Malware Analysis Report

2025-03-15 06:22

Sample ID 241003-krr7jayare
Target 10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N
SHA256 10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2
Tags
njrat hacked persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2

Threat Level: Known bad

The file 10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N was found to be: Known bad.

Malicious Activity Summary

njrat hacked persistence trojan

njRAT/Bladabindi

Executes dropped EXE

Checks computer location settings

Drops startup file

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

Suspicious behavior: GetForegroundWindowSpam

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-03 08:50

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-03 08:50

Reported

2024-10-03 08:52

Platform

win7-20240903-en

Max time kernel

119s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe"

Signatures

njRAT/Bladabindi

trojan njrat

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .." C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .." C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2312 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe C:\Users\Admin\AppData\Local\Temp\Dllhost.exe
PID 2312 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe C:\Users\Admin\AppData\Local\Temp\Dllhost.exe
PID 2312 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe C:\Users\Admin\AppData\Local\Temp\Dllhost.exe
PID 2296 wrote to memory of 2748 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe C:\Windows\system32\schtasks.exe
PID 2296 wrote to memory of 2748 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe C:\Windows\system32\schtasks.exe
PID 2296 wrote to memory of 2748 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe C:\Windows\system32\schtasks.exe
PID 2568 wrote to memory of 2704 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\Server.exe
PID 2568 wrote to memory of 2704 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\Server.exe
PID 2568 wrote to memory of 2704 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\Server.exe
PID 2568 wrote to memory of 2528 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\Server.exe
PID 2568 wrote to memory of 2528 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\Server.exe
PID 2568 wrote to memory of 2528 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\Server.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe

"C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe"

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

"C:\Users\Admin\AppData\Local\Temp\Dllhost.exe"

C:\Windows\system32\schtasks.exe

schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe

C:\Windows\system32\taskeng.exe

taskeng.exe {DABAC059-FBD6-4EF3-BE3E-5EC45D7D0C89} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]

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

C:\Users\Admin\AppData\Local\Temp/Server.exe

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

C:\Users\Admin\AppData\Local\Temp/Server.exe

Network

Country Destination Domain Proto
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp

Files

memory/2312-0-0x000007FEF5C33000-0x000007FEF5C34000-memory.dmp

memory/2312-1-0x0000000000260000-0x0000000000268000-memory.dmp

memory/2312-2-0x0000000000250000-0x0000000000262000-memory.dmp

memory/2312-3-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp

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

MD5 27dab2cc8ba5c9a4c63e20f0d28fcfe0
SHA1 62b406e7a7c25569b858888e6aec463462235486
SHA256 10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2
SHA512 b1b6c5004c8f4392d79640398e428074648a0dc4f86c00a390e0965e77a63564e154789b182ac03644ba55865391a6c224388d8c4a7e695e5f1d2c6ef0734888

memory/2296-10-0x00000000002C0000-0x00000000002D2000-memory.dmp

memory/2296-9-0x0000000000EF0000-0x0000000000EF8000-memory.dmp

memory/2296-11-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp

memory/2296-12-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp

memory/2312-13-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp

memory/2296-16-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp

memory/2296-17-0x000007FEF5C30000-0x000007FEF661C000-memory.dmp

memory/2704-21-0x0000000000C70000-0x0000000000C78000-memory.dmp

memory/2704-22-0x00000000003C0000-0x00000000003D2000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-03 08:50

Reported

2024-10-03 08:52

Platform

win10v2004-20240802-en

Max time kernel

119s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe"

Signatures

njRAT/Bladabindi

trojan njrat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .." C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .." C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe

"C:\Users\Admin\AppData\Local\Temp\10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2N.exe"

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

"C:\Users\Admin\AppData\Local\Temp\Dllhost.exe"

C:\Windows\SYSTEM32\schtasks.exe

schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe

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

C:\Users\Admin\AppData\Local\Temp/Server.exe

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

C:\Users\Admin\AppData\Local\Temp/Server.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp

Files

memory/1004-0-0x00007FFE45553000-0x00007FFE45555000-memory.dmp

memory/1004-1-0x0000000000030000-0x0000000000038000-memory.dmp

memory/1004-2-0x00000000008E0000-0x00000000008F2000-memory.dmp

memory/1004-3-0x00007FFE45550000-0x00007FFE46011000-memory.dmp

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

MD5 27dab2cc8ba5c9a4c63e20f0d28fcfe0
SHA1 62b406e7a7c25569b858888e6aec463462235486
SHA256 10fe4ae5851e7d5403bdf1918c184c6df7016dad517511a73e946dd9816174a2
SHA512 b1b6c5004c8f4392d79640398e428074648a0dc4f86c00a390e0965e77a63564e154789b182ac03644ba55865391a6c224388d8c4a7e695e5f1d2c6ef0734888

memory/1004-14-0x00007FFE45550000-0x00007FFE46011000-memory.dmp

memory/2768-13-0x00007FFE45550000-0x00007FFE46011000-memory.dmp

memory/2768-15-0x00007FFE45550000-0x00007FFE46011000-memory.dmp

memory/2768-18-0x00007FFE45550000-0x00007FFE46011000-memory.dmp

memory/2768-19-0x00007FFE45550000-0x00007FFE46011000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Server.exe.log

MD5 a8a147915e3a996fdbe10b3a3f1e1bb2
SHA1 abc564c1be468d57e700913e7b6cf8f62d421263
SHA256 8b96a8557deea66696837af011843d6a82451ba57c8f9b5a2726a70818d6fc7e
SHA512 17b42f17ef60a9f625703172763f692e5ed2ca93564a97853dfa72bb0ac6305ef3267aea0b205938e3aa8eac10156d9d4f322b30d0329d92d647bcec6372731c