wannacry | 8180c3a1d85eb680ad72e37ab4cfd3e6a05989f79e4e90fcb667a2a0a6747f20

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 02:02

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General

Target

886809697ae694d0d6806849caf0ff77.dll
Size

5.0MB
MD5

886809697ae694d0d6806849caf0ff77
SHA1

43b8a5470b9f0faa2cb53ac01c2fca76d7d24197
SHA256

8180c3a1d85eb680ad72e37ab4cfd3e6a05989f79e4e90fcb667a2a0a6747f20
SHA512

8864d5a5417986c503aa0a75350331456c0304475279b9612ee3d554955ad12514d4a2bc69f068208d6f5a4965207a531c381f38842bbb624722e3b51d426115

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3338) 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 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1200 mssecsvc.exe
2352 mssecsvc.exe
3144 tasksche.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

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

pid	process
1200	mssecsvc.exe
2352	mssecsvc.exe
3144	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvc.exe

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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 5112 wrote to memory of 1876	5112	rundll32.exe	rundll32.exe
PID 5112 wrote to memory of 1876	5112	rundll32.exe	rundll32.exe
PID 5112 wrote to memory of 1876	5112	rundll32.exe	rundll32.exe
PID 1876 wrote to memory of 1200	1876	rundll32.exe	mssecsvc.exe
PID 1876 wrote to memory of 1200	1876	rundll32.exe	mssecsvc.exe
PID 1876 wrote to memory of 1200	1876	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\886809697ae694d0d6806849caf0ff77.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5112

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\886809697ae694d0d6806849caf0ff77.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1876

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1200

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3144

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2352

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

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe

Filesize
3.6MB

MD5
bfdfc78add532cfc5a9b745e932764e0

SHA1
64d785d026dc56b0dec2354876b516b63d0f8d24

SHA256
6578b616f4ccc579e5a98e2004992dbc90ff604f9a02919fda214e6cedc890c2

SHA512
f83aef15eb0727f62bac8488dcb456cd0113d470cf970074b63427e6df46440a331146a014808278c033bd147268a93856556833ed8e88a88436247f3c5b7bd4

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
bfdfc78add532cfc5a9b745e932764e0

SHA1
64d785d026dc56b0dec2354876b516b63d0f8d24

SHA256
6578b616f4ccc579e5a98e2004992dbc90ff604f9a02919fda214e6cedc890c2

SHA512
f83aef15eb0727f62bac8488dcb456cd0113d470cf970074b63427e6df46440a331146a014808278c033bd147268a93856556833ed8e88a88436247f3c5b7bd4

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
bfdfc78add532cfc5a9b745e932764e0

SHA1
64d785d026dc56b0dec2354876b516b63d0f8d24

SHA256
6578b616f4ccc579e5a98e2004992dbc90ff604f9a02919fda214e6cedc890c2

SHA512
f83aef15eb0727f62bac8488dcb456cd0113d470cf970074b63427e6df46440a331146a014808278c033bd147268a93856556833ed8e88a88436247f3c5b7bd4

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
86284217d4ad63d8e8dc0f74b49ef906

SHA1
04832f2488b05b4d58697a30c60959103e8b93cf

SHA256
6206c27b3bd0ada880b9b5dabcc45465ca84fe53d146486d785fb5e5a02943ca

SHA512
df7003adcf0ff971cd4d3a336dae651fc341486246da29c9f5e60759c9ac15d6bf0d959c122ed7ad3d613f07f0454ebf63a5af9fce5604e0188fe71db6b3d2db

Download Submit
memory/1200-131-0x0000000000000000-mapping.dmp

Download
memory/1876-130-0x0000000000000000-mapping.dmp

Download