wannacry | b610f6bae1dbd0253c508d9995d18ebdad3d985b84060ec9eaf39472d8903e2b

Analysis

max time kernel
150s
max time network
152s
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 01:58

Target

6927111c4d2937c06c1cc3978d2e9214.dll
Size

5.0MB
MD5

6927111c4d2937c06c1cc3978d2e9214
SHA1

66a1ee19b5b71f0011a887f971ff1243daf7c63e
SHA256

b610f6bae1dbd0253c508d9995d18ebdad3d985b84060ec9eaf39472d8903e2b
SHA512

4244c666e87d4a4e0b409fffbb58c2734b954a62d9546fb7fb5558ac9da0f949648f4c7237876a8fc7f226f7fa479b791c626d375900cd2f354417f986adde6e

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3182) 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

5000 mssecsvr.exe
2216 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
5000	mssecsvr.exe
2216	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 4952 wrote to memory of 4988	4952	rundll32.exe	rundll32.exe
PID 4952 wrote to memory of 4988	4952	rundll32.exe	rundll32.exe
PID 4952 wrote to memory of 4988	4952	rundll32.exe	rundll32.exe
PID 4988 wrote to memory of 5000	4988	rundll32.exe	mssecsvr.exe
PID 4988 wrote to memory of 5000	4988	rundll32.exe	mssecsvr.exe
PID 4988 wrote to memory of 5000	4988	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6927111c4d2937c06c1cc3978d2e9214.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4952

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
ad1a6a33842bac7618e6796767ab556d

SHA1
6622c1514b7c7d677669cdae5497736727941e2e

SHA256
6201c93531f535842ba413bbfec852119d3349c48f93110521ac74d61c01c326

SHA512
5f3fd6cef4cf27c4362e5b23c7380594f2b3f7d3596b56fb1a1eb58d688e2147b3ee538ce3da3dd6d67d3789fa68ef6744d62cc598050869ac4e7dc305694b8d

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
ad1a6a33842bac7618e6796767ab556d

SHA1
6622c1514b7c7d677669cdae5497736727941e2e

SHA256
6201c93531f535842ba413bbfec852119d3349c48f93110521ac74d61c01c326

SHA512
5f3fd6cef4cf27c4362e5b23c7380594f2b3f7d3596b56fb1a1eb58d688e2147b3ee538ce3da3dd6d67d3789fa68ef6744d62cc598050869ac4e7dc305694b8d

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
ad1a6a33842bac7618e6796767ab556d

SHA1
6622c1514b7c7d677669cdae5497736727941e2e

SHA256
6201c93531f535842ba413bbfec852119d3349c48f93110521ac74d61c01c326

SHA512
5f3fd6cef4cf27c4362e5b23c7380594f2b3f7d3596b56fb1a1eb58d688e2147b3ee538ce3da3dd6d67d3789fa68ef6744d62cc598050869ac4e7dc305694b8d

Download Submit
memory/4988-130-0x0000000000000000-mapping.dmp

Download
memory/5000-131-0x0000000000000000-mapping.dmp

Download