njrat | cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbd

General

Target

cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
Size

1.2MB
MD5

57e7b2023d720e3b23b2855f6e918590
SHA1

39cb1addbea4be2e84c5c68d42c008eb8df369e0
SHA256

cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbd
SHA512

365e6d1fc86cf8c1c8dc1adb8accec419da5acd34363adfddbdfe307965e07470c7d9e6dbdc656c9054107e0fbd15355409ee14780e2b396815340c00fd890ed
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95c:Jh+ZkldoPK8YaW7CaZ7IHc

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
1732	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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe

Executes dropped EXE 1 IoCs

pid	Process
2676	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0008000000023caa-14.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4800 set thread context of 2372	4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	91

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	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.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
520	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
2676	data.exe
2676	data.exe
2676	data.exe
2676	data.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	2372	RegAsm.exe
Token: 33	2372	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2372	RegAsm.exe
Token: 33	2372	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2372	RegAsm.exe
Token: 33	2372	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2372	RegAsm.exe
Token: 33	2372	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2372	RegAsm.exe
Token: 33	2372	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2372	RegAsm.exe
Token: 33	2372	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2372	RegAsm.exe
Token: 33	2372	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2372	RegAsm.exe
Token: 33	2372	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2372	RegAsm.exe
Token: 33	2372	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2372	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
2676	data.exe
2676	data.exe
2676	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
2676	data.exe
2676	data.exe
2676	data.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 2372	4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	91
PID 4800 wrote to memory of 2372	4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	91
PID 4800 wrote to memory of 2372	4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	91
PID 4800 wrote to memory of 2372	4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	91
PID 4800 wrote to memory of 2372	4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	91
PID 2372 wrote to memory of 1732	2372	RegAsm.exe	92
PID 2372 wrote to memory of 1732	2372	RegAsm.exe	92
PID 2372 wrote to memory of 1732	2372	RegAsm.exe	92
PID 4800 wrote to memory of 520	4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	94
PID 4800 wrote to memory of 520	4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	94
PID 4800 wrote to memory of 520	4800	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	94

C:\Users\Admin\AppData\Local\Temp\cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
"C:\Users\Admin\AppData\Local\Temp\cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.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:4800
- 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:2372
- - 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:1732
- 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:520

C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2676

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
06a318d137cfa902917ff313f566223c

SHA1
9f4dae331e3095e0b31f554fed167edacd669515

SHA256
256bc8d92215d690399248ff3d18c72031c61e8dcfa8e3b57a24e64185ce6971

SHA512
1cc86652eabd7e7fb3c6144c3b2db42383079d40b550ff2f135301294e710a29ef322a2d606bfb1b1c4b793bc5f793a45ce529908dae9c010bb70c789b5562b4

Download Submit
memory/2372-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2372-6-0x0000000073D52000-0x0000000073D53000-memory.dmp

Filesize
4KB

Download
memory/2372-7-0x0000000073D50000-0x0000000074301000-memory.dmp

Filesize
5.7MB

Download
memory/2372-8-0x0000000073D50000-0x0000000074301000-memory.dmp

Filesize
5.7MB

Download
memory/2372-9-0x0000000073D52000-0x0000000073D53000-memory.dmp

Filesize
4KB

Download
memory/2372-10-0x0000000073D50000-0x0000000074301000-memory.dmp

Filesize
5.7MB

Download
memory/2372-11-0x0000000073D50000-0x0000000074301000-memory.dmp

Filesize
5.7MB

Download
memory/4800-0-0x0000000001950000-0x0000000001951000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads