wannacry | b95ce7cf432b0a9af6affc3637c377b7aea5da351b433513e4136f4741a43357

Analysis

max time kernel
153s
max time network
174s
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, 02:23

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General

Target
17709dc17f56a851a189204c7845d0e9.dll
Size 5.0MB
Sample220720-ct576sbean
SHA256 b95ce7cf432b0a9af6affc3637c377b7aea5da351b433513e4136f4741a43357
MD5 17709dc17f56a851a189204c7845d0e9
SHA1 aef64fac37eb172d9e4d74c3f9d309fb0f2d012d
SHA512 d61f03ff5410f49b848d4cab512565267366f482944afb512adcef8b28395cf971556a2f05382f6636ac59d2209d4ba3e5535620277d8e90e14c49b1a084b305
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 (3067) 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
1328	mssecsvc.exe
1420	mssecsvc.exe
4464	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\AutoDetect = "0"	mssecsvc.exe
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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 896 wrote to memory of 3548	896	rundll32.exe	79
PID 896 wrote to memory of 3548	896	rundll32.exe	79
PID 896 wrote to memory of 3548	896	rundll32.exe	79
PID 3548 wrote to memory of 1328	3548	rundll32.exe	80
PID 3548 wrote to memory of 1328	3548	rundll32.exe	80
PID 3548 wrote to memory of 1328	3548	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\17709dc17f56a851a189204c7845d0e9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:896
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\17709dc17f56a851a189204c7845d0e9.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3548
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1328
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4464

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1420

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 c6f7834e99ae0d66c10f4996cfde6ea08b4b11c6779ae809b784f750dacce1d5
MD5 3722eb1a54af89634b8a80965de5c831
SHA1 e2eb42851acc61c8912da1a6d532e4822ca9d73a
SHA512 fc74f087e1813b05e1ef5bb5e282b6e70f00efc63b6a3beabad29b8c9db83a082cf7b276a8725b12a70cb5f7378dc7bb2b2cbf0c79b33f90aaa870d3295ab8a8
SSDEEP 24576:2bLgddQhfdmMSirYbcMNgef056M+ouME7A4kqAH1pNZtA0p+9XEkI:2nAQqMSPbcBVF+xR8yAH1plAHI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 c6f7834e99ae0d66c10f4996cfde6ea08b4b11c6779ae809b784f750dacce1d5
MD5 3722eb1a54af89634b8a80965de5c831
SHA1 e2eb42851acc61c8912da1a6d532e4822ca9d73a
SHA512 fc74f087e1813b05e1ef5bb5e282b6e70f00efc63b6a3beabad29b8c9db83a082cf7b276a8725b12a70cb5f7378dc7bb2b2cbf0c79b33f90aaa870d3295ab8a8
SSDEEP 24576:2bLgddQhfdmMSirYbcMNgef056M+ouME7A4kqAH1pNZtA0p+9XEkI:2nAQqMSPbcBVF+xR8yAH1plAHI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 c6f7834e99ae0d66c10f4996cfde6ea08b4b11c6779ae809b784f750dacce1d5
MD5 3722eb1a54af89634b8a80965de5c831
SHA1 e2eb42851acc61c8912da1a6d532e4822ca9d73a
SHA512 fc74f087e1813b05e1ef5bb5e282b6e70f00efc63b6a3beabad29b8c9db83a082cf7b276a8725b12a70cb5f7378dc7bb2b2cbf0c79b33f90aaa870d3295ab8a8
SSDEEP 24576:2bLgddQhfdmMSirYbcMNgef056M+ouME7A4kqAH1pNZtA0p+9XEkI:2nAQqMSPbcBVF+xR8yAH1plAHI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 9c1d6a200e81b34fe4e741b85d6f221a84551176895afd6d93ef6d22219bc32a
MD5 849eda64d2a3b873c32f7971410406c7
SHA1 a732381f957b7cda94f4fa9f6e59009c69d6e2d9
SHA512 a2c2aa9db27beca6e1a47bc7d3e5f100994b1ac8e5e4d57155a122f5f73fec195968a6e0a774dfa22fcda1f465a05c5997e5a0952c3661c9a2dd4364c66001de
SSDEEP 24576:nQhfdmMSirYbcMNgef056M+ouME7A4kqAH1pNZtA0p+9XEkj:nQqMSPbcBVF+xR8yAH1plAHj
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