njrat | 822a9469eaf5b3b0ae31894e56947bfd5a6da31bdf61dea587a1ee5320033977

General

Target

2332-4-0x00000000004B0000-0x00000000004BC000-memory.exe
Size

48KB
MD5

08ac6cae8cecbb9d013682a10c3235dc
SHA1

b82491cdf5a65dd3a4087c99f6451f9e7d7c93dc
SHA256

822a9469eaf5b3b0ae31894e56947bfd5a6da31bdf61dea587a1ee5320033977
SHA512

975bcfb120b089e666ccdc9a0bcfe773ce664d626ba8813a0fae335c000f8794be76f256fbf4c9acb58ae5908e731bfa212f3fe8f0535bc140b82d49f7ae1aa2
SSDEEP

384:3MK6b2GZsx/Yr1+liORH1kcPFQ6Lg9gSOYRr9mRvR6JZlbw8hqIusZzZlG3:Qb9glF51LRpcnuyA

Score

10^/10

njrat karla 1998 discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

KARLA 1998

C2

seznam.hopto.org:1177

Mutex

36db42ed563b740681ec3918ded7c343

Attributes

reg_key
36db42ed563b740681ec3918ded7c343
splitter
|'|'|

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
2700	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\36db42ed563b740681ec3918ded7c343.exe	facebok.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\36db42ed563b740681ec3918ded7c343.exe	facebok.exe

Executes dropped EXE 1 IoCs

pid	Process
2848	facebok.exe

Loads dropped DLL 1 IoCs

pid	Process
2736	2332-4-0x00000000004B0000-0x00000000004BC000-memory.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\36db42ed563b740681ec3918ded7c343 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\facebok.exe\" .."	facebok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\36db42ed563b740681ec3918ded7c343 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\facebok.exe\" .."	facebok.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	2332-4-0x00000000004B0000-0x00000000004BC000-memory.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	facebok.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe
Token: 33	2848	facebok.exe
Token: SeIncBasePriorityPrivilege	2848	facebok.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 2848	2736	2332-4-0x00000000004B0000-0x00000000004BC000-memory.exe	30
PID 2736 wrote to memory of 2848	2736	2332-4-0x00000000004B0000-0x00000000004BC000-memory.exe	30
PID 2736 wrote to memory of 2848	2736	2332-4-0x00000000004B0000-0x00000000004BC000-memory.exe	30
PID 2736 wrote to memory of 2848	2736	2332-4-0x00000000004B0000-0x00000000004BC000-memory.exe	30
PID 2848 wrote to memory of 2700	2848	facebok.exe	31
PID 2848 wrote to memory of 2700	2848	facebok.exe	31
PID 2848 wrote to memory of 2700	2848	facebok.exe	31
PID 2848 wrote to memory of 2700	2848	facebok.exe	31

C:\Users\Admin\AppData\Local\Temp\2332-4-0x00000000004B0000-0x00000000004BC000-memory.exe
"C:\Users\Admin\AppData\Local\Temp\2332-4-0x00000000004B0000-0x00000000004BC000-memory.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\Temp\facebok.exe
  "C:\Users\Admin\AppData\Local\Temp\facebok.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:2848
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\facebok.exe" "facebok.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2700

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\Local\Temp\facebok.exe

Filesize
48KB

MD5
08ac6cae8cecbb9d013682a10c3235dc

SHA1
b82491cdf5a65dd3a4087c99f6451f9e7d7c93dc

SHA256
822a9469eaf5b3b0ae31894e56947bfd5a6da31bdf61dea587a1ee5320033977

SHA512
975bcfb120b089e666ccdc9a0bcfe773ce664d626ba8813a0fae335c000f8794be76f256fbf4c9acb58ae5908e731bfa212f3fe8f0535bc140b82d49f7ae1aa2

Download Submit
memory/2736-0-0x0000000074081000-0x0000000074082000-memory.dmp

Filesize
4KB

Download
memory/2736-1-0x0000000074080000-0x000000007462B000-memory.dmp

Filesize
5.7MB

Download
memory/2736-2-0x0000000074080000-0x000000007462B000-memory.dmp

Filesize
5.7MB

Download
memory/2736-11-0x0000000074080000-0x000000007462B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-10-0x0000000074080000-0x000000007462B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-12-0x0000000074080000-0x000000007462B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-14-0x0000000074080000-0x000000007462B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads