njrat | b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f

General

Target

b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f.exe
Size

22KB
MD5

fe2b09b85414dda6c35798d721230d91
SHA1

0f06cd896375532a7519c6b60a661fdc6ab5b9d6
SHA256

b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f
SHA512

cb2e7c9d5a0566d0ba0e1c177f52f3ce75f7ca0ba2d267dd0f32652b2376869c78a86aa4b833c83928c4eb7231be212a36ad97951c4ecc2eb819ef7fc11e95ab
SSDEEP

384:4Y324bcgPiJLQrfARGSRUJsbY6ZgvSMBD3t8mRvR6JZlbw8hqIusZzZOx:HL2s+tRyRpcnuZ

Score

10^/10

njrat victime 3 evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

victime 3

C2

skyb.ddns.net:1177

Mutex

5c63d5458f0081ca673dd26b3f18d976

Attributes

reg_key
5c63d5458f0081ca673dd26b3f18d976
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 1 IoCs

Processes:

server.exe

pid process

308 server.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4336 netsh.exe

pid	process
308	server.exe

pid	process
4336	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

Processes:

b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f.exe

Drops startup file 2 IoCs

Processes:

server.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5c63d5458f0081ca673dd26b3f18d976.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5c63d5458f0081ca673dd26b3f18d976.exe	server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

server.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\5c63d5458f0081ca673dd26b3f18d976 = "\"C:\\Users\\Admin\\AppData\\Roaming\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\5c63d5458f0081ca673dd26b3f18d976 = "\"C:\\Users\\Admin\\AppData\\Roaming\\server.exe\" .."	server.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 33 IoCs

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe
Token: 33	308	server.exe
Token: SeIncBasePriorityPrivilege	308	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f.exeserver.exe

description	pid	process	target process
PID 4252 wrote to memory of 308	4252	b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f.exe	server.exe
PID 4252 wrote to memory of 308	4252	b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f.exe	server.exe
PID 4252 wrote to memory of 308	4252	b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f.exe	server.exe
PID 308 wrote to memory of 4336	308	server.exe	netsh.exe
PID 308 wrote to memory of 4336	308	server.exe	netsh.exe
PID 308 wrote to memory of 4336	308	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f.exe
"C:\Users\Admin\AppData\Local\Temp\b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4252

C:\Users\Admin\AppData\Roaming\server.exe
"C:\Users\Admin\AppData\Roaming\server.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:308

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:4336

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\server.exe

Filesize
22KB

MD5
fe2b09b85414dda6c35798d721230d91

SHA1
0f06cd896375532a7519c6b60a661fdc6ab5b9d6

SHA256
b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f

SHA512
cb2e7c9d5a0566d0ba0e1c177f52f3ce75f7ca0ba2d267dd0f32652b2376869c78a86aa4b833c83928c4eb7231be212a36ad97951c4ecc2eb819ef7fc11e95ab

Download Submit
C:\Users\Admin\AppData\Roaming\server.exe

Filesize
22KB

MD5
fe2b09b85414dda6c35798d721230d91

SHA1
0f06cd896375532a7519c6b60a661fdc6ab5b9d6

SHA256
b71806f4fa839555a017676ad2371ede81fcc7fc2a772090ea3ac977af72151f

SHA512
cb2e7c9d5a0566d0ba0e1c177f52f3ce75f7ca0ba2d267dd0f32652b2376869c78a86aa4b833c83928c4eb7231be212a36ad97951c4ecc2eb819ef7fc11e95ab

Download Submit
memory/308-133-0x0000000000000000-mapping.dmp

Download
memory/308-137-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/308-139-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/4252-132-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/4252-136-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/4336-138-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads