wannacry | a7a578d123a9a77ec5ed304e5a4421a7f2ec27504afe6e96d1ffc9bf51a4dee1

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
25-08-2022 19:36

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General

Target

d7ec2cdb973d9ad2e489fa0c7b3ffeb4.dll
Size

5.0MB
MD5

d7ec2cdb973d9ad2e489fa0c7b3ffeb4
SHA1

94466fff257c5e2135e5db48a7e4a0b1ab381d26
SHA256

a7a578d123a9a77ec5ed304e5a4421a7f2ec27504afe6e96d1ffc9bf51a4dee1
SHA512

0eebfbc58ff348eb00f89c11f6d81e2a4a063621d0a31b0c134ce46660f1faa11a582cfedb7710f127e8e8b696f4c473e091695a84e43d1852dba157339f8ead
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P593:TDqPe1Cxcxk3ZAEUadz

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2953) 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

416 mssecsvc.exe
5036 mssecsvc.exe
4532 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
416	mssecsvc.exe
5036	mssecsvc.exe
4532	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
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 5004 wrote to memory of 400	5004	rundll32.exe	rundll32.exe
PID 5004 wrote to memory of 400	5004	rundll32.exe	rundll32.exe
PID 5004 wrote to memory of 400	5004	rundll32.exe	rundll32.exe
PID 400 wrote to memory of 416	400	rundll32.exe	mssecsvc.exe
PID 400 wrote to memory of 416	400	rundll32.exe	mssecsvc.exe
PID 400 wrote to memory of 416	400	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d7ec2cdb973d9ad2e489fa0c7b3ffeb4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5004

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d7ec2cdb973d9ad2e489fa0c7b3ffeb4.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:400

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:416

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4532

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:5036

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
c18efac56280dfe18ebd1f361029d3f7

SHA1
b079ad82c2341e9178ced0b6a62a484a12075b56

SHA256
d013be1440f64e234c7631f2a3bb1b4d7c12bcb97d3804dc0e66753cde13ebc8

SHA512
8d1b77db6ad14e282cbcd3424318ee1457430e55d94fc7e27c528060082ec968d7ddee605784cc08ce216bcbed7486991dd36168bc01e3a56268c2d33b828191

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

MD5
c18efac56280dfe18ebd1f361029d3f7

SHA1
b079ad82c2341e9178ced0b6a62a484a12075b56

SHA256
d013be1440f64e234c7631f2a3bb1b4d7c12bcb97d3804dc0e66753cde13ebc8

SHA512
8d1b77db6ad14e282cbcd3424318ee1457430e55d94fc7e27c528060082ec968d7ddee605784cc08ce216bcbed7486991dd36168bc01e3a56268c2d33b828191

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

MD5
c18efac56280dfe18ebd1f361029d3f7

SHA1
b079ad82c2341e9178ced0b6a62a484a12075b56

SHA256
d013be1440f64e234c7631f2a3bb1b4d7c12bcb97d3804dc0e66753cde13ebc8

SHA512
8d1b77db6ad14e282cbcd3424318ee1457430e55d94fc7e27c528060082ec968d7ddee605784cc08ce216bcbed7486991dd36168bc01e3a56268c2d33b828191

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

MD5
fc0195c3fbc9d1ba19811d3c36b2bea4

SHA1
d618abf74712f8730fbad1d0988d1c30e1ec036b

SHA256
0c2837a2d107e6f9b508e63a48da7ef89e902907df6102a9de2fd2509316f739

SHA512
01423a0dd12ce2b337ef97087073945c9282cc0c51d8be12c43425e3357292b92f29ed43af52e7d6ff34adbb1cc10f8b34d2362995b3a9248bad71337b92d965

Download Submit
memory/400-132-0x0000000000000000-mapping.dmp

Download
memory/416-133-0x0000000000000000-mapping.dmp

Download