wannacry | 73d898e47d23b82d3908ebe20d54a6e1313d33aef2bbcd80bd364a6173ea851e

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, 06:18

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General

Target
d53abde1757669161332ace2e512221c.dll
Size 5.0MB
Sample220720-g2l7gscfb3
SHA256 73d898e47d23b82d3908ebe20d54a6e1313d33aef2bbcd80bd364a6173ea851e
MD5 d53abde1757669161332ace2e512221c
SHA1 bdd1d4ec9da8200abe8d03ea29b9ac7ffb6648ef
SHA512 f44be24447434de85683f8ae20942fa646fb328c79080f5b6dd77c4365d1ea65fd531d4c7610bec7b0cbbff26452e18fb6382dc2fd54e28d3b27e36fa48a4792
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 (3140) 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 2 IoCs

pid	Process
4092	mssecsvr.exe
4360	mssecsvr.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\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1428 wrote to memory of 2732	1428	rundll32.exe	76
PID 1428 wrote to memory of 2732	1428	rundll32.exe	76
PID 1428 wrote to memory of 2732	1428	rundll32.exe	76
PID 2732 wrote to memory of 4092	2732	rundll32.exe	77
PID 2732 wrote to memory of 4092	2732	rundll32.exe	77
PID 2732 wrote to memory of 4092	2732	rundll32.exe	77

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d53abde1757669161332ace2e512221c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1428
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d53abde1757669161332ace2e512221c.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2732
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4092

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4360

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

mssecsvr.exe

Path C:\WINDOWS\mssecsvr.exe
Size 2.2MB
SHA256 cf0f23c7be326c2ad1f33700a44677946a78c509d6907521b5b086ac2950e668
MD5 db00af8596187cb164e567ee8d7bfed7
SHA1 e537f8517683871163b885ef5f287eb5e7074916
SHA512 b829eb70d460883910b19dfb1f3d7d95898195761bc70176f9d791dc38b015bbbf432ab3eb3e98d59fa4bdd7e4ddd32a9fabec608f4b2b1dd377f914bf0a96d9
SSDEEP 49152:QnsQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAORdhnvn:Q/qPoBhz1aRxcSUDk36SACdhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 cf0f23c7be326c2ad1f33700a44677946a78c509d6907521b5b086ac2950e668
MD5 db00af8596187cb164e567ee8d7bfed7
SHA1 e537f8517683871163b885ef5f287eb5e7074916
SHA512 b829eb70d460883910b19dfb1f3d7d95898195761bc70176f9d791dc38b015bbbf432ab3eb3e98d59fa4bdd7e4ddd32a9fabec608f4b2b1dd377f914bf0a96d9
SSDEEP 49152:QnsQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAORdhnvn:Q/qPoBhz1aRxcSUDk36SACdhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 cf0f23c7be326c2ad1f33700a44677946a78c509d6907521b5b086ac2950e668
MD5 db00af8596187cb164e567ee8d7bfed7
SHA1 e537f8517683871163b885ef5f287eb5e7074916
SHA512 b829eb70d460883910b19dfb1f3d7d95898195761bc70176f9d791dc38b015bbbf432ab3eb3e98d59fa4bdd7e4ddd32a9fabec608f4b2b1dd377f914bf0a96d9
SSDEEP 49152:QnsQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAORdhnvn:Q/qPoBhz1aRxcSUDk36SACdhvn
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