njrat | 8518b318def7cabe060d8639c6dc11076325e164a4faee7306f274a8abe1aa59

General

Target

b94ea2a4ba60943be5abe2b11ede9442.exe
Size

37KB
MD5

b94ea2a4ba60943be5abe2b11ede9442
SHA1

603fd44a999e270e36463b7a3cf82f30b3b3e10c
SHA256

8518b318def7cabe060d8639c6dc11076325e164a4faee7306f274a8abe1aa59
SHA512

9e03655c1fceabbcd9bd72cf44e377eb338e7b86fa942ddd3c27d91ba10c46141620eef87c402eaaf40b63df4d0370e14b1e761ac1edbbcbcbb078d36c6b95e8
SSDEEP

384:8SxcaCis//WRdL5kyc/p0P3XngacpMprAF+rMRTyN/0L+EcoinblneHQM3epzXWt:9xcUD5nc/p0f1c8rM+rMRa8Nu4nt

Score

10^/10

njrat hacked 3losh evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed 3losh

C2

0.tcp.in.ngrok.io:18640

Mutex

b96c10ee24d9b0b6dd6b3d186c6a1b2b

Attributes

reg_key
b96c10ee24d9b0b6dd6b3d186c6a1b2b
splitter
|'|'|

Signatures

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

Processes:

server.exe

pid process

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

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3560 netsh.exe

pid	process
396	server.exe

pid	process
3560	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:

b94ea2a4ba60943be5abe2b11ede9442.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	b94ea2a4ba60943be5abe2b11ede9442.exe

Drops startup file 2 IoCs

Processes:

server.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b96c10ee24d9b0b6dd6b3d186c6a1b2b.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b96c10ee24d9b0b6dd6b3d186c6a1b2b.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\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b96c10ee24d9b0b6dd6b3d186c6a1b2b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\b96c10ee24d9b0b6dd6b3d186c6a1b2b = "\"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). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 33 IoCs

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe
Token: 33	396	server.exe
Token: SeIncBasePriorityPrivilege	396	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

b94ea2a4ba60943be5abe2b11ede9442.exeserver.exe

description	pid	process	target process
PID 4244 wrote to memory of 396	4244	b94ea2a4ba60943be5abe2b11ede9442.exe	server.exe
PID 4244 wrote to memory of 396	4244	b94ea2a4ba60943be5abe2b11ede9442.exe	server.exe
PID 4244 wrote to memory of 396	4244	b94ea2a4ba60943be5abe2b11ede9442.exe	server.exe
PID 396 wrote to memory of 3560	396	server.exe	netsh.exe
PID 396 wrote to memory of 3560	396	server.exe	netsh.exe
PID 396 wrote to memory of 3560	396	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\b94ea2a4ba60943be5abe2b11ede9442.exe
"C:\Users\Admin\AppData\Local\Temp\b94ea2a4ba60943be5abe2b11ede9442.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4244

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:396

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:3560

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\server.exe
Filesize
37KB

MD5
b94ea2a4ba60943be5abe2b11ede9442

SHA1
603fd44a999e270e36463b7a3cf82f30b3b3e10c

SHA256
8518b318def7cabe060d8639c6dc11076325e164a4faee7306f274a8abe1aa59

SHA512
9e03655c1fceabbcd9bd72cf44e377eb338e7b86fa942ddd3c27d91ba10c46141620eef87c402eaaf40b63df4d0370e14b1e761ac1edbbcbcbb078d36c6b95e8

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe
Filesize
37KB

MD5
b94ea2a4ba60943be5abe2b11ede9442

SHA1
603fd44a999e270e36463b7a3cf82f30b3b3e10c

SHA256
8518b318def7cabe060d8639c6dc11076325e164a4faee7306f274a8abe1aa59

SHA512
9e03655c1fceabbcd9bd72cf44e377eb338e7b86fa942ddd3c27d91ba10c46141620eef87c402eaaf40b63df4d0370e14b1e761ac1edbbcbcbb078d36c6b95e8

Download Submit
memory/396-133-0x0000000000000000-mapping.dmp

Download
memory/396-137-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/396-139-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/3560-138-0x0000000000000000-mapping.dmp

Download
memory/4244-132-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download
memory/4244-136-0x0000000074F70000-0x0000000075521000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads