wannacry | b4ce551d5c51cfaca6376addb4bf1d8dbfa591cd8ed30b0ed7e6b5404256c711

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
25-05-2024 02:04

Target

7086808c7c91e32ed4516e7a0875ded7_JaffaCakes118.dll
Size

5.0MB
MD5

7086808c7c91e32ed4516e7a0875ded7
SHA1

57a46df867d7edd63f4cd65aeac2b64cf686ebfa
SHA256

b4ce551d5c51cfaca6376addb4bf1d8dbfa591cd8ed30b0ed7e6b5404256c711
SHA512

c2f118f72a42bc66fdc210b5e162359851b9472862533b71a6ab076ac11ac7f94d14fd679d1a36164532ea435a91f0ff2d3efdc976b2926b1edc67953a5ec3be
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593RRI:+DqPe1Cxcxk3ZAEUadzRR

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3334) 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

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

4016 mssecsvc.exe
3692 mssecsvc.exe
3256 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

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

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

Processes:

mssecsvc.exe

description	ioc	process
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
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1724 wrote to memory of 5032	1724	rundll32.exe	rundll32.exe
PID 1724 wrote to memory of 5032	1724	rundll32.exe	rundll32.exe
PID 1724 wrote to memory of 5032	1724	rundll32.exe	rundll32.exe
PID 5032 wrote to memory of 4016	5032	rundll32.exe	mssecsvc.exe
PID 5032 wrote to memory of 4016	5032	rundll32.exe	mssecsvc.exe
PID 5032 wrote to memory of 4016	5032	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7086808c7c91e32ed4516e7a0875ded7_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7086808c7c91e32ed4516e7a0875ded7_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:5032
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4016
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3256

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
2f06a5c0ec2e4b2b44267ff86f69a9f1

SHA1
bc3b22ec606a89e68005e12857b660e63e07bf39

SHA256
51e8f4371093b45e54e658cc348dca17b9fc06db7f91210ecc9494a36de8ceed

SHA512
a9715e24f046b4f401e9ac530b097b15c5ec2c84837a72ddb6894869caadb237e41f715fa7a46a336ba6a6e3122e7af2da0020b8284414b636a05087de4dcdda

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
487ebfcdca8b103934e1bf138bac5eab

SHA1
55df5fa9b3e9ef5896319a32aa5040282fd617fb

SHA256
6fc518e70dbb031f47bbe4b101a0c314c318772f4c5230134c5086fdc0d8979c

SHA512
d5833f025f6923fd1a1846247c8e70fc840d089859615bc4f6ee4ba42a4365cd2e898700977da5a1bdcc7af46811bf283e1e374bf4d8f7e1555472487dc36d64

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