wannacry | 682a18a241d9b0430472694cd5822e14165b6d343ef46247d266e724f4c5ced2

Analysis

max time kernel
149s
max time network
152s
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 00:41

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General

Target

ae35c36bea9319e3456f00994d49c955.dll
Size

5.0MB
MD5

ae35c36bea9319e3456f00994d49c955
SHA1

930ffa486221f212895d298eeb9c7e98d3303810
SHA256

682a18a241d9b0430472694cd5822e14165b6d343ef46247d266e724f4c5ced2
SHA512

b492e9a61530b41149d9def1c30f5b61e0ba4d12952e608cb9e8798a3e4169ae67264e40ba50d7d77dc601f3a172aa735277e450de9703b83dca3576b7ea08ac

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3299) 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

5000 mssecsvc.exe
4388 mssecsvc.exe
1516 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
5000	mssecsvc.exe
4388	mssecsvc.exe
1516	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
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
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4952 wrote to memory of 4988	4952	rundll32.exe	rundll32.exe
PID 4952 wrote to memory of 4988	4952	rundll32.exe	rundll32.exe
PID 4952 wrote to memory of 4988	4952	rundll32.exe	rundll32.exe
PID 4988 wrote to memory of 5000	4988	rundll32.exe	mssecsvc.exe
PID 4988 wrote to memory of 5000	4988	rundll32.exe	mssecsvc.exe
PID 4988 wrote to memory of 5000	4988	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ae35c36bea9319e3456f00994d49c955.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4952

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ae35c36bea9319e3456f00994d49c955.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4988

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:5000

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1516

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4388

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
17156cdc3d6c5e68be202aecf2e7c419

SHA1
ea9e39a5463ae1c55d9f659a0b706d3d516462d2

SHA256
bd3f0154d4299e0708b3e32b0d440546725a6abf856b4392299b44946a94fbea

SHA512
740ed7123d10fd91f1e4623356ca0addddce2a3c8fae23cafd821890ec5d25dee599bb6dbb8858b479e1c4fa2af7c16f49d0cae324763c559c080e1940de1c0c

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
17156cdc3d6c5e68be202aecf2e7c419

SHA1
ea9e39a5463ae1c55d9f659a0b706d3d516462d2

SHA256
bd3f0154d4299e0708b3e32b0d440546725a6abf856b4392299b44946a94fbea

SHA512
740ed7123d10fd91f1e4623356ca0addddce2a3c8fae23cafd821890ec5d25dee599bb6dbb8858b479e1c4fa2af7c16f49d0cae324763c559c080e1940de1c0c

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
17156cdc3d6c5e68be202aecf2e7c419

SHA1
ea9e39a5463ae1c55d9f659a0b706d3d516462d2

SHA256
bd3f0154d4299e0708b3e32b0d440546725a6abf856b4392299b44946a94fbea

SHA512
740ed7123d10fd91f1e4623356ca0addddce2a3c8fae23cafd821890ec5d25dee599bb6dbb8858b479e1c4fa2af7c16f49d0cae324763c559c080e1940de1c0c

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
84a3bcc88e986e51b09336dec5cdf70f

SHA1
0055217de8cc80a341c4950607f8e1a2ec49f75e

SHA256
bff5fa6cf223b458a703d6a2acdb1977a455d99dbeae5c05fe7f23f069bcbc61

SHA512
70de79a19dc48c6d6d598acffd8b7b0095e458ffa1c31e2c6e4ee3d907716e9ea1b72c438ab64da74957127cd21cce0d4a3d432f1dabf66c5b9fd2286eb7593a

Download Submit
memory/4988-130-0x0000000000000000-mapping.dmp

Download
memory/5000-131-0x0000000000000000-mapping.dmp

Download