njrat | b81766c2273db2979fc060aa926a13b6b560ad446612088371464a606c80fae4

General

Target

064827f373f0bb93f4616642146a91fc.exe
Size

25KB
MD5

064827f373f0bb93f4616642146a91fc
SHA1

99202be7f698c30dbf0c9d4af3efefd7bc0cec4f
SHA256

b81766c2273db2979fc060aa926a13b6b560ad446612088371464a606c80fae4
SHA512

e75cbd54a310e882bed97052046e784b14e161232a368042a0f37df39579725f9497428aad55714aafdb8452a643ac3e2b9ca6c8b0e793e5949ad2c752179bf4
SSDEEP

768:yaVnrEeAvRH+DHOoVeiInaZxekZ9pjOOdPD9:LRExV9oVKUrntJ

Score

10^/10

njrat aaa evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

aaa

C2

127.0.0.1:5552

192.168.100.4:5552

Mutex

bdae7bc82fc5afd8ef934e53747b3bda

Attributes

reg_key
bdae7bc82fc5afd8ef934e53747b3bda
splitter
|'|'|

Signatures

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

Windows Service
T1543.003

Processes:

netsh.exe

pid process

2840 netsh.exe

pid	process
2840	netsh.exe

Drops startup file 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bdae7bc82fc5afd8ef934e53747b3bda.exe	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bdae7bc82fc5afd8ef934e53747b3bda.exe	svchost.exe

Executes dropped EXE 2 IoCs

Processes:

Server.exesvchost.exe

pid process

2508 Server.exe
2808 svchost.exe
Loads dropped DLL 1 IoCs

Processes:

Server.exe

pid process

2508 Server.exe

pid	process
2508	Server.exe
2808	svchost.exe

pid	process
2508	Server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Windows\CurrentVersion\Run\bdae7bc82fc5afd8ef934e53747b3bda = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\" .."	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\bdae7bc82fc5afd8ef934e53747b3bda = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\" .."	svchost.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

svchost.exe

description	pid	process
Token: SeDebugPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe
Token: 33	2808	svchost.exe
Token: SeIncBasePriorityPrivilege	2808	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

064827f373f0bb93f4616642146a91fc.exeServer.exesvchost.exe

description	pid	process	target process
PID 3040 wrote to memory of 2508	3040	064827f373f0bb93f4616642146a91fc.exe	Server.exe
PID 3040 wrote to memory of 2508	3040	064827f373f0bb93f4616642146a91fc.exe	Server.exe
PID 3040 wrote to memory of 2508	3040	064827f373f0bb93f4616642146a91fc.exe	Server.exe
PID 3040 wrote to memory of 2508	3040	064827f373f0bb93f4616642146a91fc.exe	Server.exe
PID 2508 wrote to memory of 2808	2508	Server.exe	svchost.exe
PID 2508 wrote to memory of 2808	2508	Server.exe	svchost.exe
PID 2508 wrote to memory of 2808	2508	Server.exe	svchost.exe
PID 2508 wrote to memory of 2808	2508	Server.exe	svchost.exe
PID 2808 wrote to memory of 2840	2808	svchost.exe	netsh.exe
PID 2808 wrote to memory of 2840	2808	svchost.exe	netsh.exe
PID 2808 wrote to memory of 2840	2808	svchost.exe	netsh.exe
PID 2808 wrote to memory of 2840	2808	svchost.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\064827f373f0bb93f4616642146a91fc.exe
"C:\Users\Admin\AppData\Local\Temp\064827f373f0bb93f4616642146a91fc.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3040

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2508

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2808

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svchost.exe" "svchost.exe" ENABLE
4⤵
- Modifies Windows Firewall
PID:2840

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Server.exe
Filesize
37KB

MD5
25e1a437f519c6fae7d58c979850b235

SHA1
bf7b2905fd7fb26e6670a9d21585344392513e4f

SHA256
ba98637b354d445da2d87a5b150dadf38fae99e2732268c7b72ff62d563e6bef

SHA512
ffb9c4d4f48893e971994e80360c96f218c5de8f29edf162239f15dffe642032544e09a5adf89d68ecd81630ce8f0bf253144fcaf14cf0d3fa6274dd85365ed2

Download Submit
memory/2508-13-0x00000000021A0000-0x00000000021E0000-memory.dmp

Filesize
256KB

Download
memory/2508-11-0x0000000073F90000-0x000000007453B000-memory.dmp

Filesize
5.7MB

Download
memory/2508-12-0x0000000073F90000-0x000000007453B000-memory.dmp

Filesize
5.7MB

Download
memory/2508-22-0x0000000073F90000-0x000000007453B000-memory.dmp

Filesize
5.7MB

Download
memory/2808-21-0x0000000073F90000-0x000000007453B000-memory.dmp

Filesize
5.7MB

Download
memory/2808-23-0x0000000000C80000-0x0000000000CC0000-memory.dmp

Filesize
256KB

Download
memory/2808-24-0x0000000073F90000-0x000000007453B000-memory.dmp

Filesize
5.7MB

Download
memory/2808-26-0x0000000073F90000-0x000000007453B000-memory.dmp

Filesize
5.7MB

Download
memory/2808-27-0x0000000000C80000-0x0000000000CC0000-memory.dmp

Filesize
256KB

Download
memory/3040-2-0x000000001B220000-0x000000001B2A0000-memory.dmp

Filesize
512KB

Download
memory/3040-1-0x000007FEF54A0000-0x000007FEF5E8C000-memory.dmp

Filesize
9.9MB

Download
memory/3040-10-0x000007FEF54A0000-0x000007FEF5E8C000-memory.dmp

Filesize
9.9MB

Download
memory/3040-0-0x0000000000170000-0x000000000017C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads