netwire | 482a6a0bf95d313de664dec7523d7487995d5f26e1a30b8bc62c0a5e1431fbd7

General

Target
02_file.exe
Size 2.0MB
Sample201104-yavfxphfrx
SHA256 482a6a0bf95d313de664dec7523d7487995d5f26e1a30b8bc62c0a5e1431fbd7
MD5 9c0973c401f84fdbf24404a4cc2cf812
SHA1 b15bdd7623c1bdd0713be7597930b48c81b85aae
SHA512 fffced9b909cd0ac1f21493c2486c528f09930ae8d83aa25b784e9534172cde5ba3fdec78a6e674ba3134a1d66830d05028dd8c2006074d3b6a2f492f6f2e401
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\\02_file.exe\""	02_file.exe

NetWire RAT payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/764-9-0x000000000040242D-mapping.dmp	netwire
behavioral2/memory/764-8-0x0000000000400000-0x0000000000434000-memory.dmp	netwire
behavioral2/memory/764-10-0x0000000000400000-0x0000000000434000-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	02_file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	02_file.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\02_file.exe	02_file.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\02_file.exe	02_file.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\02_file.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\02_file.exe"	02_file.exe
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\\02_file.exe"	02_file.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	02_file.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	02_file.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 9 IoCs

pid	Process
4648	02_file.exe
4648	02_file.exe
4648	02_file.exe
4648	02_file.exe
4648	02_file.exe
4648	02_file.exe
4648	02_file.exe
4648	02_file.exe
4648	02_file.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4648 set thread context of 764	4648	02_file.exe	76

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4236	4648	WerFault.exe	67

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
4648	02_file.exe
4648	02_file.exe
4648	02_file.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe
4236	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4648	02_file.exe
Token: SeRestorePrivilege	4236	WerFault.exe
Token: SeBackupPrivilege	4236	WerFault.exe
Token: SeDebugPrivilege	4236	WerFault.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76
PID 4648 wrote to memory of 764	4648	02_file.exe	76

C:\Users\Admin\AppData\Local\Temp\02_file.exe
"C:\Users\Admin\AppData\Local\Temp\02_file.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:4648
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  PID:764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4648 -s 1328
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4236