wannacry | 60b39d34b2089438db05f612a11f09e14fea05317ca2b4eb4f992b5be4d61103

Analysis

max time kernel
151s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
20/07/2022, 03:09

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General

Target
6f29a203db474387de92d49a331325ab.dll
Size 5.0MB
Sample220720-dnghasbca5
SHA256 60b39d34b2089438db05f612a11f09e14fea05317ca2b4eb4f992b5be4d61103
MD5 6f29a203db474387de92d49a331325ab
SHA1 6cd0bfb71185d3f1f5418914544be86d176014bf
SHA512 e5dbd692b871947114a4616bff2665b77e8620b80c8a61f2809b1735d6897c7e59a832f5add5b3dee7b209a98a34f8ea704b019941f2249d87980d7e51d7646d
MD5 SHA1 SHA512

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3240) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046

Executes dropped EXE 2 IoCs

pid	Process
4704	mssecsvr.exe
2472	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 Scanning
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\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
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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 4392	3000	rundll32.exe	83
PID 3000 wrote to memory of 4392	3000	rundll32.exe	83
PID 3000 wrote to memory of 4392	3000	rundll32.exe	83
PID 4392 wrote to memory of 4704	4392	rundll32.exe	84
PID 4392 wrote to memory of 4704	4392	rundll32.exe	84
PID 4392 wrote to memory of 4704	4392	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6f29a203db474387de92d49a331325ab.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6f29a203db474387de92d49a331325ab.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4392
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4704

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2472

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mssecsvr.exe

Path C:\WINDOWS\mssecsvr.exe
Size 2.2MB
SHA256 dc75f3f32a7fa212ee02005ca224474e2d615e6eca1af62472703e74494fe4de
MD5 964bdee2f9be8be8d589fd8c5006130c
SHA1 d52a0e4e92429650dca67c6ed4db09bddacad690
SHA512 19d0928d76b509844277f399d851399e9e3d81554efbc2d311328e7a50f492f77ea1f72a8c6ae50c836caecad2eae6cfe21ea061862c66451f56bbd8b86e8051
SSDEEP 49152:QnlMSPbcBVQej/1IN4+TSqTdX1HkQPMLRdhnvn:QlPoBhz1a4cSUDkDldhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 dc75f3f32a7fa212ee02005ca224474e2d615e6eca1af62472703e74494fe4de
MD5 964bdee2f9be8be8d589fd8c5006130c
SHA1 d52a0e4e92429650dca67c6ed4db09bddacad690
SHA512 19d0928d76b509844277f399d851399e9e3d81554efbc2d311328e7a50f492f77ea1f72a8c6ae50c836caecad2eae6cfe21ea061862c66451f56bbd8b86e8051
SSDEEP 49152:QnlMSPbcBVQej/1IN4+TSqTdX1HkQPMLRdhnvn:QlPoBhz1a4cSUDkDldhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 dc75f3f32a7fa212ee02005ca224474e2d615e6eca1af62472703e74494fe4de
MD5 964bdee2f9be8be8d589fd8c5006130c
SHA1 d52a0e4e92429650dca67c6ed4db09bddacad690
SHA512 19d0928d76b509844277f399d851399e9e3d81554efbc2d311328e7a50f492f77ea1f72a8c6ae50c836caecad2eae6cfe21ea061862c66451f56bbd8b86e8051
SSDEEP 49152:QnlMSPbcBVQej/1IN4+TSqTdX1HkQPMLRdhnvn:QlPoBhz1a4cSUDkDldhvn
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads