njrat | a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016

General

Target

a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016.exe
Size

432KB
MD5

ad0f6231d44f6d0e08379256a3f765c0
SHA1

765c2ba3990b9c2a603a0012dfac8e34e39eda38
SHA256

a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016
SHA512

8bcf9c48c9137b897194cd757ff80153462ce2ad2f2d468ab70ba4479808f3a8bd99006d50a0802289de43092b7079286a86091674d0173325b50ad089309eb0
SSDEEP

96:fsDYb94x6pIEYaXcwhx5zWLYxT9FS7Z0epAIb+zNt:UEb94x8pYapz1WLOxU7Z0dcY

Score

10^/10

njrat 2021 evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

2021

C2

aqq.linkpc.net:999

Mutex

a1776750d898d3976ceabc94432acfb1

Attributes

reg_key
a1776750d898d3976ceabc94432acfb1
splitter
|'|'|

Signatures

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

1800 netsh.exe

pid	process
1800	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:

a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016.exe

Executes dropped EXE 1 IoCs

Processes:

System64.exe

pid process

3756 System64.exe

pid	process
3756	System64.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

System64.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a1776750d898d3976ceabc94432acfb1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\System64.exe\" .."	System64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a1776750d898d3976ceabc94432acfb1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\System64.exe\" .."	System64.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:

System64.exe

description	pid	process
Token: SeDebugPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe
Token: 33	3756	System64.exe
Token: SeIncBasePriorityPrivilege	3756	System64.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016.exeSystem64.exe

description	pid	process	target process
PID 3224 wrote to memory of 3756	3224	a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016.exe	System64.exe
PID 3224 wrote to memory of 3756	3224	a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016.exe	System64.exe
PID 3756 wrote to memory of 1800	3756	System64.exe	netsh.exe
PID 3756 wrote to memory of 1800	3756	System64.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016.exe
"C:\Users\Admin\AppData\Local\Temp\a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3224

C:\Users\Admin\AppData\Roaming\System64.exe
"C:\Users\Admin\AppData\Roaming\System64.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3756

C:\Windows\SYSTEM32\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\System64.exe" "System64.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:1800

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\System64.exe
Filesize
432KB

MD5
ad0f6231d44f6d0e08379256a3f765c0

SHA1
765c2ba3990b9c2a603a0012dfac8e34e39eda38

SHA256
a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016

SHA512
8bcf9c48c9137b897194cd757ff80153462ce2ad2f2d468ab70ba4479808f3a8bd99006d50a0802289de43092b7079286a86091674d0173325b50ad089309eb0

Download Submit
memory/3224-0-0x0000000000D20000-0x0000000000D92000-memory.dmp

Filesize
456KB

Download
memory/3224-1-0x0000000001540000-0x000000000154C000-memory.dmp

Filesize
48KB

Download
memory/3224-2-0x00007FFC5D430000-0x00007FFC5DEF1000-memory.dmp

Filesize
10.8MB

Download
memory/3224-15-0x00007FFC5D430000-0x00007FFC5DEF1000-memory.dmp

Filesize
10.8MB

Download
memory/3756-16-0x00007FFC5D430000-0x00007FFC5DEF1000-memory.dmp

Filesize
10.8MB

Download
memory/3756-17-0x000000001BC40000-0x000000001BC50000-memory.dmp

Filesize
64KB

Download
memory/3756-18-0x00007FFC5D430000-0x00007FFC5DEF1000-memory.dmp

Filesize
10.8MB

Download
memory/3756-19-0x000000001BC40000-0x000000001BC50000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads