wannacry | 7e1df58e6f7f3f3fd062815a0a4e77e96f9d537846a81d7a29e6e5481fc3b13e

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
30/05/2024, 05:07

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General

Target
831e8a827985b4e3eb991495cbedb297_JaffaCakes118.dll
Size 5.0MB
Sample240530-fsalnagg25
SHA256 7e1df58e6f7f3f3fd062815a0a4e77e96f9d537846a81d7a29e6e5481fc3b13e
MD5 831e8a827985b4e3eb991495cbedb297
SHA1 634ff381e971e3a6793f08eea39cfdeedee9b3de
SHA512 cb28fd78474622c6f971bdb3e823e2f63881056ee5c6b5a990dd611953fdf3ed8d151ca359096b2dce2269190458574c97257e8476b0a6fccb010487a4177e91
SSDEEP 98304:d8qPoBhz1aRxcSUDk36SAEdhvxWa9P5wk2H:d8qPe1Cxcxk3ZAEUadKH
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 (3262) 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
3672	mssecsvc.exe
3232	mssecsvc.exe
3892	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\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 232	1360	rundll32.exe	82
PID 1360 wrote to memory of 232	1360	rundll32.exe	82
PID 1360 wrote to memory of 232	1360	rundll32.exe	82
PID 232 wrote to memory of 3672	232	rundll32.exe	83
PID 232 wrote to memory of 3672	232	rundll32.exe	83
PID 232 wrote to memory of 3672	232	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\831e8a827985b4e3eb991495cbedb297_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\831e8a827985b4e3eb991495cbedb297_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:232
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3672
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3892

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
PID:3232

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 b6fe5482ec4e435cf17d4d75df349aa5c940758578db947bbfaa87e9d181bbf8
MD5 ba663508bd1193d3b3fb2ce1ee47cc08
SHA1 9010efe55f18acee34e542e425980c609168efec
SHA512 795ece04d98012cd345cf3cf576ca1126bb62db40973b4288a0c2818f73465f6f47043a1cab389105b1d9d049a609a13dda48e286cd445c0a29a0511dd003f52
SSDEEP 98304:Z8qPoBhz1aRxcSUDk36SAEdhvxWa9P5wk2HI:Z8qPe1Cxcxk3ZAEUadKHI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 6fd793a20636b1c8fbbb2da3d4482028ac4dd6d7dbc91aa4f8e2717d4b83a85f
MD5 1e0a94ada52111f6e7be8e2500ccfc38
SHA1 7553af1252cc2b76c77a573052be13afae77a169
SHA512 0e752410b0af3c7ef8e6a11f1b96176c3c672618a3c07bcce7d4e466b7fa6a729d40d112ac7801267dc3230a82ec5dd5f36a0ad6547defed7f249ed65b0585d6
SSDEEP 98304:QqPoBhz1aRxcSUDk36SAEdhvxWa9P5wk2Hj:QqPe1Cxcxk3ZAEUadKHj
MD5 SHA1 SHA512 SSDEEP