njrat | 3d817613e4b0b9e73bae444e2526f0eaf605ada7702e043b6311cde34e0517cc

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2024, 16:51

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General

Target
4664a681431939200277b47cf269fe11.exe
Size 115KB
Sample240627-vcsvmazhmd
SHA256 3d817613e4b0b9e73bae444e2526f0eaf605ada7702e043b6311cde34e0517cc
MD5 4664a681431939200277b47cf269fe11
SHA1 06959e3eb8527842b9cd744391c55b9c11bdbce3
SHA512 5c5fce3b83f1ef126ff77123d5ba3d81e5ebadcea85967a83c1cbb9f73d8188be77f118ca91e227d27ad0c5b802a52f506e8edbd62e0ad67a6d5b64902916364
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMN5Q:P5eznsjsguGDFqGZ2rN5Q
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat neuf 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
1676	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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	4664a681431939200277b47cf269fe11.exe

Executes dropped EXE 2 IoCs

pid	Process
2424	chargeable.exe
4700	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-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	4664a681431939200277b47cf269fe11.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4664a681431939200277b47cf269fe11.exe"	4664a681431939200277b47cf269fe11.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2424 set thread context of 4700	2424	chargeable.exe	81

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

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe
Token: 33	4700	chargeable.exe
Token: SeIncBasePriorityPrivilege	4700	chargeable.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 2424	1460	4664a681431939200277b47cf269fe11.exe	80
PID 1460 wrote to memory of 2424	1460	4664a681431939200277b47cf269fe11.exe	80
PID 1460 wrote to memory of 2424	1460	4664a681431939200277b47cf269fe11.exe	80
PID 2424 wrote to memory of 4700	2424	chargeable.exe	81
PID 2424 wrote to memory of 4700	2424	chargeable.exe	81
PID 2424 wrote to memory of 4700	2424	chargeable.exe	81
PID 2424 wrote to memory of 4700	2424	chargeable.exe	81
PID 2424 wrote to memory of 4700	2424	chargeable.exe	81
PID 2424 wrote to memory of 4700	2424	chargeable.exe	81
PID 2424 wrote to memory of 4700	2424	chargeable.exe	81
PID 2424 wrote to memory of 4700	2424	chargeable.exe	81
PID 4700 wrote to memory of 1676	4700	chargeable.exe	82
PID 4700 wrote to memory of 1676	4700	chargeable.exe	82
PID 4700 wrote to memory of 1676	4700	chargeable.exe	82

C:\Users\Admin\AppData\Local\Temp\4664a681431939200277b47cf269fe11.exe
"C:\Users\Admin\AppData\Local\Temp\4664a681431939200277b47cf269fe11.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1460
- 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:2424
- - 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:4700
  - - 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
      PID:1676

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

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 f9b097ce893780a81c22ef0a44068615e5a90d0a264c0727fe0e4f7d5a96d34d
MD5 7bb98262fcdbb66ffeb7a8c980330ca1
SHA1 81b568ba4771c0ade80af834699dfd37d9c82406
SHA512 9c52600a51c43a81921b0fa29f3ae875b83be90b03d738a8e9ff3b7bca4a070a6b91138ef6a66179937f54710d03145eb3c8fe0f0576e98627cfef6b466aefe4
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMN5O:P5eznsjsguGDFqGZ2rN5O
MD5 SHA1 SHA512 SSDEEP

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memory/1460-0-0x00000000748E2000-0x00000000748E3000-memory.dmp

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memory/1460-1-0x00000000748E0000-0x0000000074E91000-memory.dmp

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memory/1460-2-0x00000000748E0000-0x0000000074E91000-memory.dmp

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memory/1460-17-0x00000000748E0000-0x0000000074E91000-memory.dmp

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memory/2424-19-0x00000000748E0000-0x0000000074E91000-memory.dmp

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memory/2424-27-0x00000000748E0000-0x0000000074E91000-memory.dmp

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memory/2424-18-0x00000000748E0000-0x0000000074E91000-memory.dmp

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memory/4700-20-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/4700-25-0x00000000748E0000-0x0000000074E91000-memory.dmp

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memory/4700-26-0x00000000748E0000-0x0000000074E91000-memory.dmp

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memory/4700-24-0x00000000748E0000-0x0000000074E91000-memory.dmp

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memory/4700-28-0x00000000748E0000-0x0000000074E91000-memory.dmp

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memory/4700-29-0x00000000748E0000-0x0000000074E91000-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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