njrat | 8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded

General

Target

8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.exe
Size

63KB
MD5

f4d951691263d76bba6b791af761487a
SHA1

5ba092de55213130d45453ce70569b6d8f67e65e
SHA256

8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded
SHA512

f3d330788086ba96bf65bbc1498bf3cb83cb79f9088fa1ebd6c3a140b7a98192bc7c821c7207fcebb47c7dbdba00a062c84039239ed4a5ae1e37d19db3453e15
SSDEEP

1536:8dDFXXwqEcPpa+54aNEIaYnmGN6eyA37VXy:8dDFXXwWhaU4aGxYpN6HALVXy

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

2164 server.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

368 netsh.exe

pid	process
2164	server.exe

pid	process
368	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:

8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.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\c89c5661f15916f1fe92e1e20c377061.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c89c5661f15916f1fe92e1e20c377061.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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c89c5661f15916f1fe92e1e20c377061 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c89c5661f15916f1fe92e1e20c377061 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe

Drops file in Windows directory 2 IoCs

Processes:

8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.exe

description	ioc	process
File created	C:\Windows\Microsoft.NET\Framework64\v2.0.50727\config\security.config.cch.new	8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.exe
File created	C:\Windows\Microsoft.NET\Framework64\v2.0.50727\config\enterprisesec.config.cch.new	8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.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	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe
Token: 33	2164	server.exe
Token: SeIncBasePriorityPrivilege	2164	server.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.exeserver.exe

description	pid	process	target process
PID 4848 wrote to memory of 2164	4848	8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.exe	server.exe
PID 4848 wrote to memory of 2164	4848	8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.exe	server.exe
PID 2164 wrote to memory of 368	2164	server.exe	netsh.exe
PID 2164 wrote to memory of 368	2164	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.exe
"C:\Users\Admin\AppData\Local\Temp\8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4848

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:2164

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:368

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
63KB

MD5
f4d951691263d76bba6b791af761487a

SHA1
5ba092de55213130d45453ce70569b6d8f67e65e

SHA256
8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded

SHA512
f3d330788086ba96bf65bbc1498bf3cb83cb79f9088fa1ebd6c3a140b7a98192bc7c821c7207fcebb47c7dbdba00a062c84039239ed4a5ae1e37d19db3453e15

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe
Filesize
63KB

MD5
f4d951691263d76bba6b791af761487a

SHA1
5ba092de55213130d45453ce70569b6d8f67e65e

SHA256
8202bf15241572d97e69284a49e93f767b9a4e3353dad0ca8229e96970342ded

SHA512
f3d330788086ba96bf65bbc1498bf3cb83cb79f9088fa1ebd6c3a140b7a98192bc7c821c7207fcebb47c7dbdba00a062c84039239ed4a5ae1e37d19db3453e15

Download Submit
memory/368-137-0x0000000000000000-mapping.dmp

Download
memory/2164-133-0x0000000000000000-mapping.dmp

Download
memory/2164-136-0x00007FFB84BE0000-0x00007FFB85616000-memory.dmp

Filesize
10.2MB

Download
memory/4848-132-0x00007FFB84BE0000-0x00007FFB85616000-memory.dmp

Filesize
10.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads