wannacry | 008e95f1485ce1bc0d4aab8b67cb8ee25f01b0d5d5d8503f7c062be97133786a

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
16-06-2024 02:38

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General

Target

b15e71b5a031527708989dfae13bc628_JaffaCakes118.dll
Size

5.0MB
MD5

b15e71b5a031527708989dfae13bc628
SHA1

968f15028490863d26fc18d13067c098420f9f37
SHA256

008e95f1485ce1bc0d4aab8b67cb8ee25f01b0d5d5d8503f7c062be97133786a
SHA512

6d87a3fd962af7ee3557db33cdf6fa491c4ec13aded99b5b75a53b5eaee477f17b4f06a981bfcbde3286d75184c56b9e166f6f67573e532aea5b07a9a6007536
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9ONuE:+DqPe1Cxcxk3ZAEUa

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2662) 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

4776 mssecsvc.exe
2248 mssecsvc.exe
4716 tasksche.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

pid	process
4776	mssecsvc.exe
2248	mssecsvc.exe
4716	tasksche.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
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

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4296 wrote to memory of 3972	4296	rundll32.exe	rundll32.exe
PID 4296 wrote to memory of 3972	4296	rundll32.exe	rundll32.exe
PID 4296 wrote to memory of 3972	4296	rundll32.exe	rundll32.exe
PID 3972 wrote to memory of 4776	3972	rundll32.exe	mssecsvc.exe
PID 3972 wrote to memory of 4776	3972	rundll32.exe	mssecsvc.exe
PID 3972 wrote to memory of 4776	3972	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b15e71b5a031527708989dfae13bc628_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4296

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b15e71b5a031527708989dfae13bc628_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3972

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4776

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4716

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2248

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
9cf00d9e192bab8f38daaa780492400a

SHA1
489951fddc8df27d10a4d0c7d5cc463fb7f41ff6

SHA256
5f2fc4508b53dd5afde0a841c04557a8f1f6a97be08d06f4b48a0396f1aa4c8b

SHA512
445faf1802925561e07665748da9cc44a34add4d19f04e09cb269b85f169bada47f39d4952e1e3cdabaad767569b3a56377537572e7215055a231f907bc3192b

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
74a5f72a542da4d1acd1aa303e2869e9

SHA1
9a50a3e43a1f46c66684e29b69e80a6052201995

SHA256
540002fbb56b070bcc4525299713a740d58c469b4201f963866702332a04f2c9

SHA512
0ed70f97d14b4eb2dc4cb3567ddd5d902fe355f89589a32942819cf89e935bc94cc984b7cd6266c2e82de3f919932e88abb3e8c76277e63ba00730aa73f14d5f

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