wannacry | 3309eca5ad0c78fe84377bd3d30627d7f969e6542012e97a53b5dc9ed1d2f227

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
27-05-2024 11:16

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General

Target

78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe
Size

3.6MB
MD5

78f8bf2607bd58232157b444a11f1b14
SHA1

5d82908aa114e962d48cab4ce0485740a7f27a2e
SHA256

3309eca5ad0c78fe84377bd3d30627d7f969e6542012e97a53b5dc9ed1d2f227
SHA512

40197feda797b70647716f13099a8c3993c36c0f10ee2c0215144a11fe4af1cdce0a5775b03454889ab2e17cf8c8f6da6e47eb4024393c2db536778e84546acd
SSDEEP

49152:VnjJMSPbcBb/1INRx+TSqTdX1HkQo6SAARdhpk3R8yAH1plA6:ZdPoBL1aRxcSUDk36SAEdh+3R8yAVp26

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3384) 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 1 IoCs

Processes:

tasksche.exe

pid process

2332 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 1 IoCs

Processes:

78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe

description ioc process

File created C:\WINDOWS\tasksche.exe 78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3928 2332 WerFault.exe tasksche.exe
1584 2332 WerFault.exe tasksche.exe

pid	process
2332	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe

pid	pid_target	process	target process
3928	2332	WerFault.exe	tasksche.exe
1584	2332	WerFault.exe	tasksche.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe

description	pid	process	target process
PID 220 wrote to memory of 2332	220	78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe	tasksche.exe
PID 220 wrote to memory of 2332	220	78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe	tasksche.exe
PID 220 wrote to memory of 2332	220	78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe	tasksche.exe

C:\Users\Admin\AppData\Local\Temp\78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:220

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
2⤵
- Executes dropped EXE
PID:2332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2332 -s 224
3⤵
- Program crash
PID:3928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2332 -s 228
3⤵
- Program crash
PID:1584

C:\Users\Admin\AppData\Local\Temp\78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe
C:\Users\Admin\AppData\Local\Temp\78f8bf2607bd58232157b444a11f1b14_JaffaCakes118.exe -m security
1⤵
PID:2456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2332 -ip 2332
1⤵
PID:3152

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2332 -ip 2332
1⤵
PID:3652

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\tasksche.exe

Filesize
3.4MB

MD5
0d4019652b4a71bdfb941fe4a4b57eac

SHA1
674108e9ccd4d5ad28696a4d2d291822a07acdbb

SHA256
35e8518bd85fbef05aaf095984e0ca658595c3878c6b13dbd1ec6eab8dc64860

SHA512
b0e59c9463bad0b63e5a6bc4a09d00a0d92617e7be651c7ec5eedef06c53274f294d87da1471b3201f3cd88a7f10c5cb5b5ac019e664a08d0007d3e7dec3dd22

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