wannacry | 136405b165c6eec8be85c59075f98012d8fe5cf802328e47d3228e99f5897170

Analysis

max time kernel
150s
max time network
153s
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, 01:03

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General

Target
9a1ae1d496ead541d17cfc3a0e3c5eef.dll
Size 5.0MB
Sample220720-becrmsadhq
SHA256 136405b165c6eec8be85c59075f98012d8fe5cf802328e47d3228e99f5897170
MD5 9a1ae1d496ead541d17cfc3a0e3c5eef
SHA1 502ca1a6a02620673685f7b55161ce7889e828aa
SHA512 12f73b3ab7fe5a766dee4185f407a13039ca7123bf66a7109b81d9abda96234c91e38ed49743bb3ae2b4bdc94bc716220aad38c40a7ec47b4a46226411d02224
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 (2564) 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
3588	mssecsvc.exe
4076	mssecsvc.exe
4236	tasksche.exe

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 2856 wrote to memory of 3432	2856	rundll32.exe	79
PID 2856 wrote to memory of 3432	2856	rundll32.exe	79
PID 2856 wrote to memory of 3432	2856	rundll32.exe	79
PID 3432 wrote to memory of 3588	3432	rundll32.exe	80
PID 3432 wrote to memory of 3588	3432	rundll32.exe	80
PID 3432 wrote to memory of 3588	3432	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9a1ae1d496ead541d17cfc3a0e3c5eef.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9a1ae1d496ead541d17cfc3a0e3c5eef.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3432
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3588
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4236

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4076

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 c7db8417f567a78f29a2f51271d9f06f04bdb6e6ae69af3e6ae41559e402683c
MD5 7a4e4cd532a9916b9fd9d9a716629b54
SHA1 1f4acecf328d030b4d112bae17e76722672e8566
SHA512 ffa8e059add74c35e1437c4d0786dbc3a43162663f775b2b106c81488fad137e4c36478f2cd4f5c9b8aad8fcf1ef80346c6654902a71ce18d001c098c5119a1d
SSDEEP 98304:yDqPoBBz1aRxcSUZk36SAEdhvxWa9P593R8yAVp2HI:yDqP+1Cxc7k3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 c7db8417f567a78f29a2f51271d9f06f04bdb6e6ae69af3e6ae41559e402683c
MD5 7a4e4cd532a9916b9fd9d9a716629b54
SHA1 1f4acecf328d030b4d112bae17e76722672e8566
SHA512 ffa8e059add74c35e1437c4d0786dbc3a43162663f775b2b106c81488fad137e4c36478f2cd4f5c9b8aad8fcf1ef80346c6654902a71ce18d001c098c5119a1d
SSDEEP 98304:yDqPoBBz1aRxcSUZk36SAEdhvxWa9P593R8yAVp2HI:yDqP+1Cxc7k3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 c7db8417f567a78f29a2f51271d9f06f04bdb6e6ae69af3e6ae41559e402683c
MD5 7a4e4cd532a9916b9fd9d9a716629b54
SHA1 1f4acecf328d030b4d112bae17e76722672e8566
SHA512 ffa8e059add74c35e1437c4d0786dbc3a43162663f775b2b106c81488fad137e4c36478f2cd4f5c9b8aad8fcf1ef80346c6654902a71ce18d001c098c5119a1d
SSDEEP 98304:yDqPoBBz1aRxcSUZk36SAEdhvxWa9P593R8yAVp2HI:yDqP+1Cxc7k3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 6c265b91de4cbd01931120236dd412fed943a774ba11de9f86d55a395838a042
MD5 98f29c78a11cd9ef33dd088279be1546
SHA1 6044a0e9c0beea4014cde01967d8dff9bb4fa4ca
SHA512 2e13cb4f5e2d7848fb644f45d40370ff2269743f7995dbccaed8b9a44cb34f8de34af1b35cafebea9932500ebdafc43a6f18897465bf794923e940d807b131ab
SSDEEP 98304:QqPoBBz1aRxcSUZk36SAEdhvxWa9P593R8yAVp2Hj:QqP+1Cxc7k3ZAEUadzR8yc4Hj
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