njrat | b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c

General

Target

b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe
Size

876KB
MD5

53d77338b57f7f73ede130799c828c78
SHA1

fde1433b3e1d764c4418e028c37fd75be95f7908
SHA256

b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c
SHA512

f1c315c410581172dd6c52564f172c45203cde2c5e18f7287065fa4023f444b0399f23a1cb6d0ea1ffa861739ae0cdac6ee46b3500a1639298b5fa80b56970b3
SSDEEP

24576:R4lavt0LkLL9IMixoEgeaoyXPwq9MmCS:gkwkn9IMHeaolaPCS

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

UAC bypass 3 TTPs 2 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe

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

Processes:

netsh.exe

pid process

1660 netsh.exe

pid	process
1660	netsh.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe2610.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2610.exe

Executes dropped EXE 2 IoCs

Processes:

2610.exeserver.exe

pid process

904 2610.exe
796 server.exe

pid	process
904	2610.exe
796	server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

server.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\e229ec82a5ec02373072d0375052096f = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e229ec82a5ec02373072d0375052096f = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe
Token: 33	796	server.exe
Token: SeIncBasePriorityPrivilege	796	server.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe2610.exeserver.exe

description	pid	process	target process
PID 3532 wrote to memory of 904	3532	b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe	2610.exe
PID 3532 wrote to memory of 904	3532	b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe	2610.exe
PID 3532 wrote to memory of 904	3532	b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe	2610.exe
PID 904 wrote to memory of 796	904	2610.exe	server.exe
PID 904 wrote to memory of 796	904	2610.exe	server.exe
PID 904 wrote to memory of 796	904	2610.exe	server.exe
PID 796 wrote to memory of 1660	796	server.exe	netsh.exe
PID 796 wrote to memory of 1660	796	server.exe	netsh.exe
PID 796 wrote to memory of 1660	796	server.exe	netsh.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe

C:\Users\Admin\AppData\Local\Temp\b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe
"C:\Users\Admin\AppData\Local\Temp\b5e1be77b9170945e5281f262cd2b9ab72043a4295b5606eb43eb8362f8cc34c.exe"
1⤵
- UAC bypass
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3532

C:\Users\Admin\AppData\Local\Temp\2610\2610.exe
"C:\Users\Admin\AppData\Local\Temp\2610\2610.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:904

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:796

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
4⤵
- Modifies Windows Firewall
PID:1660

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

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

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

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\2610\2610.exe
Filesize
23KB

MD5
4abf570a817c250b77a9b4fce234d4f0

SHA1
ab826fabada5c2893043c8ad2daa321032d85727

SHA256
665c9c1e0fc46f97e902ac8046d9719661dd4b2e0a685b5e041c9a66c584c1b1

SHA512
a507011626379501e3b876249c82be446298b394993a70d66cf03205607233781414170d1042e0faa6efb67971b07c4b9dd41ec30648e6f5e0eec0508a153425

Download Submit
memory/796-29-0x0000000073A00000-0x0000000073FB1000-memory.dmp

Filesize
5.7MB

Download
memory/796-30-0x0000000073A00000-0x0000000073FB1000-memory.dmp

Filesize
5.7MB

Download
memory/796-31-0x0000000073A00000-0x0000000073FB1000-memory.dmp

Filesize
5.7MB

Download
memory/904-16-0x0000000073A02000-0x0000000073A03000-memory.dmp

Filesize
4KB

Download
memory/904-17-0x0000000073A00000-0x0000000073FB1000-memory.dmp

Filesize
5.7MB

Download
memory/904-18-0x0000000073A00000-0x0000000073FB1000-memory.dmp

Filesize
5.7MB

Download
memory/904-28-0x0000000073A00000-0x0000000073FB1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads