njrat | 6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03-10-2022 01:08

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General

Target

6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe
Size

160KB
MD5

5ddb5e008e91c6332831033d3b01e760
SHA1

5f8698a46df82a3a16ef23cb2ccb3f7940a40435
SHA256

6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888
SHA512

c08f4d859eec49df340cc9b97091e5f713f590d169c2b1eef728c77b971fd816a011753bf0de700155f52a16cea3ff29cb78bf609c77381a7bd7138f232f055f
SSDEEP

3072:U/eylEPKs1aNiEXG6K9f+SCDbplnYzo+kOv3RmJM9F:VJ1ynIG3zYzoOPRm

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
4884	windows.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1456	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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fe0342443905fb6b61c6bf8108a1380c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\windows.exe\" .."	windows.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fe0342443905fb6b61c6bf8108a1380c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\windows.exe\" .."	windows.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly\Desktop.ini	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe
File opened for modification	C:\Windows\assembly	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe
File created	C:\Windows\assembly\Desktop.ini	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.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 38 IoCs

description	pid	Process
Token: SeDebugPrivilege	1500	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe
Token: 33	1500	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe
Token: SeIncBasePriorityPrivilege	1500	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe
Token: SeDebugPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe
Token: 33	4884	windows.exe
Token: SeIncBasePriorityPrivilege	4884	windows.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1500 wrote to memory of 4884	1500	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe	86
PID 1500 wrote to memory of 4884	1500	6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe	86
PID 4884 wrote to memory of 1456	4884	windows.exe	89
PID 4884 wrote to memory of 1456	4884	windows.exe	89

C:\Users\Admin\AppData\Local\Temp\6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe
"C:\Users\Admin\AppData\Local\Temp\6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1500
- C:\Users\Admin\AppData\Local\Temp\windows.exe
  "C:\Users\Admin\AppData\Local\Temp\windows.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4884
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\windows.exe" "windows.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1456

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

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\windows.exe

Filesize
160KB

MD5
5ddb5e008e91c6332831033d3b01e760

SHA1
5f8698a46df82a3a16ef23cb2ccb3f7940a40435

SHA256
6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888

SHA512
c08f4d859eec49df340cc9b97091e5f713f590d169c2b1eef728c77b971fd816a011753bf0de700155f52a16cea3ff29cb78bf609c77381a7bd7138f232f055f

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

Filesize
160KB

MD5
5ddb5e008e91c6332831033d3b01e760

SHA1
5f8698a46df82a3a16ef23cb2ccb3f7940a40435

SHA256
6c106b136a649b3df68160d2351d23b459842c212f735c6a163cef14f0306888

SHA512
c08f4d859eec49df340cc9b97091e5f713f590d169c2b1eef728c77b971fd816a011753bf0de700155f52a16cea3ff29cb78bf609c77381a7bd7138f232f055f

Download Submit
memory/1456-137-0x0000000000000000-mapping.dmp

Download
memory/1500-132-0x00007FFAAD3D0000-0x00007FFAADE06000-memory.dmp

Filesize
10.2MB

Download
memory/4884-133-0x0000000000000000-mapping.dmp

Download
memory/4884-136-0x00007FFAAD3D0000-0x00007FFAADE06000-memory.dmp

Filesize
10.2MB

Download