njrat | 83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b

General

Target

83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b.exe
Size

23KB
MD5

0d1a2512e2d4748552edd88b24f8ad9d
SHA1

805feefe63fda183db04da4f5840f32f0284974f
SHA256

83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b
SHA512

812291c604e5ad519c82db65496a0ab202467012283017df6acd725ea193bbd7b3f318c5d889623ab6eaef7086eb2daee2f5b8665428cde4606db59bfe601905
SSDEEP

384:l8aLWS0dABLYVq6RxP8MDFF09vK56BgRMmJKUv0mRvR6JZlbw8hqIusZzZ8kJ:2Xcwt3vRpcnuJE

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
4716	server.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
3596	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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b.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-1-5-21-2629973501-4017243118-3254762364-1000\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 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe
Token: 33	4716	server.exe
Token: SeIncBasePriorityPrivilege	4716	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5068 wrote to memory of 4716	5068	83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b.exe	82
PID 5068 wrote to memory of 4716	5068	83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b.exe	82
PID 5068 wrote to memory of 4716	5068	83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b.exe	82
PID 4716 wrote to memory of 3596	4716	server.exe	83
PID 4716 wrote to memory of 3596	4716	server.exe	83
PID 4716 wrote to memory of 3596	4716	server.exe	83

C:\Users\Admin\AppData\Local\Temp\83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b.exe
"C:\Users\Admin\AppData\Local\Temp\83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5068
- 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:4716
- - 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:3596

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
0d1a2512e2d4748552edd88b24f8ad9d

SHA1
805feefe63fda183db04da4f5840f32f0284974f

SHA256
83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b

SHA512
812291c604e5ad519c82db65496a0ab202467012283017df6acd725ea193bbd7b3f318c5d889623ab6eaef7086eb2daee2f5b8665428cde4606db59bfe601905

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

Filesize
23KB

MD5
0d1a2512e2d4748552edd88b24f8ad9d

SHA1
805feefe63fda183db04da4f5840f32f0284974f

SHA256
83b3bef444007785d358c8ff339be69965a47cbc4e34f385cd5aa2f62b4e603b

SHA512
812291c604e5ad519c82db65496a0ab202467012283017df6acd725ea193bbd7b3f318c5d889623ab6eaef7086eb2daee2f5b8665428cde4606db59bfe601905

Download Submit
memory/4716-138-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/4716-140-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/5068-132-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/5068-133-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download
memory/5068-137-0x0000000074CA0000-0x0000000075251000-memory.dmp

Filesize
5.7MB

Download

Analysis

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