njrat | 3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051

General

Target

3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051.exe
Size

23KB
MD5

7538abe7997da17c2c13a1aac18a386f
SHA1

88a79a6ea451e6031e885420eda68b1e9f33cf67
SHA256

3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051
SHA512

3ea1186ac4fdef53e2e427b78ac410d7298961d45875f7c156c8e1aa1478080cdbdff6e9c864dd9289104d0217345ee9293888711db7785586eec9d5099236d5
SSDEEP

384:ffQeCo2zmZbQHkJeCdUwBvQ61gjuQBnB9mRvR6JZlbw8hqIusZzZEW1:fA5yBVd7RpcnuM1

Score

10^/10

njrat nigguh discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

NIGGUH

C2

iamsprey.ddns.net:1605

Mutex

4d50ff0f3a4eb213da8fe301253af367

Attributes

reg_key
4d50ff0f3a4eb213da8fe301253af367
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2808	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4d50ff0f3a4eb213da8fe301253af367.exe	dllhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4d50ff0f3a4eb213da8fe301253af367.exe	dllhost.exe

Executes dropped EXE 1 IoCs

pid	Process
2496	dllhost.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\4d50ff0f3a4eb213da8fe301253af367 = "\"C:\\Windows\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\4d50ff0f3a4eb213da8fe301253af367 = "\"C:\\Windows\\dllhost.exe\" .."	dllhost.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\dllhost.exe	3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe
Token: 33	2496	dllhost.exe
Token: SeIncBasePriorityPrivilege	2496	dllhost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 2496	1588	3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051.exe	30
PID 1588 wrote to memory of 2496	1588	3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051.exe	30
PID 1588 wrote to memory of 2496	1588	3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051.exe	30
PID 1588 wrote to memory of 2496	1588	3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051.exe	30
PID 2496 wrote to memory of 2808	2496	dllhost.exe	31
PID 2496 wrote to memory of 2808	2496	dllhost.exe	31
PID 2496 wrote to memory of 2808	2496	dllhost.exe	31
PID 2496 wrote to memory of 2808	2496	dllhost.exe	31

C:\Users\Admin\AppData\Local\Temp\3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051.exe
"C:\Users\Admin\AppData\Local\Temp\3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\dllhost.exe
  "C:\Windows\dllhost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2496
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\dllhost.exe" "dllhost.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\dllhost.exe

Filesize
23KB

MD5
7538abe7997da17c2c13a1aac18a386f

SHA1
88a79a6ea451e6031e885420eda68b1e9f33cf67

SHA256
3f94663bb37a9344adbcab198cdd0496971d0bd202ac72dbe374e63f21988051

SHA512
3ea1186ac4fdef53e2e427b78ac410d7298961d45875f7c156c8e1aa1478080cdbdff6e9c864dd9289104d0217345ee9293888711db7785586eec9d5099236d5

Download Submit
memory/1588-0-0x0000000074D81000-0x0000000074D82000-memory.dmp

Filesize
4KB

Download
memory/1588-1-0x0000000074D80000-0x000000007532B000-memory.dmp

Filesize
5.7MB

Download
memory/1588-2-0x0000000074D80000-0x000000007532B000-memory.dmp

Filesize
5.7MB

Download
memory/1588-9-0x0000000074D80000-0x000000007532B000-memory.dmp

Filesize
5.7MB

Download
memory/2496-10-0x0000000074D80000-0x000000007532B000-memory.dmp

Filesize
5.7MB

Download
memory/2496-11-0x0000000074D80000-0x000000007532B000-memory.dmp

Filesize
5.7MB

Download
memory/2496-13-0x0000000074D80000-0x000000007532B000-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