wannacry | 78ecdd4f9eb36ea0463a549c4124b10bbb0fdf9be76d137737de08d701fd25d5

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
20/07/2022, 01:07

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General

Target
9d709394669a9a07f5e759148968d465.dll
Size 5.0MB
Sample220720-bgm1dsaaa3
SHA256 78ecdd4f9eb36ea0463a549c4124b10bbb0fdf9be76d137737de08d701fd25d5
MD5 9d709394669a9a07f5e759148968d465
SHA1 9a4416b56f18112b0694befc7c38f841c73f7c7a
SHA512 f0dfed6fb68b28ea39e18977bf821ce812f7034bfcc95661c6b71581389aee58ed9ec0872e8ae6029ff3c2ff75778d9bd0b24dcfbc6a6782724c9f2f1b9fbd5b
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 (3258) 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
4660	mssecsvr.exe
2040	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 620 wrote to memory of 2336	620	rundll32.exe	75
PID 620 wrote to memory of 2336	620	rundll32.exe	75
PID 620 wrote to memory of 2336	620	rundll32.exe	75
PID 2336 wrote to memory of 4660	2336	rundll32.exe	76
PID 2336 wrote to memory of 4660	2336	rundll32.exe	76
PID 2336 wrote to memory of 4660	2336	rundll32.exe	76

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d709394669a9a07f5e759148968d465.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:620
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d709394669a9a07f5e759148968d465.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4660

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2040

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 2217c0bc7ec7e494cf553f111ac9ab2914699c2d955a4e6a0f182c24abbd6a34
MD5 0830d3b071fd2284fe81ba31a23a3f42
SHA1 6131eeb47e682e89e06a3b248003c9e70d28f8b6
SHA512 a10758273f8ab12674de82100ee8111053d72da452d38b1815c94b502049196858308ca7b4147fd486f7f8dec0e218d227b7f3cc1d612a86df2fe1f03260b464
SSDEEP 24576:QbLgurihdmMSirYbcMNgef0tLKz6626M+vbOSSqTPCeX6SASk+RdhAdmvn:QnnMSPbcBVtRx+TSqTT6SAARdhnvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 2217c0bc7ec7e494cf553f111ac9ab2914699c2d955a4e6a0f182c24abbd6a34
MD5 0830d3b071fd2284fe81ba31a23a3f42
SHA1 6131eeb47e682e89e06a3b248003c9e70d28f8b6
SHA512 a10758273f8ab12674de82100ee8111053d72da452d38b1815c94b502049196858308ca7b4147fd486f7f8dec0e218d227b7f3cc1d612a86df2fe1f03260b464
SSDEEP 24576:QbLgurihdmMSirYbcMNgef0tLKz6626M+vbOSSqTPCeX6SASk+RdhAdmvn:QnnMSPbcBVtRx+TSqTT6SAARdhnvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 2217c0bc7ec7e494cf553f111ac9ab2914699c2d955a4e6a0f182c24abbd6a34
MD5 0830d3b071fd2284fe81ba31a23a3f42
SHA1 6131eeb47e682e89e06a3b248003c9e70d28f8b6
SHA512 a10758273f8ab12674de82100ee8111053d72da452d38b1815c94b502049196858308ca7b4147fd486f7f8dec0e218d227b7f3cc1d612a86df2fe1f03260b464
SSDEEP 24576:QbLgurihdmMSirYbcMNgef0tLKz6626M+vbOSSqTPCeX6SASk+RdhAdmvn:QnnMSPbcBVtRx+TSqTT6SAARdhnvn
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