wannacry | 82fbd5e91ad1a70839605f4985d6b6be7a5dbada644912119db7a2c25aa294b5

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 03:15

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General

Target

4bdb678d95f5d6284f95f9254cccb49f.dll
Size

5.0MB
MD5

4bdb678d95f5d6284f95f9254cccb49f
SHA1

75585376ab7c97f79ec782a590b37ee01b821930
SHA256

82fbd5e91ad1a70839605f4985d6b6be7a5dbada644912119db7a2c25aa294b5
SHA512

5ff91cf3c499c01b7a9afaea66dfc62a982e3258b76f726f851a84c1883aa902a533e2c57141e39a62e0ae0ec9908568020431e732c8ed38134f9b725fe55e34

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3285) 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

1420 mssecsvc.exe
1620 mssecsvc.exe
1916 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:

mssecsvc.exerundll32.exe

description ioc process

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

pid	process
1420	mssecsvc.exe
1620	mssecsvc.exe
1916	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.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\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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3428 wrote to memory of 3732	3428	rundll32.exe	rundll32.exe
PID 3428 wrote to memory of 3732	3428	rundll32.exe	rundll32.exe
PID 3428 wrote to memory of 3732	3428	rundll32.exe	rundll32.exe
PID 3732 wrote to memory of 1420	3732	rundll32.exe	mssecsvc.exe
PID 3732 wrote to memory of 1420	3732	rundll32.exe	mssecsvc.exe
PID 3732 wrote to memory of 1420	3732	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4bdb678d95f5d6284f95f9254cccb49f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3428

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4bdb678d95f5d6284f95f9254cccb49f.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3732

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1420

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1916

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1620

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
ccd3b3d1821abf3912be165c14db9246

SHA1
a2269e467c06453badeca3ba1dd709cef3e82ca4

SHA256
1317e24704306ab9bfc8c220935c0a9a0e3fa7ed74499b1a0d9be5cf5502d760

SHA512
884f8981fc6ecbb8eebc5ee33de1426eef45f41ea3c4dbb696ce0f90aaffd7a07cbbd4dcf775e7d8bbee954d92fac5bbb21423174ef41b47e7f7f8270dbebbb5

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
ccd3b3d1821abf3912be165c14db9246

SHA1
a2269e467c06453badeca3ba1dd709cef3e82ca4

SHA256
1317e24704306ab9bfc8c220935c0a9a0e3fa7ed74499b1a0d9be5cf5502d760

SHA512
884f8981fc6ecbb8eebc5ee33de1426eef45f41ea3c4dbb696ce0f90aaffd7a07cbbd4dcf775e7d8bbee954d92fac5bbb21423174ef41b47e7f7f8270dbebbb5

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
ccd3b3d1821abf3912be165c14db9246

SHA1
a2269e467c06453badeca3ba1dd709cef3e82ca4

SHA256
1317e24704306ab9bfc8c220935c0a9a0e3fa7ed74499b1a0d9be5cf5502d760

SHA512
884f8981fc6ecbb8eebc5ee33de1426eef45f41ea3c4dbb696ce0f90aaffd7a07cbbd4dcf775e7d8bbee954d92fac5bbb21423174ef41b47e7f7f8270dbebbb5

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
02b589c5ec944eb8c64c1b13b49f6cfe

SHA1
988b21e6a1f08b8faa75e7647a0c46616366ca75

SHA256
4edb742badddc3e019c7b90d70d209ca47de43fa666ed049be9070a8b52c3282

SHA512
670b6ffd223c64d0fb3eaf29976dab6239d794d5fec73e1345eb4ee829655a115e703919ee96f3c12fd20ffff4035e99d4e4448952937c9f509659644892fd48

Download Submit
memory/1420-131-0x0000000000000000-mapping.dmp

Download
memory/3732-130-0x0000000000000000-mapping.dmp

Download