njrat | 94e8fa6dac6e1a9e76dabf84a2478626eb9cba660c3a9dbe525caa7271fcdef6

General

Target

94e8fa6dac6e1a9e76dabf84a2478626eb9cba660c3a9dbe525caa7271fcdef6.exe
Size

25KB
MD5

2dff234d815257b3cec6c671f59adbd8
SHA1

9e61b93827619f545e56e0dce967166105d9659d
SHA256

94e8fa6dac6e1a9e76dabf84a2478626eb9cba660c3a9dbe525caa7271fcdef6
SHA512

5ea83782bcc35aa3e9abd355017a88deded529d8f95fcc854f9bc7f3be12d72cb318e77172c9af87358432ec5f1f93e32d52b759b42ad88257569700d28ee154
SSDEEP

768:5vkJ2tI9rN28sZIyLLoT6t5Qa+tAgzyyKb:yEtkB2SIv6aTz

Score

10^/10

njrat zula persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

zula

C2

darkerzm.duckdns.org:1604

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	94e8fa6dac6e1a9e76dabf84a2478626eb9cba660c3a9dbe525caa7271fcdef6.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
1224	dllhost.exe
3064	Server.exe
4804	Server.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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\dllhost.exe\" .."	dllhost.exe

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2740	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3976	94e8fa6dac6e1a9e76dabf84a2478626eb9cba660c3a9dbe525caa7271fcdef6.exe
1224	dllhost.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe
Token: 33	1224	dllhost.exe
Token: SeIncBasePriorityPrivilege	1224	dllhost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3976 wrote to memory of 1224	3976	94e8fa6dac6e1a9e76dabf84a2478626eb9cba660c3a9dbe525caa7271fcdef6.exe	84
PID 3976 wrote to memory of 1224	3976	94e8fa6dac6e1a9e76dabf84a2478626eb9cba660c3a9dbe525caa7271fcdef6.exe	84
PID 1224 wrote to memory of 2740	1224	dllhost.exe	88
PID 1224 wrote to memory of 2740	1224	dllhost.exe	88

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\94e8fa6dac6e1a9e76dabf84a2478626eb9cba660c3a9dbe525caa7271fcdef6.exe
"C:\Users\Admin\AppData\Local\Temp\94e8fa6dac6e1a9e76dabf84a2478626eb9cba660c3a9dbe525caa7271fcdef6.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3976
- C:\Users\Admin\AppData\Roaming\dllhost.exe
  "C:\Users\Admin\AppData\Roaming\dllhost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1224
- - C:\Windows\SYSTEM32\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2740

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
PID:3064

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
PID:4804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0\UsageLogs\Server.exe.log

Filesize
408B

MD5
4a02286231546d5a837701befc9aeafa

SHA1
ca28fba9e5d36d4093ca5a5c0d9cc6fa88756710

SHA256
c55d933eb6b3c6317d6c0ef97e400222493bafa7cf2007e8b2fd0653288a560f

SHA512
5f27784009926af504353da5442acc75cb6509d942c3b7931f386408f5e0d6e4b0fec421f902b04af65ec3116850bb0e82e968d458b0632bb5f451bc5f4a7f93

Download Submit
C:\Users\Admin\AppData\Roaming\dllhost.exe

Filesize
25KB

MD5
2dff234d815257b3cec6c671f59adbd8

SHA1
9e61b93827619f545e56e0dce967166105d9659d

SHA256
94e8fa6dac6e1a9e76dabf84a2478626eb9cba660c3a9dbe525caa7271fcdef6

SHA512
5ea83782bcc35aa3e9abd355017a88deded529d8f95fcc854f9bc7f3be12d72cb318e77172c9af87358432ec5f1f93e32d52b759b42ad88257569700d28ee154

Download Submit
memory/1224-25-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/1224-23-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/1224-26-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/1224-24-0x0000000000D00000-0x0000000000D08000-memory.dmp

Filesize
32KB

Download
memory/1224-19-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/1224-18-0x0000000000CF0000-0x0000000000D02000-memory.dmp

Filesize
72KB

Download
memory/1224-17-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/1224-20-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/3064-32-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/3064-30-0x0000000000950000-0x0000000000962000-memory.dmp

Filesize
72KB

Download
memory/3064-29-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/3976-2-0x000000001BB90000-0x000000001C05E000-memory.dmp

Filesize
4.8MB

Download
memory/3976-16-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/3976-0-0x00007FFAAA0F5000-0x00007FFAAA0F6000-memory.dmp

Filesize
4KB

Download
memory/3976-3-0x0000000001100000-0x0000000001112000-memory.dmp

Filesize
72KB

Download
memory/3976-6-0x000000001C4B0000-0x000000001C54C000-memory.dmp

Filesize
624KB

Download
memory/3976-5-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/3976-4-0x000000001C110000-0x000000001C1B6000-memory.dmp

Filesize
664KB

Download
memory/3976-1-0x00007FFAA9E40000-0x00007FFAAA7E1000-memory.dmp

Filesize
9.6MB

Download
memory/4804-35-0x000000001B680000-0x000000001B692000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads