njrat | f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122dd

General

Target

f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
Size

1.2MB
MD5

f583d334c2d7b0993a306101b00c90f0
SHA1

9c872e81f2b5ab31ff6f289f82046ce68ce49889
SHA256

f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122dd
SHA512

a21b1b94988d7e9ab0c5d411fb58c4e809eed27a842eea554794e27dae83673c54395a34145ec06d4ef3a15472f3096e968d3ebb1af6617491b1bc286966934d
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95G:Jh+ZkldoPK8YaW7CaZ7IHG

Score

10^/10

njrat redlanhopto discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

redlanhopto

C2

redlan.hopto.org:5553

Mutex

d25d360449d7bab3069e1b77b3a914a3

Attributes

reg_key
d25d360449d7bab3069e1b77b3a914a3
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
2256	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2968	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x00300000000174a2-14.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2844 set thread context of 2052	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	32

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 5 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	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	data.exe

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
2344	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
2968	data.exe
2968	data.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	2052	RegAsm.exe
Token: 33	2052	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2052	RegAsm.exe
Token: 33	2052	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2052	RegAsm.exe
Token: 33	2052	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2052	RegAsm.exe
Token: 33	2052	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2052	RegAsm.exe
Token: 33	2052	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2052	RegAsm.exe
Token: 33	2052	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2052	RegAsm.exe
Token: 33	2052	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2052	RegAsm.exe
Token: 33	2052	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2052	RegAsm.exe
Token: 33	2052	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2052	RegAsm.exe
Token: 33	2052	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2052	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
2968	data.exe
2968	data.exe
2968	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
2968	data.exe
2968	data.exe
2968	data.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2052	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	32
PID 2844 wrote to memory of 2052	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	32
PID 2844 wrote to memory of 2052	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	32
PID 2844 wrote to memory of 2052	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	32
PID 2844 wrote to memory of 2052	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	32
PID 2844 wrote to memory of 2052	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	32
PID 2844 wrote to memory of 2052	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	32
PID 2844 wrote to memory of 2052	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	32
PID 2844 wrote to memory of 2052	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	32
PID 2052 wrote to memory of 2256	2052	RegAsm.exe	33
PID 2052 wrote to memory of 2256	2052	RegAsm.exe	33
PID 2052 wrote to memory of 2256	2052	RegAsm.exe	33
PID 2052 wrote to memory of 2256	2052	RegAsm.exe	33
PID 2844 wrote to memory of 2344	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	36
PID 2844 wrote to memory of 2344	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	36
PID 2844 wrote to memory of 2344	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	36
PID 2844 wrote to memory of 2344	2844	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	36
PID 2928 wrote to memory of 2968	2928	taskeng.exe	39
PID 2928 wrote to memory of 2968	2928	taskeng.exe	39
PID 2928 wrote to memory of 2968	2928	taskeng.exe	39
PID 2928 wrote to memory of 2968	2928	taskeng.exe	39

C:\Users\Admin\AppData\Local\Temp\f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
"C:\Users\Admin\AppData\Local\Temp\f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe" "RegAsm.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2256
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn igfxHK /tr "C:\Users\Admin\AppData\Roaming\chkdsk\data.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2344

C:\Windows\system32\taskeng.exe
taskeng.exe {977945E4-DF15-4588-8DDB-BE8C01A8C563} S-1-5-21-1846800975-3917212583-2893086201-1000:ZQABOPWE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2928
- C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
  C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

1

T1562.004

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:\Users\Admin\AppData\Roaming\chkdsk\data.exe

Filesize
1.2MB

MD5
0c20da89d8dbbdc6b677860277c96063

SHA1
4fd8cde68b8a27a973cdbb336e1ff779d0a1f22a

SHA256
028c1a77a7b8f48a9f747d941021bc3c94feae4b4ce668b963abc996d7e8d671

SHA512
25cae930f6131d83dd852d596c4183c6c2221cca066319ee274b98ffbd31168b8fe670d770f39479140a657aa949c1fe71e39038a982a2f61b54c834efc43df9

Download Submit
memory/2052-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2052-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2052-9-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2052-8-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2052-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2052-10-0x0000000073C62000-0x0000000073C64000-memory.dmp

Filesize
8KB

Download
memory/2052-11-0x0000000073C62000-0x0000000073C64000-memory.dmp

Filesize
8KB

Download
memory/2844-0-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads