wannacry | 53d91bca5fbade26b146e8a3f3856146213545d2cb1e97ef7c464281ecb94335

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22-08-2024 23:25

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General

Target

2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe
Size

3.6MB
MD5

e9c20bf3e432519335c6fd04d1360969
SHA1

1d7a20f8610102288c632b3be9994e4cdd26653e
SHA256

53d91bca5fbade26b146e8a3f3856146213545d2cb1e97ef7c464281ecb94335
SHA512

247fa0e54dc9b810d2a47793281d794cdb5662ba85bbbd9b2b649b71559481e670c3f227820a465ccdba5ab6937aeebfea8edc6beb0a9f6880fd7b7c82dced3b
SSDEEP

49152:VnjQSkQo6SAARdhnvxJM0H9PAMEcaEau3R8yAH1plAHI:Z8Sk36SAEdhvxWa9P593R8yAVp2HI

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3276) 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

pid	Process
4544	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

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3508	4544	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 4544	2320	2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe	86
PID 2320 wrote to memory of 4544	2320	2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe	86
PID 2320 wrote to memory of 4544	2320	2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2320
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4544
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4544 -s 220
    3⤵
    - Program crash
    PID:3508

C:\Users\Admin\AppData\Local\Temp\2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-08-22_e9c20bf3e432519335c6fd04d1360969_wannacry.exe -m security
1⤵
- System Location Discovery: System Language Discovery
PID:3008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4544 -ip 4544
1⤵
PID:4152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
fb95c1daef65e5af9d20fbb711bffc5a

SHA1
a85cf736c521c716e152d610b789e1b82c7d1b20

SHA256
2f543f4d3d4ed407cf7372cbcc03764f27caf0b28931fa4bfb8b05df1855c4ba

SHA512
e538de5c2129369df8c542fd11428dc265a9f5949174ea857c92af82bbd7faf522a005a4df2033dd1cd7866a1e0731c1606890c8e40586c29fff135ad9263015

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