njrat | 2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed

General

Target

2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed.exe
Size

23KB
MD5

33fa48b8911aa5aae81600d27c8956b1
SHA1

946ae9762e1535fc2829bcfa36efd7687924e001
SHA256

2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed
SHA512

4fb2d8611a22508066f4ae60684030615676b148c447f55b9f27e15624e67c093fef0885d014c031043be9b2c1beaae2da50980aec6544e7ed43bb1d8e592be7
SSDEEP

384:/sqCm6yocx/Yp7jemiO0nd08/VQ6bgNQC5h7tmRvR6JZlbw8hqIusZzZ5VVU:0SoQA6mlcrRpcnuCVO

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
4912	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	2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fe893b4a0c6852ab0746b97fce104bb9.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fe893b4a0c6852ab0746b97fce104bb9.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
3340	server.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\fe893b4a0c6852ab0746b97fce104bb9 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\fe893b4a0c6852ab0746b97fce104bb9 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.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 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

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	2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe
Token: 33	3340	server.exe
Token: SeIncBasePriorityPrivilege	3340	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 948 wrote to memory of 3340	948	2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed.exe	94
PID 948 wrote to memory of 3340	948	2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed.exe	94
PID 948 wrote to memory of 3340	948	2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed.exe	94
PID 3340 wrote to memory of 4912	3340	server.exe	98
PID 3340 wrote to memory of 4912	3340	server.exe	98
PID 3340 wrote to memory of 4912	3340	server.exe	98

C:\Users\Admin\AppData\Local\Temp\2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed.exe
"C:\Users\Admin\AppData\Local\Temp\2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:948
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.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:3340
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4912

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=4124,i,9445584274764997943,12714240264001792460,262144 --variations-seed-version --mojo-platform-channel-handle=4104 /prefetch:8
1⤵
PID:1856

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\server.exe

Filesize
23KB

MD5
33fa48b8911aa5aae81600d27c8956b1

SHA1
946ae9762e1535fc2829bcfa36efd7687924e001

SHA256
2b54d8ac1e78e75cc3737fe24ed0ad4ad558033f76feb1cee362b90fc215fbed

SHA512
4fb2d8611a22508066f4ae60684030615676b148c447f55b9f27e15624e67c093fef0885d014c031043be9b2c1beaae2da50980aec6544e7ed43bb1d8e592be7

Download Submit
memory/948-0-0x0000000074BE2000-0x0000000074BE3000-memory.dmp

Filesize
4KB

Download
memory/948-1-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/948-2-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/948-13-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3340-15-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3340-14-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3340-12-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3340-17-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3340-18-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download
memory/3340-19-0x0000000074BE0000-0x0000000075191000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads