wannacry | fa97baaa08d04807e478688a133076a109a7578c7b4d9be15e96b4de8522807d | Triage

Analysis

max time kernel
150s
max time network
151s
platform
windows10_x64
resource
win10v200722
submitted
18-10-2020 14:01

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General

Target

mssecsvc.exe
Size

3.6MB
MD5

1766d9d4769580c0fab9e6ad5bf73436
SHA1

02eca9f1966819d63d82d62a94c8af3e76041411
SHA256

fa97baaa08d04807e478688a133076a109a7578c7b4d9be15e96b4de8522807d
SHA512

41e36b6a7e0ba4783cd90039cff5e87743cca2e8deee63b62cc0dcb8bab459f1d7919f59275cc266ef1519942ad2386c16791bd9706ee06eb4658f3f86018f50

Score

10^/10

ransomware worm wannacry

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Executes dropped EXE 1 IoCs

Processes:

tasksche.exe

pid process

4036 tasksche.exe

Drops file in System32 directory 7 IoCs

Processes:

mssecsvc.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	mssecsvc.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies\NZF32JEJ.cookie	mssecsvc.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies\NZF32JEJ.cookie	mssecsvc.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\counters2.dat	mssecsvc.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	mssecsvc.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	mssecsvc.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	mssecsvc.exe

Drops file in Windows directory 1 IoCs

Processes:

mssecsvc.exe

description ioc process

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

Modifies data under HKEY_USERS 8 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	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
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
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe

C:\Users\Admin\AppData\Local\Temp\mssecsvc.exe
"C:\Users\Admin\AppData\Local\Temp\mssecsvc.exe"
1⤵
- Drops file in Windows directory
PID:2096

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
2⤵
- Executes dropped EXE
PID:4036

C:\Users\Admin\AppData\Local\Temp\mssecsvc.exe
C:\Users\Admin\AppData\Local\Temp\mssecsvc.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2924

Network

MITRE ATT&CK Matrix

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Downloads

C:\Windows\tasksche.exe
MD5
747cd55009bdbb466a01bd7214fce79d

SHA1
076d78ad4a0f38278e1d39566b9b66b3d2e493e3

SHA256
bcf1ba6140b7ba6f0930780cad1d60ac0751bf9c60e55f13a09f92c1ae9ea5e6

SHA512
4ae1755ce0a248f60855f7cbb40e70250ed42fe0795e4b60c45158319127aabd4fe4d5cb7b82e0f85f8b5734183437203dd9e26ced6150b2115904cdfed4154a

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