njrat | d638abd2e0c80c8ace2de8dc015b3a208916e6c4bd6a081a6fc2c09f8a77bc15

Analysis

max time kernel
4294225s
max time network
130s
platform
windows7_x64
resource
win7-20220310-en
submitted
23-03-2022 21:00

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

5.exe

Score

10^/10

njrat bot evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Bot

DanilWhiteNjrat-57320.portmap.host:57320

Mutex

802f813d3810aa536753efbd3390b541

Attributes

reg_key
802f813d3810aa536753efbd3390b541
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Executes dropped EXE 1 IoCs

pid	Process
1136	system.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\802f813d3810aa536753efbd3390b541.exe	system.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\802f813d3810aa536753efbd3390b541.exe	system.exe

Loads dropped DLL 1 IoCs

pid	Process
1660	5.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-1-5-21-2932610838-281738825-1127631353-1000\Software\Microsoft\Windows\CurrentVersion\Run\802f813d3810aa536753efbd3390b541 = "\"C:\\ProgramData\\system.exe\" .."	system.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\802f813d3810aa536753efbd3390b541 = "\"C:\\ProgramData\\system.exe\" .."	system.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 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe
Token: 33	1136	system.exe
Token: SeIncBasePriorityPrivilege	1136	system.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 1136	1660	5.exe	29
PID 1660 wrote to memory of 1136	1660	5.exe	29
PID 1660 wrote to memory of 1136	1660	5.exe	29
PID 1660 wrote to memory of 1136	1660	5.exe	29
PID 1136 wrote to memory of 2024	1136	system.exe	30
PID 1136 wrote to memory of 2024	1136	system.exe	30
PID 1136 wrote to memory of 2024	1136	system.exe	30
PID 1136 wrote to memory of 2024	1136	system.exe	30

C:\Users\Admin\AppData\Local\Temp\5.exe
"C:\Users\Admin\AppData\Local\Temp\5.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1660
- C:\ProgramData\system.exe
  "C:\ProgramData\system.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1136
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\system.exe" "system.exe" ENABLE
    3⤵
    PID:2024

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\system.exe

Filesize
37KB

MD5
e817d74d13c658890ff3a4c01ab44c62

SHA1
bf0b97392e7d56eee0b63dc65efff4db883cb0c7

SHA256
2945881f15e98a18d27108a29963988190853838f34faf3020e6c3c97342672d

SHA512
8d90ef308c1e0b7e01e7732e2cd819f07bfc1ef06e523efa81694ced75550c9f1be460fc9de412faeb96273a6492580402ab9c9538ed441fc26d96b6785e7815

Download Submit
C:\ProgramData\system.exe

Filesize
37KB

MD5
e817d74d13c658890ff3a4c01ab44c62

SHA1
bf0b97392e7d56eee0b63dc65efff4db883cb0c7

SHA256
2945881f15e98a18d27108a29963988190853838f34faf3020e6c3c97342672d

SHA512
8d90ef308c1e0b7e01e7732e2cd819f07bfc1ef06e523efa81694ced75550c9f1be460fc9de412faeb96273a6492580402ab9c9538ed441fc26d96b6785e7815

Download Submit
\ProgramData\system.exe

Filesize
37KB

MD5
e817d74d13c658890ff3a4c01ab44c62

SHA1
bf0b97392e7d56eee0b63dc65efff4db883cb0c7

SHA256
2945881f15e98a18d27108a29963988190853838f34faf3020e6c3c97342672d

SHA512
8d90ef308c1e0b7e01e7732e2cd819f07bfc1ef06e523efa81694ced75550c9f1be460fc9de412faeb96273a6492580402ab9c9538ed441fc26d96b6785e7815

Download Submit
memory/1136-61-0x0000000073F40000-0x00000000744EB000-memory.dmp

Filesize
5.7MB

Download
memory/1660-54-0x0000000075421000-0x0000000075423000-memory.dmp

Filesize
8KB

Download
memory/1660-55-0x0000000073F40000-0x00000000744EB000-memory.dmp

Filesize
5.7MB

Download