njrat | ef79bdac3d3f32794fcc1890c5695437b55c07b66727b111f11389a67b8a0fc6

General

Target

JaffaCakes118_57558006a115cac07d9bc8590f5b9412.exe
Size

64KB
MD5

57558006a115cac07d9bc8590f5b9412
SHA1

dec1af5806b2be08c1e70aa6309a70f9e6210388
SHA256

ef79bdac3d3f32794fcc1890c5695437b55c07b66727b111f11389a67b8a0fc6
SHA512

a28a1ca2642367ebc25e171e7987c832f636eebad763e84ea2776f9ec9f739e04bbd99f5ce599aa196ce903dcf852e50eac7848668485e10d1f1a6ae1fc5b146
SSDEEP

1536:XuabhTeXX/xFsfKs2SLD4nASOtMw7Oos:eatC7+Ks2gDPSOh

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

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
2940	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1748a69a1e6ea020fbf51f69f119677e.exe	ASystem.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1748a69a1e6ea020fbf51f69f119677e.exe	ASystem.exe

Executes dropped EXE 1 IoCs

pid	Process
2928	ASystem.exe

Loads dropped DLL 2 IoCs

pid	Process
2232	JaffaCakes118_57558006a115cac07d9bc8590f5b9412.exe
2232	JaffaCakes118_57558006a115cac07d9bc8590f5b9412.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\1748a69a1e6ea020fbf51f69f119677e = "\"C:\\Users\\Admin\\AppData\\Roaming\\ASystem.exe\" .."	ASystem.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\1748a69a1e6ea020fbf51f69f119677e = "\"C:\\Users\\Admin\\AppData\\Roaming\\ASystem.exe\" .."	ASystem.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\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ASystem.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_57558006a115cac07d9bc8590f5b9412.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2928	ASystem.exe
Token: 33	2928	ASystem.exe
Token: SeIncBasePriorityPrivilege	2928	ASystem.exe
Token: 33	2928	ASystem.exe
Token: SeIncBasePriorityPrivilege	2928	ASystem.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2928	2232	JaffaCakes118_57558006a115cac07d9bc8590f5b9412.exe	31
PID 2232 wrote to memory of 2928	2232	JaffaCakes118_57558006a115cac07d9bc8590f5b9412.exe	31
PID 2232 wrote to memory of 2928	2232	JaffaCakes118_57558006a115cac07d9bc8590f5b9412.exe	31
PID 2232 wrote to memory of 2928	2232	JaffaCakes118_57558006a115cac07d9bc8590f5b9412.exe	31
PID 2928 wrote to memory of 2940	2928	ASystem.exe	33
PID 2928 wrote to memory of 2940	2928	ASystem.exe	33
PID 2928 wrote to memory of 2940	2928	ASystem.exe	33
PID 2928 wrote to memory of 2940	2928	ASystem.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57558006a115cac07d9bc8590f5b9412.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57558006a115cac07d9bc8590f5b9412.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Users\Admin\AppData\Roaming\ASystem.exe
  "C:\Users\Admin\AppData\Roaming\ASystem.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2928
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\ASystem.exe" "ASystem.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2940

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\ASystem.exe

Filesize
64KB

MD5
57558006a115cac07d9bc8590f5b9412

SHA1
dec1af5806b2be08c1e70aa6309a70f9e6210388

SHA256
ef79bdac3d3f32794fcc1890c5695437b55c07b66727b111f11389a67b8a0fc6

SHA512
a28a1ca2642367ebc25e171e7987c832f636eebad763e84ea2776f9ec9f739e04bbd99f5ce599aa196ce903dcf852e50eac7848668485e10d1f1a6ae1fc5b146

Download Submit
memory/2232-0-0x00000000748F1000-0x00000000748F2000-memory.dmp

Filesize
4KB

Download
memory/2232-1-0x00000000748F0000-0x0000000074E9B000-memory.dmp

Filesize
5.7MB

Download
memory/2232-2-0x00000000748F0000-0x0000000074E9B000-memory.dmp

Filesize
5.7MB

Download
memory/2232-3-0x00000000748F0000-0x0000000074E9B000-memory.dmp

Filesize
5.7MB

Download
memory/2232-16-0x00000000748F0000-0x0000000074E9B000-memory.dmp

Filesize
5.7MB

Download
memory/2928-14-0x00000000748F0000-0x0000000074E9B000-memory.dmp

Filesize
5.7MB

Download
memory/2928-15-0x00000000748F0000-0x0000000074E9B000-memory.dmp

Filesize
5.7MB

Download
memory/2928-17-0x00000000748F0000-0x0000000074E9B000-memory.dmp

Filesize
5.7MB

Download
memory/2928-18-0x00000000748F0000-0x0000000074E9B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads