njrat | 7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471

General

Target

7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471.exe
Size

103KB
MD5

6134ec7d1283de4eaaa6fec2a8506768
SHA1

673238ff49a3168d01678bdcb5c950b66edbc88a
SHA256

7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471
SHA512

44245dee219f1d7c7d6c2d65e4a00465df1d0db9a22e918eea413cf38a4fa4b62b687da9d6b6dcaa344ec15bd7986c12756984dbc61addcdb6d001072948d7dd
SSDEEP

1536:T+nJ8sXNh0ReMTPu/J3li7ynvuI4yso7ULr1ifvAs8i87+DktUC:6J8kNiRR7O3l9v0yuEfvA/i87qDC

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

3736 server.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1132 netsh.exe

pid	process
3736	server.exe

pid	process
1132	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:

7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471.exe

Drops startup file 2 IoCs

Processes:

server.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\61337ec97b4fdd50ed301f424ea2ca76.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\61337ec97b4fdd50ed301f424ea2ca76.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\61337ec97b4fdd50ed301f424ea2ca76 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\61337ec97b4fdd50ed301f424ea2ca76 = "\"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	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe
Token: 33	3736	server.exe
Token: SeIncBasePriorityPrivilege	3736	server.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471.exeserver.exe

description	pid	process	target process
PID 616 wrote to memory of 3736	616	7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471.exe	server.exe
PID 616 wrote to memory of 3736	616	7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471.exe	server.exe
PID 3736 wrote to memory of 1132	3736	server.exe	netsh.exe
PID 3736 wrote to memory of 1132	3736	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471.exe
"C:\Users\Admin\AppData\Local\Temp\7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:616

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:3736

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:1132

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
103KB

MD5
6134ec7d1283de4eaaa6fec2a8506768

SHA1
673238ff49a3168d01678bdcb5c950b66edbc88a

SHA256
7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471

SHA512
44245dee219f1d7c7d6c2d65e4a00465df1d0db9a22e918eea413cf38a4fa4b62b687da9d6b6dcaa344ec15bd7986c12756984dbc61addcdb6d001072948d7dd

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

Filesize
103KB

MD5
6134ec7d1283de4eaaa6fec2a8506768

SHA1
673238ff49a3168d01678bdcb5c950b66edbc88a

SHA256
7c4177f841e33098ff6c34c8bd7c31b9f26e81593c3fbac4bf6833edb1f87471

SHA512
44245dee219f1d7c7d6c2d65e4a00465df1d0db9a22e918eea413cf38a4fa4b62b687da9d6b6dcaa344ec15bd7986c12756984dbc61addcdb6d001072948d7dd

Download Submit
memory/616-132-0x00007FFFC84A0000-0x00007FFFC8ED6000-memory.dmp

Filesize
10.2MB

Download
memory/1132-137-0x0000000000000000-mapping.dmp

Download
memory/3736-133-0x0000000000000000-mapping.dmp

Download
memory/3736-136-0x00007FFFC84A0000-0x00007FFFC8ED6000-memory.dmp

Filesize
10.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads