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
2576	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2780	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0034000000016d17-14.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1700 set thread context of 2608	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	30

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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	data.exe
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

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
1496	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
2780	data.exe
2780	data.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
2780	data.exe
2780	data.exe
2780	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
2780	data.exe
2780	data.exe
2780	data.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 2608	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	30
PID 1700 wrote to memory of 2608	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	30
PID 1700 wrote to memory of 2608	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	30
PID 1700 wrote to memory of 2608	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	30
PID 1700 wrote to memory of 2608	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	30
PID 1700 wrote to memory of 2608	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	30
PID 1700 wrote to memory of 2608	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	30
PID 1700 wrote to memory of 2608	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	30
PID 1700 wrote to memory of 2608	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	30
PID 2608 wrote to memory of 2576	2608	RegAsm.exe	31
PID 2608 wrote to memory of 2576	2608	RegAsm.exe	31
PID 2608 wrote to memory of 2576	2608	RegAsm.exe	31
PID 2608 wrote to memory of 2576	2608	RegAsm.exe	31
PID 1700 wrote to memory of 1496	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	34
PID 1700 wrote to memory of 1496	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	34
PID 1700 wrote to memory of 1496	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	34
PID 1700 wrote to memory of 1496	1700	cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe	34
PID 1972 wrote to memory of 2780	1972	taskeng.exe	37
PID 1972 wrote to memory of 2780	1972	taskeng.exe	37
PID 1972 wrote to memory of 2780	1972	taskeng.exe	37
PID 1972 wrote to memory of 2780	1972	taskeng.exe	37

C:\Users\Admin\AppData\Local\Temp\cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.exe
"C:\Users\Admin\AppData\Local\Temp\cc75e40d7bffaa24ac4463d368d1c4990b406995d8fe296614cf0c5135731fbdN.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:1700
- 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:2608
- - 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:2576
- 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:1496

C:\Windows\system32\taskeng.exe
taskeng.exe {67C3ECA4-8482-4521-B447-6511616211AA} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1972
- 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:2780

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
1.2MB

MD5
a9ee707bccfa65d72252a6390cadf69d

SHA1
a25b5ae6f883ed4dfc7056f1da631e7c7308e733

SHA256
625a9f26f1db278f0faeb3e07acce925dc9a3d336ae6473ba53310b59a44e7ed

SHA512
16cef07dacb681aec836367cd63dacc418aea6d718dc8880d67799f5edbd909f0112700adf29b2437b35858e9c21b614fb294a0187d42aef662825a932bc8a52

Download Submit
memory/1700-0-0x0000000000780000-0x0000000000781000-memory.dmp

Filesize
4KB

Download
memory/2608-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2608-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2608-9-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2608-8-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2608-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2608-10-0x0000000073B82000-0x0000000073B84000-memory.dmp

Filesize
8KB

Download
memory/2608-11-0x0000000073B82000-0x0000000073B84000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads