wannacry | 0afb07f4dc3f28c640534c4282af4f467e0f25f271407b7deea06b6e8ec559a3

Analysis

max time kernel
151s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2022 03:55

Target

0afb07f4dc3f28c640534c4282af4f467e0f25f271407b7deea06b6e8ec559a3.dll
Size

5.0MB
MD5

f019831d5f37a996e5f8f7338de3f50d
SHA1

e52d9f459059e297a0802d4c99cabf9b8f9540ff
SHA256

0afb07f4dc3f28c640534c4282af4f467e0f25f271407b7deea06b6e8ec559a3
SHA512

cee576bd57d2dd20df722d19cb797db022e832f2ca281c499b473685a25f51586843ffd8ffef898f02e8ab8fbbc984cc913eca591670560594aaf9b2ad9f70db
SSDEEP

49152:RnxQqMSPbcBVQej/1INRx+TSqTdX1HkQ9nK4JKAR:16qPoBhz1aRxcSUDk

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3130) 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

4956 mssecsvr.exe
4580 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:

mssecsvr.exerundll32.exe

description ioc process

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

pid	process
4956	mssecsvr.exe
4580	mssecsvr.exe

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

Modifies data under HKEY_USERS 12 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\AutoDetect = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	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\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1944 wrote to memory of 3112	1944	rundll32.exe	rundll32.exe
PID 1944 wrote to memory of 3112	1944	rundll32.exe	rundll32.exe
PID 1944 wrote to memory of 3112	1944	rundll32.exe	rundll32.exe
PID 3112 wrote to memory of 4956	3112	rundll32.exe	mssecsvr.exe
PID 3112 wrote to memory of 4956	3112	rundll32.exe	mssecsvr.exe
PID 3112 wrote to memory of 4956	3112	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0afb07f4dc3f28c640534c4282af4f467e0f25f271407b7deea06b6e8ec559a3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1944

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
76a488b08f2181c80d34bac0dded51b9

SHA1
2560b67b0ab4fb9030eb915359efe1e6eb369b8d

SHA256
73d6217e112c5c2eeff2d4f77a5567814f272a9524ea00ffb0895118883fb9c9

SHA512
10e7045fc566010e92fe5fbe25a096fbab5df848c9103bf6c2f5baaa9e10d678df5578297236dc8c6efee0a093af4486a6551e1d574daeb856e8e06cdcbb4a5d

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
76a488b08f2181c80d34bac0dded51b9

SHA1
2560b67b0ab4fb9030eb915359efe1e6eb369b8d

SHA256
73d6217e112c5c2eeff2d4f77a5567814f272a9524ea00ffb0895118883fb9c9

SHA512
10e7045fc566010e92fe5fbe25a096fbab5df848c9103bf6c2f5baaa9e10d678df5578297236dc8c6efee0a093af4486a6551e1d574daeb856e8e06cdcbb4a5d

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
76a488b08f2181c80d34bac0dded51b9

SHA1
2560b67b0ab4fb9030eb915359efe1e6eb369b8d

SHA256
73d6217e112c5c2eeff2d4f77a5567814f272a9524ea00ffb0895118883fb9c9

SHA512
10e7045fc566010e92fe5fbe25a096fbab5df848c9103bf6c2f5baaa9e10d678df5578297236dc8c6efee0a093af4486a6551e1d574daeb856e8e06cdcbb4a5d

Download Submit
memory/3112-132-0x0000000000000000-mapping.dmp

Download
memory/4956-133-0x0000000000000000-mapping.dmp

Download