njrat | a7746acce6168760a25635c553af74bbd6887d2b5e0d7b6bd9b45c8cd1e5b900

General

Target

5124aaebf1ab6da085b27c6c2ba0cc51.exe
Size

23KB
MD5

5124aaebf1ab6da085b27c6c2ba0cc51
SHA1

fbc12d3abe1925183aca35b6576650fc8e70396f
SHA256

a7746acce6168760a25635c553af74bbd6887d2b5e0d7b6bd9b45c8cd1e5b900
SHA512

e741d212439d4f888dd63d619d0f1ae27dfa9784d6a1740bf70d9faef9ac403cc70f174685cce206ff8d8e371c4835912bdca5288744bc4ff74b00a3ad3f5924
SSDEEP

384:p8aZYC9twBNdcvFaly2H0dbJo6HghcASEJqc/ZmRvR6JZlbw8hqIusZzZ35:xY+sNKqNHnSdRpcnuy

Score

10^/10

njrat zzzzz evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

zzzzz

C2

daleriamz.ddns.net:222

Mutex

44b2ba132312d6047acd9b3fee38fa26

Attributes

reg_key
44b2ba132312d6047acd9b3fee38fa26
splitter
|'|'|

Signatures

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

Processes:

server.exe

pid process

4684 server.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4008 netsh.exe

pid	process
4684	server.exe

pid	process
4008	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:

5124aaebf1ab6da085b27c6c2ba0cc51.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	5124aaebf1ab6da085b27c6c2ba0cc51.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\44b2ba132312d6047acd9b3fee38fa26.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\44b2ba132312d6047acd9b3fee38fa26.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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\44b2ba132312d6047acd9b3fee38fa26 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\44b2ba132312d6047acd9b3fee38fa26 = "\"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	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe
Token: 33	4684	server.exe
Token: SeIncBasePriorityPrivilege	4684	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

5124aaebf1ab6da085b27c6c2ba0cc51.exeserver.exe

description	pid	process	target process
PID 4140 wrote to memory of 4684	4140	5124aaebf1ab6da085b27c6c2ba0cc51.exe	server.exe
PID 4140 wrote to memory of 4684	4140	5124aaebf1ab6da085b27c6c2ba0cc51.exe	server.exe
PID 4140 wrote to memory of 4684	4140	5124aaebf1ab6da085b27c6c2ba0cc51.exe	server.exe
PID 4684 wrote to memory of 4008	4684	server.exe	netsh.exe
PID 4684 wrote to memory of 4008	4684	server.exe	netsh.exe
PID 4684 wrote to memory of 4008	4684	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\5124aaebf1ab6da085b27c6c2ba0cc51.exe
"C:\Users\Admin\AppData\Local\Temp\5124aaebf1ab6da085b27c6c2ba0cc51.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4140

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:4684

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:4008

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
23KB

MD5
5124aaebf1ab6da085b27c6c2ba0cc51

SHA1
fbc12d3abe1925183aca35b6576650fc8e70396f

SHA256
a7746acce6168760a25635c553af74bbd6887d2b5e0d7b6bd9b45c8cd1e5b900

SHA512
e741d212439d4f888dd63d619d0f1ae27dfa9784d6a1740bf70d9faef9ac403cc70f174685cce206ff8d8e371c4835912bdca5288744bc4ff74b00a3ad3f5924

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe
Filesize
23KB

MD5
5124aaebf1ab6da085b27c6c2ba0cc51

SHA1
fbc12d3abe1925183aca35b6576650fc8e70396f

SHA256
a7746acce6168760a25635c553af74bbd6887d2b5e0d7b6bd9b45c8cd1e5b900

SHA512
e741d212439d4f888dd63d619d0f1ae27dfa9784d6a1740bf70d9faef9ac403cc70f174685cce206ff8d8e371c4835912bdca5288744bc4ff74b00a3ad3f5924

Download Submit
memory/4008-138-0x0000000000000000-mapping.dmp

Download
memory/4140-132-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4140-136-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4684-133-0x0000000000000000-mapping.dmp

Download
memory/4684-137-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4684-139-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads