njrat | f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb

General

Target

f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe
Size

23KB
MD5

68ece29504c74f8c02b92fbd571e7e30
SHA1

708a03ba6e6f45c4bd78cb919914b1bf2484f950
SHA256

f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb
SHA512

0b43bc2fd13ecc27801df2a5f462409a3c7753fa29b571cb4c48fd475587636d56546a5b69d0626a0c4e51a4fd893509d311927a5950eccba90e51ade55dffe7
SSDEEP

384:UMqYmCsg/yJrQ7hucGSl7UJ/4g6JgfCcosjddmRvR6JZlbw8hqIusZzZ2U:UErG0Btl7xRpcnuE

Score

10^/10

njrat hacker evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

hacker

C2

127.0.0.1:5552

Mutex

d68b61967d730acfe0a71857bf39dadc

Attributes

reg_key
d68b61967d730acfe0a71857bf39dadc
splitter
|'|'|

Signatures

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

Processes:

system.exe

pid process

4876 system.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4840 netsh.exe

pid	process
4876	system.exe

pid	process
4840	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

Processes:

f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.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\d68b61967d730acfe0a71857bf39dadc.exe	system.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d68b61967d730acfe0a71857bf39dadc.exe	system.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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d68b61967d730acfe0a71857bf39dadc = "\"C:\\Users\\Admin\\AppData\\Roaming\\system.exe\" .."	system.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\d68b61967d730acfe0a71857bf39dadc = "\"C:\\Users\\Admin\\AppData\\Roaming\\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 33 IoCs

Processes:

system.exe

description	pid	process
Token: SeDebugPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe
Token: 33	4876	system.exe
Token: SeIncBasePriorityPrivilege	4876	system.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exesystem.exe

description	pid	process	target process
PID 4224 wrote to memory of 4876	4224	f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe	system.exe
PID 4224 wrote to memory of 4876	4224	f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe	system.exe
PID 4224 wrote to memory of 4876	4224	f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe	system.exe
PID 4876 wrote to memory of 4840	4876	system.exe	netsh.exe
PID 4876 wrote to memory of 4840	4876	system.exe	netsh.exe
PID 4876 wrote to memory of 4840	4876	system.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe
"C:\Users\Admin\AppData\Local\Temp\f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4224

C:\Users\Admin\AppData\Roaming\system.exe
"C:\Users\Admin\AppData\Roaming\system.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4876

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\system.exe" "system.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:4840

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\system.exe
Filesize
23KB

MD5
68ece29504c74f8c02b92fbd571e7e30

SHA1
708a03ba6e6f45c4bd78cb919914b1bf2484f950

SHA256
f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb

SHA512
0b43bc2fd13ecc27801df2a5f462409a3c7753fa29b571cb4c48fd475587636d56546a5b69d0626a0c4e51a4fd893509d311927a5950eccba90e51ade55dffe7

Download Submit
C:\Users\Admin\AppData\Roaming\system.exe
Filesize
23KB

MD5
68ece29504c74f8c02b92fbd571e7e30

SHA1
708a03ba6e6f45c4bd78cb919914b1bf2484f950

SHA256
f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb

SHA512
0b43bc2fd13ecc27801df2a5f462409a3c7753fa29b571cb4c48fd475587636d56546a5b69d0626a0c4e51a4fd893509d311927a5950eccba90e51ade55dffe7

Download Submit
memory/4224-132-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/4224-136-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/4840-138-0x0000000000000000-mapping.dmp

Download
memory/4876-133-0x0000000000000000-mapping.dmp

Download
memory/4876-137-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download
memory/4876-139-0x0000000075300000-0x00000000758B1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads