wannacry | d0c7fb36a75c0b56a8837e4e2715c515e696a91d05fbb248f818dbd87714b0bd

Analysis

max time kernel
158s
max time network
163s
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 02:01

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General

Target

312e655bf17828aa2d3396a43ea55b95.dll
Size

5.0MB
MD5

312e655bf17828aa2d3396a43ea55b95
SHA1

94808b61d30df657eabe61c25bf867c1d0d2bf5d
SHA256

d0c7fb36a75c0b56a8837e4e2715c515e696a91d05fbb248f818dbd87714b0bd
SHA512

3a34f2177fc77bd331a69b373c36ecd2adef2bf5601552b19693b79a76496d678d5983947057ff9790e7eca387d9e81d26dfdaa666f10c4afee1d529767fd35f

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3133) 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

5056 mssecsvc.exe
1944 mssecsvc.exe
3224 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
5056	mssecsvc.exe
1944	mssecsvc.exe
3224	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 3348 wrote to memory of 4276	3348	rundll32.exe	rundll32.exe
PID 3348 wrote to memory of 4276	3348	rundll32.exe	rundll32.exe
PID 3348 wrote to memory of 4276	3348	rundll32.exe	rundll32.exe
PID 4276 wrote to memory of 5056	4276	rundll32.exe	mssecsvc.exe
PID 4276 wrote to memory of 5056	4276	rundll32.exe	mssecsvc.exe
PID 4276 wrote to memory of 5056	4276	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\312e655bf17828aa2d3396a43ea55b95.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3348

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\312e655bf17828aa2d3396a43ea55b95.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4276

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:5056

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3224

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1944

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
a1d120551b04544acc640021d3f062b7

SHA1
5669a2cc6109f749483bd414b92adf58f236ab69

SHA256
317dad1d61275adb5fde24884f92bb299afee7c5dce8ebc3f866a039d22dd6b9

SHA512
539d8cce752abfea2e4449e4c4e0318be164e0da0d0a6b9d1f5315f107872bec6956104bdb8d52fce4104c532829ed65ab92655d2f5d02cbe86fabbea713d82d

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
a1d120551b04544acc640021d3f062b7

SHA1
5669a2cc6109f749483bd414b92adf58f236ab69

SHA256
317dad1d61275adb5fde24884f92bb299afee7c5dce8ebc3f866a039d22dd6b9

SHA512
539d8cce752abfea2e4449e4c4e0318be164e0da0d0a6b9d1f5315f107872bec6956104bdb8d52fce4104c532829ed65ab92655d2f5d02cbe86fabbea713d82d

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
a1d120551b04544acc640021d3f062b7

SHA1
5669a2cc6109f749483bd414b92adf58f236ab69

SHA256
317dad1d61275adb5fde24884f92bb299afee7c5dce8ebc3f866a039d22dd6b9

SHA512
539d8cce752abfea2e4449e4c4e0318be164e0da0d0a6b9d1f5315f107872bec6956104bdb8d52fce4104c532829ed65ab92655d2f5d02cbe86fabbea713d82d

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
715d386112c0ebc12ac2126185e8ad74

SHA1
ace42345d013fdcc3b42863a051ed29bab027c50

SHA256
0187b42e4c94f3ea96e2fbace4642e482daa517472df4a8ba48936c60e1a6f82

SHA512
1db66863a75ecf903435277685493cf9fad062bbea5820df1f12e05869f5b21fc84baa8cfe9c85d4bf3268deec72dc76cf16850628674837f3c467903befdc2d

Download Submit
memory/4276-130-0x0000000000000000-mapping.dmp

Download
memory/5056-131-0x0000000000000000-mapping.dmp

Download