wannacry | eac6b0bbe69ef8c0dc8e36cbff6d5c2a7cb4d662f4d88e5bc8b596b2275d694b

Analysis

max time kernel
151s
max time network
155s
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, 01:53

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General

Target
4880cc5c5074c2f58a770c3a292384f9.dll
Size 5.0MB
Sample220720-cazlaaaggj
SHA256 eac6b0bbe69ef8c0dc8e36cbff6d5c2a7cb4d662f4d88e5bc8b596b2275d694b
MD5 4880cc5c5074c2f58a770c3a292384f9
SHA1 c63ae9a8f1013675ff914b88d257e18bdbac7181
SHA512 914435ff0b3f04c0451bee6aed3b3101f1f89f82cb50c15ee4cddab5716a0a7444ab31afc03103d0d4b0d18467399b3dfc1543749129c3cb7c353db91abda168
MD5 SHA1 SHA512

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3234) 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

pid	Process
756	mssecsvc.exe
4324	mssecsvc.exe
4088	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

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

description	ioc	Process
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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1540 wrote to memory of 3704	1540	rundll32.exe	80
PID 1540 wrote to memory of 3704	1540	rundll32.exe	80
PID 1540 wrote to memory of 3704	1540	rundll32.exe	80
PID 3704 wrote to memory of 756	3704	rundll32.exe	81
PID 3704 wrote to memory of 756	3704	rundll32.exe	81
PID 3704 wrote to memory of 756	3704	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4880cc5c5074c2f58a770c3a292384f9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4880cc5c5074c2f58a770c3a292384f9.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3704
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:756
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4088

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4324

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

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Downloads

mssecsvc.exe

Path C:\WINDOWS\mssecsvc.exe
Size 3.6MB
SHA256 715e4bb1f29e0d13fa502f77be2d2c8b841db3f3e6c873a4df2adb3f8d6873ad
MD5 6e7fe070bf1423650e1880acda3681d0
SHA1 0a0679cd0a1b84022630eb8edaa9917b33d80ff4
SHA512 2b974ec0f40248169574ff39f034f215ae5fda49a276687a6ef065d79d4319684ce5463bdfee35cdc1a818ec0fca22857048e868100286d1a3600e81c5f4a107
SSDEEP 49152:8nQQqMSPbcBVQejux+TSqTdX1HkQo6SAARdhnv:czqPoBhKxcSUDk36SAEdhv
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 715e4bb1f29e0d13fa502f77be2d2c8b841db3f3e6c873a4df2adb3f8d6873ad
MD5 6e7fe070bf1423650e1880acda3681d0
SHA1 0a0679cd0a1b84022630eb8edaa9917b33d80ff4
SHA512 2b974ec0f40248169574ff39f034f215ae5fda49a276687a6ef065d79d4319684ce5463bdfee35cdc1a818ec0fca22857048e868100286d1a3600e81c5f4a107
SSDEEP 49152:8nQQqMSPbcBVQejux+TSqTdX1HkQo6SAARdhnv:czqPoBhKxcSUDk36SAEdhv
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 715e4bb1f29e0d13fa502f77be2d2c8b841db3f3e6c873a4df2adb3f8d6873ad
MD5 6e7fe070bf1423650e1880acda3681d0
SHA1 0a0679cd0a1b84022630eb8edaa9917b33d80ff4
SHA512 2b974ec0f40248169574ff39f034f215ae5fda49a276687a6ef065d79d4319684ce5463bdfee35cdc1a818ec0fca22857048e868100286d1a3600e81c5f4a107
SSDEEP 49152:8nQQqMSPbcBVQejux+TSqTdX1HkQo6SAARdhnv:czqPoBhKxcSUDk36SAEdhv
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 aba9184f5e1343336fc084a11ab77bd7af11c93044cf7d3111d677dcf995bca4
MD5 cb5d464d9db6d56e17ce7c3a507969be
SHA1 b71e9ef4b55b17895be9996a10fe82abd5730f62
SHA512 e238111195bded2da19b1e74d6c14cde19556d8660a6d466b14f8275c89c707619235125c31175a3cf0cd1be5d0b0f68551bce74970bb6d140e5b8ea54658da4
SSDEEP 49152:nQqMSPbcBVQejux+TSqTdX1HkQo6SAARdhnv:QqPoBhKxcSUDk36SAEdhv
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads