c9e79e2f3e9a3d06b0876720600c59309c0955e277b12cbf1647e86c5050ff6fb529bfddfc93a0d6e2751b9c6a83ae13d
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDwh:P5eznsjsguGDFqGZ2rDwh
MD5 SHA1 SHA512 SSDEEP

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memory/2664-19-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2664-23-0x0000000074E50000-0x0000000075401000-memory.dmp

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memory/2664-25-0x0000000074E50000-0x0000000075401000-memory.dmp

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memory/2664-26-0x0000000074E50000-0x0000000075401000-memory.dmp

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memory/2664-27-0x0000000074E50000-0x0000000075401000-memory.dmp

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memory/4800-18-0x0000000074E50000-0x0000000075401000-memory.dmp

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memory/4800-24-0x0000000074E50000-0x0000000075401000-memory.dmp

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memory/4820-2-0x0000000074E50000-0x0000000075401000-memory.dmp

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memory/4820-17-0x0000000074E50000-0x0000000075401000-memory.dmp

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memory/4820-0-0x0000000074E52000-0x0000000074E53000-memory.dmp

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memory/4820-1-0x0000000074E50000-0x0000000075401000-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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