njrat | 6c11b5f1e85a276e82e0fcf65049fbd52406173aaec631cd8996f1fac18a0c36

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14-05-2024 13:39

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General

Target

Loki 1.8/Builder_Lifetime.exe
Size

367KB
MD5

5e85824cf5ae53b0e46afaacb011732b
SHA1

baa3b6b8bdd489cc4121688bbbafdffdce0da4f1
SHA256

f0e0aaaee50fa1bceb57e92777fbb8696514ea99a755214d2b49255d3f7538ed
SHA512

f55bbc8a4ecbedb8ebce746ad3d49de7703ce707f627e2ceba349d5f4414cc160be59be75d3a345109e9bf93c0ce1859eb5d21c010c5b7236d163500dd58ea9e
SSDEEP

6144:OeQybLGW2q0GZekNrSrSD9RBDbPkeVX6TuWkob3vHBRZ8wa7:mybLGDy3JBzDJXHWkoD/Zh2

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2676 netsh.exe

pid	process
2676	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:

Builder_Lifetime.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	Builder_Lifetime.exe

Drops startup file 2 IoCs

Processes:

taskhost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4e4f054a9ec63f4d4790905ee7f9cf03.exe	taskhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4e4f054a9ec63f4d4790905ee7f9cf03.exe	taskhost.exe

Executes dropped EXE 1 IoCs

Processes:

taskhost.exe

pid process

4724 taskhost.exe

pid	process
4724	taskhost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

taskhost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4e4f054a9ec63f4d4790905ee7f9cf03 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\taskhost.exe\" .."	taskhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4e4f054a9ec63f4d4790905ee7f9cf03 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\taskhost.exe\" .."	taskhost.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 34 IoCs

Processes:

Builder_Lifetime.exetaskhost.exe

description	pid	process
Token: SeDebugPrivilege	3564	Builder_Lifetime.exe
Token: SeDebugPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe
Token: 33	4724	taskhost.exe
Token: SeIncBasePriorityPrivilege	4724	taskhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Builder_Lifetime.exetaskhost.exe

description	pid	process	target process
PID 3564 wrote to memory of 4724	3564	Builder_Lifetime.exe	taskhost.exe
PID 3564 wrote to memory of 4724	3564	Builder_Lifetime.exe	taskhost.exe
PID 3564 wrote to memory of 4724	3564	Builder_Lifetime.exe	taskhost.exe
PID 4724 wrote to memory of 2676	4724	taskhost.exe	netsh.exe
PID 4724 wrote to memory of 2676	4724	taskhost.exe	netsh.exe
PID 4724 wrote to memory of 2676	4724	taskhost.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\Loki 1.8\Builder_Lifetime.exe
"C:\Users\Admin\AppData\Local\Temp\Loki 1.8\Builder_Lifetime.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3564

C:\Users\Admin\AppData\Local\Temp\taskhost.exe
"C:\Users\Admin\AppData\Local\Temp\taskhost.exe"
2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4724

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\taskhost.exe" "taskhost.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:2676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\taskhost.exe
Filesize
367KB

MD5
5e85824cf5ae53b0e46afaacb011732b

SHA1
baa3b6b8bdd489cc4121688bbbafdffdce0da4f1

SHA256
f0e0aaaee50fa1bceb57e92777fbb8696514ea99a755214d2b49255d3f7538ed

SHA512
f55bbc8a4ecbedb8ebce746ad3d49de7703ce707f627e2ceba349d5f4414cc160be59be75d3a345109e9bf93c0ce1859eb5d21c010c5b7236d163500dd58ea9e

Download Submit
memory/3564-0-0x00000000750F2000-0x00000000750F3000-memory.dmp

Filesize
4KB

Download
memory/3564-1-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/3564-2-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/3564-16-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/4724-15-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/4724-17-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/4724-18-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/4724-20-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download