njrat | 3c3a76b613083c05bb7db61c6b359870c2e90352076f2d32a9c96061494bab99

Analysis

max time kernel
150s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-09-2024 11:32

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General

Target

da41705c070ddbe50b4774857de19a74_JaffaCakes118.exe
Size

37KB
MD5

da41705c070ddbe50b4774857de19a74
SHA1

8871c7ce68dde674da05339f3a6d6d0eefb0bcb0
SHA256

3c3a76b613083c05bb7db61c6b359870c2e90352076f2d32a9c96061494bab99
SHA512

c1de464d1f2a3fb5bc95fb615f8909e8889383112691f10263d1bdf1aee94228c527d09caa195f6f40fe92e76cff0fb7eb679420390269e412f72143b0a30e9b
SSDEEP

384:Fq1eBaNit5FbOn0aH2ykrqIPlZWz/EAYrAF+rMRTyN/0L+EcoinblneHQM3epzXw:E1/aNWtkrqIdQ7EprM+rMRa8NuBwt

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

im523

79.140.166.40:22222

Mutex

af7a25d12a577183bc6b99084bac0e73

Attributes

reg_key
af7a25d12a577183bc6b99084bac0e73
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
2544	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\af7a25d12a577183bc6b99084bac0e73.exe	Microsoft.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\af7a25d12a577183bc6b99084bac0e73.exe	Microsoft.exe

Executes dropped EXE 1 IoCs

pid	Process
2748	Microsoft.exe

Loads dropped DLL 1 IoCs

pid	Process
2784	da41705c070ddbe50b4774857de19a74_JaffaCakes118.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-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\af7a25d12a577183bc6b99084bac0e73 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft.exe\" .."	Microsoft.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\af7a25d12a577183bc6b99084bac0e73 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft.exe\" .."	Microsoft.exe

Drops autorun.inf file 1 TTPs 5 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File created	F:\autorun.inf	Microsoft.exe
File opened for modification	F:\autorun.inf	Microsoft.exe
File created	C:\autorun.inf	Microsoft.exe
File opened for modification	C:\autorun.inf	Microsoft.exe
File created	D:\autorun.inf	Microsoft.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 4 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	Microsoft.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	da41705c070ddbe50b4774857de19a74_JaffaCakes118.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2596	taskkill.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe
2748	Microsoft.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2748	Microsoft.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	2748	Microsoft.exe
Token: SeDebugPrivilege	2596	taskkill.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe
Token: 33	2748	Microsoft.exe
Token: SeIncBasePriorityPrivilege	2748	Microsoft.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 2748	2784	da41705c070ddbe50b4774857de19a74_JaffaCakes118.exe	30
PID 2784 wrote to memory of 2748	2784	da41705c070ddbe50b4774857de19a74_JaffaCakes118.exe	30
PID 2784 wrote to memory of 2748	2784	da41705c070ddbe50b4774857de19a74_JaffaCakes118.exe	30
PID 2784 wrote to memory of 2748	2784	da41705c070ddbe50b4774857de19a74_JaffaCakes118.exe	30
PID 2748 wrote to memory of 2544	2748	Microsoft.exe	31
PID 2748 wrote to memory of 2544	2748	Microsoft.exe	31
PID 2748 wrote to memory of 2544	2748	Microsoft.exe	31
PID 2748 wrote to memory of 2544	2748	Microsoft.exe	31
PID 2748 wrote to memory of 2596	2748	Microsoft.exe	33
PID 2748 wrote to memory of 2596	2748	Microsoft.exe	33
PID 2748 wrote to memory of 2596	2748	Microsoft.exe	33
PID 2748 wrote to memory of 2596	2748	Microsoft.exe	33

C:\Users\Admin\AppData\Local\Temp\da41705c070ddbe50b4774857de19a74_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\da41705c070ddbe50b4774857de19a74_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Users\Admin\AppData\Roaming\Microsoft.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops autorun.inf file
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2748
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Microsoft.exe" "Microsoft.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2544
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM Exsample.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\Microsoft.exe

Filesize
37KB

MD5
da41705c070ddbe50b4774857de19a74

SHA1
8871c7ce68dde674da05339f3a6d6d0eefb0bcb0

SHA256
3c3a76b613083c05bb7db61c6b359870c2e90352076f2d32a9c96061494bab99

SHA512
c1de464d1f2a3fb5bc95fb615f8909e8889383112691f10263d1bdf1aee94228c527d09caa195f6f40fe92e76cff0fb7eb679420390269e412f72143b0a30e9b

Download Submit
memory/2748-10-0x0000000074430000-0x00000000749DB000-memory.dmp

Filesize
5.7MB

Download
memory/2748-12-0x0000000074430000-0x00000000749DB000-memory.dmp

Filesize
5.7MB

Download
memory/2748-22-0x0000000074430000-0x00000000749DB000-memory.dmp

Filesize
5.7MB

Download
memory/2748-23-0x0000000074430000-0x00000000749DB000-memory.dmp

Filesize
5.7MB

Download
memory/2748-24-0x0000000074430000-0x00000000749DB000-memory.dmp

Filesize
5.7MB

Download
memory/2784-0-0x0000000074431000-0x0000000074432000-memory.dmp

Filesize
4KB

Download
memory/2784-1-0x0000000074430000-0x00000000749DB000-memory.dmp

Filesize
5.7MB

Download
memory/2784-2-0x0000000074430000-0x00000000749DB000-memory.dmp

Filesize
5.7MB

Download
memory/2784-11-0x0000000074430000-0x00000000749DB000-memory.dmp

Filesize
5.7MB

Download