njrat | 20951f60595b2530a803ff011fce82b1055e8555ff4970f79642903215f363fe

General

Target

9697d0ca386be540d9acb955cf074ca3aec0f7248f62c275751e83ac5947645d.exe
Size

32KB
MD5

01285e4a7c3a833728dd600fa8f33d93
SHA1

4636ab9028287ddfe799dc6465d7b2666f6d6f47
SHA256

9697d0ca386be540d9acb955cf074ca3aec0f7248f62c275751e83ac5947645d
SHA512

e86e740378282fc577c7f9a50c7ba70647924f42471f5a016a16cb3395c1777b3f6be04f99995c5ab16dff808dc52f46005869497b98be8e6f3dc85dd15dae0b

Score

10^/10

njrat 좀비 evasion persistence trojan

Malware Config

Extracted

Family

njrat

Botnet

좀비

Mutex

6506cdba2a23ee6c81479f21c5d918fd

Attributes

reg_key
6506cdba2a23ee6c81479f21c5d918fd

Signatures

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

Processes:

CRONOS.exe

pid process

3160 CRONOS.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
3160	CRONOS.exe

Drops startup file 2 IoCs

Processes:

CRONOS.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6506cdba2a23ee6c81479f21c5d918fd.exe	CRONOS.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6506cdba2a23ee6c81479f21c5d918fd.exe	CRONOS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

CRONOS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\6506cdba2a23ee6c81479f21c5d918fd = "\"C:\\Users\\Admin\\AppData\\Roaming\\CRONOS.exe\" .."	CRONOS.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\6506cdba2a23ee6c81479f21c5d918fd = "\"C:\\Users\\Admin\\AppData\\Roaming\\CRONOS.exe\" .."	CRONOS.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:

CRONOS.exe

description	pid	process
Token: SeDebugPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe
Token: 33	3160	CRONOS.exe
Token: SeIncBasePriorityPrivilege	3160	CRONOS.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

9697d0ca386be540d9acb955cf074ca3aec0f7248f62c275751e83ac5947645d.exeCRONOS.exe

description	pid	process	target process
PID 2344 wrote to memory of 3160	2344	9697d0ca386be540d9acb955cf074ca3aec0f7248f62c275751e83ac5947645d.exe	CRONOS.exe
PID 2344 wrote to memory of 3160	2344	9697d0ca386be540d9acb955cf074ca3aec0f7248f62c275751e83ac5947645d.exe	CRONOS.exe
PID 2344 wrote to memory of 3160	2344	9697d0ca386be540d9acb955cf074ca3aec0f7248f62c275751e83ac5947645d.exe	CRONOS.exe
PID 3160 wrote to memory of 504	3160	CRONOS.exe	netsh.exe
PID 3160 wrote to memory of 504	3160	CRONOS.exe	netsh.exe
PID 3160 wrote to memory of 504	3160	CRONOS.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\9697d0ca386be540d9acb955cf074ca3aec0f7248f62c275751e83ac5947645d.exe
"C:\Users\Admin\AppData\Local\Temp\9697d0ca386be540d9acb955cf074ca3aec0f7248f62c275751e83ac5947645d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2344

C:\Users\Admin\AppData\Roaming\CRONOS.exe
"C:\Users\Admin\AppData\Roaming\CRONOS.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3160

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\CRONOS.exe" "CRONOS.exe" ENABLE
3⤵
PID:504

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\CRONOS.exe
MD5
01285e4a7c3a833728dd600fa8f33d93

SHA1
4636ab9028287ddfe799dc6465d7b2666f6d6f47

SHA256
9697d0ca386be540d9acb955cf074ca3aec0f7248f62c275751e83ac5947645d

SHA512
e86e740378282fc577c7f9a50c7ba70647924f42471f5a016a16cb3395c1777b3f6be04f99995c5ab16dff808dc52f46005869497b98be8e6f3dc85dd15dae0b

Download Submit
C:\Users\Admin\AppData\Roaming\CRONOS.exe
MD5
01285e4a7c3a833728dd600fa8f33d93

SHA1
4636ab9028287ddfe799dc6465d7b2666f6d6f47

SHA256
9697d0ca386be540d9acb955cf074ca3aec0f7248f62c275751e83ac5947645d

SHA512
e86e740378282fc577c7f9a50c7ba70647924f42471f5a016a16cb3395c1777b3f6be04f99995c5ab16dff808dc52f46005869497b98be8e6f3dc85dd15dae0b

Download Submit
memory/504-120-0x0000000000000000-mapping.dmp

Download
memory/2344-115-0x00000000015A0000-0x00000000015A1000-memory.dmp

Filesize
4KB

Download
memory/3160-116-0x0000000000000000-mapping.dmp

Download
memory/3160-119-0x0000000002B30000-0x0000000002B31000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads