wannacry | 72ff24923e8f0101d384ce359e014fe06691e2a603c7d1721ec7a477ff825383

Analysis

max time kernel
152s
max time network
156s
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 00:46

Target

a04eedfd36add320d1853d5a76efc719.dll
Size

5.0MB
MD5

a04eedfd36add320d1853d5a76efc719
SHA1

f57118b1268c27f96812182291a1f03d05312fea
SHA256

72ff24923e8f0101d384ce359e014fe06691e2a603c7d1721ec7a477ff825383
SHA512

edfeedf28537a31d4c3b7a0e1e2bab386d54af80d4ef4fb9aaaeb51f579fae997e0480385cbff211dacfeda15f4bd2d55acf397aede700ce99840ac6afd4124d

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3355) 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

884 mssecsvr.exe
2320 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
884	mssecsvr.exe
2320	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 5084 wrote to memory of 4112	5084	rundll32.exe	rundll32.exe
PID 5084 wrote to memory of 4112	5084	rundll32.exe	rundll32.exe
PID 5084 wrote to memory of 4112	5084	rundll32.exe	rundll32.exe
PID 4112 wrote to memory of 884	4112	rundll32.exe	mssecsvr.exe
PID 4112 wrote to memory of 884	4112	rundll32.exe	mssecsvr.exe
PID 4112 wrote to memory of 884	4112	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a04eedfd36add320d1853d5a76efc719.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5084

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
593db3849fe4faa244b4cf94dabdfd35

SHA1
6a2e46953820e7859b3b468efe053249a13678a3

SHA256
dc9bc5110090fe1fcac02faf801d6c7aff6ee779df65ff2cc079efb1dd44469a

SHA512
b46e3f62b26ed3a1cf73132ee6b82c919596053f38d07b4cf069a2b3ac3ca5f32a3345e18b6735afd4b555b8bcaab2e6be2b6da13b5996b4179f92c109566b38

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

MD5
593db3849fe4faa244b4cf94dabdfd35

SHA1
6a2e46953820e7859b3b468efe053249a13678a3

SHA256
dc9bc5110090fe1fcac02faf801d6c7aff6ee779df65ff2cc079efb1dd44469a

SHA512
b46e3f62b26ed3a1cf73132ee6b82c919596053f38d07b4cf069a2b3ac3ca5f32a3345e18b6735afd4b555b8bcaab2e6be2b6da13b5996b4179f92c109566b38

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

MD5
593db3849fe4faa244b4cf94dabdfd35

SHA1
6a2e46953820e7859b3b468efe053249a13678a3

SHA256
dc9bc5110090fe1fcac02faf801d6c7aff6ee779df65ff2cc079efb1dd44469a

SHA512
b46e3f62b26ed3a1cf73132ee6b82c919596053f38d07b4cf069a2b3ac3ca5f32a3345e18b6735afd4b555b8bcaab2e6be2b6da13b5996b4179f92c109566b38

Download Submit
memory/884-134-0x0000000000000000-mapping.dmp

Download
memory/4112-133-0x0000000000000000-mapping.dmp

Download