wannacry | a54dc9d2c7a0395fffce3e9385196abf4ff0694a8e22eb3e81f4656e8b4f91b5

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 02:59

Target

2a45a7ed67aab07387c67c30b04396c5.dll
Size

5.0MB
MD5

2a45a7ed67aab07387c67c30b04396c5
SHA1

99e879f8aa85ca4d1647ee14db1988d1fb026b76
SHA256

a54dc9d2c7a0395fffce3e9385196abf4ff0694a8e22eb3e81f4656e8b4f91b5
SHA512

6fbc2a1f071d6db7119673cbeb005fc7b265f20d90f554c02a8c79c7d6f172d6fbc0ab223168cca0f56bee58ca2216917717e9c6b2fa5af3abe2be9fdefee3bf

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3228) 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 2 IoCs

Processes:

mssecsvr.exemssecsvr.exe

pid process

60 mssecsvr.exe
1552 mssecsvr.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.exemssecsvr.exe

description ioc process

File created C:\WINDOWS\mssecsvr.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvr.exe

pid	process
60	mssecsvr.exe
1552	mssecsvr.exe

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

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvr.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1576 wrote to memory of 3260	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 3260	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 3260	1576	rundll32.exe	rundll32.exe
PID 3260 wrote to memory of 60	3260	rundll32.exe	mssecsvr.exe
PID 3260 wrote to memory of 60	3260	rundll32.exe	mssecsvr.exe
PID 3260 wrote to memory of 60	3260	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2a45a7ed67aab07387c67c30b04396c5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1576

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

C:\WINDOWS\mssecsvr.exe

Filesize
2.2MB

MD5
526350c48e2311699f793fa3cc5a8f6e

SHA1
def340951878144f4e6fd78aa809303a1f5cec85

SHA256
e43fab0d4d134237930888e13fcb91e28fb7236a7f7db4d9b29531c3fe1004dd

SHA512
d2db85073e72f7fd4bb4811c135861733d0b5d0a8a7a1647803443284d3d12b4bdb1d8c0d1cb6b015ff4370f4d7f03aadc83d15359540b34eeeb411a4a612287

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
526350c48e2311699f793fa3cc5a8f6e

SHA1
def340951878144f4e6fd78aa809303a1f5cec85

SHA256
e43fab0d4d134237930888e13fcb91e28fb7236a7f7db4d9b29531c3fe1004dd

SHA512
d2db85073e72f7fd4bb4811c135861733d0b5d0a8a7a1647803443284d3d12b4bdb1d8c0d1cb6b015ff4370f4d7f03aadc83d15359540b34eeeb411a4a612287

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
526350c48e2311699f793fa3cc5a8f6e

SHA1
def340951878144f4e6fd78aa809303a1f5cec85

SHA256
e43fab0d4d134237930888e13fcb91e28fb7236a7f7db4d9b29531c3fe1004dd

SHA512
d2db85073e72f7fd4bb4811c135861733d0b5d0a8a7a1647803443284d3d12b4bdb1d8c0d1cb6b015ff4370f4d7f03aadc83d15359540b34eeeb411a4a612287

Download Submit
memory/60-131-0x0000000000000000-mapping.dmp

Download
memory/3260-130-0x0000000000000000-mapping.dmp

Download