netwire | e83b81147f0b08a09751772c75cdec2522f2fce19b1f035a2ddc415f633dd2e0

General

Target
5976230.exe
Size 342KB
Sample220218-rl9yqacfa5
SHA256 e83b81147f0b08a09751772c75cdec2522f2fce19b1f035a2ddc415f633dd2e0
MD5 1c87b7bb26836a82f5597f96598829c8
SHA1 579087fc5e71649bd6d6571dce64fa3274de9e75
SHA512 5c07ee0cac2d3959368910ac0b1e124f456c2e50a3af2537e964477658ecdf8798dfc50f59d393986ea904e09b9c8a83ee09e429b6af247cd908e60d98dc8844
MD5 SHA1 SHA512

Score

10^/10

netwire botnet persistence rat stealer

Malware Config

Extracted

Family

netwire

C2

194.147.140.14:3360

Attributes

activex_autorun
false
activex_key
copy_executable
false
delete_original
false
host_id
HostId-%Rand%
install_path
%AppData%\Install\Host.exe
keylogger_dir
lock_executable
false
mutex
EsHLnAmk
offline_keylogger
false
password
Password
registry_autorun
false
startup_name
u�M�'`�5<��2b
use_mutex
false

Signatures

NetWire RAT payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/1628-134-0x0000000000400000-0x0000000000444000-memory.dmp	netwire
behavioral2/memory/1628-137-0x0000000000400000-0x0000000000444000-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

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 4816 created 1156	4816	WerFault.exe	87

Executes dropped EXE 3 IoCs

pid	Process
3648	favlo.exe
1628	favlo.exe
1156	Host.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	favlo.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wgcuadiiscpbfp = "C:\\Users\\Admin\\AppData\\Roaming\\vremjsjmpfbor\\iybybvq.exe"	favlo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3648 set thread context of 1628	3648	favlo.exe	86

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1580	1156	WerFault.exe	87

Checks processor information in registry 2 TTPs 3 IoCs

Processor 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\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1580	WerFault.exe
1580	WerFault.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeRestorePrivilege	1580	WerFault.exe
Token: SeBackupPrivilege	1580	WerFault.exe
Token: SeShutdownPrivilege	5112	svchost.exe
Token: SeCreatePagefilePrivilege	5112	svchost.exe
Token: SeShutdownPrivilege	5112	svchost.exe
Token: SeCreatePagefilePrivilege	5112	svchost.exe
Token: SeShutdownPrivilege	5112	svchost.exe
Token: SeCreatePagefilePrivilege	5112	svchost.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4316 wrote to memory of 3648	4316	5976230.exe	84
PID 4316 wrote to memory of 3648	4316	5976230.exe	84
PID 4316 wrote to memory of 3648	4316	5976230.exe	84
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 3648 wrote to memory of 1628	3648	favlo.exe	86
PID 1628 wrote to memory of 1156	1628	favlo.exe	87
PID 1628 wrote to memory of 1156	1628	favlo.exe	87
PID 1628 wrote to memory of 1156	1628	favlo.exe	87
PID 4816 wrote to memory of 1156	4816	WerFault.exe	87
PID 4816 wrote to memory of 1156	4816	WerFault.exe	87

C:\Users\Admin\AppData\Local\Temp\5976230.exe
"C:\Users\Admin\AppData\Local\Temp\5976230.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4316
- C:\Users\Admin\AppData\Local\Temp\favlo.exe
  C:\Users\Admin\AppData\Local\Temp\favlo.exe C:\Users\Admin\AppData\Local\Temp\lszjbmaubz
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:3648
- - C:\Users\Admin\AppData\Local\Temp\favlo.exe
    C:\Users\Admin\AppData\Local\Temp\favlo.exe C:\Users\Admin\AppData\Local\Temp\lszjbmaubz
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:1628
  - - C:\Users\Admin\AppData\Roaming\Install\Host.exe
      "C:\Users\Admin\AppData\Roaming\Install\Host.exe"
      4⤵
      Executes dropped EXE
      PID:1156
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1156 -s 468
        5⤵
        Program crash
        Checks processor information in registry
        Enumerates system info in registry
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1156 -ip 1156
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:4816

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:5112

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1628-134-0x0000000000400000-0x0000000000444000-memory.dmp

Download

memory/1628-137-0x0000000000400000-0x0000000000444000-memory.dmp

Download

memory/5112-139-0x000002AE40B80000-0x000002AE40B90000-memory.dmp

Download

memory/5112-140-0x000002AE41220000-0x000002AE41230000-memory.dmp

Download

memory/5112-141-0x000002AE43900000-0x000002AE43904000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads