njrat | a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016

General

Target

JaffaCakes118_ad0f6231d44f6d0e08379256a3f765c0.exe
Size

432KB
MD5

ad0f6231d44f6d0e08379256a3f765c0
SHA1

765c2ba3990b9c2a603a0012dfac8e34e39eda38
SHA256

a665eae243d8d987de7378c95a9e7894d95b7ca6632e7455dcb9431870e67016
SHA512

8bcf9c48c9137b897194cd757ff80153462ce2ad2f2d468ab70ba4479808f3a8bd99006d50a0802289de43092b7079286a86091674d0173325b50ad089309eb0
SSDEEP

96:fsDYb94x6pIEYaXcwhx5zWLYxT9FS7Z0epAIb+zNt:UEb94x8pYapz1WLOxU7Z0dcY

Score

10^/10

njrat 2021 evasion persistence privilege_escalation 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 family
njrat
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

pid	Process
4448	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_ad0f6231d44f6d0e08379256a3f765c0.exe

Executes dropped EXE 1 IoCs

pid	Process
4664	System64.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\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

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe
Token: 33	4664	System64.exe
Token: SeIncBasePriorityPrivilege	4664	System64.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3504 wrote to memory of 4664	3504	JaffaCakes118_ad0f6231d44f6d0e08379256a3f765c0.exe	82
PID 3504 wrote to memory of 4664	3504	JaffaCakes118_ad0f6231d44f6d0e08379256a3f765c0.exe	82
PID 4664 wrote to memory of 4448	4664	System64.exe	87
PID 4664 wrote to memory of 4448	4664	System64.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ad0f6231d44f6d0e08379256a3f765c0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ad0f6231d44f6d0e08379256a3f765c0.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3504
- 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:4664
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\System64.exe" "System64.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:4448

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

Command and Control

Exfiltration

Impact

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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/3504-0-0x00007FFEBCFA3000-0x00007FFEBCFA5000-memory.dmp

Filesize
8KB

Download
memory/3504-1-0x0000000000430000-0x00000000004A2000-memory.dmp

Filesize
456KB

Download
memory/3504-2-0x0000000000C50000-0x0000000000C5C000-memory.dmp

Filesize
48KB

Download
memory/4664-15-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/4664-16-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/4664-17-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download
memory/4664-18-0x00007FFEBCFA0000-0x00007FFEBDA61000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads