wannacry | 3aef98f047e5e65351a18e84cd10a42a092915acb89a446bade7e12a97a5c816

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, 05:15

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General

Target
ec905346a1cd50a09d5cee5a0eda2b35.dll
Size 5.0MB
Sample220720-fxkmescffr
SHA256 3aef98f047e5e65351a18e84cd10a42a092915acb89a446bade7e12a97a5c816
MD5 ec905346a1cd50a09d5cee5a0eda2b35
SHA1 e83449a6acfa5eaa8c0e07be108ab6f82e6d2448
SHA512 68180c9ecbd6e008672ba351d693804b330be64c07e871abb6db60f0c23a23767d7024d79e8d0bf436e28b2e1eab2db71c8af3be3b838ca67f4502adb620dc47
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 (3219) 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
4192	mssecsvc.exe
456	mssecsvc.exe
1796	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 3196 wrote to memory of 1420	3196	rundll32.exe	80
PID 3196 wrote to memory of 1420	3196	rundll32.exe	80
PID 3196 wrote to memory of 1420	3196	rundll32.exe	80
PID 1420 wrote to memory of 4192	1420	rundll32.exe	81
PID 1420 wrote to memory of 4192	1420	rundll32.exe	81
PID 1420 wrote to memory of 4192	1420	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ec905346a1cd50a09d5cee5a0eda2b35.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3196
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ec905346a1cd50a09d5cee5a0eda2b35.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1420
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4192
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1796

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:456

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 eac305546cc67aa45de8d6fe57af524b6e7245f6f7a1862e444bbe8ef2f345d3
MD5 2dcbbb9a4b69563e6b262d357aaf46e8
SHA1 115a276323672cc68871d373091fe40cfb0c67ec
SHA512 0d6ae1dcbe7d2c9c1660b5fe83f8c3482330dbf6366d74a1041b05f5abad24ba957ccdacafdd7d07a8d80a1d0618afaf0282e1784b25ec8d530ea47bc5f47344
SSDEEP 98304:XDqPoBhz1aRxcSUDk36SAEdhvxWa9P59358yAVp2HI:XDqPe1Cxcxk3ZAEUadz58yc4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 eac305546cc67aa45de8d6fe57af524b6e7245f6f7a1862e444bbe8ef2f345d3
MD5 2dcbbb9a4b69563e6b262d357aaf46e8
SHA1 115a276323672cc68871d373091fe40cfb0c67ec
SHA512 0d6ae1dcbe7d2c9c1660b5fe83f8c3482330dbf6366d74a1041b05f5abad24ba957ccdacafdd7d07a8d80a1d0618afaf0282e1784b25ec8d530ea47bc5f47344
SSDEEP 98304:XDqPoBhz1aRxcSUDk36SAEdhvxWa9P59358yAVp2HI:XDqPe1Cxcxk3ZAEUadz58yc4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 eac305546cc67aa45de8d6fe57af524b6e7245f6f7a1862e444bbe8ef2f345d3
MD5 2dcbbb9a4b69563e6b262d357aaf46e8
SHA1 115a276323672cc68871d373091fe40cfb0c67ec
SHA512 0d6ae1dcbe7d2c9c1660b5fe83f8c3482330dbf6366d74a1041b05f5abad24ba957ccdacafdd7d07a8d80a1d0618afaf0282e1784b25ec8d530ea47bc5f47344
SSDEEP 98304:XDqPoBhz1aRxcSUDk36SAEdhvxWa9P59358yAVp2HI:XDqPe1Cxcxk3ZAEUadz58yc4HI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 149b43f1ebaf4ce9400020521fd7bd74f99f03f1eaa2e66a3df53c0c52565799
MD5 6803f13093775593eebb1ece792811d0
SHA1 2f0293a04d0503480c4c5399d80aba08c9418786
SHA512 92660ee9d12a43848a753afaf36de7ebf60c686db17b502b19a1dfedf88b009925abc9dbbc9b42d45e77621a7e8b671e7be6202e1d733a313c18c1668993599a
SSDEEP 98304:QqPoBhz1aRxcSUDk36SAEdhvxWa9P59358yAVp2Hj:QqPe1Cxcxk3ZAEUadz58yc4Hj
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