njrat | 6ba6b4903ea4866951dd17956a816065f37face5a89c72d3878870c67df9ff0c

General

Target

03d42b442504337342a1e4a50c1cd6e1.exe
Size

37KB
MD5

03d42b442504337342a1e4a50c1cd6e1
SHA1

8a9a9cb36183a30e7fc72e9202351af3ac673ea1
SHA256

6ba6b4903ea4866951dd17956a816065f37face5a89c72d3878870c67df9ff0c
SHA512

ed65ecef63f80a4c22d4df48c44ae51b75c50f86d22c8492fe992dc6ce68e48f930f89b62afd197b8fd9e3d02e33468e10ded3d807184e0aad5c086f28bad681

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

0.tcp.eu.ngrok.io:10809

Mutex

4da733041df828afcc3b187c0133995e

Attributes

reg_key
4da733041df828afcc3b187c0133995e
splitter
|'|'|

Signatures

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

Processes:

System.exe

pid process

1908 System.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1944 netsh.exe

pid	process
1944	netsh.exe

Drops startup file 2 IoCs

Processes:

System.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4da733041df828afcc3b187c0133995e.exe	System.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4da733041df828afcc3b187c0133995e.exe	System.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

System.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-335065374-4263250628-1829373619-1000\Software\Microsoft\Windows\CurrentVersion\Run\4da733041df828afcc3b187c0133995e = "\"C:\\Windows\\System.exe\" .."	System.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\4da733041df828afcc3b187c0133995e = "\"C:\\Windows\\System.exe\" .."	System.exe

Drops autorun.inf file 1 TTPs 3 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media
T1091

Processes:

System.exe

description ioc process

File created C:\autorun.inf System.exe
File opened for modification C:\autorun.inf System.exe
File created D:\autorun.inf System.exe

description	ioc	process
File created	C:\autorun.inf	System.exe
File opened for modification	C:\autorun.inf	System.exe
File created	D:\autorun.inf	System.exe

Drops file in Windows directory 3 IoCs

Processes:

03d42b442504337342a1e4a50c1cd6e1.exeSystem.exe

description	ioc	process
File created	C:\Windows\System.exe	03d42b442504337342a1e4a50c1cd6e1.exe
File opened for modification	C:\Windows\System.exe	03d42b442504337342a1e4a50c1cd6e1.exe
File opened for modification	C:\Windows\System.exe	System.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

System.exe

pid	process
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe
1908	System.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

System.exe

pid process

1908 System.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

Processes:

System.exe

description	pid	process
Token: SeDebugPrivilege	1908	System.exe
Token: 33	1908	System.exe
Token: SeIncBasePriorityPrivilege	1908	System.exe
Token: 33	1908	System.exe
Token: SeIncBasePriorityPrivilege	1908	System.exe
Token: 33	1908	System.exe
Token: SeIncBasePriorityPrivilege	1908	System.exe
Token: 33	1908	System.exe
Token: SeIncBasePriorityPrivilege	1908	System.exe
Token: 33	1908	System.exe
Token: SeIncBasePriorityPrivilege	1908	System.exe
Token: 33	1908	System.exe
Token: SeIncBasePriorityPrivilege	1908	System.exe
Token: 33	1908	System.exe
Token: SeIncBasePriorityPrivilege	1908	System.exe
Token: 33	1908	System.exe
Token: SeIncBasePriorityPrivilege	1908	System.exe
Token: 33	1908	System.exe
Token: SeIncBasePriorityPrivilege	1908	System.exe
Token: 33	1908	System.exe
Token: SeIncBasePriorityPrivilege	1908	System.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

03d42b442504337342a1e4a50c1cd6e1.exeSystem.exe

description	pid	process	target process
PID 1752 wrote to memory of 1908	1752	03d42b442504337342a1e4a50c1cd6e1.exe	System.exe
PID 1752 wrote to memory of 1908	1752	03d42b442504337342a1e4a50c1cd6e1.exe	System.exe
PID 1752 wrote to memory of 1908	1752	03d42b442504337342a1e4a50c1cd6e1.exe	System.exe
PID 1752 wrote to memory of 1908	1752	03d42b442504337342a1e4a50c1cd6e1.exe	System.exe
PID 1908 wrote to memory of 1944	1908	System.exe	netsh.exe
PID 1908 wrote to memory of 1944	1908	System.exe	netsh.exe
PID 1908 wrote to memory of 1944	1908	System.exe	netsh.exe
PID 1908 wrote to memory of 1944	1908	System.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\03d42b442504337342a1e4a50c1cd6e1.exe
"C:\Users\Admin\AppData\Local\Temp\03d42b442504337342a1e4a50c1cd6e1.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1752

C:\Windows\System.exe
"C:\Windows\System.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Drops autorun.inf file
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Windows\System.exe" "System.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:1944

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1

T1091

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

System Information Discovery

1

T1082

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Windows\System.exe
Filesize
37KB

MD5
03d42b442504337342a1e4a50c1cd6e1

SHA1
8a9a9cb36183a30e7fc72e9202351af3ac673ea1

SHA256
6ba6b4903ea4866951dd17956a816065f37face5a89c72d3878870c67df9ff0c

SHA512
ed65ecef63f80a4c22d4df48c44ae51b75c50f86d22c8492fe992dc6ce68e48f930f89b62afd197b8fd9e3d02e33468e10ded3d807184e0aad5c086f28bad681

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

MD5
03d42b442504337342a1e4a50c1cd6e1

SHA1
8a9a9cb36183a30e7fc72e9202351af3ac673ea1

SHA256
6ba6b4903ea4866951dd17956a816065f37face5a89c72d3878870c67df9ff0c

SHA512
ed65ecef63f80a4c22d4df48c44ae51b75c50f86d22c8492fe992dc6ce68e48f930f89b62afd197b8fd9e3d02e33468e10ded3d807184e0aad5c086f28bad681

Download Submit
memory/1752-54-0x0000000075F81000-0x0000000075F83000-memory.dmp

Filesize
8KB

Download
memory/1752-55-0x0000000075000000-0x00000000755AB000-memory.dmp

Filesize
5.7MB

Download
memory/1752-60-0x0000000075000000-0x00000000755AB000-memory.dmp

Filesize
5.7MB

Download
memory/1908-56-0x0000000000000000-mapping.dmp

Download
memory/1908-61-0x0000000075000000-0x00000000755AB000-memory.dmp

Filesize
5.7MB

Download
memory/1908-64-0x0000000075000000-0x00000000755AB000-memory.dmp

Filesize
5.7MB

Download
memory/1944-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads