wannacry | f481c567094d1a2777b52fa81b7ae1becb4352e6ef1d02e6a17765806daab1d7

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
15-06-2024 07:42

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General

Target

ad5ff179e68ed35256c984950591fe9b_JaffaCakes118.dll
Size

5.0MB
MD5

ad5ff179e68ed35256c984950591fe9b
SHA1

fd7989ee0db90d1bcc73a887d290d78758423964
SHA256

f481c567094d1a2777b52fa81b7ae1becb4352e6ef1d02e6a17765806daab1d7
SHA512

d677fcee4d8f4060f2004dd523e924933b2397c45b9c3a2b720d2306daac10c73c08b8a45d31ecea4666a56aeb786ec584df582517e0a9a68ef5460a2d421ae5
SSDEEP

98304:+DqPoBhz1aRxcSUZk36SAclNw/9GkSM3:+DqPe1Cxc7k3ZAcoS

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2687) 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

3744 mssecsvc.exe
4100 mssecsvc.exe
4684 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
3744	mssecsvc.exe
4100	mssecsvc.exe
4684	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 212 wrote to memory of 4040	212	rundll32.exe	rundll32.exe
PID 212 wrote to memory of 4040	212	rundll32.exe	rundll32.exe
PID 212 wrote to memory of 4040	212	rundll32.exe	rundll32.exe
PID 4040 wrote to memory of 3744	4040	rundll32.exe	mssecsvc.exe
PID 4040 wrote to memory of 3744	4040	rundll32.exe	mssecsvc.exe
PID 4040 wrote to memory of 3744	4040	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ad5ff179e68ed35256c984950591fe9b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:212

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ad5ff179e68ed35256c984950591fe9b_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4040

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3744

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4684

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4252,i,7012731823941922179,12386606396608877869,262144 --variations-seed-version --mojo-platform-channel-handle=4248 /prefetch:8
1⤵
PID:4272

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4100

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
945668fe3772357cb8d6ce144b441e78

SHA1
babee5c9880e4fc87a193ae5d5cd8873c6c7cac0

SHA256
359e0487cf6a22cd9c7736ac09c3eee0d616d38fd62e2fd4e52552f7adb18d7d

SHA512
6acb2828fbdb1c586c6ad5f4b1241310089c62f8369a57b97c0237fcdd601a2f9d7b2ed66d7c13bd584c293f1d79356d187de82a443473bde3f9d9cbfa68d263

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
3361ca997164f29dcc3a75ffc9b0c6fe

SHA1
0cd5d7d4aa10e1d1280f7d884cac3c5eb13b3539

SHA256
840686221c9c5c28a2ed2adda6f46f89e726aef1a6a1ff33c88be22cf81508a5

SHA512
7f229102f020549b15d7c2c5ecc4b651a46fe787da866f9a549b6ef67da9605c3c0aa47eaaab7752a09f53bbc1d977bea82e7510278f105f6e73a66ecfba35a3

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