wannacry | b98ea070bdf32968bc3784bf3847019c0fa559c0c230a9b9bf15360dc6f413f3

Analysis

max time kernel
151s
max time network
155s
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, 02:27

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General

Target
64831891366685c257a9f71a83830166.dll
Size 5.0MB
Sample220720-cxffxsbehp
SHA256 b98ea070bdf32968bc3784bf3847019c0fa559c0c230a9b9bf15360dc6f413f3
MD5 64831891366685c257a9f71a83830166
SHA1 b11969f7f94c9761fbc77d0069c55f8e01cccdd8
SHA512 68f60ca07a472bac1f8e17557e2d7edbf06f4df0ff2f293319926c416b80ba61fa07e7f7830a6a2c1bb8d455157bcdddef80941e5add5330b6bb487f4a3ded43
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 (3117) 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
404	mssecsvr.exe
716	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 2408 wrote to memory of 3048	2408	rundll32.exe	82
PID 2408 wrote to memory of 3048	2408	rundll32.exe	82
PID 2408 wrote to memory of 3048	2408	rundll32.exe	82
PID 3048 wrote to memory of 404	3048	rundll32.exe	83
PID 3048 wrote to memory of 404	3048	rundll32.exe	83
PID 3048 wrote to memory of 404	3048	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\64831891366685c257a9f71a83830166.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\64831891366685c257a9f71a83830166.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:404

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:716

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 736d89cef218e0cf69a5e27431eeefe95f8981ddec23f7103ca1551adfa570b3
MD5 f22e0d67f6223a1a3b6757c0825f3729
SHA1 80f0df615b32e684dfe3750432e0a1401ff4efe0
SHA512 c7073c1f388474b023cf4f5b030c7219e375ef8c31d60e435f577f6658836f7120d878c80bfe10428481945ccdf91a7c3f3fc44164b659cd943698626373311a
SSDEEP 49152:VnFQqMSPbcBVQejl1INRx+TSqTdX1HkQo6SAARdhnvn:ZeqPoBhh1aRxcSUDk36SAEdhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 736d89cef218e0cf69a5e27431eeefe95f8981ddec23f7103ca1551adfa570b3
MD5 f22e0d67f6223a1a3b6757c0825f3729
SHA1 80f0df615b32e684dfe3750432e0a1401ff4efe0
SHA512 c7073c1f388474b023cf4f5b030c7219e375ef8c31d60e435f577f6658836f7120d878c80bfe10428481945ccdf91a7c3f3fc44164b659cd943698626373311a
SSDEEP 49152:VnFQqMSPbcBVQejl1INRx+TSqTdX1HkQo6SAARdhnvn:ZeqPoBhh1aRxcSUDk36SAEdhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 736d89cef218e0cf69a5e27431eeefe95f8981ddec23f7103ca1551adfa570b3
MD5 f22e0d67f6223a1a3b6757c0825f3729
SHA1 80f0df615b32e684dfe3750432e0a1401ff4efe0
SHA512 c7073c1f388474b023cf4f5b030c7219e375ef8c31d60e435f577f6658836f7120d878c80bfe10428481945ccdf91a7c3f3fc44164b659cd943698626373311a
SSDEEP 49152:VnFQqMSPbcBVQejl1INRx+TSqTdX1HkQo6SAARdhnvn:ZeqPoBhh1aRxcSUDk36SAEdhvn
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