wannacry | 0ca55fe01cf52696f424100ee6de4e8dd262ce1c83257d22bc3edc42c30fb944

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, 01:17

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General

Target
769ec37bc4de51581ea222ef38d4f752.dll
Size 5.0MB
Sample220720-bnd13aaad8
SHA256 0ca55fe01cf52696f424100ee6de4e8dd262ce1c83257d22bc3edc42c30fb944
MD5 769ec37bc4de51581ea222ef38d4f752
SHA1 3db70422149469e299bf15a45bf4c6bc97a7031c
SHA512 695c79e1e0bef5395f78928b4275d927d0c3570554f976743235ca93299bc615a5a6408cfc68b19ad9ff6b8330bfef0f21221d048c2d210392796b267a022a24
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 (3280) 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
3576	mssecsvc.exe
4488	mssecsvc.exe
4564	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 5104 wrote to memory of 1748	5104	rundll32.exe	79
PID 5104 wrote to memory of 1748	5104	rundll32.exe	79
PID 5104 wrote to memory of 1748	5104	rundll32.exe	79
PID 1748 wrote to memory of 3576	1748	rundll32.exe	80
PID 1748 wrote to memory of 3576	1748	rundll32.exe	80
PID 1748 wrote to memory of 3576	1748	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\769ec37bc4de51581ea222ef38d4f752.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5104
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\769ec37bc4de51581ea222ef38d4f752.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1748
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3576
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4564

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4488

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 909994ae47c3512b079e50e2959afe3ffe36f698b5a8f7e82aee8b4fcf5474cc
MD5 938c72f8e4f17aacd8399294eef5ccb6
SHA1 2598c7b3f197f50abb4a337facedcce7cde40e31
SHA512 5cb83912c5780bfdb30b16cdbdb0fbe35c5ebac3db959d51a1040431aeb5c04d9866116b3b29f8422f37e98283a98b3a9969cef3828ff992f66451c62cac78db
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1H79xMq31iV5KPOry:XDqPoBhz1aRxcSUDfMS1/
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 909994ae47c3512b079e50e2959afe3ffe36f698b5a8f7e82aee8b4fcf5474cc
MD5 938c72f8e4f17aacd8399294eef5ccb6
SHA1 2598c7b3f197f50abb4a337facedcce7cde40e31
SHA512 5cb83912c5780bfdb30b16cdbdb0fbe35c5ebac3db959d51a1040431aeb5c04d9866116b3b29f8422f37e98283a98b3a9969cef3828ff992f66451c62cac78db
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1H79xMq31iV5KPOry:XDqPoBhz1aRxcSUDfMS1/
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 909994ae47c3512b079e50e2959afe3ffe36f698b5a8f7e82aee8b4fcf5474cc
MD5 938c72f8e4f17aacd8399294eef5ccb6
SHA1 2598c7b3f197f50abb4a337facedcce7cde40e31
SHA512 5cb83912c5780bfdb30b16cdbdb0fbe35c5ebac3db959d51a1040431aeb5c04d9866116b3b29f8422f37e98283a98b3a9969cef3828ff992f66451c62cac78db
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1H79xMq31iV5KPOry:XDqPoBhz1aRxcSUDfMS1/
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 de9af8502448d1b9f2fec43def7cda8b72f7b03571a162237850715e12ea97c2
MD5 94ed322315708f5a79d5ecbd0171f94e
SHA1 af6138631fa0692742171530af205d07fbca3e78
SHA512 c0746b2633eccabc46350d6e336bc25c755d1e478bc0154de8f1decc9cb028eb6a286351ec17668d267818a8fb1959c3d16d875e42f54daeeabde88e9a4382e3
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1H79xMq31iV5KPOrR:QqPoBhz1aRxcSUDfMS10
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