njrat | 7aa11361505f0ea1e8bf02e1529a5104f8186da3d52f26409281f6d4783bc77f

Resubmissions

14-01-2025 07:12

250114-h1qnys1kcy 10

14-01-2025 06:19

250114-g26acsyrez 10

04-08-2022 21:27

220804-1aqkdacbdq 10

Analysis

max time kernel
151s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220722-en
resource tags

arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
submitted
04-08-2022 21:27

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General

Target

DangerousPayload.exe
Size

37KB
MD5

9bbb2f1dc80afe6ecf27b31794a02d32
SHA1

bac66f84175fe186c478a340c2f31fde5f57d980
SHA256

7aa11361505f0ea1e8bf02e1529a5104f8186da3d52f26409281f6d4783bc77f
SHA512

341ff7add58a74c3aef78340e6c44ae05b8c8b0ba16c0d3d20a668f2923550faee171563bc8541ff0ef956002609bdda4337a484d470fca6528237bc170aac3e

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

susiahat24199a.ddns.net:5552

Mutex

b94fe95343d85bb18dd50d099af4eb73

Attributes

reg_key
b94fe95343d85bb18dd50d099af4eb73
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
3088	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2332	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation	DangerousPayload.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b94fe95343d85bb18dd50d099af4eb73.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b94fe95343d85bb18dd50d099af4eb73.exe	server.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-1-5-21-3463845317-933582289-45817732-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b94fe95343d85bb18dd50d099af4eb73 = "\"C:\\Users\\Admin\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\b94fe95343d85bb18dd50d099af4eb73 = "\"C:\\Users\\Admin\\server.exe\" .."	server.exe

Drops autorun.inf file 1 TTPs 3 IoCs

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

Replication Through Removable Media

T1091

description	ioc	Process
File created	C:\autorun.inf	server.exe
File opened for modification	C:\autorun.inf	server.exe
File created	D:\autorun.inf	server.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1940	taskkill.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe
3088	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3088	server.exe

Suspicious use of AdjustPrivilegeToken 30 IoCs

description	pid	Process
Token: SeDebugPrivilege	3088	server.exe
Token: SeDebugPrivilege	1940	taskkill.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe
Token: 33	3088	server.exe
Token: SeIncBasePriorityPrivilege	3088	server.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2976 wrote to memory of 3088	2976	DangerousPayload.exe	85
PID 2976 wrote to memory of 3088	2976	DangerousPayload.exe	85
PID 2976 wrote to memory of 3088	2976	DangerousPayload.exe	85
PID 3088 wrote to memory of 2332	3088	server.exe	89
PID 3088 wrote to memory of 2332	3088	server.exe	89
PID 3088 wrote to memory of 2332	3088	server.exe	89
PID 3088 wrote to memory of 1940	3088	server.exe	91
PID 3088 wrote to memory of 1940	3088	server.exe	91
PID 3088 wrote to memory of 1940	3088	server.exe	91

C:\Users\Admin\AppData\Local\Temp\DangerousPayload.exe
"C:\Users\Admin\AppData\Local\Temp\DangerousPayload.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Users\Admin\server.exe
  "C:\Users\Admin\server.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Drops autorun.inf file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3088
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2332
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM System32.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1940

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\server.exe

Filesize
37KB

MD5
9bbb2f1dc80afe6ecf27b31794a02d32

SHA1
bac66f84175fe186c478a340c2f31fde5f57d980

SHA256
7aa11361505f0ea1e8bf02e1529a5104f8186da3d52f26409281f6d4783bc77f

SHA512
341ff7add58a74c3aef78340e6c44ae05b8c8b0ba16c0d3d20a668f2923550faee171563bc8541ff0ef956002609bdda4337a484d470fca6528237bc170aac3e

Download Submit
C:\Users\Admin\server.exe

Filesize
37KB

MD5
9bbb2f1dc80afe6ecf27b31794a02d32

SHA1
bac66f84175fe186c478a340c2f31fde5f57d980

SHA256
7aa11361505f0ea1e8bf02e1529a5104f8186da3d52f26409281f6d4783bc77f

SHA512
341ff7add58a74c3aef78340e6c44ae05b8c8b0ba16c0d3d20a668f2923550faee171563bc8541ff0ef956002609bdda4337a484d470fca6528237bc170aac3e

Download Submit
memory/2976-132-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2976-133-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/2976-138-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3088-137-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download
memory/3088-141-0x00000000753A0000-0x0000000075951000-memory.dmp

Filesize
5.7MB

Download