njrat | af2f05611639653b5c588b25b9e42d57f53fd0262681f89f6acdc24b58887214

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/06/2024, 00:06

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General

Target
124f0c4eb8f2541064a57a7a145ff389.exe
Size 117KB
Sample240629-adq27swbpc
SHA256 af2f05611639653b5c588b25b9e42d57f53fd0262681f89f6acdc24b58887214
MD5 124f0c4eb8f2541064a57a7a145ff389
SHA1 18269a09370547026eec2786aeb1c2490c515cdf
SHA512 b0a1c753e7c3049f4ca26102d259589eb520ccf87506f821cb5b2befeb67558e61af9406542242dae82c585e006df5581d6b5ae8d2c82471cc485dcc7b027a5e
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDL2V:P5eznsjsguGDFqGZ2rDL2V
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
1236	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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	124f0c4eb8f2541064a57a7a145ff389.exe

Executes dropped EXE 2 IoCs

pid	Process
5080	chargeable.exe
3576	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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\124f0c4eb8f2541064a57a7a145ff389.exe"	124f0c4eb8f2541064a57a7a145ff389.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	124f0c4eb8f2541064a57a7a145ff389.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5080 set thread context of 3576	5080	chargeable.exe	102

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 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe
Token: 33	3576	chargeable.exe
Token: SeIncBasePriorityPrivilege	3576	chargeable.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4048 wrote to memory of 5080	4048	124f0c4eb8f2541064a57a7a145ff389.exe	101
PID 4048 wrote to memory of 5080	4048	124f0c4eb8f2541064a57a7a145ff389.exe	101
PID 4048 wrote to memory of 5080	4048	124f0c4eb8f2541064a57a7a145ff389.exe	101
PID 5080 wrote to memory of 3576	5080	chargeable.exe	102
PID 5080 wrote to memory of 3576	5080	chargeable.exe	102
PID 5080 wrote to memory of 3576	5080	chargeable.exe	102
PID 5080 wrote to memory of 3576	5080	chargeable.exe	102
PID 5080 wrote to memory of 3576	5080	chargeable.exe	102
PID 5080 wrote to memory of 3576	5080	chargeable.exe	102
PID 5080 wrote to memory of 3576	5080	chargeable.exe	102
PID 5080 wrote to memory of 3576	5080	chargeable.exe	102
PID 3576 wrote to memory of 1236	3576	chargeable.exe	104
PID 3576 wrote to memory of 1236	3576	chargeable.exe	104
PID 3576 wrote to memory of 1236	3576	chargeable.exe	104

C:\Users\Admin\AppData\Local\Temp\124f0c4eb8f2541064a57a7a145ff389.exe
"C:\Users\Admin\AppData\Local\Temp\124f0c4eb8f2541064a57a7a145ff389.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4048
- 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:3576
  - - 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:1236

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4168 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
1⤵
PID:4572

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 117KB
SHA256 f545faa44e3e187befb3b9e1bbb9961ef44054b26d9ad1211ad581e58e16a6e7
MD5 b0ef91070b3d025c85bd54ef29b16436
SHA1 6676ad7bdef825d22726b566c799113225279668
SHA512 f6d89791d24d1ec44486be47fd1c1933520702a8736fb40f47c821e4735001d952a93b050f9e3c2bb88f594a59f5d00f332dc62057c44d05e31dbec1e472c897
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDL2x:P5eznsjsguGDFqGZ2rDL2x
MD5 SHA1 SHA512 SSDEEP

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memory/3576-22-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/3576-27-0x00000000746D0000-0x0000000074C81000-memory.dmp

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memory/3576-28-0x00000000746D0000-0x0000000074C81000-memory.dmp

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memory/3576-29-0x00000000746D0000-0x0000000074C81000-memory.dmp

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memory/4048-6-0x00000000746D2000-0x00000000746D3000-memory.dmp

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memory/4048-7-0x00000000746D0000-0x0000000074C81000-memory.dmp

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memory/4048-8-0x00000000746D0000-0x0000000074C81000-memory.dmp

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memory/4048-2-0x00000000746D0000-0x0000000074C81000-memory.dmp

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memory/4048-21-0x00000000746D0000-0x0000000074C81000-memory.dmp

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memory/4048-0-0x00000000746D2000-0x00000000746D3000-memory.dmp

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memory/4048-1-0x00000000746D0000-0x0000000074C81000-memory.dmp

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memory/5080-19-0x00000000746D0000-0x0000000074C81000-memory.dmp

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memory/5080-26-0x00000000746D0000-0x0000000074C81000-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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