wannacry | e4af1ebf407876aecbf749b0146d1a11bff3390194fd3ac42db93ae1bc18abe0

Analysis

max time kernel
150s
max time network
153s
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 01:56

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General

Target

59ccdf3dff49667db156df72b7eae427.dll
Size

5.0MB
MD5

59ccdf3dff49667db156df72b7eae427
SHA1

cc4815d29024d0b86a33e5415ebec08c148ff42a
SHA256

e4af1ebf407876aecbf749b0146d1a11bff3390194fd3ac42db93ae1bc18abe0
SHA512

8f0c165ef1da20dca5d94d2589dd87b5dd52665cc46577abc29b189317cf413c8f5a15a6e09dc7de62f61e82fda0f5c889223fc724df9f435c75db6ba8cdca05

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3271) 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

2064 mssecsvc.exe
3104 mssecsvc.exe
1744 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
2064	mssecsvc.exe
3104	mssecsvc.exe
1744	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 3476 wrote to memory of 4748	3476	rundll32.exe	rundll32.exe
PID 3476 wrote to memory of 4748	3476	rundll32.exe	rundll32.exe
PID 3476 wrote to memory of 4748	3476	rundll32.exe	rundll32.exe
PID 4748 wrote to memory of 2064	4748	rundll32.exe	mssecsvc.exe
PID 4748 wrote to memory of 2064	4748	rundll32.exe	mssecsvc.exe
PID 4748 wrote to memory of 2064	4748	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\59ccdf3dff49667db156df72b7eae427.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3476

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\59ccdf3dff49667db156df72b7eae427.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4748

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2064

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1744

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3104

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
fa1a3e31319a367e1021c123059ec7d5

SHA1
e6ae3b0aecee6ed15022d3f3999e75229ce24a0b

SHA256
7dab9ed566d78212bbc3da8383c23021e0d9675eff762fa281d20bbf50b518ce

SHA512
73873fea73a10bc647a77b5cd5a282570badf7fdfa52ce919cf9d8b85bb96e20bf27b5370baca43d7a284826fcae21b7486c0278e7690e9a252620da80c378e3

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
fa1a3e31319a367e1021c123059ec7d5

SHA1
e6ae3b0aecee6ed15022d3f3999e75229ce24a0b

SHA256
7dab9ed566d78212bbc3da8383c23021e0d9675eff762fa281d20bbf50b518ce

SHA512
73873fea73a10bc647a77b5cd5a282570badf7fdfa52ce919cf9d8b85bb96e20bf27b5370baca43d7a284826fcae21b7486c0278e7690e9a252620da80c378e3

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
fa1a3e31319a367e1021c123059ec7d5

SHA1
e6ae3b0aecee6ed15022d3f3999e75229ce24a0b

SHA256
7dab9ed566d78212bbc3da8383c23021e0d9675eff762fa281d20bbf50b518ce

SHA512
73873fea73a10bc647a77b5cd5a282570badf7fdfa52ce919cf9d8b85bb96e20bf27b5370baca43d7a284826fcae21b7486c0278e7690e9a252620da80c378e3

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
415c14675a1b3d14402b237a86218699

SHA1
e7712d4b4775839cc335a41e096684bc8f4e2430

SHA256
1e4c70ed80729fc6ce1f12ca233f91744a94f6f067659faf298f92305d145859

SHA512
1c491979a6c92e870a9335ba157d9c56d0d83bf6200aa6a06b78ed2b92f07fdbf5cac6b36a8cb1d1d225ebe80c48a96f0ed0e7ec5c138f0da028c1b46897ad29

Download Submit
memory/2064-132-0x0000000000000000-mapping.dmp

Download
memory/4748-131-0x0000000000000000-mapping.dmp

Download