njrat | 780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67

Analysis

max time kernel
119s
max time network
115s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18/12/2024, 03:50

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General

Target
780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
Size 1.2MB
Sample241218-eebfcstkbn
SHA256 780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67
MD5 d79687d0ecfda782cb48b6cd26c05fa0
SHA1 f98c4a59da3b3cbb4e5f0ff0fceed556b92f2bb6
SHA512 ef68393f59f45dac25f9b4e0d59350adb8f5e29d206289fc39a73b750c7825e94f9aa0b6b7839cf5234e295d091ded70f91c7427dacea3d3637701e126bf6400
SSDEEP 24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95L:Jh+ZkldoPK8YaW7CaZ7IHL
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat redlanhopto discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

redlanhopto

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
2792	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2912	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0009000000016cc8-14.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1352 set thread context of 2800	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	31
PID 2912 set thread context of 2548	2912	data.exe	39

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 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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.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
2188	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
2912	data.exe
2912	data.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe
Token: 33	2800	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2800	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
2912	data.exe
2912	data.exe
2912	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
2912	data.exe
2912	data.exe
2912	data.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 2800	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	31
PID 1352 wrote to memory of 2800	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	31
PID 1352 wrote to memory of 2800	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	31
PID 1352 wrote to memory of 2800	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	31
PID 1352 wrote to memory of 2800	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	31
PID 1352 wrote to memory of 2800	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	31
PID 1352 wrote to memory of 2800	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	31
PID 1352 wrote to memory of 2800	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	31
PID 1352 wrote to memory of 2800	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	31
PID 2800 wrote to memory of 2792	2800	RegAsm.exe	32
PID 2800 wrote to memory of 2792	2800	RegAsm.exe	32
PID 2800 wrote to memory of 2792	2800	RegAsm.exe	32
PID 2800 wrote to memory of 2792	2800	RegAsm.exe	32
PID 1352 wrote to memory of 2188	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	35
PID 1352 wrote to memory of 2188	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	35
PID 1352 wrote to memory of 2188	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	35
PID 1352 wrote to memory of 2188	1352	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	35
PID 1932 wrote to memory of 2912	1932	taskeng.exe	38
PID 1932 wrote to memory of 2912	1932	taskeng.exe	38
PID 1932 wrote to memory of 2912	1932	taskeng.exe	38
PID 1932 wrote to memory of 2912	1932	taskeng.exe	38
PID 2912 wrote to memory of 2548	2912	data.exe	39
PID 2912 wrote to memory of 2548	2912	data.exe	39
PID 2912 wrote to memory of 2548	2912	data.exe	39
PID 2912 wrote to memory of 2548	2912	data.exe	39
PID 2912 wrote to memory of 2548	2912	data.exe	39
PID 2912 wrote to memory of 2548	2912	data.exe	39
PID 2912 wrote to memory of 2548	2912	data.exe	39
PID 2912 wrote to memory of 2548	2912	data.exe	39
PID 2912 wrote to memory of 2548	2912	data.exe	39

C:\Users\Admin\AppData\Local\Temp\780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
"C:\Users\Admin\AppData\Local\Temp\780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.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:1352
- 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:2800
- - 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:2792
- 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:2188

C:\Windows\system32\taskeng.exe
taskeng.exe {FBD8FB0D-0849-4E29-B97E-E9784410C992} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
  C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
  2⤵
  - 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:2912
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

data.exe

Path C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
Size 1.2MB
SHA256 c244a32019ac2e90cfc90ea66eeaeb0f3f60cbecad5198c4b51b1594b87f16d9
MD5 8f766d4c848f607b49d51aeb7fbd65cd
SHA1 27596519a47f3a2f7410f3221c6e18e31047cda8
SHA512 3bac8605a3ef28b2c66338c6615132ede90e238b02357d7d97edc4e54884330c3070b793593ed534fe27e6074c40ed34a44e7f2fc9de2913145853b5c303b1db
SSDEEP 24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95M:Jh+ZkldoPK8YaW7CaZ7IHM
MD5 SHA1 SHA512 SSDEEP

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memory/1352-0-0x00000000000B0000-0x00000000000B1000-memory.dmp

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memory/2548-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2800-2-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2800-9-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2800-8-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2800-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2800-1-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2800-10-0x0000000074492000-0x0000000074494000-memory.dmp

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memory/2800-11-0x0000000074492000-0x0000000074494000-memory.dmp

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