netwire | b3a38651e8b31844393d1252c7a78aac1eda5656c94ff93f17062c66cc961ac3

General

Target

02_extracted.exe
Size

249KB
MD5

616c9a9f34da87b771f7aa1533b4d7c7
SHA1

35b7dc70fe7ea8bba8284352bad4f937d3541caf
SHA256

b3a38651e8b31844393d1252c7a78aac1eda5656c94ff93f17062c66cc961ac3
SHA512

d8a5ec2e0b4eb5c008defb883c7423288fe9119ca9ed70fbfc06b35a616ab48f95bf758802485a08296a7d8cb0836bdde0a3bb86cca979bcd783b091af6e19a4

Score

10^/10

netwire botnet evasion persistence rat stealer

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

02_extracted.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Local\\Temp\\02_extracted.exe\""	02_extracted.exe

NetWire RAT payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1016-11-0x0000000000400000-0x0000000000462000-memory.dmp	netwire
behavioral2/memory/1016-12-0x000000000040242D-mapping.dmp	netwire
behavioral2/memory/1016-13-0x0000000000400000-0x0000000000462000-memory.dmp	netwire

Netwire
Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.
botnet stealer netwire
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

02_extracted.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	02_extracted.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	02_extracted.exe

Drops startup file 2 IoCs

Processes:

02_extracted.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\02_extracted.exe	02_extracted.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\02_extracted.exe	02_extracted.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

02_extracted.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\<Unknown> = "C:\\Users\\Admin\\AppData\\Local\\Temp\\02_extracted.exe"	02_extracted.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\02_extracted.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\02_extracted.exe"	02_extracted.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

02_extracted.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	02_extracted.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	02_extracted.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 15 IoCs

Processes:

02_extracted.exe

pid	process
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

02_extracted.exe

description pid process target process

PID 644 set thread context of 1016 644 02_extracted.exe aspnet_wp.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2240 644 WerFault.exe 02_extracted.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3344 timeout.exe

description	pid	process	target process
PID 644 set thread context of 1016	644	02_extracted.exe	aspnet_wp.exe

pid	pid_target	process	target process
2240	644	WerFault.exe	02_extracted.exe

pid	process
3344	timeout.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

Processes:

02_extracted.exeWerFault.exe

pid	process
644	02_extracted.exe
644	02_extracted.exe
644	02_extracted.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe
2240	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

02_extracted.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	644	02_extracted.exe
Token: SeRestorePrivilege	2240	WerFault.exe
Token: SeBackupPrivilege	2240	WerFault.exe
Token: SeDebugPrivilege	2240	WerFault.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

02_extracted.execmd.exe

description	pid	process	target process
PID 644 wrote to memory of 2996	644	02_extracted.exe	cmd.exe
PID 644 wrote to memory of 2996	644	02_extracted.exe	cmd.exe
PID 644 wrote to memory of 2996	644	02_extracted.exe	cmd.exe
PID 2996 wrote to memory of 3344	2996	cmd.exe	timeout.exe
PID 2996 wrote to memory of 3344	2996	cmd.exe	timeout.exe
PID 2996 wrote to memory of 3344	2996	cmd.exe	timeout.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe
PID 644 wrote to memory of 1016	644	02_extracted.exe	aspnet_wp.exe

C:\Users\Admin\AppData\Local\Temp\02_extracted.exe
"C:\Users\Admin\AppData\Local\Temp\02_extracted.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Drops startup file
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:644

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 4.698
2⤵
- Suspicious use of WriteProcessMemory
PID:2996

C:\Windows\SysWOW64\timeout.exe
timeout 4.698
3⤵
- Delays execution with timeout.exe
PID:3344

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
2⤵
PID:1016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 644 -s 2156
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2240

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

2

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/644-9-0x000000000B520000-0x000000000B66E000-memory.dmp

Filesize
1.3MB

Download
memory/644-3-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download
memory/644-5-0x0000000005240000-0x0000000005241000-memory.dmp

Filesize
4KB

Download
memory/644-2-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/644-10-0x00000000081E0000-0x00000000081E1000-memory.dmp

Filesize
4KB

Download
memory/644-8-0x000000000BA20000-0x000000000BA21000-memory.dmp

Filesize
4KB

Download
memory/1016-12-0x000000000040242D-mapping.dmp

Download
memory/1016-11-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1016-13-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2240-14-0x0000000004BF0000-0x0000000004BF1000-memory.dmp

Filesize
4KB

Download
memory/2240-15-0x0000000004FF0000-0x0000000004FF1000-memory.dmp

Filesize
4KB

Download
memory/2240-16-0x00000000053F0000-0x00000000053F1000-memory.dmp

Filesize
4KB

Download
memory/2996-6-0x0000000000000000-mapping.dmp

Download
memory/3344-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads