njrat | a281865e116c45442f921963ea8f931c183776061b9e9dd7328f4a54f4f13b4b

Analysis

max time kernel
152s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
14/01/2023, 02:31

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General

Target

c79b8eaef85540f4e574162e51b4ef98.exe
Size

225KB
MD5

c79b8eaef85540f4e574162e51b4ef98
SHA1

5636caa6dc5dbcdb296e4a6f9f59c7d64e675909
SHA256

a281865e116c45442f921963ea8f931c183776061b9e9dd7328f4a54f4f13b4b
SHA512

2cdec138fe5ee4453ef6019cac4551ec69aaf99b6eb31d7a50182a5ff1af22a14fed9eb858b6a9a9deb2cff502dff344bc6536d47d8be39ee9b40be8db329913
SSDEEP

3072:QF327h+yJvq/xr+VBFaImYIYiheeeeeeeeefYDeOiClppeppOpplppepppDppptf:832QfZrMBgJSOG9iO2RK

Score

10^/10

njrat desktop evasion trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Desktop

6.tcp.eu.ngrok.io:10945

Mutex

a197c9392c3d531e5c503c947b346f93

Attributes

reg_key
a197c9392c3d531e5c503c947b346f93
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2596	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1924	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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	c79b8eaef85540f4e574162e51b4ef98.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

description	pid	Process
Token: SeDebugPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe
Token: 33	2596	server.exe
Token: SeIncBasePriorityPrivilege	2596	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2596	2648	c79b8eaef85540f4e574162e51b4ef98.exe	85
PID 2648 wrote to memory of 2596	2648	c79b8eaef85540f4e574162e51b4ef98.exe	85
PID 2648 wrote to memory of 2596	2648	c79b8eaef85540f4e574162e51b4ef98.exe	85
PID 2596 wrote to memory of 1924	2596	server.exe	88
PID 2596 wrote to memory of 1924	2596	server.exe	88
PID 2596 wrote to memory of 1924	2596	server.exe	88

C:\Users\Admin\AppData\Local\Temp\c79b8eaef85540f4e574162e51b4ef98.exe
"C:\Users\Admin\AppData\Local\Temp\c79b8eaef85540f4e574162e51b4ef98.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2596
- - 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:1924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
225KB

MD5
c79b8eaef85540f4e574162e51b4ef98

SHA1
5636caa6dc5dbcdb296e4a6f9f59c7d64e675909

SHA256
a281865e116c45442f921963ea8f931c183776061b9e9dd7328f4a54f4f13b4b

SHA512
2cdec138fe5ee4453ef6019cac4551ec69aaf99b6eb31d7a50182a5ff1af22a14fed9eb858b6a9a9deb2cff502dff344bc6536d47d8be39ee9b40be8db329913

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

Filesize
225KB

MD5
c79b8eaef85540f4e574162e51b4ef98

SHA1
5636caa6dc5dbcdb296e4a6f9f59c7d64e675909

SHA256
a281865e116c45442f921963ea8f931c183776061b9e9dd7328f4a54f4f13b4b

SHA512
2cdec138fe5ee4453ef6019cac4551ec69aaf99b6eb31d7a50182a5ff1af22a14fed9eb858b6a9a9deb2cff502dff344bc6536d47d8be39ee9b40be8db329913

Download Submit
memory/2596-137-0x0000000075320000-0x00000000758D1000-memory.dmp

Filesize
5.7MB

Download
memory/2596-139-0x0000000075320000-0x00000000758D1000-memory.dmp

Filesize
5.7MB

Download
memory/2648-132-0x0000000075320000-0x00000000758D1000-memory.dmp

Filesize
5.7MB

Download
memory/2648-136-0x0000000075320000-0x00000000758D1000-memory.dmp

Filesize
5.7MB

Download