njrat | 33e10bdcff6ab52e473ffeff0c0a853fd8786c3c26b896a05b7091fbcccb9555

Analysis

max time kernel
149s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20231128-en
resource tags

arch:x64arch:x86image:win11-20231128-enlocale:en-usos:windows11-21h2-x64system
submitted
05-12-2023 02:43

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General

Target

Lammer.exe
Size

23KB
MD5

d0c2d069ebad310d330724ecb8c34383
SHA1

948c7dac951630a93d1d50cdc18a785a66bde4f3
SHA256

33e10bdcff6ab52e473ffeff0c0a853fd8786c3c26b896a05b7091fbcccb9555
SHA512

5ca77dad6ef30a5fc7031819f9d1311ec8f168c94c5678a712c8aeb82bf7101b85824a5f1e7b96ecc2746cf50f56e0c0d6c80a0ab471a67a4744b4015bcb075b
SSDEEP

384:JluBPiZCMfdfSJrQbsLRGSIxYVL46pg/i8BD9BmRvR6JZlbw8hqIusZzZoT:+OmhtIiRpcnuZ

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

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

Windows Service
T1543.003

Processes:

netsh.exe

pid process

1608 netsh.exe

pid	process
1608	netsh.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Lammer.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3101619610-3579357151-2691346733-1000\Software\Microsoft\Windows\CurrentVersion\Run\277e7c3302a3fa2bce6fdf09291934dd = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Lammer.exe\" .."	Lammer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\277e7c3302a3fa2bce6fdf09291934dd = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Lammer.exe\" .."	Lammer.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

Lammer.exe

description	pid	process
Token: SeDebugPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe
Token: 33	2100	Lammer.exe
Token: SeIncBasePriorityPrivilege	2100	Lammer.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

Lammer.exe

description	pid	process	target process
PID 2100 wrote to memory of 1608	2100	Lammer.exe	netsh.exe
PID 2100 wrote to memory of 1608	2100	Lammer.exe	netsh.exe
PID 2100 wrote to memory of 1608	2100	Lammer.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\Lammer.exe
"C:\Users\Admin\AppData\Local\Temp\Lammer.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2100

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Lammer.exe" "Lammer.exe" ENABLE
2⤵
- Modifies Windows Firewall
PID:1608

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2100-0-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/2100-1-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/2100-2-0x00000000016C0000-0x00000000016D0000-memory.dmp

Filesize
64KB

Download
memory/2100-3-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/2100-4-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/2100-5-0x00000000016C0000-0x00000000016D0000-memory.dmp

Filesize
64KB

Download
memory/2100-6-0x00000000016C0000-0x00000000016D0000-memory.dmp

Filesize
64KB

Download
memory/2100-7-0x00000000016C0000-0x00000000016D0000-memory.dmp

Filesize
64KB

Download