njrat | 8c402138d923ed8e4403dd04010eaa9c593f42fc02c5fa349774c44d8dda006e

Analysis

max time kernel
135s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
17-03-2023 04:08

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General

Target

bK7G.exe
Size

23KB
MD5

227368ebab549d28b20ce786f72320c7
SHA1

50f7d115ef22a2ea3d906af5e675f416ee78b5b8
SHA256

8c402138d923ed8e4403dd04010eaa9c593f42fc02c5fa349774c44d8dda006e
SHA512

9fd1d82ba2c09c23280ab00cf99790d2c66d1c4e1ebed32b6e8f5ab5f27814d95c800b18da216656b536f3f0cb1c069a29ada8ec46c6a8805e9dc2a630651f39
SSDEEP

384:0oWtkEwn65rgjAsGipk58D16xgXakhbZD0mRvR6JZlbw8hqIusZzZMQ:j7O89pbrRpcnui

Score

10^/10

njrat evasion trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Modifies Windows Firewall 1 TTPs 2 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exenetsh.exe

pid process

4972 netsh.exe
1076 netsh.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2000 PING.EXE

pid	process
4972	netsh.exe
1076	netsh.exe

pid	process
2000	PING.EXE

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

bK7G.exe

description	pid	process
Token: SeDebugPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe
Token: 33	1744	bK7G.exe
Token: SeIncBasePriorityPrivilege	1744	bK7G.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

bK7G.execmd.exe

description	pid	process	target process
PID 1744 wrote to memory of 4972	1744	bK7G.exe	netsh.exe
PID 1744 wrote to memory of 4972	1744	bK7G.exe	netsh.exe
PID 1744 wrote to memory of 4972	1744	bK7G.exe	netsh.exe
PID 1744 wrote to memory of 1076	1744	bK7G.exe	netsh.exe
PID 1744 wrote to memory of 1076	1744	bK7G.exe	netsh.exe
PID 1744 wrote to memory of 1076	1744	bK7G.exe	netsh.exe
PID 1744 wrote to memory of 5048	1744	bK7G.exe	cmd.exe
PID 1744 wrote to memory of 5048	1744	bK7G.exe	cmd.exe
PID 1744 wrote to memory of 5048	1744	bK7G.exe	cmd.exe
PID 5048 wrote to memory of 2000	5048	cmd.exe	PING.EXE
PID 5048 wrote to memory of 2000	5048	cmd.exe	PING.EXE
PID 5048 wrote to memory of 2000	5048	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\bK7G.exe
"C:\Users\Admin\AppData\Local\Temp\bK7G.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\bK7G.exe" "bK7G.exe" ENABLE
2⤵
- Modifies Windows Firewall
PID:4972

C:\Windows\SysWOW64\netsh.exe
netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\bK7G.exe"
2⤵
- Modifies Windows Firewall
PID:1076

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 0 -n 2 & del "C:\Users\Admin\AppData\Local\Temp\bK7G.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:5048

C:\Windows\SysWOW64\PING.EXE
ping 0 -n 2
3⤵
- Runs ping.exe
PID:2000

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

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Downloads

memory/1744-133-0x00000000001E0000-0x00000000001F0000-memory.dmp

Filesize
64KB

Download
memory/1744-134-0x00000000001E0000-0x00000000001F0000-memory.dmp

Filesize
64KB

Download
memory/1744-135-0x00000000001E0000-0x00000000001F0000-memory.dmp

Filesize
64KB

Download
memory/1744-136-0x00000000001E0000-0x00000000001F0000-memory.dmp

Filesize
64KB

Download