njrat | 7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e

General

Target

7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e.exe
Size

150KB
MD5

61a3e0eb6a7223a1efc176204a0b9590
SHA1

acbb10fe3b27146bbb6098cc6332f2d6f487c485
SHA256

7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e
SHA512

9b82a609625bd608d9aa226d12bbd0dffd04be1f392d67a6b87ebb3d76e445ee911ac8d35c702abf5a5610edb58878a4b4e4811969f0b0907bd4b29d1aca211e
SSDEEP

3072:JwLhY6pJZF4hz5UeR2djsZCgcxXJjX6wAfonA5B5zwEjoh8s:JMYcteR25RDjX6G20f

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

Processes:

server.exe

pid process

4080 server.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

2448 netsh.exe

pid	process
4080	server.exe

pid	process
2448	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:

7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e.exe

Drops startup file 2 IoCs

Processes:

server.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c1d096768422c2046b26ba3578e04398.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c1d096768422c2046b26ba3578e04398.exe	server.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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c1d096768422c2046b26ba3578e04398 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c1d096768422c2046b26ba3578e04398 = "\"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 31 IoCs

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe
Token: 33	4080	server.exe
Token: SeIncBasePriorityPrivilege	4080	server.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e.exeserver.exe

description	pid	process	target process
PID 4176 wrote to memory of 4080	4176	7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e.exe	server.exe
PID 4176 wrote to memory of 4080	4176	7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e.exe	server.exe
PID 4080 wrote to memory of 2448	4080	server.exe	netsh.exe
PID 4080 wrote to memory of 2448	4080	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e.exe
"C:\Users\Admin\AppData\Local\Temp\7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4176

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4080

C:\Windows\SYSTEM32\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:2448

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\server.exe
Filesize
150KB

MD5
61a3e0eb6a7223a1efc176204a0b9590

SHA1
acbb10fe3b27146bbb6098cc6332f2d6f487c485

SHA256
7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e

SHA512
9b82a609625bd608d9aa226d12bbd0dffd04be1f392d67a6b87ebb3d76e445ee911ac8d35c702abf5a5610edb58878a4b4e4811969f0b0907bd4b29d1aca211e

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe
Filesize
150KB

MD5
61a3e0eb6a7223a1efc176204a0b9590

SHA1
acbb10fe3b27146bbb6098cc6332f2d6f487c485

SHA256
7c33f0d59d53070824a3ce5839e6c64271599de87270139bbeab275b8f753f0e

SHA512
9b82a609625bd608d9aa226d12bbd0dffd04be1f392d67a6b87ebb3d76e445ee911ac8d35c702abf5a5610edb58878a4b4e4811969f0b0907bd4b29d1aca211e

Download Submit
memory/2448-140-0x0000000000000000-mapping.dmp

Download
memory/4080-135-0x0000000000000000-mapping.dmp

Download
memory/4080-139-0x00007FFA94040000-0x00007FFA94B01000-memory.dmp

Filesize
10.8MB

Download
memory/4080-141-0x00007FFA94040000-0x00007FFA94B01000-memory.dmp

Filesize
10.8MB

Download
memory/4176-132-0x0000000000220000-0x000000000024A000-memory.dmp

Filesize
168KB

Download
memory/4176-133-0x00007FFA94040000-0x00007FFA94B01000-memory.dmp

Filesize
10.8MB

Download
memory/4176-134-0x00007FFA94040000-0x00007FFA94B01000-memory.dmp

Filesize
10.8MB

Download
memory/4176-138-0x00007FFA94040000-0x00007FFA94B01000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads