wannacry | fecdbea3b7439653a0b422b22bb957577b0f100dc43b13148c20cc282cd4d865

Analysis

max time kernel
150s
max time network
154s
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, 07:34

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General

Target
50cbca00cd028986ce1c332c8093cdd9.dll
Size 5.0MB
Sample220720-jd44hadfdr
SHA256 fecdbea3b7439653a0b422b22bb957577b0f100dc43b13148c20cc282cd4d865
MD5 50cbca00cd028986ce1c332c8093cdd9
SHA1 80e9c0da857b9ed792a9fae87f56ed3363ffb8b4
SHA512 b8fab37e2d280f0c518ca9e503c5d6cfd77fee1791c3a2c60365b939114b98099106d4bd98556f5aa7a762a32c0b64b5d3ac88beae81bb02645408bf2d114d56
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 (3068) 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
4640	mssecsvc.exe
4968	mssecsvc.exe
2132	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 4284 wrote to memory of 4444	4284	rundll32.exe	80
PID 4284 wrote to memory of 4444	4284	rundll32.exe	80
PID 4284 wrote to memory of 4444	4284	rundll32.exe	80
PID 4444 wrote to memory of 4640	4444	rundll32.exe	81
PID 4444 wrote to memory of 4640	4444	rundll32.exe	81
PID 4444 wrote to memory of 4640	4444	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\50cbca00cd028986ce1c332c8093cdd9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4284
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\50cbca00cd028986ce1c332c8093cdd9.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4444
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4640
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2132

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4968

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 0478b53bae63fdac319a40ff83d46f5bf51736cb36930f30c7ea54ec35b321e6
MD5 985ba4ef47df1da29ee4751ccbef41bd
SHA1 c3518542cd5328dbfe54cda103d57858965ccd10
SHA512 3a9c4c9388ccf3221ccdcfd552241df14c52279708aaed65ed40cf59ff46f589d7ae61ea6ac328afabd6d5904415e5e77c170bf08d83f2349642da08ba8c8f7f
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQm7YoG/QCL8yAH1plAHI:yDqPoBhz1aRxcSUDkxYoda8yAVp2HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 0478b53bae63fdac319a40ff83d46f5bf51736cb36930f30c7ea54ec35b321e6
MD5 985ba4ef47df1da29ee4751ccbef41bd
SHA1 c3518542cd5328dbfe54cda103d57858965ccd10
SHA512 3a9c4c9388ccf3221ccdcfd552241df14c52279708aaed65ed40cf59ff46f589d7ae61ea6ac328afabd6d5904415e5e77c170bf08d83f2349642da08ba8c8f7f
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQm7YoG/QCL8yAH1plAHI:yDqPoBhz1aRxcSUDkxYoda8yAVp2HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 0478b53bae63fdac319a40ff83d46f5bf51736cb36930f30c7ea54ec35b321e6
MD5 985ba4ef47df1da29ee4751ccbef41bd
SHA1 c3518542cd5328dbfe54cda103d57858965ccd10
SHA512 3a9c4c9388ccf3221ccdcfd552241df14c52279708aaed65ed40cf59ff46f589d7ae61ea6ac328afabd6d5904415e5e77c170bf08d83f2349642da08ba8c8f7f
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQm7YoG/QCL8yAH1plAHI:yDqPoBhz1aRxcSUDkxYoda8yAVp2HI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 3cb80529bef49f8fcaa87e3b40cdf3c79beeac3cde3d84e7eba25812ccf43842
MD5 34162f39d0401884115a772a8619cd45
SHA1 0a74ce265b922c0020acee72ddfebb0505e99f7c
SHA512 16dcbaa0ddc727f264bdfd378db49856b1055ce3e17f1eb7c27d758fdac607394c69f0c92d9bf31f6d39dd78a2f4856c368930be861ef1200309038af1dd6e1b
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQm7YoG/QCL8yAH1plAHj:QqPoBhz1aRxcSUDkxYoda8yAVp2Hj
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