wannacry | fafa7cb85fe7b111bf2484141d8dd4ad763007202b1e78aa7ebdaab3bb121a26

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 01:30

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General

Target

073906fb1146a94214c99d3415297b5b.dll
Size

5.0MB
MD5

073906fb1146a94214c99d3415297b5b
SHA1

517e601390f3ecdd41931a96b8196cba424ba805
SHA256

fafa7cb85fe7b111bf2484141d8dd4ad763007202b1e78aa7ebdaab3bb121a26
SHA512

79f42b6094d4742085c8dba0e554f32d80ec73381d7442669892fc7cea9241c94ea4a0010713f2c901fa6347b228c3a8a60ff300a38c4eff98c379d8cea2e9ab

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2678) 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

1156 mssecsvc.exe
3032 mssecsvc.exe
4984 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
1156	mssecsvc.exe
3032	mssecsvc.exe
4984	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 868 wrote to memory of 984	868	rundll32.exe	rundll32.exe
PID 868 wrote to memory of 984	868	rundll32.exe	rundll32.exe
PID 868 wrote to memory of 984	868	rundll32.exe	rundll32.exe
PID 984 wrote to memory of 1156	984	rundll32.exe	mssecsvc.exe
PID 984 wrote to memory of 1156	984	rundll32.exe	mssecsvc.exe
PID 984 wrote to memory of 1156	984	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\073906fb1146a94214c99d3415297b5b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:868

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\073906fb1146a94214c99d3415297b5b.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:984

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1156

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4984

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3032

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
6e62c9ba8c9b866018f43687cc9d82f7

SHA1
b92d863de68be1fa1610d7b36ebaaee07177d25c

SHA256
d7c2aa2180b52adff9b3426d2fdc06403e48d964d2d27cf717487062b7956a89

SHA512
2a5b4f7b1d4107db8e84609ce9f8dbabd1087a68056c9ab60bf3c26baf11fb04666757013717b062869e43894cbb354315868d0700cffab88d83212928b24640

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

MD5
6e62c9ba8c9b866018f43687cc9d82f7

SHA1
b92d863de68be1fa1610d7b36ebaaee07177d25c

SHA256
d7c2aa2180b52adff9b3426d2fdc06403e48d964d2d27cf717487062b7956a89

SHA512
2a5b4f7b1d4107db8e84609ce9f8dbabd1087a68056c9ab60bf3c26baf11fb04666757013717b062869e43894cbb354315868d0700cffab88d83212928b24640

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

MD5
6e62c9ba8c9b866018f43687cc9d82f7

SHA1
b92d863de68be1fa1610d7b36ebaaee07177d25c

SHA256
d7c2aa2180b52adff9b3426d2fdc06403e48d964d2d27cf717487062b7956a89

SHA512
2a5b4f7b1d4107db8e84609ce9f8dbabd1087a68056c9ab60bf3c26baf11fb04666757013717b062869e43894cbb354315868d0700cffab88d83212928b24640

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

MD5
f9e34b42cb41b3b94857e1e65ce49bf5

SHA1
8ca85df9e553fb73780f4f461d1ceef50d0f8bee

SHA256
23854b9310e703c5ae103bb5de5c83cf89bc10138fecab99533ebc4dd7207be7

SHA512
a1014103e6c892a89d8b89775a12a9d5a2baab777606baac36157d2272b2dd19c55356a09ff4cb0bcdd3b36fb49258c97d3a7b9c7bd6bafa2eac063b0136d02a

Download Submit
memory/984-130-0x0000000000000000-mapping.dmp

Download
memory/1156-131-0x0000000000000000-mapping.dmp

Download