njrat | 97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1

General

Target

97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1.exe
Size

29KB
MD5

e60917239623e9b7b6e0f5b879c88ff0
SHA1

71a3c06515241b14227ca3a0131134da1c4dc747
SHA256

97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1
SHA512

446ce1d1e69f7cfb15505aa5dceba3d8a099cade946935f05cd507080bc41e325e27963267f7c3f0a22821e6b2121df914ad058c55549a0de1ae8c4c8d36ae83
SSDEEP

384:mYs5l7VL9skVQ42BkSv5dAsCGmqDm+jeI7GBsbh0w4wlAokw9OhgOL1vYRGOZzj:a7/skCXkQossqtje3BKh0p29SgR1i

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

HacKed

C2

aziza12.no-ip.biz:1177

Mutex

f26884cbd1211af8a3cd7b57fffc2aad

Attributes

reg_key
f26884cbd1211af8a3cd7b57fffc2aad
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1924	croom.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1820	netsh.exe

Loads dropped DLL 1 IoCs

pid	Process
1776	97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\f26884cbd1211af8a3cd7b57fffc2aad = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\croom.exe\" .."	croom.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\f26884cbd1211af8a3cd7b57fffc2aad = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\croom.exe\" .."	croom.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe
1924	croom.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	croom.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1776 wrote to memory of 1924	1776	97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1.exe	28
PID 1776 wrote to memory of 1924	1776	97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1.exe	28
PID 1776 wrote to memory of 1924	1776	97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1.exe	28
PID 1776 wrote to memory of 1924	1776	97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1.exe	28
PID 1924 wrote to memory of 1820	1924	croom.exe	29
PID 1924 wrote to memory of 1820	1924	croom.exe	29
PID 1924 wrote to memory of 1820	1924	croom.exe	29
PID 1924 wrote to memory of 1820	1924	croom.exe	29

C:\Users\Admin\AppData\Local\Temp\97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1.exe
"C:\Users\Admin\AppData\Local\Temp\97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Users\Admin\AppData\Local\Temp\croom.exe
  "C:\Users\Admin\AppData\Local\Temp\croom.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1924
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\croom.exe" "croom.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1820

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\croom.exe

Filesize
29KB

MD5
e60917239623e9b7b6e0f5b879c88ff0

SHA1
71a3c06515241b14227ca3a0131134da1c4dc747

SHA256
97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1

SHA512
446ce1d1e69f7cfb15505aa5dceba3d8a099cade946935f05cd507080bc41e325e27963267f7c3f0a22821e6b2121df914ad058c55549a0de1ae8c4c8d36ae83

Download Submit
C:\Users\Admin\AppData\Local\Temp\croom.exe

Filesize
29KB

MD5
e60917239623e9b7b6e0f5b879c88ff0

SHA1
71a3c06515241b14227ca3a0131134da1c4dc747

SHA256
97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1

SHA512
446ce1d1e69f7cfb15505aa5dceba3d8a099cade946935f05cd507080bc41e325e27963267f7c3f0a22821e6b2121df914ad058c55549a0de1ae8c4c8d36ae83

Download Submit
\Users\Admin\AppData\Local\Temp\croom.exe

Filesize
29KB

MD5
e60917239623e9b7b6e0f5b879c88ff0

SHA1
71a3c06515241b14227ca3a0131134da1c4dc747

SHA256
97d710673f7ede7e94bfd78383f76dc13db96b7f0997bf267a4ca40a9edaf6c1

SHA512
446ce1d1e69f7cfb15505aa5dceba3d8a099cade946935f05cd507080bc41e325e27963267f7c3f0a22821e6b2121df914ad058c55549a0de1ae8c4c8d36ae83

Download Submit
memory/1776-54-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

Filesize
8KB

Download
memory/1776-60-0x0000000073EB0000-0x000000007445B000-memory.dmp

Filesize
5.7MB

Download
memory/1924-62-0x0000000073EB0000-0x000000007445B000-memory.dmp

Filesize
5.7MB

Download
memory/1924-64-0x0000000073EB0000-0x000000007445B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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