njrat | 9f85eb5b1e7b261c9a7a1cd793badff334e84942ed652f09a0fc7d83008fe621

General

Target

c5e2d8b234f4c2b2db29eba11e18a75c.exe
Size

388KB
MD5

c5e2d8b234f4c2b2db29eba11e18a75c
SHA1

6c88462bf8c577b1a6fc304f2724491736b56be5
SHA256

9f85eb5b1e7b261c9a7a1cd793badff334e84942ed652f09a0fc7d83008fe621
SHA512

dab93f487e09c14aaed8f32814d94dfbac9fa9e1d076d730337ab3379058b0bdd012a86219146010e6060eab77b654a8815208a0d027e1cbb3b25b62876f5fa7

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

karamnaser321.ddns.net:1177

Mutex

0518517d1f621a093c3997945c521862

Attributes

reg_key
0518517d1f621a093c3997945c521862
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 2 IoCs

Processes:

LocalHqxEsTdCwp.exeserver.exe

pid process

3224 LocalHqxEsTdCwp.exe
2956 server.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
3224	LocalHqxEsTdCwp.exe
2956	server.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\0518517d1f621a093c3997945c521862.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0518517d1f621a093c3997945c521862.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-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\0518517d1f621a093c3997945c521862 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\0518517d1f621a093c3997945c521862 = "\"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

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE

Modifies registry class 1 IoCs

Processes:

c5e2d8b234f4c2b2db29eba11e18a75c.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings	c5e2d8b234f4c2b2db29eba11e18a75c.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3456 WINWORD.EXE
3456 WINWORD.EXE

pid	process
3456	WINWORD.EXE
3456	WINWORD.EXE

Suspicious use of AdjustPrivilegeToken 29 IoCs

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe
Token: 33	2956	server.exe
Token: SeIncBasePriorityPrivilege	2956	server.exe

Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

WINWORD.EXE

pid process

3456 WINWORD.EXE
3456 WINWORD.EXE
3456 WINWORD.EXE
3456 WINWORD.EXE
3456 WINWORD.EXE
3456 WINWORD.EXE
3456 WINWORD.EXE

pid	process
3456	WINWORD.EXE
3456	WINWORD.EXE
3456	WINWORD.EXE
3456	WINWORD.EXE
3456	WINWORD.EXE
3456	WINWORD.EXE
3456	WINWORD.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

c5e2d8b234f4c2b2db29eba11e18a75c.exeLocalHqxEsTdCwp.exeserver.exe

description	pid	process	target process
PID 648 wrote to memory of 3224	648	c5e2d8b234f4c2b2db29eba11e18a75c.exe	LocalHqxEsTdCwp.exe
PID 648 wrote to memory of 3224	648	c5e2d8b234f4c2b2db29eba11e18a75c.exe	LocalHqxEsTdCwp.exe
PID 648 wrote to memory of 3224	648	c5e2d8b234f4c2b2db29eba11e18a75c.exe	LocalHqxEsTdCwp.exe
PID 648 wrote to memory of 3456	648	c5e2d8b234f4c2b2db29eba11e18a75c.exe	WINWORD.EXE
PID 648 wrote to memory of 3456	648	c5e2d8b234f4c2b2db29eba11e18a75c.exe	WINWORD.EXE
PID 3224 wrote to memory of 2956	3224	LocalHqxEsTdCwp.exe	server.exe
PID 3224 wrote to memory of 2956	3224	LocalHqxEsTdCwp.exe	server.exe
PID 3224 wrote to memory of 2956	3224	LocalHqxEsTdCwp.exe	server.exe
PID 2956 wrote to memory of 2820	2956	server.exe	netsh.exe
PID 2956 wrote to memory of 2820	2956	server.exe	netsh.exe
PID 2956 wrote to memory of 2820	2956	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\c5e2d8b234f4c2b2db29eba11e18a75c.exe
"C:\Users\Admin\AppData\Local\Temp\c5e2d8b234f4c2b2db29eba11e18a75c.exe"
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:648

C:\Users\Admin\AppData\LocalHqxEsTdCwp.exe
"C:\Users\Admin\AppData\LocalHqxEsTdCwp.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3224

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
3⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2956

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
4⤵
PID:2820

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\LocalVhJPsrdoQS.docx" /o ""
2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3456

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

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\LocalHqxEsTdCwp.exe
MD5
3c5d8b82a26ebfa52a7635f815315a71

SHA1
effa029f17398bee9a9229b4bba7ce42c968f194

SHA256
40e56583b337aa5a9cd070d40ac91ed2ec18ef8744a9bdc8cf2eb91d4a62019f

SHA512
db199a6a846dacec2cd49eebdc5b6b79e26fc8266f7a7b167968240b23fdac25e678352ca4c1c5cf2c52c3f6feb429504ef23cd967376e044c742ded44b623ee

Download Submit
C:\Users\Admin\AppData\LocalHqxEsTdCwp.exe
MD5
3c5d8b82a26ebfa52a7635f815315a71

SHA1
effa029f17398bee9a9229b4bba7ce42c968f194

SHA256
40e56583b337aa5a9cd070d40ac91ed2ec18ef8744a9bdc8cf2eb91d4a62019f

SHA512
db199a6a846dacec2cd49eebdc5b6b79e26fc8266f7a7b167968240b23fdac25e678352ca4c1c5cf2c52c3f6feb429504ef23cd967376e044c742ded44b623ee

Download Submit
C:\Users\Admin\AppData\LocalVhJPsrdoQS.docx
MD5
63c814344bb5edcac76c4f829c7f1dad

SHA1
77c3bd09de67bf2e0971a34a46a37cfc592ca5df

SHA256
ddfc3ed056efa3d87bd76e49647815c92d22af8a18d41161af7577b6e3681869

SHA512
58c4c6a616f1af40c52e131c5800adf58832eb975f17c291ae3d3c8826a02fe8e41492f5f0b91bdf0127994aa993d68eb766e0c486d8971b21c7b4ab8fa41de5

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe
MD5
3c5d8b82a26ebfa52a7635f815315a71

SHA1
effa029f17398bee9a9229b4bba7ce42c968f194

SHA256
40e56583b337aa5a9cd070d40ac91ed2ec18ef8744a9bdc8cf2eb91d4a62019f

SHA512
db199a6a846dacec2cd49eebdc5b6b79e26fc8266f7a7b167968240b23fdac25e678352ca4c1c5cf2c52c3f6feb429504ef23cd967376e044c742ded44b623ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe
MD5
3c5d8b82a26ebfa52a7635f815315a71

SHA1
effa029f17398bee9a9229b4bba7ce42c968f194

SHA256
40e56583b337aa5a9cd070d40ac91ed2ec18ef8744a9bdc8cf2eb91d4a62019f

SHA512
db199a6a846dacec2cd49eebdc5b6b79e26fc8266f7a7b167968240b23fdac25e678352ca4c1c5cf2c52c3f6feb429504ef23cd967376e044c742ded44b623ee

Download Submit
memory/648-2-0x00007FF91F570000-0x00007FF91FF10000-memory.dmp

Filesize
9.6MB

Download
memory/2820-14-0x0000000000000000-mapping.dmp

Download
memory/2956-10-0x0000000000000000-mapping.dmp

Download
memory/3224-3-0x0000000000000000-mapping.dmp

Download
memory/3456-6-0x0000000000000000-mapping.dmp

Download
memory/3456-9-0x00007FF91E780000-0x00007FF91EDB7000-memory.dmp

Filesize
6.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads