wannacry | b618f24c991a75fe6ae3057af2b6b544046ab0434fa7c57a5b7eded51d752e29

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 13:47

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General

Target

2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Size

5.0MB
MD5

3c620a41d7538118181e872340c388ea
SHA1

3da7b1159862bb7922e43de1361c6d4a72f7bd77
SHA256

b618f24c991a75fe6ae3057af2b6b544046ab0434fa7c57a5b7eded51d752e29
SHA512

f5efeb4aee78c9d9f7fba59ad0a87e022371394b80815320645af395055bef255a3fd0ef7ed54b89ba59ec2ec3c0294f4948814ab937ce7f0922dbbec6696167
SSDEEP

24576:QbLguriIfEcQdIBrYbcMNgef0QeQjG/D8kIqRYoAdNLKZnV:QnpENbcBVQej/1INm

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (2169) 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
2964	tasksche.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240650171	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

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	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 2964	4736	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe	105
PID 4736 wrote to memory of 2964	4736	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe	105
PID 4736 wrote to memory of 2964	4736	2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe	105

C:\Users\Admin\AppData\Local\Temp\2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4736
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:2964

C:\Users\Admin\AppData\Local\Temp\2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-12-18_3c620a41d7538118181e872340c388ea_wannacry.exe -m security
1⤵
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3004

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

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Downloads

C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
836f2449e518945bb855b8bcae3a58eb

SHA1
f66594589ac266d45d8870c6dd099efebfa07cc8

SHA256
98d3de962eec0c931aae151efbfb3cc3bb1f48e691f4319a469f514c92c53cfb

SHA512
5d08c649a175496b3c253b0953a2125ac7adc165b75929aec9339ee5f89932d4c7706b518e15e6bfacd4c194ab025aeedde73a7d0c7c12f12b5babf5977cdf31

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