njrat | 01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7

General

Target

01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe
Size

23KB
MD5

6e349712611b6af9755a5621437c36f1
SHA1

77080fa8a1bbf71fb43ab843c8cb4aa9dcea098a
SHA256

01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7
SHA512

b2771778cae7d621858c4b4f4f1541f5b72f3beb5b882b8b5b6eaf128a50d6365c12b0dbb4e16fbb640801b8dc06f1ceaf4effcc304139aa3331cef30eb728db
SSDEEP

384:Hx1MKFYuEEhERvoBG16Xuy0MHNw6Tg1Y+75JTFmRvR6JZlbw8hqIusZzZsMU:Hx+W4V6+yDRpcnu2U

Score

10^/10

njrat hk evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HK

C2

nicedayforyou.ddns.net:3936

Mutex

307e0729fd0c480ae867c3b39132f6b3

Attributes

reg_key
307e0729fd0c480ae867c3b39132f6b3
splitter
|'|'|

Signatures

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

Processes:

iexplorer.exe

pid process

1028 iexplorer.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4692 netsh.exe

pid	process
1028	iexplorer.exe

pid	process
4692	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:

01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplorer.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\307e0729fd0c480ae867c3b39132f6b3 = "\"C:\\Windows\\iexplorer.exe\" .."	iexplorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\307e0729fd0c480ae867c3b39132f6b3 = "\"C:\\Windows\\iexplorer.exe\" .."	iexplorer.exe

Drops file in Windows directory 1 IoCs

Processes:

01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe

description ioc process

File created C:\Windows\iexplorer.exe 01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File created	C:\Windows\iexplorer.exe	01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe

Suspicious use of AdjustPrivilegeToken 29 IoCs

Processes:

iexplorer.exe

description	pid	process
Token: SeDebugPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe
Token: 33	1028	iexplorer.exe
Token: SeIncBasePriorityPrivilege	1028	iexplorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exeiexplorer.exe

description	pid	process	target process
PID 3028 wrote to memory of 1028	3028	01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe	iexplorer.exe
PID 3028 wrote to memory of 1028	3028	01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe	iexplorer.exe
PID 3028 wrote to memory of 1028	3028	01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe	iexplorer.exe
PID 1028 wrote to memory of 4692	1028	iexplorer.exe	netsh.exe
PID 1028 wrote to memory of 4692	1028	iexplorer.exe	netsh.exe
PID 1028 wrote to memory of 4692	1028	iexplorer.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe
"C:\Users\Admin\AppData\Local\Temp\01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3028

C:\Windows\iexplorer.exe
"C:\Windows\iexplorer.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1028

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Windows\iexplorer.exe" "iexplorer.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:4692

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

Replay Monitor

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Downloads

C:\Windows\iexplorer.exe
Filesize
23KB

MD5
6e349712611b6af9755a5621437c36f1

SHA1
77080fa8a1bbf71fb43ab843c8cb4aa9dcea098a

SHA256
01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7

SHA512
b2771778cae7d621858c4b4f4f1541f5b72f3beb5b882b8b5b6eaf128a50d6365c12b0dbb4e16fbb640801b8dc06f1ceaf4effcc304139aa3331cef30eb728db

Download Submit
C:\Windows\iexplorer.exe
Filesize
23KB

MD5
6e349712611b6af9755a5621437c36f1

SHA1
77080fa8a1bbf71fb43ab843c8cb4aa9dcea098a

SHA256
01ca4a511d01a6d2da296bcd886b5a7f12548eafafb3b7ee5c82f91b661bdae7

SHA512
b2771778cae7d621858c4b4f4f1541f5b72f3beb5b882b8b5b6eaf128a50d6365c12b0dbb4e16fbb640801b8dc06f1ceaf4effcc304139aa3331cef30eb728db

Download Submit
memory/1028-134-0x0000000000000000-mapping.dmp

Download
memory/1028-138-0x0000000074E30000-0x00000000753E1000-memory.dmp

Filesize
5.7MB

Download
memory/1028-140-0x0000000074E30000-0x00000000753E1000-memory.dmp

Filesize
5.7MB

Download
memory/3028-132-0x0000000074E30000-0x00000000753E1000-memory.dmp

Filesize
5.7MB

Download
memory/3028-133-0x0000000074E30000-0x00000000753E1000-memory.dmp

Filesize
5.7MB

Download
memory/3028-137-0x0000000074E30000-0x00000000753E1000-memory.dmp

Filesize
5.7MB

Download
memory/4692-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads