njrat | a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f

General

Target

a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe
Size

37KB
MD5

0cec5dc459979d97901084deeb06c866
SHA1

1af8b020f6d9f4e66f03289985e2ef4436c193b2
SHA256

a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f
SHA512

68b363ad3c9a45cce08781200d519ca6b57acc55726eb7df7c1444aaf7ba777b0f0196ccdb26d88b38ae7f01e37885cb6b52427021c5410b39e3164f44ca21a7

Score

10^/10

njrat hacked evasion trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

mypisa.ddns.net:4142

Mutex

782066a3aa8eb0d77b6878e27ff8d179

Attributes

reg_key
782066a3aa8eb0d77b6878e27ff8d179
splitter
|'|'|

Signatures

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

Processes:

System.exe

pid process

3576 System.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
3576	System.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:

a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe

Drops file in Windows directory 2 IoCs

Processes:

a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe

description	ioc	process
File created	C:\Windows\System.exe	a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe
File opened for modification	C:\Windows\System.exe	a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.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:

System.exe

description	pid	process
Token: SeDebugPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe
Token: 33	3576	System.exe
Token: SeIncBasePriorityPrivilege	3576	System.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exeSystem.exe

description	pid	process	target process
PID 2448 wrote to memory of 3576	2448	a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe	System.exe
PID 2448 wrote to memory of 3576	2448	a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe	System.exe
PID 2448 wrote to memory of 3576	2448	a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe	System.exe
PID 3576 wrote to memory of 3452	3576	System.exe	netsh.exe
PID 3576 wrote to memory of 3452	3576	System.exe	netsh.exe
PID 3576 wrote to memory of 3452	3576	System.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe
"C:\Users\Admin\AppData\Local\Temp\a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2448

C:\Windows\System.exe
"C:\Windows\System.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3576

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Windows\System.exe" "System.exe" ENABLE
3⤵
PID:3452

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Privilege Escalation

Defense Evasion

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:\Windows\System.exe
Filesize
37KB

MD5
0cec5dc459979d97901084deeb06c866

SHA1
1af8b020f6d9f4e66f03289985e2ef4436c193b2

SHA256
a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f

SHA512
68b363ad3c9a45cce08781200d519ca6b57acc55726eb7df7c1444aaf7ba777b0f0196ccdb26d88b38ae7f01e37885cb6b52427021c5410b39e3164f44ca21a7

Download Submit
C:\Windows\System.exe
Filesize
37KB

MD5
0cec5dc459979d97901084deeb06c866

SHA1
1af8b020f6d9f4e66f03289985e2ef4436c193b2

SHA256
a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f

SHA512
68b363ad3c9a45cce08781200d519ca6b57acc55726eb7df7c1444aaf7ba777b0f0196ccdb26d88b38ae7f01e37885cb6b52427021c5410b39e3164f44ca21a7

Download Submit
memory/2448-130-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/3452-135-0x0000000000000000-mapping.dmp

Download
memory/3576-131-0x0000000000000000-mapping.dmp

Download
memory/3576-134-0x00000000750D0000-0x0000000075681000-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