wannacry | 303a93e18c5f8275e652e20f49fe1328bda2fe954e67ac7ccb3924e6d07470b8

Analysis

max time kernel
150s
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, 07:23

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General

Target
5449f3bb52d4ed570c9986fb1f735a7a.dll
Size 5.0MB
Sample220720-h7srwsdefl
SHA256 303a93e18c5f8275e652e20f49fe1328bda2fe954e67ac7ccb3924e6d07470b8
MD5 5449f3bb52d4ed570c9986fb1f735a7a
SHA1 72dd6ec6b775760bec6d97555129f685b8c7a69c
SHA512 1170e9720c37a8fa76868e72a79b7c34cdad68cb0303bc81d75df82eb2e92b0b5b2bd8d74138f78963795347cdb800c90f21088650c0be22d615aa3ab5cb84f2
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 (3236) 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
2688	mssecsvc.exe
2204	mssecsvc.exe
4136	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
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

description	pid	Process	procid_target
PID 3816 wrote to memory of 444	3816	rundll32.exe	80
PID 3816 wrote to memory of 444	3816	rundll32.exe	80
PID 3816 wrote to memory of 444	3816	rundll32.exe	80
PID 444 wrote to memory of 2688	444	rundll32.exe	81
PID 444 wrote to memory of 2688	444	rundll32.exe	81
PID 444 wrote to memory of 2688	444	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5449f3bb52d4ed570c9986fb1f735a7a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3816
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\5449f3bb52d4ed570c9986fb1f735a7a.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:444
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:2688
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4136

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2204

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 62ee84600bd6d447145e5f759e091abb7f1c82fe8c7217c5b6b11a3eaf690612
MD5 f42c2401bd8a009ff52027af446156ac
SHA1 0341cc74fb73229f48c1468e242777758bd9ee48
SHA512 1840a2b961194cb03936c3bdf6828adaa68516ba4b86b38ba6bc80455f4c05ba2edd43b14c329a4ddb7e5daec3c15d36f979da8e1a43948822474ae47d386437
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HkQ:XDqPoBhz1aRxcSUDk
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 62ee84600bd6d447145e5f759e091abb7f1c82fe8c7217c5b6b11a3eaf690612
MD5 f42c2401bd8a009ff52027af446156ac
SHA1 0341cc74fb73229f48c1468e242777758bd9ee48
SHA512 1840a2b961194cb03936c3bdf6828adaa68516ba4b86b38ba6bc80455f4c05ba2edd43b14c329a4ddb7e5daec3c15d36f979da8e1a43948822474ae47d386437
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HkQ:XDqPoBhz1aRxcSUDk
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 62ee84600bd6d447145e5f759e091abb7f1c82fe8c7217c5b6b11a3eaf690612
MD5 f42c2401bd8a009ff52027af446156ac
SHA1 0341cc74fb73229f48c1468e242777758bd9ee48
SHA512 1840a2b961194cb03936c3bdf6828adaa68516ba4b86b38ba6bc80455f4c05ba2edd43b14c329a4ddb7e5daec3c15d36f979da8e1a43948822474ae47d386437
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HkQ:XDqPoBhz1aRxcSUDk
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 6bb66f9d1638d28d61b053e7e9346448124b5bad1c16714afc02c3decafa33ab
MD5 b6aac9ad892b9731aa04c6f7767b9158
SHA1 034f80ad474bb82fe7517259f778be04f8608d78
SHA512 cc459dd29fa3a0442ab21ab5ff501167dd7352c3b633c6a1ccde0133a36e36161ef847e1cd1be75802cffe13ff219af4b1758ce1ada48edf23fcd9943c653e21
SSDEEP 24576:nQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqTPVXmiHkQg6:nQqMSPbcBVQej/1INRx+TSqTdX1HkQ
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