wannacry | 48cf10482fe8c4889af0cec78b1fd150f8c1000489bef8dc5901e7b3352fe606

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15/05/2024, 03:15

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General

Target
4452dff4105d0b6a018a79c5cb1e8b6a_JaffaCakes118.dll
Size 5.0MB
Sample240515-dsdxzaef2t
SHA256 48cf10482fe8c4889af0cec78b1fd150f8c1000489bef8dc5901e7b3352fe606
MD5 4452dff4105d0b6a018a79c5cb1e8b6a
SHA1 41e12143ca41646fa37ef414825aa734f2a6668d
SHA512 1a92f730097becdf524b47500df769500d136203ac00273ecaaeab7eee61310d2f669f00c33b07c11eca4040c7346f16ea3b96f8f1c4e95e2dbe349715b33bdb
SSDEEP 24576:SbLgddQhfdmMSirYbcMNgef0QeQjG/D8kI+X6SASk+Kwt/8uME7:SnAQqMSPbcBVQej/v6SAAj3R
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3229) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 3 IoCs

pid	Process
1984	mssecsvc.exe
4420	mssecsvc.exe
764	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 Discovery
T1046

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.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 3144 wrote to memory of 1892	3144	rundll32.exe	82
PID 3144 wrote to memory of 1892	3144	rundll32.exe	82
PID 3144 wrote to memory of 1892	3144	rundll32.exe	82
PID 1892 wrote to memory of 1984	1892	rundll32.exe	83
PID 1892 wrote to memory of 1984	1892	rundll32.exe	83
PID 1892 wrote to memory of 1984	1892	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4452dff4105d0b6a018a79c5cb1e8b6a_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3144
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4452dff4105d0b6a018a79c5cb1e8b6a_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1892
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1984
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:764

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 1815d1c8accd5e4c90010480c99704263f1d2d3a9ac17e892200c21db10d39e1
MD5 8ecb3e94b13d9adf4f1f3fb73bda7524
SHA1 a14bdf8e4d9c72240ab0292b24a313c71371a3fb
SHA512 f4335258337bdfed56b96cc0426238ffff9bf4a8fe280dead4be448650cd5e63c4520204fbf3e9eff847d30eeef27fbedc1dbb1bfbe2fcc210bbf787e1d012e8
SSDEEP 24576:2bLgddQhfdmMSirYbcMNgef0QeQjG/D8kI+X6SASk+Kwt/8uME7S:2nAQqMSPbcBVQej/v6SAAj3R+
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 9045b7e068ce16f5b6db3c4894c75441ae3918a3a7b92883e83e55d1bcbbd97d
MD5 dfaae837779680ac56bf9ebe0258296a
SHA1 d8bcc233546ac8259f80ac4b82d8dface9f38264
SHA512 76b63cbdb7c204b46cd7d290912d9f679d973752006109ecc500925a4a7c1a74c91d53a7a93c3b8b8ad8b1671b885670af21904fbbb8fa1ca551a4b9d1f63f49
SSDEEP 24576:nQhfdmMSirYbcMNgef0QeQjG/D8kI+X6SASk+Kwt/8uME7I:nQqMSPbcBVQej/v6SAAj3RE
MD5 SHA1 SHA512 SSDEEP