njrat | ae1383eb4d9bdf82e292bb96095fb8e46ffe89064c9b1da69a75cc9489123b13

General

Target

JaffaCakes118_c7f8e1955a3787c90a3556ae14052f72.exe
Size

31KB
MD5

c7f8e1955a3787c90a3556ae14052f72
SHA1

d00c9189d6ee235071b732a1068c5419eb9e6ad4
SHA256

ae1383eb4d9bdf82e292bb96095fb8e46ffe89064c9b1da69a75cc9489123b13
SHA512

bdf289ecf647b4b9abb2f3a19ad97a88f1090087e92d468e235c5447f58b678eff11fad4c3406c9cbea129fbb96cab852d9aad07b931e5a436af0cb74ea20310
SSDEEP

768:T98p5d5rLmzxBuJJKye8nu4LPv67QmIDUu0ti78j:SvKO+4jwQVkNj

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
2832	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c7f8e1955a3787c90a3556ae14052f72.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\95eba3b7e91ae89ec0605b1877e931a7.exe	aystem32.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\95eba3b7e91ae89ec0605b1877e931a7.exe	aystem32.exe

Executes dropped EXE 1 IoCs

pid	Process
5016	aystem32.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\95eba3b7e91ae89ec0605b1877e931a7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\aystem32.exe\" .."	aystem32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\95eba3b7e91ae89ec0605b1877e931a7 = "\"C:\\Users\\Admin\\AppData\\Roaming\\aystem32.exe\" .."	aystem32.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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	JaffaCakes118_c7f8e1955a3787c90a3556ae14052f72.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aystem32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe
Token: 33	5016	aystem32.exe
Token: SeIncBasePriorityPrivilege	5016	aystem32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 5016	2244	JaffaCakes118_c7f8e1955a3787c90a3556ae14052f72.exe	83
PID 2244 wrote to memory of 5016	2244	JaffaCakes118_c7f8e1955a3787c90a3556ae14052f72.exe	83
PID 2244 wrote to memory of 5016	2244	JaffaCakes118_c7f8e1955a3787c90a3556ae14052f72.exe	83
PID 5016 wrote to memory of 2832	5016	aystem32.exe	93
PID 5016 wrote to memory of 2832	5016	aystem32.exe	93
PID 5016 wrote to memory of 2832	5016	aystem32.exe	93

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c7f8e1955a3787c90a3556ae14052f72.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c7f8e1955a3787c90a3556ae14052f72.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Roaming\aystem32.exe
  "C:\Users\Admin\AppData\Roaming\aystem32.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:5016
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\aystem32.exe" "aystem32.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2832

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\aystem32.exe

Filesize
31KB

MD5
c7f8e1955a3787c90a3556ae14052f72

SHA1
d00c9189d6ee235071b732a1068c5419eb9e6ad4

SHA256
ae1383eb4d9bdf82e292bb96095fb8e46ffe89064c9b1da69a75cc9489123b13

SHA512
bdf289ecf647b4b9abb2f3a19ad97a88f1090087e92d468e235c5447f58b678eff11fad4c3406c9cbea129fbb96cab852d9aad07b931e5a436af0cb74ea20310

Download Submit
memory/2244-0-0x0000000075212000-0x0000000075213000-memory.dmp

Filesize
4KB

Download
memory/2244-1-0x0000000075210000-0x00000000757C1000-memory.dmp

Filesize
5.7MB

Download
memory/2244-2-0x0000000075210000-0x00000000757C1000-memory.dmp

Filesize
5.7MB

Download
memory/2244-13-0x0000000075210000-0x00000000757C1000-memory.dmp

Filesize
5.7MB

Download
memory/2244-12-0x0000000075210000-0x00000000757C1000-memory.dmp

Filesize
5.7MB

Download
memory/5016-14-0x0000000075210000-0x00000000757C1000-memory.dmp

Filesize
5.7MB

Download
memory/5016-15-0x0000000075210000-0x00000000757C1000-memory.dmp

Filesize
5.7MB

Download
memory/5016-17-0x0000000075210000-0x00000000757C1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads