njrat | 4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7

General

Target

4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7.exe
Size

29KB
MD5

d06838731d941cb6345ec574ff669a9a
SHA1

06d5b57cf6669adf9196bdae4f106e79d8c23207
SHA256

4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7
SHA512

013c8275ce9581f051eeb9901ac073ea1817f5ffab87ea2a2a93e2574d566e501d28a8883abb382679cdd6f83759c5df48007d131a3173dce6a0f0444ed4cebb
SSDEEP

384:mYs5l7VL9skVQ42BkSv5dAsCGmqDm+jeI7GBsbh0w4wlAokw9OhgOL1vYRGOZzj2:a7/skCXkQossqtje3BKh0p29SgR1g

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
760	croom.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1632	netsh.exe

Loads dropped DLL 1 IoCs

pid	Process
1732	4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\f26884cbd1211af8a3cd7b57fffc2aad = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\croom.exe\" .."	croom.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\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 18 IoCs

pid	Process
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe
760	croom.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	760	croom.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 760	1732	4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7.exe	27
PID 1732 wrote to memory of 760	1732	4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7.exe	27
PID 1732 wrote to memory of 760	1732	4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7.exe	27
PID 1732 wrote to memory of 760	1732	4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7.exe	27
PID 760 wrote to memory of 1632	760	croom.exe	28
PID 760 wrote to memory of 1632	760	croom.exe	28
PID 760 wrote to memory of 1632	760	croom.exe	28
PID 760 wrote to memory of 1632	760	croom.exe	28

C:\Users\Admin\AppData\Local\Temp\4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7.exe
"C:\Users\Admin\AppData\Local\Temp\4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1732
- 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:760
- - 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:1632

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
d06838731d941cb6345ec574ff669a9a

SHA1
06d5b57cf6669adf9196bdae4f106e79d8c23207

SHA256
4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7

SHA512
013c8275ce9581f051eeb9901ac073ea1817f5ffab87ea2a2a93e2574d566e501d28a8883abb382679cdd6f83759c5df48007d131a3173dce6a0f0444ed4cebb

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

Filesize
29KB

MD5
d06838731d941cb6345ec574ff669a9a

SHA1
06d5b57cf6669adf9196bdae4f106e79d8c23207

SHA256
4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7

SHA512
013c8275ce9581f051eeb9901ac073ea1817f5ffab87ea2a2a93e2574d566e501d28a8883abb382679cdd6f83759c5df48007d131a3173dce6a0f0444ed4cebb

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

Filesize
29KB

MD5
d06838731d941cb6345ec574ff669a9a

SHA1
06d5b57cf6669adf9196bdae4f106e79d8c23207

SHA256
4b3953db788e94a8684de4ade7427e9ff90c479a9031cedb9a699c465259eda7

SHA512
013c8275ce9581f051eeb9901ac073ea1817f5ffab87ea2a2a93e2574d566e501d28a8883abb382679cdd6f83759c5df48007d131a3173dce6a0f0444ed4cebb

Download Submit
memory/760-56-0x0000000000000000-mapping.dmp

Download
memory/760-63-0x0000000074C10000-0x00000000751BB000-memory.dmp

Filesize
5.7MB

Download
memory/760-64-0x0000000074C10000-0x00000000751BB000-memory.dmp

Filesize
5.7MB

Download
memory/1632-60-0x0000000000000000-mapping.dmp

Download
memory/1732-54-0x0000000075711000-0x0000000075713000-memory.dmp

Filesize
8KB

Download
memory/1732-61-0x0000000074C10000-0x00000000751BB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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