wannacry | 2b5cbf5e13320559b9362865a4167d3a4fb2400a81529dd37e54344071a41ad9

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 01:42

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General

Target

6eee80b7e7fd17c1b778b19ea770cef4.dll
Size

5.0MB
MD5

6eee80b7e7fd17c1b778b19ea770cef4
SHA1

038762f633fdf30aa2293480f3d3137836d9c4b1
SHA256

2b5cbf5e13320559b9362865a4167d3a4fb2400a81529dd37e54344071a41ad9
SHA512

a2147b6ca7f92831726b6944fdfcb9cd0b6dc7cb89132cac6eabea5a9d4d1e7f312eadd7c8d7784df54f5e3be0a49662e7760c958affe3304947acfb50890aa7

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3276) 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

4324 mssecsvc.exe
3532 mssecsvc.exe
4812 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
4324	mssecsvc.exe
3532	mssecsvc.exe
4812	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 2768 wrote to memory of 3732	2768	rundll32.exe	rundll32.exe
PID 2768 wrote to memory of 3732	2768	rundll32.exe	rundll32.exe
PID 2768 wrote to memory of 3732	2768	rundll32.exe	rundll32.exe
PID 3732 wrote to memory of 4324	3732	rundll32.exe	mssecsvc.exe
PID 3732 wrote to memory of 4324	3732	rundll32.exe	mssecsvc.exe
PID 3732 wrote to memory of 4324	3732	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6eee80b7e7fd17c1b778b19ea770cef4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2768

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6eee80b7e7fd17c1b778b19ea770cef4.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3732

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4324

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4812

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3532

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
40db6d6e93af31e18d079ecaa961e9f2

SHA1
e0ddc16c1194d6fb1541dec7395a2c1b4bd53a5b

SHA256
8ac3915a26602c3dd4a68d5c1d2a92e28492776210120c2d629b8b8b28e33763

SHA512
d2c1cdebb1d2158cac4681939db73d9dd8faf7cf5f4caccea94335f23c333659a8fec83cb1804bd4942370f1b168328e8e272517c90667c98327abcca7ec6240

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
40db6d6e93af31e18d079ecaa961e9f2

SHA1
e0ddc16c1194d6fb1541dec7395a2c1b4bd53a5b

SHA256
8ac3915a26602c3dd4a68d5c1d2a92e28492776210120c2d629b8b8b28e33763

SHA512
d2c1cdebb1d2158cac4681939db73d9dd8faf7cf5f4caccea94335f23c333659a8fec83cb1804bd4942370f1b168328e8e272517c90667c98327abcca7ec6240

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
40db6d6e93af31e18d079ecaa961e9f2

SHA1
e0ddc16c1194d6fb1541dec7395a2c1b4bd53a5b

SHA256
8ac3915a26602c3dd4a68d5c1d2a92e28492776210120c2d629b8b8b28e33763

SHA512
d2c1cdebb1d2158cac4681939db73d9dd8faf7cf5f4caccea94335f23c333659a8fec83cb1804bd4942370f1b168328e8e272517c90667c98327abcca7ec6240

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7d1072fdfab15ea2d81cac1a28ebb877

SHA1
4a35d6be33cfbeee97184e2634df53dddce04633

SHA256
5a5df19549d72ba0c8f6b3d38787930e6d34f368b17e7ac7dc96444ed728d017

SHA512
308f972fdecb660f767a88bb174a30ae1a9dde89a81160ffc4aaf01bbf75f15a8c19f16f78491060bc2dce10efa7787c6b35e88a933d17c3c22d0947d93328d6

Download Submit
memory/3732-130-0x0000000000000000-mapping.dmp

Download
memory/4324-131-0x0000000000000000-mapping.dmp

Download