netwire | 77256dbd8c0a417df262ad441056cc29c4ee5a70a9005b2fa4f32efbec768083

Analysis

max time kernel
122s
max time network
130s
platform
windows10_x64
resource
win10-en-20211014
submitted
03/11/2021, 10:17

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General

Target
3wLErjZm74CL9UB.exe
Size 599KB
Sample211103-mbdejsafhl
SHA256 77256dbd8c0a417df262ad441056cc29c4ee5a70a9005b2fa4f32efbec768083
MD5 e3cdf4e912503638d5b738447cf025ea
SHA1 b4eeda6860e62ff4cb48184d1312df126a40aee8
SHA512 4b60f8e0aced27a0a5670a26ba44e29a57a2ea9e9cea603760ea166443ec056f38a782a051e678afc4e5c07c76cd2c110edda87368378d7e21872164d77b6133
MD5 SHA1 SHA512

Score

10^/10

netwire botnet persistence rat stealer

Malware Config

Extracted

Family

netwire

23.105.131.227:3360

Attributes

activex_autorun
false
activex_key
copy_executable
true
delete_original
false
host_id
HostId-%Rand%
install_path
%AppData%\Install\Host.exe
keylogger_dir
lock_executable
false
mutex
offline_keylogger
false
password
Password
registry_autorun
true
startup_name
NetWire
use_mutex
false

Signatures

NetWire RAT payload 6 IoCs

rat

resource	yara_rule
behavioral2/memory/812-125-0x0000000000400000-0x0000000000433000-memory.dmp	netwire
behavioral2/memory/812-126-0x000000000040242D-mapping.dmp	netwire
behavioral2/memory/812-127-0x0000000000400000-0x0000000000433000-memory.dmp	netwire
behavioral2/memory/3768-137-0x0000000004930000-0x0000000004E2E000-memory.dmp	netwire
behavioral2/memory/848-142-0x000000000040242D-mapping.dmp	netwire
behavioral2/memory/848-144-0x0000000000400000-0x0000000000433000-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

Executes dropped EXE 2 IoCs

pid	Process
3768	Host.exe
848	Host.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	Host.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\NetWire = "C:\\Users\\Admin\\AppData\\Roaming\\Install\\Host.exe"	Host.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2800 set thread context of 812	2800	3wLErjZm74CL9UB.exe	73
PID 3768 set thread context of 848	3768	Host.exe	78

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2880	schtasks.exe
776	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2800	3wLErjZm74CL9UB.exe
2800	3wLErjZm74CL9UB.exe
2800	3wLErjZm74CL9UB.exe
2800	3wLErjZm74CL9UB.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2800	3wLErjZm74CL9UB.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2800 wrote to memory of 2880	2800	3wLErjZm74CL9UB.exe	69
PID 2800 wrote to memory of 2880	2800	3wLErjZm74CL9UB.exe	69
PID 2800 wrote to memory of 2880	2800	3wLErjZm74CL9UB.exe	69
PID 2800 wrote to memory of 1484	2800	3wLErjZm74CL9UB.exe	71
PID 2800 wrote to memory of 1484	2800	3wLErjZm74CL9UB.exe	71
PID 2800 wrote to memory of 1484	2800	3wLErjZm74CL9UB.exe	71
PID 2800 wrote to memory of 1052	2800	3wLErjZm74CL9UB.exe	72
PID 2800 wrote to memory of 1052	2800	3wLErjZm74CL9UB.exe	72
PID 2800 wrote to memory of 1052	2800	3wLErjZm74CL9UB.exe	72
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 2800 wrote to memory of 812	2800	3wLErjZm74CL9UB.exe	73
PID 812 wrote to memory of 3768	812	3wLErjZm74CL9UB.exe	74
PID 812 wrote to memory of 3768	812	3wLErjZm74CL9UB.exe	74
PID 812 wrote to memory of 3768	812	3wLErjZm74CL9UB.exe	74
PID 3768 wrote to memory of 776	3768	Host.exe	77
PID 3768 wrote to memory of 776	3768	Host.exe	77
PID 3768 wrote to memory of 776	3768	Host.exe	77
PID 3768 wrote to memory of 848	3768	Host.exe	78
PID 3768 wrote to memory of 848	3768	Host.exe	78
PID 3768 wrote to memory of 848	3768	Host.exe	78
PID 3768 wrote to memory of 848	3768	Host.exe	78
PID 3768 wrote to memory of 848	3768	Host.exe	78
PID 3768 wrote to memory of 848	3768	Host.exe	78
PID 3768 wrote to memory of 848	3768	Host.exe	78
PID 3768 wrote to memory of 848	3768	Host.exe	78
PID 3768 wrote to memory of 848	3768	Host.exe	78
PID 3768 wrote to memory of 848	3768	Host.exe	78
PID 3768 wrote to memory of 848	3768	Host.exe	78

C:\Users\Admin\AppData\Local\Temp\3wLErjZm74CL9UB.exe
"C:\Users\Admin\AppData\Local\Temp\3wLErjZm74CL9UB.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2800
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LkgkUFcmpajn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp96AE.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2880
- C:\Users\Admin\AppData\Local\Temp\3wLErjZm74CL9UB.exe
  "C:\Users\Admin\AppData\Local\Temp\3wLErjZm74CL9UB.exe"
  2⤵
  PID:1484
- C:\Users\Admin\AppData\Local\Temp\3wLErjZm74CL9UB.exe
  "C:\Users\Admin\AppData\Local\Temp\3wLErjZm74CL9UB.exe"
  2⤵
  PID:1052
- C:\Users\Admin\AppData\Local\Temp\3wLErjZm74CL9UB.exe
  "C:\Users\Admin\AppData\Local\Temp\3wLErjZm74CL9UB.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:812
- - C:\Users\Admin\AppData\Roaming\Install\Host.exe
    "C:\Users\Admin\AppData\Roaming\Install\Host.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3768
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LkgkUFcmpajn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp43D6.tmp"
      4⤵
      Creates scheduled task(s)
      PID:776
  - - C:\Users\Admin\AppData\Roaming\Install\Host.exe
      "C:\Users\Admin\AppData\Roaming\Install\Host.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      PID:848

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/812-125-0x0000000000400000-0x0000000000433000-memory.dmp

Download

memory/812-127-0x0000000000400000-0x0000000000433000-memory.dmp

Download

memory/848-144-0x0000000000400000-0x0000000000433000-memory.dmp

Download

memory/2800-121-0x00000000053A0000-0x00000000053A7000-memory.dmp

Download

memory/2800-123-0x0000000008840000-0x000000000888C000-memory.dmp

Download

memory/2800-122-0x0000000008890000-0x0000000008891000-memory.dmp

Download

memory/2800-115-0x00000000005C0000-0x00000000005C1000-memory.dmp

Download

memory/2800-120-0x0000000004FF0000-0x0000000004FF1000-memory.dmp

Download

memory/2800-119-0x0000000004F30000-0x000000000542E000-memory.dmp

Download

memory/2800-118-0x0000000005000000-0x0000000005001000-memory.dmp

Download

memory/2800-117-0x0000000005430000-0x0000000005431000-memory.dmp

Download

memory/3768-137-0x0000000004930000-0x0000000004E2E000-memory.dmp

Download