wannacry | d6cb63f23b784915ebd8ac1b195c46251fa1241b324beb99a61d7c4ba27ea99b

Analysis

max time kernel
151s
max time network
178s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
19-07-2022 18:44

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General

Target

c27ecb1de9ca748605af567237eeed4f.dll
Size

5.0MB
MD5

c27ecb1de9ca748605af567237eeed4f
SHA1

f3b0fed4b1ba6da067663fed061d1ba03c883ab4
SHA256

d6cb63f23b784915ebd8ac1b195c46251fa1241b324beb99a61d7c4ba27ea99b
SHA512

97b1e363a8a8685d796aa87d65f219a8b41713bc8927e3bf05405741659a097008bce261b8746b1d63faf5516ee3ac0a283fbdc7f17060e16617237150c8ebae

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1195) 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

1140 mssecsvc.exe
1928 mssecsvc.exe
2032 tasksche.exe

pid	process
1140	mssecsvc.exe
1928	mssecsvc.exe
2032	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

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
Modifies data under HKEY_USERS 1 IoCs

Processes:

mssecsvc.exe

description ioc process

Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvc.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1632 wrote to memory of 1944	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 1944	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 1944	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 1944	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 1944	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 1944	1632	rundll32.exe	rundll32.exe
PID 1632 wrote to memory of 1944	1632	rundll32.exe	rundll32.exe
PID 1944 wrote to memory of 1140	1944	rundll32.exe	mssecsvc.exe
PID 1944 wrote to memory of 1140	1944	rundll32.exe	mssecsvc.exe
PID 1944 wrote to memory of 1140	1944	rundll32.exe	mssecsvc.exe
PID 1944 wrote to memory of 1140	1944	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c27ecb1de9ca748605af567237eeed4f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1632

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c27ecb1de9ca748605af567237eeed4f.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1944

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1140

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2032

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1928

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
58307b57d8768dd4392b17dc94261221

SHA1
7c972e40f96b3980f9e012a7c6db243d3a35f834

SHA256
d21081d828e9cbf42d91850ccf4a6acef2be17892528987392f5a16bf84e99f1

SHA512
05dc925cf6dfbfec780326791418c31986765d83d43818d1d9a5d3d37d2bbe7f4d374c63d888f0346797bb933052c6bf2ec275cea8beda4e87e754a29f3e5c5d

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

MD5
58307b57d8768dd4392b17dc94261221

SHA1
7c972e40f96b3980f9e012a7c6db243d3a35f834

SHA256
d21081d828e9cbf42d91850ccf4a6acef2be17892528987392f5a16bf84e99f1

SHA512
05dc925cf6dfbfec780326791418c31986765d83d43818d1d9a5d3d37d2bbe7f4d374c63d888f0346797bb933052c6bf2ec275cea8beda4e87e754a29f3e5c5d

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

MD5
58307b57d8768dd4392b17dc94261221

SHA1
7c972e40f96b3980f9e012a7c6db243d3a35f834

SHA256
d21081d828e9cbf42d91850ccf4a6acef2be17892528987392f5a16bf84e99f1

SHA512
05dc925cf6dfbfec780326791418c31986765d83d43818d1d9a5d3d37d2bbe7f4d374c63d888f0346797bb933052c6bf2ec275cea8beda4e87e754a29f3e5c5d

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

MD5
47a2a3ed83a3e4b42b339434b8d7795b

SHA1
6bf51b555fe4784326d2c0bff717d228b5789311

SHA256
eb5b0fa26712e678240a0c7fe2fdbb218763ad6b7b8b757d25dab9c5d2879d84

SHA512
fe487c6ed2ac7b9380e6d2abea5f7002c423bd4ae5ebec22c94622a62629b259905e21a80e7412e7a5583af299fa10def210f6f6c3c295e838636f885fa77014

Download Submit
memory/1140-56-0x0000000000000000-mapping.dmp

Download
memory/1944-54-0x0000000000000000-mapping.dmp

Download
memory/1944-55-0x0000000076871000-0x0000000076873000-memory.dmp

Filesize
8KB

Download