njrat | 004cae62d64d4fd40532660626ef95b5c5a899de64e060f9e6223974219ef080

General

Target

49545f0af79ded22054bfd851bb3d864.exe
Size

87KB
MD5

49545f0af79ded22054bfd851bb3d864
SHA1

35db307d4e2d287e005262a5d5edd56b73bfc415
SHA256

004cae62d64d4fd40532660626ef95b5c5a899de64e060f9e6223974219ef080
SHA512

96a3366ba95c669d81803ab8157364df0e7dc2ef6f6e0f80775e0a8d21c79ab12c162de4a444ce13cba4d76bce6dd05b1356f2ad13a613e015a9e60b01f6956a

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

pid	Process
856	explorer.exe

Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbcbedd4b56a64913eb91b5733046b75.exe	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbcbedd4b56a64913eb91b5733046b75.exe	explorer.exe

Loads dropped DLL 1 IoCs

pid	Process
1892	49545f0af79ded22054bfd851bb3d864.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\fbcbedd4b56a64913eb91b5733046b75 = "\"C:\\ProgramData\\explorer.exe\" .."	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\fbcbedd4b56a64913eb91b5733046b75 = "\"C:\\ProgramData\\explorer.exe\" .."	explorer.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 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe
Token: 33	856	explorer.exe
Token: SeIncBasePriorityPrivilege	856	explorer.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 856	1892	49545f0af79ded22054bfd851bb3d864.exe	29
PID 1892 wrote to memory of 856	1892	49545f0af79ded22054bfd851bb3d864.exe	29
PID 1892 wrote to memory of 856	1892	49545f0af79ded22054bfd851bb3d864.exe	29
PID 1892 wrote to memory of 856	1892	49545f0af79ded22054bfd851bb3d864.exe	29
PID 856 wrote to memory of 764	856	explorer.exe	30
PID 856 wrote to memory of 764	856	explorer.exe	30
PID 856 wrote to memory of 764	856	explorer.exe	30
PID 856 wrote to memory of 764	856	explorer.exe	30

C:\Users\Admin\AppData\Local\Temp\49545f0af79ded22054bfd851bb3d864.exe
"C:\Users\Admin\AppData\Local\Temp\49545f0af79ded22054bfd851bb3d864.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1892
- C:\ProgramData\explorer.exe
  "C:\ProgramData\explorer.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:856
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\explorer.exe" "explorer.exe" ENABLE
    3⤵
    PID:764

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/856-66-0x0000000000A60000-0x0000000000A61000-memory.dmp

Filesize
4KB

Download
memory/1892-59-0x0000000075D51000-0x0000000075D53000-memory.dmp

Filesize
8KB

Download
memory/1892-60-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download

Analysis

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