wannacry | 6ae6c7e5c248bf15f16f50200591b49fee5a967ee6923a7a070c487edef7ce36

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
11-06-2024 16:11

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General

Target

9ec3170c7181621e1f861af2a4ecda6b_JaffaCakes118.dll
Size

5.0MB
MD5

9ec3170c7181621e1f861af2a4ecda6b
SHA1

17b2d2e917700590c8d6d935a911e4a1cb20e500
SHA256

6ae6c7e5c248bf15f16f50200591b49fee5a967ee6923a7a070c487edef7ce36
SHA512

e9811e4245a93b6f33b7c2a51554febcfd9c048c5def7cdef428ab5f283464544f327622a835410206d6b7bd2a479a6865081684f44c9de946afd0020fd4eadf
SSDEEP

98304:+DqPoBhz1/RxcSUDk36SAEdhvxWa9P593R8yAVp2H:+DqPe1pxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2686) 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

2232 mssecsvc.exe
2100 mssecsvc.exe
2616 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:

mssecsvc.exerundll32.exe

description ioc process

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

pid	process
2232	mssecsvc.exe
2100	mssecsvc.exe
2616	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.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 4060 wrote to memory of 4740	4060	rundll32.exe	rundll32.exe
PID 4060 wrote to memory of 4740	4060	rundll32.exe	rundll32.exe
PID 4060 wrote to memory of 4740	4060	rundll32.exe	rundll32.exe
PID 4740 wrote to memory of 2232	4740	rundll32.exe	mssecsvc.exe
PID 4740 wrote to memory of 2232	4740	rundll32.exe	mssecsvc.exe
PID 4740 wrote to memory of 2232	4740	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9ec3170c7181621e1f861af2a4ecda6b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4060

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9ec3170c7181621e1f861af2a4ecda6b_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4740

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2232

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2616

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:4036

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2100

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
35ecbdb339259c32061e266b21044e46

SHA1
76cf2b8db383c21a4d75831fcbeb4f8117c5b117

SHA256
eee04d5e53f7e656af273c1e67ec59fd17bf8f6a4826f53683f803e6347d13bb

SHA512
23540df035bb101d50a0cf1de4ac2875e9cbaaf9ab18ce2a4af6f7c94e13d9a94af6503620c87bfe6283da9e86c0b19e0fb378ccb8fd4785e707938721fe209f

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
824625f642157acd1ec61065a88dcbb8

SHA1
98c8c4af6e320ad58b59a062819eed61e87eb1f1

SHA256
bbccf5138be62684e4fba25f68beb39767a95ef7def084ee67e8baeae5c3423a

SHA512
e5c646ba68d6e5efd8d03b1aca2f5bdd6cd6ac33b48765a222c584b596a9320bba56b5ebbec827fcde4f97e8bcab12202f1cd472111e0bbc5173b5dd926bf6ba

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