njrat | 72fd107044ae159a7a80813fe902a132f12eedd01c63fd9e506cf05e088e7491

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2022 15:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Backdoor.MSIL.Agent.exe
Size

89KB
MD5

f54eea2b9a7c0259b87a5303a526d818
SHA1

641fcc96b0e288f7c5b1d0b94d6be1be2939e38e
SHA256

72fd107044ae159a7a80813fe902a132f12eedd01c63fd9e506cf05e088e7491
SHA512

36d1fb8553f454b1edbd719d4805e3d120b243960fb82ff640e52e3d3c9710a8761128079f981da011ad931c1117c0d7317f051bd4fd71a5bad93b7862dafde5
SSDEEP

384:W8aZYC9twBNdcvFaly2H0dbJo6HghcASEJqc/ZmRvR6JZlbw8hqIusZzZVPe+8tp:AY+sNKqNHnSdRpcnu+REgTK

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3068 netsh.exe

pid	process
3068	netsh.exe

Drops startup file 2 IoCs

Processes:

Backdoor.MSIL.Agent.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e4c7f2e5b82fac0d624ab661f39b28fa.exe	Backdoor.MSIL.Agent.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e4c7f2e5b82fac0d624ab661f39b28fa.exe	Backdoor.MSIL.Agent.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Backdoor.MSIL.Agent.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e4c7f2e5b82fac0d624ab661f39b28fa = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Backdoor.MSIL.Agent.exe\" .."	Backdoor.MSIL.Agent.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\e4c7f2e5b82fac0d624ab661f39b28fa = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Backdoor.MSIL.Agent.exe\" .."	Backdoor.MSIL.Agent.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

Backdoor.MSIL.Agent.exe

description	pid	process
Token: SeDebugPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe
Token: 33	1800	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1800	Backdoor.MSIL.Agent.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Backdoor.MSIL.Agent.exe

description	pid	process	target process
PID 1800 wrote to memory of 3068	1800	Backdoor.MSIL.Agent.exe	netsh.exe
PID 1800 wrote to memory of 3068	1800	Backdoor.MSIL.Agent.exe	netsh.exe
PID 1800 wrote to memory of 3068	1800	Backdoor.MSIL.Agent.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\Backdoor.MSIL.Agent.exe
"C:\Users\Admin\AppData\Local\Temp\Backdoor.MSIL.Agent.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1800

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Backdoor.MSIL.Agent.exe" "Backdoor.MSIL.Agent.exe" ENABLE
2⤵
- Modifies Windows Firewall
PID:3068

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1800-132-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/1800-134-0x00000000749B0000-0x0000000074F61000-memory.dmp

Filesize
5.7MB

Download
memory/3068-133-0x0000000000000000-mapping.dmp

Download