njrat | 621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590

General

Target

621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590.exe
Size

23KB
MD5

6b1b40eca7d5f7c4b200cb2db82f5410
SHA1

f6144493a8d498085473da407240ddcb00821027
SHA256

621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590
SHA512

a515f2c24edaa9de592ee986814f28b83fea12c2f9e7da699b14d5d9b3acbfad7b49d7656d4ea0a7fb157c47c483a7001d02190080365c9e9bc0b8da643b6f07
SSDEEP

384:Ec6ze6e1PAhJVzC3tC1im/BsTx46PgZ0rap9HBmRvR6JZlbw8hqIusZzZA3:ge9EJLN/yRpcnu1

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

falkonhacker.ddns.net:1177

Mutex

4990d42069bd953a31ad864ca5c32a85

Attributes

reg_key
4990d42069bd953a31ad864ca5c32a85
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 1 IoCs

Processes:

server.exe

pid process

768 server.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3592 netsh.exe

pid	process
768	server.exe

pid	process
3592	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:

621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

server.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4990d42069bd953a31ad864ca5c32a85 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4990d42069bd953a31ad864ca5c32a85 = "\"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

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe
Token: 33	768	server.exe
Token: SeIncBasePriorityPrivilege	768	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590.exeserver.exe

description	pid	process	target process
PID 4924 wrote to memory of 768	4924	621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590.exe	server.exe
PID 4924 wrote to memory of 768	4924	621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590.exe	server.exe
PID 4924 wrote to memory of 768	4924	621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590.exe	server.exe
PID 768 wrote to memory of 3592	768	server.exe	netsh.exe
PID 768 wrote to memory of 3592	768	server.exe	netsh.exe
PID 768 wrote to memory of 3592	768	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590.exe
"C:\Users\Admin\AppData\Local\Temp\621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4924
- 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:768
- - 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:3592

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

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Downloads

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

Filesize
23KB

MD5
6b1b40eca7d5f7c4b200cb2db82f5410

SHA1
f6144493a8d498085473da407240ddcb00821027

SHA256
621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590

SHA512
a515f2c24edaa9de592ee986814f28b83fea12c2f9e7da699b14d5d9b3acbfad7b49d7656d4ea0a7fb157c47c483a7001d02190080365c9e9bc0b8da643b6f07

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

Filesize
23KB

MD5
6b1b40eca7d5f7c4b200cb2db82f5410

SHA1
f6144493a8d498085473da407240ddcb00821027

SHA256
621dd2ea2c86536491ab62540a990d9c575d4ac11b00319106d86471844d6590

SHA512
a515f2c24edaa9de592ee986814f28b83fea12c2f9e7da699b14d5d9b3acbfad7b49d7656d4ea0a7fb157c47c483a7001d02190080365c9e9bc0b8da643b6f07

Download Submit
memory/768-133-0x0000000000000000-mapping.dmp

Download
memory/768-137-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/768-139-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/3592-138-0x0000000000000000-mapping.dmp

Download
memory/4924-132-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/4924-136-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads