njrat | c16f9b0d5806e82b7e32842e78d243ecaed45ec63fb2230268a0fe9172f56172

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
14-09-2024 08:51

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General

Target

dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe
Size

1.0MB
MD5

dfda8d9648d6afbeddffc0ac48d983c8
SHA1

26abf16d7da0611b60b00c7007752c05022147e8
SHA256

c16f9b0d5806e82b7e32842e78d243ecaed45ec63fb2230268a0fe9172f56172
SHA512

28c5286cb7cac652252c2f49f21b701d9403c8a7d97a6c20f2a26e5696dace16ec39dcbb381a85f4022c7b8e8ef34929220b7fdee2059ed39a8a8f42d96c341c
SSDEEP

24576:DEwIcDqQlKqNtTFrmL8QeogUQhhA5b4lypPMwY:xDqQhrTZqepDAV48PMf

Score

10^/10

njrat rex discovery trojan

Malware Config

Extracted

Family

njrat

Version

0.7.3

Botnet

REX

willyrex2020.publicvm.com:3040

Mutex

Client.exe

Attributes

reg_key
Client.exe
splitter
1234

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Loads dropped DLL 1 IoCs

pid	Process
2176	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\mshta.job	MSBuild.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2176	rundll32.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2176	rundll32.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe
Token: 33	2716	MSBuild.exe
Token: SeIncBasePriorityPrivilege	2716	MSBuild.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 2176	2216	dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe	30
PID 2216 wrote to memory of 2176	2216	dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe	30
PID 2216 wrote to memory of 2176	2216	dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe	30
PID 2216 wrote to memory of 2176	2216	dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe	30
PID 2216 wrote to memory of 2176	2216	dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe	30
PID 2216 wrote to memory of 2176	2216	dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe	30
PID 2216 wrote to memory of 2176	2216	dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe	30
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31
PID 2176 wrote to memory of 2716	2176	rundll32.exe	31

C:\Users\Admin\AppData\Local\Temp\dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dfda8d9648d6afbeddffc0ac48d983c8_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe PlayaPeppercorn,Output
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2176
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
    3⤵
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Euphorbium

Filesize
893KB

MD5
7bdfdcfb6044b454a3128b2efd7a5c3e

SHA1
ca2b489b027f6a97edbf7246d94c5d42098e098b

SHA256
d443a6a90ef5740ac7cbcb38b9093fc7017f61946660d432b5b14fe490043369

SHA512
91b0f93d99a5e9ef8e47533f63d616005df99eaf7e77303cad647f7bc96bff319123fd2a435e35c14a530a697fbe752723a8b2ce420dbda6f8e93459da7c4920

Download Submit
C:\Users\Admin\AppData\Local\Temp\PlayaPeppercorn.DLL

Filesize
44KB

MD5
2fd1d4cb3441a4d6ebb4956dd1ac37fa

SHA1
69ffdf0a02ef60ed7f92416361e93c435b61e16e

SHA256
f13706ccf8f5ce81d048ef1c8c58e290258c02b87c3ed640c07606db601882b4

SHA512
4fdcea08ca11cc67f153c94d9777c90d8221cbedf9302367ee98451619b2485ac0875d8efc18a14b64edec268dd7358e98cbb53a0874838b50321e443ea3deaf

Download Submit
memory/2176-27-0x0000000000110000-0x0000000000113000-memory.dmp

Filesize
12KB

Download
memory/2176-28-0x0000000074380000-0x00000000743D8000-memory.dmp

Filesize
352KB

Download
memory/2176-29-0x0000000074F70000-0x0000000074FA5000-memory.dmp

Filesize
212KB

Download
memory/2176-38-0x0000000074380000-0x00000000743D8000-memory.dmp

Filesize
352KB

Download
memory/2716-31-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2716-30-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2716-34-0x0000000073CA1000-0x0000000073CA2000-memory.dmp

Filesize
4KB

Download
memory/2716-35-0x0000000073CA0000-0x000000007424B000-memory.dmp

Filesize
5.7MB

Download
memory/2716-36-0x0000000073CA0000-0x000000007424B000-memory.dmp

Filesize
5.7MB

Download
memory/2716-33-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2716-37-0x0000000000090000-0x0000000000096000-memory.dmp

Filesize
24KB

Download
memory/2716-40-0x0000000073CA0000-0x000000007424B000-memory.dmp

Filesize
5.7MB

Download
memory/2716-41-0x0000000073CA0000-0x000000007424B000-memory.dmp

Filesize
5.7MB

Download