njrat | 877968fc395c36225759ca3a735c35ee708a1be05b23b35c8efa8c7b8ef86061

General

Target

29761cea6322ff4d985807bd6367ccd0.exe
Size

37KB
MD5

29761cea6322ff4d985807bd6367ccd0
SHA1

c66cea52ca72cc85344a55f872a1b77fad4e895b
SHA256

877968fc395c36225759ca3a735c35ee708a1be05b23b35c8efa8c7b8ef86061
SHA512

fad86ad9faf1357259386344ac5e7b047c09dd75be017c2bfd907ba6c8c0e2a98a3102881cbba9c71f2c1259e2a72b0146be16137af3618cc675d08d9f31852e

Score

10^/10

njrat bot evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Bot

C2

94.244.28.246:31280

Mutex

88f496bc65b64e4436a26a2698687f66

Attributes

reg_key
88f496bc65b64e4436a26a2698687f66
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 1 IoCs

Processes:

system.exe

pid process

1948 system.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
1948	system.exe

Drops startup file 2 IoCs

Processes:

system.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\88f496bc65b64e4436a26a2698687f66.exe	system.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\88f496bc65b64e4436a26a2698687f66.exe	system.exe

Loads dropped DLL 1 IoCs

Processes:

29761cea6322ff4d985807bd6367ccd0.exe

pid process

1780 29761cea6322ff4d985807bd6367ccd0.exe

pid	process
1780	29761cea6322ff4d985807bd6367ccd0.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

system.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000\Software\Microsoft\Windows\CurrentVersion\Run\88f496bc65b64e4436a26a2698687f66 = "\"C:\\ProgramData\\system.exe\" .."	system.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\88f496bc65b64e4436a26a2698687f66 = "\"C:\\ProgramData\\system.exe\" .."	system.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

system.exe

description	pid	process
Token: SeDebugPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe
Token: 33	1948	system.exe
Token: SeIncBasePriorityPrivilege	1948	system.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

29761cea6322ff4d985807bd6367ccd0.exesystem.exe

description	pid	process	target process
PID 1780 wrote to memory of 1948	1780	29761cea6322ff4d985807bd6367ccd0.exe	system.exe
PID 1780 wrote to memory of 1948	1780	29761cea6322ff4d985807bd6367ccd0.exe	system.exe
PID 1780 wrote to memory of 1948	1780	29761cea6322ff4d985807bd6367ccd0.exe	system.exe
PID 1780 wrote to memory of 1948	1780	29761cea6322ff4d985807bd6367ccd0.exe	system.exe
PID 1948 wrote to memory of 2040	1948	system.exe	netsh.exe
PID 1948 wrote to memory of 2040	1948	system.exe	netsh.exe
PID 1948 wrote to memory of 2040	1948	system.exe	netsh.exe
PID 1948 wrote to memory of 2040	1948	system.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\29761cea6322ff4d985807bd6367ccd0.exe
"C:\Users\Admin\AppData\Local\Temp\29761cea6322ff4d985807bd6367ccd0.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1780

C:\ProgramData\system.exe
"C:\ProgramData\system.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1948

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\ProgramData\system.exe" "system.exe" ENABLE
3⤵
PID:2040

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\system.exe
Filesize
37KB

MD5
29761cea6322ff4d985807bd6367ccd0

SHA1
c66cea52ca72cc85344a55f872a1b77fad4e895b

SHA256
877968fc395c36225759ca3a735c35ee708a1be05b23b35c8efa8c7b8ef86061

SHA512
fad86ad9faf1357259386344ac5e7b047c09dd75be017c2bfd907ba6c8c0e2a98a3102881cbba9c71f2c1259e2a72b0146be16137af3618cc675d08d9f31852e

Download Submit
C:\ProgramData\system.exe
Filesize
37KB

MD5
29761cea6322ff4d985807bd6367ccd0

SHA1
c66cea52ca72cc85344a55f872a1b77fad4e895b

SHA256
877968fc395c36225759ca3a735c35ee708a1be05b23b35c8efa8c7b8ef86061

SHA512
fad86ad9faf1357259386344ac5e7b047c09dd75be017c2bfd907ba6c8c0e2a98a3102881cbba9c71f2c1259e2a72b0146be16137af3618cc675d08d9f31852e

Download Submit
\ProgramData\system.exe
Filesize
37KB

MD5
29761cea6322ff4d985807bd6367ccd0

SHA1
c66cea52ca72cc85344a55f872a1b77fad4e895b

SHA256
877968fc395c36225759ca3a735c35ee708a1be05b23b35c8efa8c7b8ef86061

SHA512
fad86ad9faf1357259386344ac5e7b047c09dd75be017c2bfd907ba6c8c0e2a98a3102881cbba9c71f2c1259e2a72b0146be16137af3618cc675d08d9f31852e

Download Submit
memory/1780-54-0x0000000075BA1000-0x0000000075BA3000-memory.dmp

Filesize
8KB

Download
memory/1780-55-0x00000000745B0000-0x0000000074B5B000-memory.dmp

Filesize
5.7MB

Download
memory/1948-57-0x0000000000000000-mapping.dmp

Download
memory/1948-61-0x00000000745B0000-0x0000000074B5B000-memory.dmp

Filesize
5.7MB

Download
memory/2040-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads