netwire | 0df2eaf3f216575fde216ea22e4a56d352d14f78b0fcc3453799bd9563053899

General

Target
Quote Request.exe
Size 1.6MB
Sample201107-jdyfwcmdqs
SHA256 0df2eaf3f216575fde216ea22e4a56d352d14f78b0fcc3453799bd9563053899
MD5 f26a1c1ddecc627aa2f4704fcb977304
SHA1 c7ac0b941a26a1614153e87420b39263bce541e0
SHA512 7b899d4c6e25cb80caf91bfc902b6977694f591728689deba6bca1d89bf3cde99c60e9abed8820c4fe87390e1fc96556a0e8e07267579a6447689b4e19c2a639
MD5 SHA1 SHA512

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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Quote Request.exe\""	Quote Request.exe

NetWire RAT payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/1728-9-0x0000000000400000-0x0000000000434000-memory.dmp	netwire
behavioral2/memory/1728-10-0x000000000040242D-mapping.dmp	netwire
behavioral2/memory/1728-11-0x0000000000400000-0x0000000000434000-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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Quote Request.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Quote Request.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Quote Request.exe	Quote Request.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Quote Request.exe	Quote Request.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\<Unknown> = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Quote Request.exe"	Quote Request.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\Quote Request.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Quote Request.exe"	Quote Request.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Quote Request.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	Quote Request.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 9 IoCs

pid	Process
3988	Quote Request.exe
3988	Quote Request.exe
3988	Quote Request.exe
3988	Quote Request.exe
3988	Quote Request.exe
3988	Quote Request.exe
3988	Quote Request.exe
3988	Quote Request.exe
3988	Quote Request.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3988 set thread context of 1728	3988	Quote Request.exe	80

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3996	3988	WerFault.exe	68

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
3988	Quote Request.exe
3988	Quote Request.exe
3988	Quote Request.exe
3988	Quote Request.exe
3988	Quote Request.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3988	Quote Request.exe
Token: SeRestorePrivilege	3996	WerFault.exe
Token: SeBackupPrivilege	3996	WerFault.exe
Token: SeDebugPrivilege	3996	WerFault.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 1740	3988	Quote Request.exe	79
PID 3988 wrote to memory of 1740	3988	Quote Request.exe	79
PID 3988 wrote to memory of 1740	3988	Quote Request.exe	79
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80
PID 3988 wrote to memory of 1728	3988	Quote Request.exe	80

C:\Users\Admin\AppData\Local\Temp\Quote Request.exe
"C:\Users\Admin\AppData\Local\Temp\Quote Request.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:3988
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  PID:1740
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  PID:1728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3988 -s 1368
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3996