njrat | 38e3d61fa81efc013d30939def97d7592e0dbb16e1057153c5e661843b587503

General

Target

ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.exe
Size

96KB
MD5

ae13d7f110850b45a19e2a7d5002a160
SHA1

5061d81b42d592e44fc763b806b3e28d09613e99
SHA256

38e3d61fa81efc013d30939def97d7592e0dbb16e1057153c5e661843b587503
SHA512

f392e39d037468b8ee55de702ea3596925b96342b7670a182c975a85b99d7e26c8aeb2921a5f3e378881e1fd5f798a1ebf39e1375791857cc664a70233d2a110
SSDEEP

1536:8/LZ8cCVzTK9Ol93Lh5C0tew6cZuL5HTc8Jti8vqjqitwL12:898xTdllPCWb6SuL5Hg8Jti8vWqitwL4

Score

10^/10

njrat p2p작업 evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

P2P작업

C2

jin98816.kro.kr:3

Mutex

809b6ef4fe234529ad0cd3a9dc9c84f6

Attributes

reg_key
809b6ef4fe234529ad0cd3a9dc9c84f6
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
1480	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\809b6ef4fe234529ad0cd3a9dc9c84f6.exe	dasHost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\809b6ef4fe234529ad0cd3a9dc9c84f6.exe	dasHost.exe

Executes dropped EXE 1 IoCs

pid	Process
2108	dasHost.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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\809b6ef4fe234529ad0cd3a9dc9c84f6 = "\"C:\\Users\\Admin\\dasHost.exe\" .."	dasHost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\809b6ef4fe234529ad0cd3a9dc9c84f6 = "\"C:\\Users\\Admin\\dasHost.exe\" .."	dasHost.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly	ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.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	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe
Token: 33	2108	dasHost.exe
Token: SeIncBasePriorityPrivilege	2108	dasHost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3412 wrote to memory of 2108	3412	ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.exe	86
PID 3412 wrote to memory of 2108	3412	ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.exe	86
PID 2108 wrote to memory of 1480	2108	dasHost.exe	90
PID 2108 wrote to memory of 1480	2108	dasHost.exe	90

C:\Users\Admin\AppData\Local\Temp\ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ae13d7f110850b45a19e2a7d5002a160_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3412
- C:\Users\Admin\dasHost.exe
  "C:\Users\Admin\dasHost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2108
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\dasHost.exe" "dasHost.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:1480

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\dasHost.exe

Filesize
96KB

MD5
ae13d7f110850b45a19e2a7d5002a160

SHA1
5061d81b42d592e44fc763b806b3e28d09613e99

SHA256
38e3d61fa81efc013d30939def97d7592e0dbb16e1057153c5e661843b587503

SHA512
f392e39d037468b8ee55de702ea3596925b96342b7670a182c975a85b99d7e26c8aeb2921a5f3e378881e1fd5f798a1ebf39e1375791857cc664a70233d2a110

Download Submit
memory/2108-48-0x00007FFC0D3B0000-0x00007FFC0DD51000-memory.dmp

Filesize
9.6MB

Download
memory/2108-55-0x00007FFC0D3B0000-0x00007FFC0DD51000-memory.dmp

Filesize
9.6MB

Download
memory/2108-54-0x0000000000F20000-0x0000000000F28000-memory.dmp

Filesize
32KB

Download
memory/2108-53-0x000000001C300000-0x000000001C39C000-memory.dmp

Filesize
624KB

Download
memory/2108-51-0x00007FFC0D3B0000-0x00007FFC0DD51000-memory.dmp

Filesize
9.6MB

Download
memory/2108-49-0x0000000000F90000-0x0000000000FA4000-memory.dmp

Filesize
80KB

Download
memory/2108-50-0x00007FFC0D3B0000-0x00007FFC0DD51000-memory.dmp

Filesize
9.6MB

Download
memory/3412-7-0x0000000001AB0000-0x0000000001ABC000-memory.dmp

Filesize
48KB

Download
memory/3412-47-0x00007FFC0D3B0000-0x00007FFC0DD51000-memory.dmp

Filesize
9.6MB

Download
memory/3412-8-0x000000001CBF0000-0x000000001CC96000-memory.dmp

Filesize
664KB

Download
memory/3412-6-0x00007FFC0D3B0000-0x00007FFC0DD51000-memory.dmp

Filesize
9.6MB

Download
memory/3412-0-0x00007FFC0D665000-0x00007FFC0D666000-memory.dmp

Filesize
4KB

Download
memory/3412-3-0x000000001BF40000-0x000000001BF54000-memory.dmp

Filesize
80KB

Download
memory/3412-2-0x000000001C430000-0x000000001C8FE000-memory.dmp

Filesize
4.8MB

Download
memory/3412-1-0x00007FFC0D3B0000-0x00007FFC0DD51000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads