njrat | eb6191e041d18dd77fae0ab798b7f6ecd720e5645f472c45894890fe26811046

General

Target

AdflyBuilder/Adfly Builder.exe
Size

937KB
MD5

58580937b2ce68e14b392627035d5188
SHA1

d959cfe8f5fa2ca76e72d67420f9a36bfe33178a
SHA256

7d7969ac408adf06fd3dc573406d582e1f39711b19313ecab050f180ce074a75
SHA512

13d1564d4d03bf844ff73957c43c01ff901aa29122fb8b279ce59e66ed6c8abc3bf4b9128e095625858c7bf964cb87bfbd8dc5c542aa09e09b60ffab0ece7394
SSDEEP

12288:iCdOy3vVrKxR5CXbNjAOxK/j2n+4YG/6c1mFFja3mXgcjfRlgsUBgaXTYVfCJuk8:iCdxte/80jYLT3U1jfsWaDYBcmCtQ

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

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
936	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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	Adfly Builder.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4829f2df18fc09cf6c5e93c497d7648d.exe	checker.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4829f2df18fc09cf6c5e93c497d7648d.exe	checker.exe

Executes dropped EXE 2 IoCs

pid	Process
4892	checker.exe
5908	Adfly Builder.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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4829f2df18fc09cf6c5e93c497d7648d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\checker.exe\" .."	checker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4829f2df18fc09cf6c5e93c497d7648d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\checker.exe\" .."	checker.exe

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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adfly Builder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	checker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe
Token: 33	4892	checker.exe
Token: SeIncBasePriorityPrivilege	4892	checker.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
4604	Adfly Builder.exe
4604	Adfly Builder.exe
4604	Adfly Builder.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
4604	Adfly Builder.exe
4604	Adfly Builder.exe
4604	Adfly Builder.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4604 wrote to memory of 4892	4604	Adfly Builder.exe	89
PID 4604 wrote to memory of 4892	4604	Adfly Builder.exe	89
PID 4604 wrote to memory of 4892	4604	Adfly Builder.exe	89
PID 4604 wrote to memory of 5908	4604	Adfly Builder.exe	91
PID 4604 wrote to memory of 5908	4604	Adfly Builder.exe	91
PID 4892 wrote to memory of 936	4892	checker.exe	92
PID 4892 wrote to memory of 936	4892	checker.exe	92
PID 4892 wrote to memory of 936	4892	checker.exe	92

C:\Users\Admin\AppData\Local\Temp\AdflyBuilder\Adfly Builder.exe
"C:\Users\Admin\AppData\Local\Temp\AdflyBuilder\Adfly Builder.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\checker.exe
  "C:\Users\Admin\AppData\Local\Temp\checker.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4892
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\checker.exe" "checker.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:936
- C:\Users\Admin\AppData\Local\Temp\Adfly Builder.exe
  "C:\Users\Admin\AppData\Local\Temp\Adfly Builder.exe"
  2⤵
  - Executes dropped EXE
  PID:5908

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 --field-trial-handle=4300,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=4384 /prefetch:8
1⤵
PID:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Adfly Builder.exe

Filesize
12KB

MD5
931e027d41cafaf854963934efe9eeb8

SHA1
a7bf681905370432fe31d5dc36cfe0f8c4c4e7f5

SHA256
d22aec086bef76f1bec423e60a5316ef9506bbb0f1df53285df2666886ed347f

SHA512
02b4dd2e96da05853e86465bfb0265a72b69781c434d7dd3405555ca24a21fcddb64e0bea3829900e3d50167c1c419f0eaae6732c60eb5d08fb5097b6b4acb83

Download Submit
C:\Users\Admin\AppData\Local\Temp\checker.exe

Filesize
98KB

MD5
1e57f9adf20b9efdf71a2c725c7ba8c1

SHA1
5e1bdd9b97ef1615c4d9e3713d63428b563b83b4

SHA256
ee6fe21cba8506e50383393a3a58a1cfabb5e1593a1d2301bd7d070e49fdf97f

SHA512
af58a8075d9b72920bb94039a8d247045354fc740f8bed01fe204b8d5d69c43e3b6690c63ca02adceb9c7965c3ccb9aed01a522ede31ea6df9dd44805fcbd5f6

Download Submit
memory/4892-26-0x0000000073A42000-0x0000000073A44000-memory.dmp

Filesize
8KB

Download
memory/4892-20-0x0000000073A40000-0x0000000073FF1000-memory.dmp

Filesize
5.7MB

Download
memory/4892-19-0x0000000073A42000-0x0000000073A43000-memory.dmp

Filesize
4KB

Download
memory/4892-29-0x0000000073A42000-0x0000000073A43000-memory.dmp

Filesize
4KB

Download
memory/4892-30-0x0000000073A40000-0x0000000073FF1000-memory.dmp

Filesize
5.7MB

Download
memory/5908-21-0x00007FF9CE255000-0x00007FF9CE256000-memory.dmp

Filesize
4KB

Download
memory/5908-22-0x000000001BFD0000-0x000000001C49E000-memory.dmp

Filesize
4.8MB

Download
memory/5908-23-0x000000001C540000-0x000000001C5DC000-memory.dmp

Filesize
624KB

Download
memory/5908-24-0x00007FF9CDFA0000-0x00007FF9CE941000-memory.dmp

Filesize
9.6MB

Download
memory/5908-25-0x00007FF9CDFA0000-0x00007FF9CE941000-memory.dmp

Filesize
9.6MB

Download
memory/5908-27-0x00000000014A0000-0x00000000014A8000-memory.dmp

Filesize
32KB

Download
memory/5908-31-0x00007FF9CDFA0000-0x00007FF9CE941000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads