wannacry | 464e7eba3b108d5e2345dba64a301cae607ade4f3854bb067a506166706794d8

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
02-07-2024 18:52

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General

Target

464e7eba3b108d5e2345dba64a301cae607ade4f3854bb067a506166706794d8.dll
Size

5.0MB
MD5

71bd4a312860c24c970394aba25d2ee4
SHA1

62d9cb05f6342204fa243b49e0460f620c531756
SHA256

464e7eba3b108d5e2345dba64a301cae607ade4f3854bb067a506166706794d8
SHA512

af171a1b9582c072adda6f8cf4b92dc91a40a9cceb53a212fd2905da75f3e4e9640fe3511089c2dd2808c7df6429183a5f8a9c55f5567e0c575f92c7c8db94a2
SSDEEP

24576:RbLgurgDdmMSirYbcMNgef0QeQjGZ6M+vbOSSqTPVXmiH:RnsEMSPbcBVQejl+TSqTdX1H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2696) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 2 IoCs

pid	Process
212	mssecsvr.exe
3512	mssecsvr.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 5012	2196	rundll32.exe	81
PID 2196 wrote to memory of 5012	2196	rundll32.exe	81
PID 2196 wrote to memory of 5012	2196	rundll32.exe	81
PID 5012 wrote to memory of 212	5012	rundll32.exe	82
PID 5012 wrote to memory of 212	5012	rundll32.exe	82
PID 5012 wrote to memory of 212	5012	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\464e7eba3b108d5e2345dba64a301cae607ade4f3854bb067a506166706794d8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\464e7eba3b108d5e2345dba64a301cae607ade4f3854bb067a506166706794d8.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:5012
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:212

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
db4e800452e34eebc2d8751793a34f8c

SHA1
6d3d4ab240604d7ec8f2bceb26e825d250e50359

SHA256
ecf02f7f35c19878a78eb38440dfdb257ca3e859741eea263cedcb34f9450ed9

SHA512
b34f0fdeaf0f8d3b918d732ff965dcde2e77089962e3034ad5bde08fadf39bc73f9f11474263eecbdeffc3672abd706ab9d08907c33c1dc2810c2061088348f1

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