wannacry | e26fb8cb9a68760bfc1d11a46353b2cc60d5e8a6ec05c0e66cdc1d103bb273ee

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
15-06-2024 18:36

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General

Target

afce4024d50fb1ddd4050f7822a89dc6_JaffaCakes118.dll
Size

5.0MB
MD5

afce4024d50fb1ddd4050f7822a89dc6
SHA1

434718ed8962d74765e296177eb9df1fb4e5231d
SHA256

e26fb8cb9a68760bfc1d11a46353b2cc60d5e8a6ec05c0e66cdc1d103bb273ee
SHA512

002da99e2a40d1b6a277b7111df841cf2b5b6bc08ca1ef4f1ea2377c5838ffd9c142e98e2f61e8142a5b62bea3ceecf934406324e0c5b10b890446f57e2122c0
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAd593R8yAVp2H:TDqPe1Cxcxk3ZAdzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3341) 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

3460 mssecsvc.exe
4688 mssecsvc.exe
396 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

pid	process
3460	mssecsvc.exe
4688	mssecsvc.exe
396	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
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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2976 wrote to memory of 3580	2976	rundll32.exe	rundll32.exe
PID 2976 wrote to memory of 3580	2976	rundll32.exe	rundll32.exe
PID 2976 wrote to memory of 3580	2976	rundll32.exe	rundll32.exe
PID 3580 wrote to memory of 3460	3580	rundll32.exe	mssecsvc.exe
PID 3580 wrote to memory of 3460	3580	rundll32.exe	mssecsvc.exe
PID 3580 wrote to memory of 3460	3580	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\afce4024d50fb1ddd4050f7822a89dc6_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2976

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\afce4024d50fb1ddd4050f7822a89dc6_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3580

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3460

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:396

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4688

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 --field-trial-handle=4092,i,3549704109630749084,1975543916261970610,262144 --variations-seed-version --mojo-platform-channel-handle=4060 /prefetch:8
1⤵
PID:596

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
25d75192ff35864f849b3f4a8837365d

SHA1
9bbacf2758c9bb57761f05a3a2fb090269056429

SHA256
32e176c5ede6aafcfda4cf28c3c6bb3975863a61606bf379ddc296c347bac402

SHA512
aa578b082fef36a632af3a988a6fef59a4f83a9619e85019431cbcbfd6c9af60623f67953b95c642d63f3150e5a081bfeb9375c52795083d63a5bb272297e514

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
8ed1724a90dce0e228f1f38fb9ec17a3

SHA1
5e43f87e0ef231c4ff8f46f5ccdcdeec0b285380

SHA256
f86bea510f55a64b9b5ce0277e506c8434f3ba7d8682d77a3f34d97705dc575b

SHA512
b4cbf0a8fcb18a85127b739db02ae42360bbb3b72f971dbd9f0e3034370a62ec53daf0591d77d64653ce475de703c7b0924f2a4d4ebbd9aab8b63d94ed826ab0

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