njrat | 1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1

General

Target

1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
Size

1.2MB
MD5

d1bd0385f5db843cef6bbfb7fb195975
SHA1

9f19af1c49820e8a280913c6102ab656c883203c
SHA256

1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1
SHA512

d6a686edacca1a4d4f3fbfc9687eedc445a65dd336848d462f8e6a6f8fb74d117520e52bebd2f75cfa0dad5d8af3f049265d2c4ee3bf81bd1ef45fd83e4907ff
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95t:Jh+ZkldoPK8YaW7CaZ7IHt

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
900	netsh.exe

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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe

Executes dropped EXE 1 IoCs

pid	Process
3360	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0008000000023cb7-14.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3304 set thread context of 3384	3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	99
PID 3360 set thread context of 2200	3360	data.exe	107

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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2100	schtasks.exe
764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
3360	data.exe
3360	data.exe
3360	data.exe
3360	data.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	3384	RegAsm.exe
Token: 33	3384	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3384	RegAsm.exe
Token: 33	3384	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3384	RegAsm.exe
Token: 33	3384	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3384	RegAsm.exe
Token: 33	3384	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3384	RegAsm.exe
Token: 33	3384	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3384	RegAsm.exe
Token: 33	3384	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3384	RegAsm.exe
Token: 33	3384	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3384	RegAsm.exe
Token: 33	3384	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3384	RegAsm.exe
Token: 33	3384	RegAsm.exe
Token: SeIncBasePriorityPrivilege	3384	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
3360	data.exe
3360	data.exe
3360	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
3360	data.exe
3360	data.exe
3360	data.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3304 wrote to memory of 3384	3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	99
PID 3304 wrote to memory of 3384	3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	99
PID 3304 wrote to memory of 3384	3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	99
PID 3304 wrote to memory of 3384	3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	99
PID 3304 wrote to memory of 3384	3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	99
PID 3384 wrote to memory of 900	3384	RegAsm.exe	101
PID 3384 wrote to memory of 900	3384	RegAsm.exe	101
PID 3384 wrote to memory of 900	3384	RegAsm.exe	101
PID 3304 wrote to memory of 2100	3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	104
PID 3304 wrote to memory of 2100	3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	104
PID 3304 wrote to memory of 2100	3304	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	104
PID 3360 wrote to memory of 2200	3360	data.exe	107
PID 3360 wrote to memory of 2200	3360	data.exe	107
PID 3360 wrote to memory of 2200	3360	data.exe	107
PID 3360 wrote to memory of 2200	3360	data.exe	107
PID 3360 wrote to memory of 2200	3360	data.exe	107

C:\Users\Admin\AppData\Local\Temp\1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
"C:\Users\Admin\AppData\Local\Temp\1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe"
1⤵
- Checks computer location settings
- 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:3304
- 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:3384
- - 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:900
- 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:2100

C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
1⤵
- Executes dropped EXE
- 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:3360
- 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
  PID:2200
- 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⤵
  - Scheduled Task/Job: Scheduled Task
  PID:764

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

Query Registry

1

T1012

System Information Discovery

2

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
1c709921aace8cbfd1b891df7fc18b79

SHA1
32b70ff9e1b9a9d922fc638a5e0907d0ea10938b

SHA256
017925daee9e535cb25ad2c916706b39d6da422b920ccf900989b3bc24117c7b

SHA512
28b737a0641a64499992e40e19bcfcdf733eaa25c5b47630b13c544b168fed30493867961335e1575ea2ec390c50cbb9ef119f39142c7e12518eaf251d06f923

Download Submit
memory/3304-0-0x00000000008F0000-0x00000000008F1000-memory.dmp

Filesize
4KB

Download
memory/3384-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/3384-6-0x0000000073F62000-0x0000000073F63000-memory.dmp

Filesize
4KB

Download
memory/3384-7-0x0000000073F60000-0x0000000074511000-memory.dmp

Filesize
5.7MB

Download
memory/3384-8-0x0000000073F60000-0x0000000074511000-memory.dmp

Filesize
5.7MB

Download
memory/3384-9-0x0000000073F62000-0x0000000073F63000-memory.dmp

Filesize
4KB

Download
memory/3384-10-0x0000000073F60000-0x0000000074511000-memory.dmp

Filesize
5.7MB

Download
memory/3384-11-0x0000000073F60000-0x0000000074511000-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