njrat | be4e51ecca7a9cfb5ca39240ce27beea314be89af2bbf40dd4d5b2a8d3203c98

General

Target
18fd235145f8ab58e1459ca717da16f8_JaffaCakes118.exe
Size 31KB
Sample240505-x77clsbd8s
SHA256 be4e51ecca7a9cfb5ca39240ce27beea314be89af2bbf40dd4d5b2a8d3203c98
MD5 18fd235145f8ab58e1459ca717da16f8
SHA1 feccaf6747cbcb7d4adcec37886f107ed4135597
SHA512 0df79707f6d2b26d06c47827f8207b1c74322483676b7d7be72d28bb8bae6c54b2cef8c8ade5360fe87b6f21af0418b4bb87f0ee76ad42a2eb4e329dd3a44f45
SSDEEP 768:9reZyeOHxtgzxbSHXqrgf9dBvisoQmIDUu0tiNFj:kKauf/voQVkCj
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat evasion persistence trojan

Malware Config

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

pid	Process
2544	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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	18fd235145f8ab58e1459ca717da16f8_JaffaCakes118.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\77beb3e67b10486d166a5b0f147439dc.exe	AF.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\77beb3e67b10486d166a5b0f147439dc.exe	AF.exe

Executes dropped EXE 1 IoCs

pid	Process
3600	AF.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-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\77beb3e67b10486d166a5b0f147439dc = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\AF.exe\" .."	AF.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\77beb3e67b10486d166a5b0f147439dc = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\AF.exe\" .."	AF.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

description	pid	Process
Token: SeDebugPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe
Token: 33	3600	AF.exe
Token: SeIncBasePriorityPrivilege	3600	AF.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 3600	5004	18fd235145f8ab58e1459ca717da16f8_JaffaCakes118.exe	89
PID 5004 wrote to memory of 3600	5004	18fd235145f8ab58e1459ca717da16f8_JaffaCakes118.exe	89
PID 5004 wrote to memory of 3600	5004	18fd235145f8ab58e1459ca717da16f8_JaffaCakes118.exe	89
PID 3600 wrote to memory of 2544	3600	AF.exe	92
PID 3600 wrote to memory of 2544	3600	AF.exe	92
PID 3600 wrote to memory of 2544	3600	AF.exe	92

C:\Users\Admin\AppData\Local\Temp\18fd235145f8ab58e1459ca717da16f8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\18fd235145f8ab58e1459ca717da16f8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Users\Admin\AppData\Local\Temp\AF.exe
  "C:\Users\Admin\AppData\Local\Temp\AF.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3600
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\AF.exe" "AF.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2544

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

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

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

AF.exe

Path C:\Users\Admin\AppData\Local\Temp\AF.exe
Size 31KB
SHA256 be4e51ecca7a9cfb5ca39240ce27beea314be89af2bbf40dd4d5b2a8d3203c98
MD5 18fd235145f8ab58e1459ca717da16f8
SHA1 feccaf6747cbcb7d4adcec37886f107ed4135597
SHA512 0df79707f6d2b26d06c47827f8207b1c74322483676b7d7be72d28bb8bae6c54b2cef8c8ade5360fe87b6f21af0418b4bb87f0ee76ad42a2eb4e329dd3a44f45
SSDEEP 768:9reZyeOHxtgzxbSHXqrgf9dBvisoQmIDUu0tiNFj:kKauf/voQVkCj
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3600-15-0x00000000751B0000-0x0000000075761000-memory.dmp

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memory/3600-16-0x00000000751B0000-0x0000000075761000-memory.dmp

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memory/3600-18-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/5004-0-0x00000000751B2000-0x00000000751B3000-memory.dmp

Download

memory/5004-2-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/5004-1-0x00000000751B0000-0x0000000075761000-memory.dmp

Download

memory/5004-14-0x00000000751B0000-0x0000000075761000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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