wannacry | d0ef0a238e213de530802850440cafeb7ca7ce2c28111b949f6ce5af5086724e

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
02-07-2024 18:58

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General

Target

d0ef0a238e213de530802850440cafeb7ca7ce2c28111b949f6ce5af5086724e.dll
Size

5.0MB
MD5

9bb7c669afb9fff7c5b97b608f7a7103
SHA1

a943066c3d64c078a23e540606c90a61fd97fe8b
SHA256

d0ef0a238e213de530802850440cafeb7ca7ce2c28111b949f6ce5af5086724e
SHA512

ec5156b6b0137f6f5ba1c71b893d567d86e038f30a00094b51064ec37988e8969eb27c5017964bd91361117d4df88e5d3ad56e4fcd41d4886699a17504ba5dd1
SSDEEP

98304:d8qPoBhz1aRxcSUDk36SAEdhhP55Vp2H:d8qPe1Cxcxk3ZAEFV4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3369) 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
2952	mssecsvc.exe
2896	mssecsvc.exe
2660	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 System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

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 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 2204	2176	rundll32.exe	28
PID 2176 wrote to memory of 2204	2176	rundll32.exe	28
PID 2176 wrote to memory of 2204	2176	rundll32.exe	28
PID 2176 wrote to memory of 2204	2176	rundll32.exe	28
PID 2176 wrote to memory of 2204	2176	rundll32.exe	28
PID 2176 wrote to memory of 2204	2176	rundll32.exe	28
PID 2176 wrote to memory of 2204	2176	rundll32.exe	28
PID 2204 wrote to memory of 2952	2204	rundll32.exe	29
PID 2204 wrote to memory of 2952	2204	rundll32.exe	29
PID 2204 wrote to memory of 2952	2204	rundll32.exe	29
PID 2204 wrote to memory of 2952	2204	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d0ef0a238e213de530802850440cafeb7ca7ce2c28111b949f6ce5af5086724e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d0ef0a238e213de530802850440cafeb7ca7ce2c28111b949f6ce5af5086724e.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2204
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:2952
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2660

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2896

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

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
d56dcdedbf678fd06a4eecad53a09b3d

SHA1
3576408f638b830b6d2174fe74806dbbc520ff7c

SHA256
f312b1653d618d3b6488e246d16c8b58a7fdbdfae040c4c2a3cac968e2246c21

SHA512
ca9f4bb373912c278e538ef957572bbac7cf674351784eb8a1095274729bf225c9310c77c2bcbca99f9cfa6fa8659f836ce54934fa3fe838dbe262bd1b875270

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
0edcb23e1b4a14ea237c945034cc1fa5

SHA1
098c6bf0738c156f110f59a0fbee8807a13e8292

SHA256
56aa953e31a7aa71659f4fb9333de189014656810fe12de3b215db6bf2a53939

SHA512
2b623def457a31c48daefae21ad7e75a79504a07dc8229b628ed9054e3ebddbf0d8bf98697f6519133bde0723b78fc5c803f0968734cc4fbaae21d7c565cb366

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