wannacry | 510203ff4298ac898aa7aaeb86463873ae176386a6f59d3782d51047b502ee60

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
25-05-2024 09:06

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General

Target

717b007a1acd713cd369a3c736fe30fb_JaffaCakes118.dll
Size

5.0MB
MD5

717b007a1acd713cd369a3c736fe30fb
SHA1

75c47834540254dc6907a1431526bb084f70d929
SHA256

510203ff4298ac898aa7aaeb86463873ae176386a6f59d3782d51047b502ee60
SHA512

70fd6e0fb4621b84815ceb5dab1eb3bbd9a963af6613942d1fd9d26b60333f1cfbe173058cafac454e0648e91dc88e2fc72f7299248c64853cc5d70117ec5449
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+:SnAQqMSPbcBVQej/1INRx+

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3327) 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

892 mssecsvc.exe
864 mssecsvc.exe
3408 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
892	mssecsvc.exe
864	mssecsvc.exe
3408	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\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
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2228 wrote to memory of 2940	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 2940	2228	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 2940	2228	rundll32.exe	rundll32.exe
PID 2940 wrote to memory of 892	2940	rundll32.exe	mssecsvc.exe
PID 2940 wrote to memory of 892	2940	rundll32.exe	mssecsvc.exe
PID 2940 wrote to memory of 892	2940	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\717b007a1acd713cd369a3c736fe30fb_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2228

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\717b007a1acd713cd369a3c736fe30fb_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2940

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:892

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3408

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:864

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=4432,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=4612 /prefetch:8
1⤵
PID:3756

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

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
306c59f3737f76822e995cfd2075acaa

SHA1
9290429aff55289bb681e230fee19dc3d7a3387c

SHA256
a10ef4f3d2f81a1d38bac2bb959f541972957ac8f87601bc0df543d59a3757e7

SHA512
2902cc31cf2d7328afdea6e2c768538abb55075a3a625b3025879e631ac92022848238a306ca973602423c00ca317252925362037657af6518bb6adcb9655903

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
2ba1e1fe207489a1347e5798421ac2e7

SHA1
6125b99205432e9d2c555cb36cb96572a881e65e

SHA256
fce7b7a7832abcd02295e4d339fbe5b5d73d46bc3b577123a364d1c39e423888

SHA512
09c3f03e19a51e56918c650cb2e62b1004e14d53e42bd117b2f9864abf53110c594bf139c6a84ccff1968ffb7eab875319b36b9a78f834172bd958f95fa5e494

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