wannacry | 15e65f0b7dfaa38ff7379b6ae524169761b01225ba178124cae538b692581ef6

Analysis

max time kernel
169s
max time network
173s
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 02:31

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General

Target

a1118e338f2ae1b5837396edb09ea62b.dll
Size

5.0MB
MD5

a1118e338f2ae1b5837396edb09ea62b
SHA1

6b1ad64df7639acdb8a7dce2a9ddb230ebb91096
SHA256

15e65f0b7dfaa38ff7379b6ae524169761b01225ba178124cae538b692581ef6
SHA512

371f4af2863f564199f9b3d908784528b971255378cf2d7206913cff6c9508b984900e2471677bbdd800df2a7ae18a9a968171034df3189c13224aee5c83b0ac

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3105) 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 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

4268 mssecsvc.exe
1692 mssecsvc.exe
4108 tasksche.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.exemssecsvc.exe

description ioc process

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

pid	process
4268	mssecsvc.exe
1692	mssecsvc.exe
4108	tasksche.exe

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

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3436 wrote to memory of 4140	3436	rundll32.exe	rundll32.exe
PID 3436 wrote to memory of 4140	3436	rundll32.exe	rundll32.exe
PID 3436 wrote to memory of 4140	3436	rundll32.exe	rundll32.exe
PID 4140 wrote to memory of 4268	4140	rundll32.exe	mssecsvc.exe
PID 4140 wrote to memory of 4268	4140	rundll32.exe	mssecsvc.exe
PID 4140 wrote to memory of 4268	4140	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a1118e338f2ae1b5837396edb09ea62b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3436

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a1118e338f2ae1b5837396edb09ea62b.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4140

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4268

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4108

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1692

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe

Filesize
3.6MB

MD5
39c86da8011c0cd923a9357842d678a0

SHA1
9c14c5be89ddf92cbd327ac8ee420b76bb043598

SHA256
d287e023385b885911765941a9c06c149d0c92d3d45aea4a014da3004aa849fe

SHA512
e25f27a8e8592ada9b4cc71163949e5749e0d8f4aa10abb01cef8521d6d574a93212824faa0a5aa0bbc7cbe376bd0ea87c0a4d5376f3275e1ad7ca8999513dcf

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
39c86da8011c0cd923a9357842d678a0

SHA1
9c14c5be89ddf92cbd327ac8ee420b76bb043598

SHA256
d287e023385b885911765941a9c06c149d0c92d3d45aea4a014da3004aa849fe

SHA512
e25f27a8e8592ada9b4cc71163949e5749e0d8f4aa10abb01cef8521d6d574a93212824faa0a5aa0bbc7cbe376bd0ea87c0a4d5376f3275e1ad7ca8999513dcf

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
39c86da8011c0cd923a9357842d678a0

SHA1
9c14c5be89ddf92cbd327ac8ee420b76bb043598

SHA256
d287e023385b885911765941a9c06c149d0c92d3d45aea4a014da3004aa849fe

SHA512
e25f27a8e8592ada9b4cc71163949e5749e0d8f4aa10abb01cef8521d6d574a93212824faa0a5aa0bbc7cbe376bd0ea87c0a4d5376f3275e1ad7ca8999513dcf

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
3475b0e7e1d749c9b1b174da8c01d190

SHA1
69f737f2f05c008b4348732155e73235e71603d9

SHA256
c66e7af0cf8c2882c6fa8db7973ae4ba045a03881514346fa3527e2c995329a9

SHA512
a35f6fdfdabc32416b526ff0f68735e8a4aa48e635355b5437767ba712adf09684cd53caccd9636369db0d41b3195e72673dd3a7a150916326445964de9f7df9

Download Submit
memory/4140-130-0x0000000000000000-mapping.dmp

Download
memory/4268-131-0x0000000000000000-mapping.dmp

Download