wannacry | fcf337a1914aa74016ddbc369980bf9a703e9eafc80c8e7053c642ef0052266f

Analysis

max time kernel
156s
max time network
161s
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 03:13

Target

629e370b1d3ba9bf6724d7054bc89073.dll
Size

5.0MB
MD5

629e370b1d3ba9bf6724d7054bc89073
SHA1

76ec26415b600f0d373bd5fa24113e36b0f10ab3
SHA256

fcf337a1914aa74016ddbc369980bf9a703e9eafc80c8e7053c642ef0052266f
SHA512

2cc62c6eb7d50a1115f864fb0ee09930f5b87d3c5e83f5393e5650c81db265ee14724f348cb24260d6c255c45d7554544a968952843b37fd6ef061328f7152c2

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3294) 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

3816 mssecsvr.exe
2264 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
3816	mssecsvr.exe
2264	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\AutoDetect = "0"	mssecsvr.exe
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3644 wrote to memory of 1696	3644	rundll32.exe	rundll32.exe
PID 3644 wrote to memory of 1696	3644	rundll32.exe	rundll32.exe
PID 3644 wrote to memory of 1696	3644	rundll32.exe	rundll32.exe
PID 1696 wrote to memory of 3816	1696	rundll32.exe	mssecsvr.exe
PID 1696 wrote to memory of 3816	1696	rundll32.exe	mssecsvr.exe
PID 1696 wrote to memory of 3816	1696	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\629e370b1d3ba9bf6724d7054bc89073.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3644

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
8632b048ae93552c09c0ca80ed6230a5

SHA1
cbdd06886b6ffbccc620443f875ecd07db7c8909

SHA256
478e9dca209e33943a29a160f5959c86469b08766600f5183df106c2ea0713c0

SHA512
a3255f1e32c78a93e13111324d1a3e31396a9a42ea7ccf4377086c68216267601781b9e717a6e05540451cb4bd67a037a5770ea67bfaa2ebcfe02a1e8775d5b2

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
8632b048ae93552c09c0ca80ed6230a5

SHA1
cbdd06886b6ffbccc620443f875ecd07db7c8909

SHA256
478e9dca209e33943a29a160f5959c86469b08766600f5183df106c2ea0713c0

SHA512
a3255f1e32c78a93e13111324d1a3e31396a9a42ea7ccf4377086c68216267601781b9e717a6e05540451cb4bd67a037a5770ea67bfaa2ebcfe02a1e8775d5b2

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
8632b048ae93552c09c0ca80ed6230a5

SHA1
cbdd06886b6ffbccc620443f875ecd07db7c8909

SHA256
478e9dca209e33943a29a160f5959c86469b08766600f5183df106c2ea0713c0

SHA512
a3255f1e32c78a93e13111324d1a3e31396a9a42ea7ccf4377086c68216267601781b9e717a6e05540451cb4bd67a037a5770ea67bfaa2ebcfe02a1e8775d5b2

Download Submit
memory/1696-130-0x0000000000000000-mapping.dmp

Download
memory/3816-131-0x0000000000000000-mapping.dmp

Download