wannacry | b57cef2207b4c476d7f6318c9f4077de33edfc503f665d41a40312ece6e49cef

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 06:19

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
49c498acf0c583595d5c5e2c3fef0200_JaffaCakes118.dll
Size 5.0MB
Sample240516-g3f2vsga22
SHA256 b57cef2207b4c476d7f6318c9f4077de33edfc503f665d41a40312ece6e49cef
MD5 49c498acf0c583595d5c5e2c3fef0200
SHA1 5010058428969b59237d4dad86d153b30e371cb3
SHA512 1461c5ca8ec9a633424cd9fec9a478fb28c2fc593b60eecf35107dd9c689fa63e2fe1cdacb6f64405a633a3e1e12f72ce1ec8f42d4939a6c08c28ec7a7ff6abf
SSDEEP 98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVpNZ:+DqPe1Cxcxk3ZAEUadzR8ycPZ
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 (3354) 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
1892	mssecsvc.exe
4440	mssecsvc.exe
4340	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

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 3396 wrote to memory of 2344	3396	rundll32.exe	82
PID 3396 wrote to memory of 2344	3396	rundll32.exe	82
PID 3396 wrote to memory of 2344	3396	rundll32.exe	82
PID 2344 wrote to memory of 1892	2344	rundll32.exe	83
PID 2344 wrote to memory of 1892	2344	rundll32.exe	83
PID 2344 wrote to memory of 1892	2344	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\49c498acf0c583595d5c5e2c3fef0200_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3396
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\49c498acf0c583595d5c5e2c3fef0200_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2344
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1892
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4340

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4440

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

Loading Replay Monitor...

Downloads

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 f2e361acaf8ae1979631e4c8f342031c8ea7471a2070a2dda178505aef66bb8c
MD5 5d9a60c1f45f422845e5108cf64eb7d9
SHA1 ab511f11e223bb7d5a3e9c64e483955c05194be4
SHA512 d809b4242d36ce883388c8ce434f50d15983fe578d74d1cb99281bc86ad48b0c5f4cc6904e875eee5cbbd9dbb0cde3c00031f5243c9e333de6ff0bf26b067dde
SSDEEP 98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVpNZI:yDqPe1Cxcxk3ZAEUadzR8ycPZI
MD5 SHA1 SHA512 SSDEEP

Submit Download

tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 d593bae40846d01f55298e9895e73a04fc2cfe30c10c73137a13a606f73aa4b7
MD5 aaba1688ece046cbb17a90654c595c7d
SHA1 ed16f59fbf889278b34744c33503ed16a4261543
SHA512 82748e20887bcb46b9e8cab20972e106604a8dd0dd521bbefb5473cb098e818b8f9c8687e1408f0c1f8684e5dd5e6452dda7f3d0166a85033425ff635a949c6a
SSDEEP 98304:QqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVpNZj:QqPe1Cxcxk3ZAEUadzR8ycPZj
MD5 SHA1 SHA512 SSDEEP