wannacry | 786bee98d3899dd8d10e7da19c1f1232721946e235d60f7ae023b0c0832501c6

Analysis

max time kernel
151s
max time network
153s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
20-07-2022 03:00

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General

Target

75bd0b8e4cd2bfcdca7271eaf6669564.dll
Size

5.0MB
MD5

75bd0b8e4cd2bfcdca7271eaf6669564
SHA1

90d196a866208e23a01b6878d19fc1036e57ebb8
SHA256

786bee98d3899dd8d10e7da19c1f1232721946e235d60f7ae023b0c0832501c6
SHA512

12aef2c729e2cfbbc241027d370300f85bd97d52e2e1dbc960f39f7f2c31dd4fdab561fc5b1e3a38d9b018d7ec33e8a499879573c065652ba6be096aeaaa945b

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1258) 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

1544 mssecsvc.exe
848 mssecsvc.exe
1964 tasksche.exe

pid	process
1544	mssecsvc.exe
848	mssecsvc.exe
1964	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 972 wrote to memory of 1120	972	rundll32.exe	rundll32.exe
PID 972 wrote to memory of 1120	972	rundll32.exe	rundll32.exe
PID 972 wrote to memory of 1120	972	rundll32.exe	rundll32.exe
PID 972 wrote to memory of 1120	972	rundll32.exe	rundll32.exe
PID 972 wrote to memory of 1120	972	rundll32.exe	rundll32.exe
PID 972 wrote to memory of 1120	972	rundll32.exe	rundll32.exe
PID 972 wrote to memory of 1120	972	rundll32.exe	rundll32.exe
PID 1120 wrote to memory of 1544	1120	rundll32.exe	mssecsvc.exe
PID 1120 wrote to memory of 1544	1120	rundll32.exe	mssecsvc.exe
PID 1120 wrote to memory of 1544	1120	rundll32.exe	mssecsvc.exe
PID 1120 wrote to memory of 1544	1120	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\75bd0b8e4cd2bfcdca7271eaf6669564.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:972

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\75bd0b8e4cd2bfcdca7271eaf6669564.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1120

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1544

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1964

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:848

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
9cdbe95e20187bcab116d66cf42dff09

SHA1
1b0f6e3143049ec3c18c0f7f59ba83f60ba97b41

SHA256
97daf7d5fa2a2a46ac2281c038fcf61b1e2d7e2225e79001410b38239e999f38

SHA512
5fb8b821ca19cbfe09ed0ca7746a22e89711b7d6b8f8ed8c89cef28af3420e69c9471527c267876039bd703c05393969e9e9c97f65147ebfc811d4737a0b479a

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
9cdbe95e20187bcab116d66cf42dff09

SHA1
1b0f6e3143049ec3c18c0f7f59ba83f60ba97b41

SHA256
97daf7d5fa2a2a46ac2281c038fcf61b1e2d7e2225e79001410b38239e999f38

SHA512
5fb8b821ca19cbfe09ed0ca7746a22e89711b7d6b8f8ed8c89cef28af3420e69c9471527c267876039bd703c05393969e9e9c97f65147ebfc811d4737a0b479a

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
9cdbe95e20187bcab116d66cf42dff09

SHA1
1b0f6e3143049ec3c18c0f7f59ba83f60ba97b41

SHA256
97daf7d5fa2a2a46ac2281c038fcf61b1e2d7e2225e79001410b38239e999f38

SHA512
5fb8b821ca19cbfe09ed0ca7746a22e89711b7d6b8f8ed8c89cef28af3420e69c9471527c267876039bd703c05393969e9e9c97f65147ebfc811d4737a0b479a

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
1837687121dcf66b2831305e24a363a6

SHA1
e3b1badd355544832c3d7600f1d7322a94257fa2

SHA256
85128a98bc1374071485ee2cb5e2f4f72a3880953bd896723d96829c03257e47

SHA512
fb05b9333494aa033f621b98943b6dd7042025b5bbd74dd6aa32594d4f66031c1115756be5f454a92cd79c1ab9396ce4f2de1abcd662a2d18bfea8b30a1865e1

Download Submit
memory/1120-54-0x0000000000000000-mapping.dmp

Download
memory/1120-55-0x0000000075CE1000-0x0000000075CE3000-memory.dmp

Filesize
8KB

Download
memory/1544-56-0x0000000000000000-mapping.dmp

Download