njrat | 8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539

Analysis

max time kernel
149s
max time network
140s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
28-09-2024 07:35

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General

Target

8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe
Size

43KB
MD5

2dc92821a7e65bba20622c55f5439c37
SHA1

c8a54e8bf0b0e7ced9e93a7605d1a9875c00ac05
SHA256

8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539
SHA512

68103f111040da2af8184dc2016973d21d9fcb354c392db9d0cfe60bf473b752803eefd7050d0bd53050173777a123d3fcd3f9ddda9f407731126c928ecf5ca5
SSDEEP

384:QZycXxy0lwZmoy7Y/oewQMNxS9UatS9D9O5UE5QzwBlpJNakkjh/TzF7pWnA3grW:WplGol7cobK9TvQO+xd+L

Score

10^/10

njrat kulum discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

Kulum

34.89.221.19:4444

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

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

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2536	systemupdate.exe

Loads dropped DLL 1 IoCs

pid	Process
2672	8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\systemupdate.exe\" .."	systemupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\systemupdate.exe\" .."	systemupdate.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	systemupdate.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2672	8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe
2536	systemupdate.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe
Token: 33	2536	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2536	systemupdate.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2536	2672	8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe	31
PID 2672 wrote to memory of 2536	2672	8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe	31
PID 2672 wrote to memory of 2536	2672	8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe	31
PID 2672 wrote to memory of 2536	2672	8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe	31
PID 2672 wrote to memory of 2536	2672	8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe	31
PID 2672 wrote to memory of 2536	2672	8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe	31
PID 2672 wrote to memory of 2536	2672	8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe	31

C:\Users\Admin\AppData\Local\Temp\8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe
"C:\Users\Admin\AppData\Local\Temp\8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Users\Admin\AppData\Roaming\systemupdate.exe
  "C:\Users\Admin\AppData\Roaming\systemupdate.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:2536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\systemupdate.exe

Filesize
43KB

MD5
2dc92821a7e65bba20622c55f5439c37

SHA1
c8a54e8bf0b0e7ced9e93a7605d1a9875c00ac05

SHA256
8a0a78df298dc039aca3ead63d2f293d980c69ba9db23d5c2f2a9b37ce33b539

SHA512
68103f111040da2af8184dc2016973d21d9fcb354c392db9d0cfe60bf473b752803eefd7050d0bd53050173777a123d3fcd3f9ddda9f407731126c928ecf5ca5

Download Submit
memory/2536-11-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2536-13-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2536-12-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2536-15-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2672-0-0x0000000074821000-0x0000000074822000-memory.dmp

Filesize
4KB

Download
memory/2672-1-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2672-2-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download
memory/2672-10-0x0000000074820000-0x0000000074DCB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads