njrat | ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d

General

Target

ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d.exe
Size

23KB
MD5

5ff84d0c70279992ca362d19526ad195
SHA1

3ab0eaaa73d68e15e3f1ca97050f117a27f9bcbc
SHA256

ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d
SHA512

81a216074323c6c5453f72a2c2a3dc9cfa514261d2ba881b4dfdd10b1c529e8f7e339f139dfe7c2ddfd5380a5392ecf3497bb2136dd22e5523322e91921b338c
SSDEEP

384:F8aLWS0dABLYVq6RxP8MDFF09vK563gRMmJKUv0mRvR6JZlbw8hqIusZzZ8kB:WXcwt3tRpcnuJg

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

127.0.0.1:5552

Mutex

279f6960ed84a752570aca7fb2dc1552

Attributes

reg_key
279f6960ed84a752570aca7fb2dc1552
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Executes dropped EXE 1 IoCs

pid	Process
1296	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4224	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\279f6960ed84a752570aca7fb2dc1552 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\279f6960ed84a752570aca7fb2dc1552 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.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

description	pid	Process
Token: SeDebugPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe
Token: 33	1296	server.exe
Token: SeIncBasePriorityPrivilege	1296	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 1296	2012	ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d.exe	84
PID 2012 wrote to memory of 1296	2012	ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d.exe	84
PID 2012 wrote to memory of 1296	2012	ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d.exe	84
PID 1296 wrote to memory of 4224	1296	server.exe	88
PID 1296 wrote to memory of 4224	1296	server.exe	88
PID 1296 wrote to memory of 4224	1296	server.exe	88

C:\Users\Admin\AppData\Local\Temp\ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d.exe
"C:\Users\Admin\AppData\Local\Temp\ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1296
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4224

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
23KB

MD5
5ff84d0c70279992ca362d19526ad195

SHA1
3ab0eaaa73d68e15e3f1ca97050f117a27f9bcbc

SHA256
ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d

SHA512
81a216074323c6c5453f72a2c2a3dc9cfa514261d2ba881b4dfdd10b1c529e8f7e339f139dfe7c2ddfd5380a5392ecf3497bb2136dd22e5523322e91921b338c

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
23KB

MD5
5ff84d0c70279992ca362d19526ad195

SHA1
3ab0eaaa73d68e15e3f1ca97050f117a27f9bcbc

SHA256
ec97891dc8ec0b95e004b1397a7360b7bdde2699a9369409bc10e2939b9df56d

SHA512
81a216074323c6c5453f72a2c2a3dc9cfa514261d2ba881b4dfdd10b1c529e8f7e339f139dfe7c2ddfd5380a5392ecf3497bb2136dd22e5523322e91921b338c

Download Submit
memory/1296-137-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/1296-139-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/2012-132-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/2012-136-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download

Analysis

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