wannacry | 26633440a6fb9b458ec75c1c8a1d21b4f6d557060986427286d4a3919969ed06

Resubmissions

29-05-2024 01:40

240529-b3vbladc4s 10

29-05-2024 00:28

240529-asb7labf99 10

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
29-05-2024 01:40

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General

Target

7eee0ef140a6b2e9818345521b49d238_JaffaCakes118.dll
Size

5.0MB
MD5

7eee0ef140a6b2e9818345521b49d238
SHA1

ca4616b808adf5df1c60bf5a885b45c2dd15ba74
SHA256

26633440a6fb9b458ec75c1c8a1d21b4f6d557060986427286d4a3919969ed06
SHA512

77cb3985bb250dc70c005ba4218108e66172773795fb046092fb1efa3f7d8302ea57f49ff6182ca9baffb923d65aec602ecee10009de7ef6d1764bae713381d0
SSDEEP

98304:d8qPoBhz1aRxcSU1ZWa9P593R8yAVp2H:d8qPe1CxcwadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3036) 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

1952 mssecsvc.exe
2340 mssecsvc.exe
2800 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

pid	process
1952	mssecsvc.exe
2340	mssecsvc.exe
2800	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

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

Processes:

rundll32.exemssecsvc.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 1 IoCs

Processes:

mssecsvc.exe

description ioc process

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

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1620 wrote to memory of 1864	1620	rundll32.exe	rundll32.exe
PID 1620 wrote to memory of 1864	1620	rundll32.exe	rundll32.exe
PID 1620 wrote to memory of 1864	1620	rundll32.exe	rundll32.exe
PID 1620 wrote to memory of 1864	1620	rundll32.exe	rundll32.exe
PID 1620 wrote to memory of 1864	1620	rundll32.exe	rundll32.exe
PID 1620 wrote to memory of 1864	1620	rundll32.exe	rundll32.exe
PID 1620 wrote to memory of 1864	1620	rundll32.exe	rundll32.exe
PID 1864 wrote to memory of 1952	1864	rundll32.exe	mssecsvc.exe
PID 1864 wrote to memory of 1952	1864	rundll32.exe	mssecsvc.exe
PID 1864 wrote to memory of 1952	1864	rundll32.exe	mssecsvc.exe
PID 1864 wrote to memory of 1952	1864	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7eee0ef140a6b2e9818345521b49d238_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1620

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7eee0ef140a6b2e9818345521b49d238_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1864

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1952

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2800

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:2340

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2268

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2568

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

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
6f5dacb129d36626f2011188a7eacda1

SHA1
2437c6979146ef34dd590dd83d228c8aeee35360

SHA256
0836cb4ff7126e41caf2228bb9a58ede203f07991bea367c4cbf9c8e887ab1ba

SHA512
c297e21803707c96348c1cc258a198b38b47b9b2771727d51bb43875b8c2d9c2d28a3e24711992e04717529017b1e5799e55ac451bcda75c762148c8650056bb

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
bbd5962cbd3ef7a7b489981b56f3bd40

SHA1
31e14394d4c98558c1bec3540bde939e68f813bf

SHA256
da7ea50b4767c610db8a81d5d514a8191c770bf1433b074b75813de85234fa52

SHA512
634cf43ecbd74aabe8e992611065d686ec5db369f9eac80527c67adf3360ae207f8baf78c5d4dd31c36e6725be10501220316ca37085a8927cac56784d444cae

Download Submit