wannacry | cbb03a955d1f67c11be512805cc5d0201b14d71bef2d381fae902cfa7729319f

Analysis

max time kernel
150s
max time network
153s
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 03:10

Target

752fc35efbf506085effec3eab207f8c.dll
Size

5.0MB
MD5

752fc35efbf506085effec3eab207f8c
SHA1

1638ef45caea208a350b6c77720a7224126ec6a4
SHA256

cbb03a955d1f67c11be512805cc5d0201b14d71bef2d381fae902cfa7729319f
SHA512

24d576c16bd7c3c2d06aef635944198cfeede41cea8dcee1a2bea477bcde65ebd184b95f4cce2e68edfacf2e799d40f669acbd8696ba4bc21d632f0e35e5db90

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3200) 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

5076 mssecsvr.exe
4696 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
5076	mssecsvr.exe
4696	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
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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4572 wrote to memory of 2128	4572	rundll32.exe	rundll32.exe
PID 4572 wrote to memory of 2128	4572	rundll32.exe	rundll32.exe
PID 4572 wrote to memory of 2128	4572	rundll32.exe	rundll32.exe
PID 2128 wrote to memory of 5076	2128	rundll32.exe	mssecsvr.exe
PID 2128 wrote to memory of 5076	2128	rundll32.exe	mssecsvr.exe
PID 2128 wrote to memory of 5076	2128	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\752fc35efbf506085effec3eab207f8c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4572

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
b88e1a8d12b1fb195a27ac9490411876

SHA1
1d5c1fec976a77d049c55fd0a288f02209c96397

SHA256
bee4ba878907042c5114aa0657e9d8d8f3e3f4665460f25d9fc10b00dcdbcab3

SHA512
c56971b29edf981f6830a10cf07956925c10343ff02a819a8d8d66bc115f24cddb826a18f5579e864ce6b3dabf73fef8704bb3a20517b9ab757d3403dae31231

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
b88e1a8d12b1fb195a27ac9490411876

SHA1
1d5c1fec976a77d049c55fd0a288f02209c96397

SHA256
bee4ba878907042c5114aa0657e9d8d8f3e3f4665460f25d9fc10b00dcdbcab3

SHA512
c56971b29edf981f6830a10cf07956925c10343ff02a819a8d8d66bc115f24cddb826a18f5579e864ce6b3dabf73fef8704bb3a20517b9ab757d3403dae31231

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
b88e1a8d12b1fb195a27ac9490411876

SHA1
1d5c1fec976a77d049c55fd0a288f02209c96397

SHA256
bee4ba878907042c5114aa0657e9d8d8f3e3f4665460f25d9fc10b00dcdbcab3

SHA512
c56971b29edf981f6830a10cf07956925c10343ff02a819a8d8d66bc115f24cddb826a18f5579e864ce6b3dabf73fef8704bb3a20517b9ab757d3403dae31231

Download Submit
memory/2128-130-0x0000000000000000-mapping.dmp

Download
memory/5076-131-0x0000000000000000-mapping.dmp

Download